矿井无线传输测试分析与矿用5G优选工作频段研究

孙继平; 彭铭; 刘斌

doi:10.13272/j.issn.1671-251x.18221

矿井无线传输测试分析与矿用5G优选工作频段研究

doi: 10.13272/j.issn.1671-251x.18221

1.
中国矿业大学（北京）人工智能学院，北京　100083
2.
国家能源集团宁夏煤业有限责任公司羊场湾煤矿，宁夏银川　750408

基金项目: 国家自然科学基金面上项目（52074305）；国家重点研发计划项目（2016YFC0801800）。

详细信息

作者简介:
孙继平（1958—），男，山西翼城人，教授，博士，博士研究生导师，中国矿业大学（北京）原副校长；获国家科技进步奖和技术发明奖二等奖4项（第1完成人3项）；作为第1完成人获省部级科技进步特等奖和一等奖9项；作为第１完成人主持制定中华人民共和国煤炭行业、安全生产行业和能源行业标准51项；作为第１发明人获国家授权发明专利130余件；主持制定《煤矿安全规程》第十一章“监控与通信”；被SCI和EI检索的第1作者或独立完成论文100余篇；作为第1作者或独立完成著作12部；作为国务院煤矿事故调查专家组组长参加了10起煤矿特别重大事故调查工作；E-mail：sjp@cumtb.edu.cn

中图分类号: TD655
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出版历程
- 收稿日期: 2024-10-13
- 修回日期: 2024-10-21
- 网络出版日期: 2024-11-11

Analysis of wireless transmission tests in mines and preferred working frequency bands for mining 5G

1.
School of Artificial Intelligence, China University of Mining and Technology-Beijing, Beijing 100083, China
2.
Yangchangwan Coal Mine, CHN Energy Ningxia Coal Industry Co., Ltd., Yinchuan 750408, China

摘要

摘要: 矿井移动通信系统、人员和车辆定位系统等的研发和布置，需进行矿井无线传输特性分析，优选无线工作频段，优化无线通信基站和定位分站布置。在矿井拐弯巷道、分支巷道、辅助运输大巷、掘进巷道、综采工作面中进行了350 MHz～6 GHz较大频率范围的无线传输测试，并对测试结果进行了分析，揭示了矿井无线传输特性：① 拐弯巷道中无线传输频率越低，衰减越小，其中350 MHz～900 MHz频段的无线传输衰减最小。② 分支巷道中无线传输频率越低，衰减越小，其中350 MHz～900 MHz频段的无线传输衰减最小。③ 辅助运输大巷中700 MHz～900 MHz频段的无线传输衰减最小。④ 掘进巷道中700 MHz～900 MHz频段的无线传输衰减最小。⑤ 综采工作面中433 MHz～1300 MHz频段的无线传输衰减最小。⑥ 在巷道断面相同的情况下，拐弯巷道中的无线传输衰减小于分支巷道，支巷发射的分支巷道中的无线传输衰减小于主巷发射的分支巷道。巷道拐弯和分支均增加了无线传输衰减。提出了煤矿井下无线通信系统的优选工作频段与天线在拐弯和分支巷道中的最佳布置方式：① 煤矿井下无线通信系统的工作频段应优选700 MHz～900 MHz。② 为减小巷道拐弯和分支对无线传输的影响，无线通信基站和定位分站及其天线应设置在拐弯巷道的拐点和分支巷道的分支点。研究成果已被中华人民共和国能源行业标准NB/T 11546—2024《煤矿用5G通信系统通用技术条件》、NB/T 11523—2024《煤矿用5G通信基站》和NB/T 11547—2024《煤矿用5G通信基站控制器》应用。
- 矿井无线传输 /
- 无线工作频段 /
- 5G /
- 基站布置 /
- 天线设置
Abstract: The development and deployment of mobile communication systems, personnel and vehicle positioning systems in mines require an analysis of wireless transmission characteristics, the selection of preferred working frequency bands, and the optimization of wireless communication base stations and positioning substations. In this study, wireless transmission tests were conducted in a large frequency range from 350 MHz to 6 GHz in mine environments such as curved tunnels, branch tunnels, main transportation tunnels, excavation tunnels, and fully mechanized mining faces. The test results were analyzed, revealing the characteristics of wireless transmission in mines: ① In curved tunnels, the lower the wireless transmission frequency, the smaller the attenuation, with the least attenuation in the 350 MHz to 900 MHz frequency band. ② In branch tunnels, the lower the frequency, the smaller the attenuation, with the least attenuation in the 350 MHz to 900 MHz frequency band. ③ In main transportation tunnels, the least wireless transmission attenuation was found in the 700 MHz to 900 MHz frequency band. ④ In excavation tunnels, the least attenuation was in the 700 MHz to 900 MHz frequency band. ⑤ In fully mechanized mining faces, the least attenuation was observed in the 433 MHz to 1 300 MHz frequency band. ⑥ With the same cross-sectional area of the tunnels, wireless transmission attenuation in curved tunnels was smaller than in branch tunnels, and the attenuation in branch tunnels emitted from branch sources was smaller than that emitted from main tunnels. Curves and branches in tunnels increased wireless transmission attenuation. Furthermore, this paper proposed the preferred working frequency bands and the best arrangement of antennas for wireless communication systems in underground coal mines, specifically in curved and branch tunnels: ① The working frequency bands for underground wireless communication systems should preferably be in the 700 MHz to 900 MHz range. ② To minimize the impact of curves and branches in tunnels on wireless transmission, wireless communication base stations, positioning substations, and their antennas should be set at the turning points of curved tunnels and at the branch points of branch tunnels. The research results have been applied to the People's Republic of China energy industry standards NB/T 11546-2024 General specification of 5G communication system for coal mines, NB/T 11523-2024 5G communication base station for coal mines, and NB/T 11547-2024 5G communication baseband controller for coal mines.
- mine wireless transmission /
- wireless working frequency bands /
- 5G /
- base station arrangement /
- antenna setup

