Research on technology of continuous conveyor used with matching tunnel boring machine in long-distance inclined shafts

In view of problems of traditional construction method for long-distance inclined shafts development which uses drilling and blasting method or freezing method combined with rail or trackless vehicles for slag-out, that it needs many equipments, has high requirement for scheduling and transportation management and low slag-out efficiency, superiority of the construction method using tunnel boring machine for excavation with continuous conveyor for slag out was analyzed. Structure of continuous conveyor was introduced. The key technologies need to improve were pointed out, including large capacity belt storage technology, intelligent conveyor belt tensioning technology, fast belt take-up or retracting technology, safe extension installation technology, control and protection technology, etc. The practical application of Bulianta Coal Mine shows that excavation speed of the construction method using tunnel boring machine for excavation with continuous conveyor for slag-out is 4-5 times of that of traditional construction mode, which can meet the requirements of rapid construction of long distance inclined coal mine.