掘进巷道小煤柱采空区探放水施工设计

Construction Design of Exploration and Drainage of Mined-out Area with Small Pillar in Driving Roadway

基于三盘区西翼2310巷在掘进过程中,巷道涌水量大、巷帮片帮严重等现象,分析了水源主要来自于邻近小煤柱8309采空区,为了保证巷道施工安全,决定对巷道采取超前探放水施工设计,并对钻场采取“注浆+架设L型钢棚”联合安全技术措施,通过实际应用,共计放水量为3792m3,保证了巷道安全快速掘进,消除了采空区水害隐患,取得了显著应用成效。

Based on the phenomena of large water inflow and serious side wall of 2310 roadway in West Wing of Sanpan District,the water source is mainly from the goaf of 8309 adjacent small coal pillar.In order to ensure the safety of roadway construction,it is decided to adopt advanced water exploration and drainage construction design for roadway,and to adopt the combination of"grouting+erecting L-shaped steel shed"for drilling site.Through practical application,the total amount of water discharged is 3792 m3,which ensures the safe and rapid tun-neling of roadways,eliminates the hidden danger of water hazards in goaf,and achieves remarkable application results.