仰采工作面过底板穿层老巷的安全技术研究

Research on Safety Technology of Passing Through the Old Roadway Through the Floor in Upward Mining Working Face

本文研究了仰采工作面在过底板穿层老巷时的安全措施,通过在回采前对底板穿层老巷架设11;矿用工字钢梯形棚,在工字钢梯形棚下打“#”型木垛加强支护,煤层内老巷采取“#”字型连锁木垛加固、注玛丽散加固小煤体等多种措施,避免了仰采时煤壁出现片帮和冒顶,保证回采过老巷期间的安全。

This paper studies the safety measures of the upward mining working face when passing through the old roadway through the floor.By setting up a 11;ladder shed of I-shaped steel for mining in the old roadway through the floor before mining,and strengthening the support by beating the "#" type wooden stack under the I-shaped steel ladder shed,the old roadway in the coal seam adopts many measures,such as "#" type chain wooden stack reinforcement,injection Marisan to strengthen the small coal body,and so on,so as to avoid the occurrence of slopes and roof fall in the coal wall during mining and ensure the safety during the mining of the old roadway.