Study on anchor bolt mesh support in air return roadway in Madaotou Mine
Li Shengxin, Du Chaoyang
1. Madaotou Mining Industry Corporation Ltd., Shanxi Datong Mining Group, Datong 037100, China; 2. College of Resources and Safety Engineering, China University of Mining and Technology ( Beijing ), Beijing 100083, China
Based on the support difficulty in 5210 air return roadway in Madaotou Mine, combined with geological condition, the combined anchor bolt mesh suppose was given by theoretical analysis and site practice. The site observation showed that anchor bolt mesh support after 40 d enables to make roadway surrounding rock stable , the added sinkage was 120 mm, the two sides convergence less than 80 mm, the bottom heave was 50 mm. The support controlled the roadway deformation, improved the roadway stability and ensured the safe mining.
李生鑫，杜朝阳. 马道头煤矿区段回风平巷锚网索支护技术研究[J]. 煤炭与化工, 2017, 40(11): 90-91,95.
Li Shengxin, Du Chaoyang . Study on anchor bolt mesh support in air return roadway in Madaotou Mine. CCI, 2017, 40(11): 90-91,95.