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图 1 测试地点

Figure 1. Test sites

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图 2 测试设备布置

Figure 2. Test equipment layout

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图 3 拐弯巷道无线收发天线布置

Figure 3. Layout of wireless transmitting and receiving antenna in a curved roadway

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图 4 拐弯巷道中不同频率和距离下无线传输接收功率曲线

Figure 4. Received power curve of wireless transmission at different frequencies and distances in a curved roadway

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图 5 分支巷道无线收发天线布置

Figure 5. Layout of wireless transmitting and receiving antenna in a branch roadway

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图 6 支巷发射时分支巷道不同频率和距离下无线传输接收功率曲线

Figure 6. Received power curve of wireless transmission at different frequencies and distances in a branch roadway with transmitting equipment in a split roadway

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图 7 主巷发射时分支巷道不同频率和距离下无线传输接收功率曲线

Figure 7. Received power curve of wireless transmission at different frequencies and distances in a branch roadway with transmitting equipment in a main roadway

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图 8 拐弯巷道、分支巷道和平直巷道中不同频率下无线传输平均接收功率曲线

Figure 8. Average received power curve of wireless transmission at different frequencies in a curved, branch and straight roadways

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图 9 辅运大巷1中不同频率和距离下无线传输接收功率曲线

Figure 9. Received power curve of wireless transmission at different frequencies and distances in auxiliary transport roadway 1

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图 10 辅运大巷2中不同频率和距离下无线传输接收功率曲线

Figure 10. Received power curve of wireless transmission at different frequencies and distances in auxiliary transport roadway 2

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图 11 掘进巷道中不同频率和距离下无线传输接收功率曲线

Figure 11. Received power curve of wireless transmission at different frequencies and distances in an excavation roadway

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图 12 综采工作面中不同频率和距离下无线传输接收功率曲线

Figure 12. Received power curve of wireless transmission at different frequencies and distances in fully mechanized mining face

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表 1 拐弯巷道中不同频率和距离下无线传输接收功率数据

Table 1. Received power data of wireless transmission at different frequencies and distances in a curved roadway

收发天线距离/m	无线传输接收功率/dBm
收发天线距离/m	350 MHz	433 MHz	550 MHz	700 MHz	800 MHz	900 MHz	1300 MHz	1700 MHz	1900 MHz	2100 MHz	2400 MHz	2600 MHz	3300 MHz	3500 MHz	4200 MHz	4900 MHz	5400 MHz	6000 MHz
24	−22.28	−22.82	−32.40	−35.15	−37.62	−42.91	−42.60	−41.86	−46.21	−51.59	−45.72	−46.04	−50.76	−51.58	−48.47	−50.90	−56.32	−56.32
28	−22.20	−25.12	−32.24	−45.18	−34.56	−42.98	−54.95	−50.55	−45.21	−58.01	−49.25	−59.45	−60.23	−61.59	−61.76	−64.29	−63.21	−60.06
32	−34.21	−40.98	−34.27	−38.93	−48.81	−47.36	−45.27	−59.60	−49.38	−62.11	−71.49	−55.17	−67.06	−60.63	−62.60	−75.08	−67.38	−74.03
36	−40.55	−48.27	−45.66	−48.81	−45.17	−48.50	−50.72	−62.06	−59.00	−65.62	−62.13	−73.12	−66.40	−75.20	−69.70	−71.04	−69.24	−70.19
40	−37.84	−32.15	−35.25	−61.54	−46.72	−49.25	−55.87	−65.36	−56.72	−65.15	−68.50	−67.28	−67.04	−71.11	−64.93	−69.70	−76.87	−72.05

