采空区煤柱下巷道加固技术

Application of roadway reinforced technology using Ma Lisan under the pillar of high stress concentrated gob

该文同煤集团四台矿在高应力集中采空煤柱下运用马丽散加固巷道,提高巷道支护质量,精采、细采受12#层上覆煤层小窑破坏的下部资源,提高了煤炭资源的回收率,延长了巷道和工作面的服务时间,缓解了衔接紧张的局面。总结了高应力集中采空煤柱下运用,马丽散加固巷道技术的经验,为类似工作面的巷道加固支护提供借鉴。

The technical use of MaLiSan to reinforce roadway under the pillar of the high stress concentrated gob in Datong Coal Mine Group Sitai Mine, improved the roadway supporting quality, effectively mined the coal resources that were suffered by small mine, and improved the recovery rate of coal resources, which can prolong the roadway and working face service time, and ease the cohesion tension situation of mining and driving, the experience using MaLisan to reinforce the roadway under high stress concentration were summarized, and the effective safety measures are taken to provide reference for the reinforcement of the roadway with similar working face.