摘要
针对店坪煤矿采用预留煤柱支护方案所存在的综采效率低、煤炭回采率不足的现象,分析了恒阻锚索补强支护及顶板定向预裂切缝方案,用U型钢挂网挡矸形成巷帮,提高巷帮支护的稳定性。实际应用表明,新的综采技术方案使店坪煤矿累计多回收煤柱资源20万t,创造经济效益14000万元。
In view of the low efficiency and the insufficiency of coal recovery with coal pillar in Dianping Coal Mine,the scheme of constant resistance anchor cable reinforcement and directional roof pre-cutting are analyzed with u-shaped steel retaining as roadway wall to improve the stability.The application shows that the new comprehensive mining technology scheme makes Dianping coal mine recover 200000 tons of coal pillar resources and create economic benefits of 140 million RMB.
出处
《山西焦煤科技》
CAS
2021年第12期34-37,共4页
Shanxi Coking Coal Science & Technology
关键词
110工法
沿空留巷
爆破预裂
恒阻锚索
定向预裂切缝
在线监测
110 engineering method
Retaining roadway along foaf
Blasting roof pre-splitting
Anchor cable with constant resistance
Directional pre-splitting roof cutting
On-line monitoring