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表 2 拐弯巷道中不同频率下无线传输平均接收功率

Table 2. Average received power of wireless transmissions at different frequencies in a curved roadway

频率/MHz	无线传输平均接收功率/dBm	频率/MHz	无线传输平均接收功率/dBm
350	−31.42	2 100	−60.50
433	−33.87	2 400	−59.42
550	−35.96	2 600	−60.21
700	−45.92	3 300	−62.30
800	−42.58	3 500	−64.02
900	−46.20	4 200	−61.49
1 300	−49.88	4 900	−66.20
1 700	−55.89	5 400	−66.60
1 900	−51.30	6 000	−66.53

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表 3 支巷发射时分支巷道不同频率和距离下无线传输接收功率数据

Table 3. Received power data of wireless transmission at different frequencies and distances in a branch roadway with transmitting equipment in a split roadway

收发天线距离/m	无线传输接收功率/dBm
收发天线距离/m	350 MHz	433 MHz	550 MHz	700 MHz	800 MHz	900 MHz	1300 MHz	1700 MHz	1900 MHz	2100 MHz	2400 MHz	2600 MHz	3300 MHz	3500 MHz	4200 MHz	4900 MHz	5400 MHz	6000 MHz
24	−35.99	−24.06	−32.52	−38.29	−37.34	−41.62	−56.66	−35.73	−41.53	−56.73	−49.38	−47.26	−50.90	−47.12	−46.31	−48.80	−61.25	−56.25
28	−32.29	−27.52	−30.38	−49.04	−44.61	−43.36	−45.69	−53.94	−53.64	−47.57	−56.76	−47.23	−67.48	−52.89	−58.82	−56.88	−62.55	−69.30
32	−33.11	−31.06	−43.47	−50.32	−48.58	−45.68	−50.07	−58.09	−59.59	−59.33	−67.01	−57.71	−67.10	−64.37	−67.49	−65.69	−65.94	−66.59
36	−36.68	−38.25	−43.78	−47.44	−43.86	−49.38	−53.87	−58.77	−54.76	−61.33	−71.02	−61.45	−68.94	−65.70	−72.55	−70.06	−68.10	−74.35
40	−39.07	−38.04	−48.29	−50.03	−53.87	−58.54	−58.87	−66.02	−64.92	−67.78	−75.75	−65.23	−78.82	−72.98	−70.17	−88.03	−70.94	−74.19

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表 4 主巷发射时分支巷道不同频率和距离下无线传输接收功率数据

Table 4. Received power data of wireless transmission at different frequencies and distances in a branch roadway with transmitting equipment in a main roadway

收发天线距离/m	无线传输接收功率/dBm
收发天线距离/m	350 MHz	433 MHz	550 MHz	700 MHz	800 MHz	900 MHz	1300 MHz	1700 MHz	1900 MHz	2100 MHz	2400 MHz	2600 MHz	3300 MHz	3500 MHz	4200 MHz	4900 MHz	5400 MHz	6000 MHz
24	−32.45	−29.13	−37.34	−51.59	−46.13	−43.63	−34.52	−56.16	−45.59	−45.07	−58.16	−60.65	−54.62	−54.58	−49.42	−57.12	−54.99	−53.00
28	−41.37	−37.00	−42.61	−47.94	−57.57	−45.77	−51.76	−56.48	−56.06	−63.36	−61.58	−64.74	−61.74	−57.40	−60.39	−76.91	−59.36	−63.17
32	−32.71	−36.42	−40.75	−52.02	−57.59	−52.03	−50.94	−48.91	−49.96	−54.91	−65.85	−68.14	−71.12	−62.02	−60.43	−71.24	−73.88	−63.52
36	−44.05	−33.22	−60.76	−46.13	−49.06	−46.04	−55.97	−67.89	−55.64	−76.82	−64.63	−66.53	−69.98	−67.52	−69.34	−70.69	−82.48	−73.71
40	−43.41	−42.05	−57.47	−60.01	−62.31	−63.70	−63.66	−60.56	−65.00	−65.90	−63.97	−69.90	−70.66	−75.86	−70.16	−75.49	−78.04	−77.17

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表 5 分支巷道不同频率下无线传输平均接收功率

Table 5. Average received power of wireless transmissions at different frequencies in a branch roadway

