挖金湾矿小煤柱工作面过5m大断层开采技术研究

Study on the mining technology of the small pillar working face of Wajinwan mine with a length of 5m over fault

在煤矿井下回采作业中,断层是一种十分常见的地质构造类型。受大断层影响,提前停采严重造成资源损失,为了提高资源回收率,过大断层就尤为重要。本文基于挖金湾矿山4#煤层一盘区8105小煤柱工作面过5m大断层的实际难题,通过采用联合支护技术、加强回采巷道顶板管理、调整割煤工艺、预裂孔松动技术等综合技术破除该矿过5m大断层瓶颈难题,实现了小煤柱工作面安全高效过断层,为其他矿井类似工程提供了借鉴经验。

fault is a very common type of geological structure in underground mining.Due to the influence of large faults,the early stoping of mining seriously causes the loss of resources.This article is based on digging in jinwan mine 4#coal seam in a panel of 8105 small coal pillar mining face in 5 m large fault of the practical problems,through the adoption of combined support technology,strengthen the management of mining roadway roof,adjust cut loose coal technology,advance in technology and integrated technology to break the mine 5 m big fault bottleneck problems,to achieve safety and efficiency of the small coal pillar face through fault,provides the reference for other mines the similar projects.