柔模混凝土沿空留巷稳定性监测方法应用

The stability monitoring method of gob-side entry retaining with flexible-formwork concrete and its application

介绍了柔模混凝土沿空留巷围岩稳定性监测内容、监测仪器及方法。榆家梁煤矿43308沿空留巷工作面巷内采用锚网索支护,巷旁采用柔模混凝土墙支护,监测结果表明:巷道顶板最大下沉量为160 mm,墙体最大应力10 MPa,单体滞后临时支护长度100 m,围岩活动在巷道后方180 m处趋于稳定。

The paper introduces the instruments,method and content of stability monitoring of gob-side entry retaining. In №43308working face with gob-side entry retaining of Yujialiang mine,the bolt-mesh-cable support used in roadway-in and flexible-formwork concrete wall used in roadway-side. The monitoring results show that the roadway roof maximum sinkage is about 160 mm and the wall maximum stress about 10 MPa,the surrounding rock tends to be stable behind the roadway about 180 m.