频率/ MHz	支巷发射时分支巷道中无线传输平均接收功率/dBm	主巷发射时分支巷道中无线传输平均接收功率/dBm	频率/ MHz	支巷发射时分支巷道中无线传输平均接收功率/dBm	主巷发射时分支巷道中无线传输平均接收功率/dBm
350	−35.43	−38.80	2100	−58.55	−61.21
433	−31.79	−35.56	2400	−63.98	−62.84
550	−39.69	−47.79	2600	−55.78	−65.99
700	−47.02	−51.54	3300	−66.65	−65.62
800	−45.65	−54.53	3500	−60.61	−63.48
900	−47.72	−50.23	4200	−63.07	−61.95
1300	−53.03	−51.37	4900	−65.89	−70.29
1700	−54.51	−58.00	5400	−65.76	−69.75
1900	−54.89	−54.45	6000	−68.14	−66.11

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表 6 平直巷道中不同频率和距离下无线传输接收功率

Table 6. Received power of wireless transmission at different frequencies and distances in a straight roadway

收发天线距离/m	无线传输接收功率/dBm
收发天线距离/m	350 MHz	433 MHz	550 MHz	700 MHz	800 MHz	900 MHz	1300 MHz	1700 MHz	1900 MHz	2100 MHz	2400 MHz	2600 MHz	3300 MHz	3500 MHz	4200 MHz	4900 MHz	5400 MHz	6000 MHz
24	−18.34	−20.49	−20.47	−27.64	−33.14	−33.21	−37.67	−41.62	−33.66	−37.94	−56.94	−38.67	−48.72	−39.26	−72.71	−49.75	−54.59	−45.46
28	−22.52	−15.93	−25.41	−23.17	−30.45	−39.83	−36.07	−44.59	−37.21	−40.25	−41.45	−38.22	−46.69	−55.20	−43.07	−45.60	−49.32	−47.99
32	−21.36	−21.09	−23.64	−27.71	−25.27	−33.57	−45.50	−41.68	−41.28	−63.74	−53.05	−38.81	−63.47	−46.80	−54.36	−46.00	−56.70	−53.44
36	−18.23	−24.37	−26.31	−28.55	−30.34	−35.08	−39.46	−43.34	−39.82	−40.71	−47.55	−43.74	−44.07	−48.51	−43.67	−49.65	−51.22	−49.94
40	−21.80	−19.99	−27.85	−27.22	−28.29	−31.91	−48.94	−40.60	−34.16	−45.92	−46.68	−50.03	−49.29	−42.23	−50.14	−77.09	−52.49	−44.22
平均接收功率/dBm	−20.45	−20.37	−24.74	−26.86	−29.50	−34.72	−41.53	−42.37	−37.23	−45.71	−49.13	−41.89	−50.45	−46.40	−52.79	−53.62	−52.86	−48.21

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表 7 辅运大巷1中不同频率和距离下无线传输接收功率数据

Table 7. Received power data of radio transmission at different frequencies and distances in auxiliary transport roadway 1

