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厚硬顶板工作面采动影响下巷道群区域防冲卸压技术研究

窦桂东,  贾增林,  高永刚,  张营

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文章导航 > 工矿自动化  > 2021 >  47(12): 32-38
窦桂东, 贾增林, 高永刚, 等. 厚硬顶板工作面采动影响下巷道群区域防冲卸压技术研究[J]. 工矿自动化, 2021, 47(12): 32-38. doi: 10.13272/j.issn.1671-251x.2021060036
引用本文: 窦桂东, 贾增林, 高永刚, 等. 厚硬顶板工作面采动影响下巷道群区域防冲卸压技术研究[J]. 工矿自动化, 2021, 47(12): 32-38. doi: 10.13272/j.issn.1671-251x.2021060036
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DOU Guidong, JIA Zenglin, GAO Yonggang, et al. Research on regional anti-burst and pressure relief technology of roadway group affected by mining in thick and hard roof working face[J]. Industry and Mine Automation, 2021, 47(12): 32-38. doi: 10.13272/j.issn.1671-251x.2021060036
Citation: DOU Guidong, JIA Zenglin, GAO Yonggang, et al. Research on regional anti-burst and pressure relief technology of roadway group affected by mining in thick and hard roof working face[J]. Industry and Mine Automation, 2021, 47(12): 32-38. doi: 10.13272/j.issn.1671-251x.2021060036
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厚硬顶板工作面采动影响下巷道群区域防冲卸压技术研究

doi: 10.13272/j.issn.1671-251x.2021060036
  • 1.

    1. 陕西彬长小庄矿业有限公司, 陕西 咸阳 713500;

  • 2.

    2. 中煤科工开采研究院有限公司, 北京 100013

基金项目: 

“科技助力经济2020”重点专项(SQ2020YFF0426364)。

详细信息
    作者简介:

    窦桂东(1983-) ，男，山东泰安人，高级工程师，硕士，现主要从事煤矿灾害治理工作，E-mail：313934867@qq.com。

    通讯作者:

    张营(1987-)，男，山东泰安人，工程师，现主要从事矿山压力与岩层控制及煤岩动力灾害防治工作，E-mail：18854828200@163.com。

  • 中图分类号: TD324

Research on regional anti-burst and pressure relief technology of roadway group affected by mining in thick and hard roof working face

  • 1.

    Shaanxi Binchang Xiaozhuang Mining Co., Ltd., Xianyang 713500, China;

  • 2.

    CCTEG Coal Mining Research Institute, Beijing 100013, China

    摘要
  • 摘要: 在特殊地质与开采技术条件影响下，受冲击地压灾害威胁矿井的工作面附近巷道群区域往往处于高应力环境，具有较高的冲击危险性。针对厚硬顶板工作面采动影响条件下巷道群区域防冲卸压问题，以陕西彬长小庄矿业有限公司40309工作面为工程背景，通过分析现场监测获取的工作面回采末期微震、地音、应力数据，可知在工作面回采末期，外围联络巷、硐室及中央大巷等巷道群区域已处于工作面采动影响范围内，受采动影响，冲击危险性持续升高。理论分析认为，40309工作面采动影响下巷道群区域冲击危险性产生的原因是在厚硬顶板条件下，巷道群区域集中动静载荷叠加积聚。针对40309工作面不同巷道区域，提出深孔、超深孔顶板预裂爆破防冲卸压方案，并进行工程实践与效果检验，结果表明：采用防冲卸压方案后，40309工作面及附近巷道群区域微震频次、能量分别降低55%，60%，地音监测危险等级中c级和d级占比下降22.8%，巷道群区域应力集中程度明显降低，冲击危险性显著减小；工作面及附近硐室、联络巷、中央大巷区域巷道无变形及动力显现现象，防冲效果良好。

     

    Abstract: Under the impact of special geological and mining technology conditions, the roadway group area near the working face of the mine threatened by the rock-burst disasters is often in the high stress environment with a high impact risk. In order to solve the problem of roadway group regional anti-burst and pressure relief under the impact of mining in thick and hard roof working face, taking the 40309 working face of Shaanxi Binchang Xiaozhuang Mining Co., Ltd. as the engineering background, through on-site monitoring, the microseismic, ground sound and stress data at the end of working face mining are obtained. And the analysis show that the peripheral connecting roadway, chamber and central main roadway at the end of the working face are within the impact range of working face mining, and the impact risk continues to increase due to the impact of mining. The theoretical analysis shows that the reason for the impact risk of roadway group under the impact of mining in 40309 working face is the superposition and accumulation of concentrated dynamic and static loads in roadway group area under the condition of thick and hard roof. Aiming at different roadway areas of 40309 working face, the deep hole and ultra-deep hole roof presplitting blasting anti-burst pressure relief scheme is proposed, and the engineering practice and effect test are carried out. The results show that after adopting the anti-burst pressure relief scheme, the frequency and energy of microseisms in the 40309 working face and the nearby roadway group area are reduced by 55% and 60% respectively, the proportion of the c and d levels in the ground sound monitoring disaster level has decreased by 22.8%, the degree of regional stress concentration of the roadway group is significantly reduced, and the impact risk is significantly reduced. The working face and nearby chambers, connecting roadways and central roadways have no deformation and dynamic phenomena, and the anti-burst effect is good.

     

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  • 收稿日期:  2021-06-14
  • 修回日期:  2021-12-06
  • 刊出日期:  2021-12-20

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