收发天线距离/m	无线传输接收功率/dBm
收发天线距离/m	350 MHz	433 MHz	550 MHz	700 MHz	800 MHz	900 MHz	1300 MHz	1700 MHz	1900 MHz	2100 MHz	2400 MHz	2600 MHz	3300 MHz	3500 MHz	4200 MHz	4900 MHz	5400 MHz	6000 MHz
1	−14.58	−18.33	−18.66	−19.33	−39.92	−42.72	−21.18	−21.04	−20.27	−19.78	−20.62	−19.03	−22.82	−22.07	−22.74	−23.42	−26.96	−22.42
3	−11.25	−18.50	−23.41	−16.63	−14.48	−18.55	−25.61	−25.21	−23.01	−30.11	−25.61	−26.76	−28.25	−31.66	−30.89	−31.24	−34.18	−30.07
5	−13.70	−14.60	−21.19	−19.29	−25.63	−17.87	−28.85	−30.59	−26.69	−30.16	−28.18	−28.90	−37.04	−32.77	−32.91	−39.24	−41.72	−33.14
10	−21.20	−17.46	−20.77	−30.70	−22.75	−33.45	−26.89	−41.36	−30.35	−42.20	−53.86	−43.84	−36.18	−44.89	−47.46	−37.30	−51.37	−46.68
30	−41.03	−16.16	−21.92	−38.79	−31.29	−35.85	−36.44	−35.82	−36.37	−41.71	−44.27	−40.24	−43.50	−46.59	−51.08	−52.64	−46.49	−45.64
50	−31.20	−19.92	−35.25	−28.75	−32.30	−35.56	−45.02	−45.77	−43.11	−36.09	−50.82	−46.44	−56.57	−48.92	−46.98	−48.15	−60.87	−61.45
70	−30.14	−25.71	−28.91	−38.29	−36.62	−36.01	−45.10	−43.09	−50.50	−44.81	−50.74	−50.15	−49.44	−46.45	−53.23	−52.10	−50.12	−44.82
90	−37.50	−29.78	−34.36	−34.48	−37.30	−39.91	−42.57	−48.70	−47.24	−53.42	−54.93	−55.67	−53.29	−58.60	−46.88	−48.23	−61.16	−56.65
110	−44.20	−36.51	−40.81	−38.16	−39.68	−41.29	−40.80	−52.56	−46.25	−54.16	−58.60	−54.27	−51.43	−52.54	−50.38	−54.39	−60.18	−57.51
130	−48.33	−36.12	−39.70	−38.09	−40.49	−46.83	−45.49	−42.61	−52.57	−53.51	−54.05	−51.72	−58.54	−51.77	−59.83	−54.92	−61.72	−60.07
150	−53.51	−41.79	−43.44	−39.23	−38.78	−41.23	−47.21	−46.86	−51.09	−49.73	−54.06	−52.46	−72.57	−55.06	−63.98	−61.40	−67.39	−56.96
170	−58.66	−46.34	−43.02	−39.67	−41.44	−43.96	−45.61	−46.00	−45.34	−48.36	−52.39	−52.67	−65.97	−57.56	−61.50	−63.96	−65.06	−64.44
190	−60.40	−47.56	−45.00	−43.56	−42.47	−42.76	−50.27	−53.34	−48.85	−52.78	−55.35	−52.78	−64.40	−55.91	−68.19	−61.13	−58.29	−58.05
210	−64.17	−47.13	−47.22	−41.22	−50.13	−44.07	−48.15	−50.28	−50.75	−50.23	−51.44	−50.42	−55.78	−58.97	−65.31	−59.76	−64.02	−63.56
230	−66.72	−50.17	−46.80	−42.36	−41.30	−42.67	−46.00	−52.38	−50.18	−58.53	−52.88	−49.58	−57.95	−53.81	−66.03	−60.59	−68.02	−69.48
250	−70.91	−53.76	−49.18	−41.91	−43.76	−44.48	−45.13	−49.76	−48.26	−55.34	−61.82	−55.46	−59.62	−51.25	−64.03	−69.25	−72.77	−58.58
270	−75.07	−56.71	−50.31	−44.35	−41.89	−43.36	−47.85	−48.45	−48.10	−51.90	−59.29	−55.46	−61.17	−65.78	−57.22	−60.92	−61.29	−61.47
290	−77.84	−57.31	−54.54	−44.49	−46.12	−46.92	−50.54	−49.68	−48.02	−49.79	−54.73	−54.19	−56.81	−62.94	−59.96	−57.40	−62.10	−62.82
310	−81.64	−61.52	−52.73	−46.22	−43.93	−44.68	−49.30	−50.12	−51.23	−53.82	−52.26	−50.43	−55.49	−59.30	−55.97	−61.10	−61.19	−61.80
330	−82.00	−62.32	−58.79	−48.88	−46.52	−47.79	−48.64	−51.14	−50.25	−57.70	−55.87	−54.59	−58.07	−55.11	−57.48	−57.53	−62.35	−66.88
350	−82.93	−65.78	−56.82	−48.70	−47.81	−48.78	−49.57	−52.05	−50.03	−55.91	−61.41	−55.79	−62.26	−58.83	−55.76	−57.60	−67.10	−64.69
370	−84.90	−70.64	−62.62	−49.15	−48.90	−50.20	−49.31	−54.30	−53.62	−55.54	−70.89	−62.80	−56.92	−57.09	−53.74	−56.79	−60.03	−63.74
390	−84.97	−71.01	−61.15	−50.16	−49.05	−48.94	−52.25	−54.11	−51.56	−56.53	−62.73	−63.44	−57.85	−55.90	−54.20	−56.42	−61.75	−66.43
410	−85.36	−71.44	−67.62	−59.75	−49.60	−51.17	−50.56	−52.76	−56.44	−60.01	−63.76	−68.23	−66.33	−55.17	−55.06	−57.03	−57.53	−57.48

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表 8 辅运大巷1中不同频率下无线传输平均接收功率

Table 8. Average received power of radio transmissions at different frequencies in auxiliary transport roadway 1

频率/MHz	无线传输平均接收功率/dBm	频率/MHz	无线传输平均接收功率/dBm
350	−55.09	2100	−48.42
433	−43.19	2400	−52.11
550	−42.68	2600	−49.81
700	−39.26	3300	−53.68
800	−39.67	3500	−51.62
900	−41.21	4200	−53.37
1300	−43.26	4900	−53.44
1700	−45.75	5400	−57.65
1900	−45.00	6000	−55.62

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表 9 辅运大巷2中不同频率和距离下无线传输接收功率数据

Table 9. Received power data of wireless transmission at different frequencies and distances in auxiliary transport roadway 2

收发天线距离/m	无线传输接收功率/dBm
收发天线距离/m	350 MHz	433 MHz	550 MHz	700 MHz	800 MHz	900 MHz	1300 MHz	1700 MHz	1900 MHz	2100 MHz	2400 MHz	2600 MHz	3300 MHz	3500 MHz	4200 MHz	4900 MHz	5400 MHz	6000 MHz
1	−14.38	−18.35	−23.20	−23.73	−21.78	−24.44	−25.16	−24.83	−24.45	−22.17	−22.13	−20.63	−22.60	−21.31	−21.64	−22.66	−26.43	−21.81
3	−11.11	−21.49	−23.23	−23.90	−21.63	−23.88	−21.94	−24.96	−25.20	−29.90	−26.70	−29.34	−33.84	−30.47	−31.13	−31.31	−37.58	−31.82
5	−11.22	−18.35	−23.39	−20.74	−20.80	−23.96	−41.17	−29.19	−31.19	−29.69	−34.68	−29.07	−31.76	−39.34	−35.42	−35.08	−38.69	−34.55
10	−18.12	−16.47	−20.72	−22.07	−20.16	−22.18	−27.53	−32.27	−31.45	−38.31	−44.81	−36.38	−38.13	−47.16	−36.26	−42.83	−42.17	−44.55
20	−22.15	−24.71	−21.04	−27.47	−28.57	−40.05	−36.16	−34.17	−34.15	−35.27	−39.04	−39.93	−48.68	−42.57	−43.14	−50.97	−43.55	−50.97
30	−27.06	−26.10	−26.10	−25.16	−25.66	−29.47	−54.14	−43.19	−45.00	−38.90	−43.05	−34.05	−49.52	−49.84	−44.98	−42.61	−50.41	−48.54
40	−36.21	−37.00	−33.27	−29.72	−28.97	−32.30	−43.30	−40.03	−35.83	−47.12	−49.74	−47.27	−47.29	−65.30	−62.23	−56.13	−48.12	−46.95
50	−37.05	−53.62	−38.99	−33.22	−38.59	−35.34	−40.25	−34.80	−36.98	−47.42	−43.84	−45.69	−49.05	−44.21	−45.81	−50.53	−56.92	−61.68
70	−48.41	−48.21	−46.65	−37.76	−46.57	−44.66	−37.46	−50.99	−42.66	−48.39	−44.43	−45.75	−58.21	−51.74	−51.65	−53.56	−56.35	−54.70
80	−53.85	−51.44	−48.96	−43.14	−37.09	−44.71	−37.22	−41.94	−42.41	−43.81	−55.21	−42.03	−51.67	−50.92	−55.86	−56.22	−66.26	−60.74
90	−67.00	−62.22	−45.80	−41.90	−42.76	−39.75	−44.05	−45.36	−41.85	−46.43	−56.86	−47.52	−74.74	−54.73	−71.95	−58.34	−58.18	−50.20
100	−71.48	−62.66	−55.62	−42.91	−48.20	−43.37	−41.32	−40.35	−42.98	−49.55	−49.87	−52.20	−52.44	−46.05	−52.75	−59.49	−59.44	−58.91
110	−71.39	−63.25	−59.02	−55.99	−43.49	−48.24	−39.95	−44.29	−41.70	−52.04	−49.57	−46.88	−51.80	−52.33	−49.06	−53.56	−59.86	−63.01
120	−82.03	−66.47	−57.63	−56.39	−44.51	−43.85	−42.42	−41.39	−44.50	−45.01	−48.94	−47.88	−52.04	−52.47	−51.85	−53.15	−66.64	−54.70
130	−78.15	−72.70	−61.52	−59.38	−47.16	−48.48	−53.92	−43.12	−42.96	−46.58	−50.32	−47.03	−53.64	−51.43	−54.14	−59.49	−63.29	−56.01
140	−83.74	−77.96	−65.27	−57.40	−55.81	−47.86	−48.15	−44.04	−44.55	−45.86	−51.88	−48.01	−55.59	−54.75	−58.06	−57.81	−60.25	−57.75
150	−83.90	−74.07	−65.87	−55.04	−51.16	−47.62	−48.77	−46.36	−47.51	−46.60	−49.06	−47.08	−54.04	−51.64	−58.24	−56.12	−57.13	−64.00
160	−83.36	−80.56	−67.56	−59.54	−49.49	−48.12	−49.15	−46.76	−45.28	−51.55	−48.28	−45.72	−53.18	−49.80	−55.58	−61.83	−58.66	−57.28
170	−84.43	−86.00	−69.57	−66.17	−51.34	−49.14	−48.60	−45.12	−44.94	−49.32	−50.37	−49.11	−52.40	−51.55	−55.19	−59.66	−63.65	−58.34
180	−88.55	−83.52	−73.59	−71.27	−51.89	−51.40	−47.34	−48.47	−45.82	−50.02	−51.25	−49.07	−53.88	−52.05	−63.03	−56.64	−63.13	−56.88
190	−86.83	−87.55	−78.42	−65.44	−56.53	−53.43	−45.78	−49.29	−47.26	−50.41	−48.66	−47.98	−54.43	−51.68	−55.56	−58.83	−65.83	−58.14
200	−82.54	−85.92	−74.96	−64.43	−61.27	−54.55	−48.60	−50.56	−50.12	−54.76	−51.76	−48.34	−55.19	−52.24	−54.51	−58.61	−64.82	−66.09

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表 10 辅运大巷2中不同频率下无线传输平均接收功率

Table 10. Average received power of wireless transmissions at different frequencies in auxiliary transport roadway 2

频率/MHz	无线传输平均接收功率/dBm	频率/MHz	无线传输平均接收功率/dBm
350	−56.50	2100	−44.05
433	−55.39	2400	−45.93
550	−49.11	2600	−43.04
700	−44.67	3300	−49.73
800	−40.61	3500	−48.34
900	−40.76	4200	−50.37
1300	−41.93	4900	−51.61
1700	−40.98	5400	−54.88
1900	−40.40	6000	−52.62

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表 11 掘进巷道中不同频率和距离下无线传输接收功率数据

Table 11. Received power data of wireless transmission at different frequencies and distances in an excavation roadway

收发天线距离/m	无线传输接收功率/dBm
收发天线距离/m	350 MHz	433 MHz	550 MHz	700 MHz	800 MHz	900 MHz	1300 MHz	1700 MHz	1900 MHz	2100 MHz	2400 MHz	2600 MHz	3300 MHz	3500 MHz	4200 MHz	4900 MHz	5400 MHz	6000 MHz
1	−14.32	−13.64	−29.77	−23.69	−17.12	−24.24	−25.01	−25.04	−24.35	−25.56	−21.40	−23.48	−19.54	−19.69	−17.91	−18.05	−22.80	−21.13
3	−13.31	−15.30	−23.42	−23.89	−20.65	−24.63	−22.59	−23.41	−22.02	−23.84	−35.26	−28.72	−34.79	−30.16	−29.14	−31.23	−36.22	−32.53
5	−14.78	−18.64	−21.32	−24.17	−18.80	−28.86	−22.77	−31.07	−25.65	−31.80	−32.94	−28.89	−33.42	−32.05	−34.10	−35.49	−38.69	−34.50
10	−14.77	−17.52	−25.22	−21.16	−20.72	−26.98	−27.91	−46.25	−26.93	−30.94	−36.96	−33.42	−37.86	−38.99	−34.88	−39.32	−40.09	−39.71
20	−18.21	−19.64	−26.50	−21.22	−43.48	−28.84	−37.83	−36.00	−41.75	−41.30	−43.33	−36.66	−40.50	−46.12	−54.53	−44.77	−58.73	−45.85
40	−31.98	−20.34	−31.83	−32.84	−48.24	−38.62	−37.69	−35.95	−49.67	−50.60	−49.04	−44.78	−46.20	−43.15	−47.94	−52.26	−60.17	−56.06
60	−37.87	−30.51	−36.67	−28.73	−28.56	−38.05	−44.76	−32.88	−40.29	−43.00	−41.42	−42.11	−61.25	−63.79	−60.30	−48.24	−50.70	−61.30
80	−55.84	−41.48	−42.97	−32.94	−37.83	−36.35	−52.79	−40.49	−40.25	−44.74	−54.49	−48.90	−57.90	−49.97	−67.96	−56.11	−60.91	−53.08
100	−65.57	−46.48	−45.27	−39.32	−45.96	−42.74	−56.50	−48.13	−49.79	−46.71	−53.90	−46.36	−54.52	−53.27	−54.37	−67.14	−73.62	−57.64
120	−65.76	−53.59	−48.69	−41.56	−40.54	−39.10	−52.04	−51.09	−55.91	−59.91	−61.86	−50.61	−63.75	−60.35	−73.41	−57.30	−58.64	−54.86
140	−75.46	−53.26	−51.13	−39.21	−38.12	−43.48	−63.10	−67.30	−52.82	−57.01	−68.86	−58.60	−59.22	−49.77	−67.63	−70.56	−58.70	−55.41
160	−81.27	−56.43	−53.68	−42.65	−42.49	−47.51	−45.37	−53.65	−54.75	−53.17	−64.95	−62.07	−56.58	−51.39	−58.49	−60.48	−66.11	−59.10
180	−80.30	−65.60	−54.97	−47.23	−46.77	−44.64	−43.63	−43.86	−49.17	−53.22	−53.81	−53.83	−55.88	−65.31	−58.07	−58.71	−61.78	−63.71
200	−84.75	−74.78	−57.04	−45.96	−49.66	−49.90	−46.76	−58.65	−47.33	−59.30	−58.41	−56.42	−59.42	−59.86	−59.29	−60.80	−68.02	−64.48
250	−93.94	−83.46	−66.01	−52.53	−52.73	−58.50	−58.45	−58.71	−58.60	−60.79	−63.02	−59.11	−57.62	−59.28	−72.98	−69.16	−69.94	−63.78
300	−97.02	−95.52	−75.08	−57.01	−55.67	−57.49	−55.28	−57.72	−53.45	−58.45	−59.87	−53.58	−58.67	−62.76	−74.47	−66.66	−74.26	−71.03
350	−95.53	−100.33	−83.01	−64.47	−59.15	−60.35	−57.85	−57.29	−56.31	−55.93	−60.08	−66.81	−63.54	−59.53	−67.18	−72.27	−73.25	−71.68
400	−95.46	−100.98	−93.89	−69.26	−62.64	−63.31	−60.43	−61.53	−60.96	−66.34	−70.60	−71.80	−64.42	−65.07	−72.81	−74.50	−68.89	−75.44
450	−96.19	−99.01	−95.77	−76.39	−67.08	−66.13	−62.82	−61.24	−60.81	−71.64	−77.96	−64.77	−65.49	−64.66	−70.69	−73.70	−80.95	−84.38
500	−95.11	−101.17	−99.95	−83.76	−80.35	−78.76	−73.08	−64.32	−69.74	−78.78	−81.82	−81.40	−76.22	−76.48	−76.35	−85.81	−90.66	−86.32

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表 12 掘进巷道中不同频率下无线传输平均接收功率

Table 12. Average received power of wireless transmission at different frequencies in an excavation roadway

频率/MHz	无线传输平均接收功率/dBm	频率/MHz	无线传输平均接收功率/dBm
350	−61.37	2100	−50.65
433	−55.38	2400	−54.50
550	−53.11	2600	−50.62
700	−43.40	3300	−53.34
800	−43.83	3500	−52.58
900	−44.92	4200	−57.62
1300	−47.33	4900	−57.13
1700	−47.73	5400	−60.66
1900	−47.03	6000	−57.60

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表 13 综采工作面中不同频率和距离下无线传输接收功率数据

Table 13. Received power data of wireless transmission at different frequencies and distances in fully mechanized mining face

收发天线距离/m	无线传输接收功率/dBm
收发天线距离/m	350 MHz	433 MHz	550 MHz	700 MHz	800 MHz	900 MHz	1300 MHz	1700 MHz	1900 MHz	2100 MHz	2400 MHz	2600 MHz	3300 MHz	3500 MHz	4200 MHz	4900 MHz	5400 MHz	6000 MHz
7.00	−20.06	−22.84	−21.70	−22.88	−22.46	−21.56	−22.73	−26.05	−23.36	−26.55	−29.82	−23.37	−37.15	−30.41	−35.91	−38.40	−41.09	−39.90
59.50	−51.86	−47.86	−49.91	−49.00	−55.39	−54.67	−52.76	−63.12	−61.29	−53.55	−58.16	−71.53	−70.60	−49.87	−53.92	−57.74	−68.58	−56.91
71.75	−59.22	−54.54	−53.92	−51.17	−49.17	−52.92	−52.72	−65.82	−54.65	−56.78	−65.57	−65.34	−76.44	−65.57	−70.51	−64.95	−61.60	−59.20
98.00	−69.49	−73.47	−63.20	−67.66	−64.41	−68.03	−65.03	−65.25	−63.10	−68.94	−64.87	−62.20	−65.38	−63.63	−72.63	−78.02	−79.40	−67.00

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表 14 综采工作面中不同频率下无线传输平均接收功率

Table 14. Average received power of wireless transmission at different frequencies in fully mechanized mining face

频率/MHz	无线传输平均接收功率/dBm	频率/MHz	无线传输平均接收功率/dBm
350	−50.16	2100	−51.46
433	−49.68	2400	−54.61
550	−47.18	2600	−55.61
700	−47.68	3300	−62.39
800	−47.86	3500	−52.37
900	−49.30	4200	−58.24
1300	−48.31	4900	−59.78
1700	−55.06	5400	−62.67
1900	−50.60	6000	−55.75

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