摘要
结合九里山矿16061底抽巷揭含水层穿F16-3断层情况,通过布置钻孔探测断层的位置及产状,并在此基础上采用分次成孔、交替注浆的方式对断层进行治理,然后采用"短注短掘、先注后掘"的方式施工巷道。研究结果表明:注浆加固后钻孔涌水量降至0.003~0.30m3/min,有效降低了巷道涌水量;含水层水压由3.5MPa降至0.6~0.8MPa之间,极大的改善了该区域水文地质条件;采用"注10m掘5m"的施工方式,未发生巷道突水事故,巷道稳定性较好。
According to the geological conditions of F16-3 fault in the 16061 coalbed floor lane of Jiulishan Mine,the rock stratum in the fault area was extremely broken and the fissure was relatively developed,and there was a great water inrush risk in the course of excavation. Combined with the coal mine conditions,the location and occurrence of the fault were determined by arranging the detecting boreholes,and separate holes and alternate grouting methods were applied to control the fault. The tunnel was constructed by the principal of ＂short grouting,short tunneling,and excavation after grouting＂.The results showed that,the water inflow from the borehole was reduced to 0. 003 ~ 0. 30 m3/min after the grouting,thus effectively reduced the water inflow in the roadway. The water pressure of aquifer decreased from 3. 5 MPa to 0. 6 ~0. 8 MPa,which greatly improved the hydrogeological conditions of the area. With the construction method of ＂5 m tunneling after 10 m grouting＂,no water inrush accident occurred in the roadway,and stability of the roadway was ensured.
作者
刘广超
LIU Guang-chao(Henan College of Industrial and Information Technology,Jiaozuo 454003,China)
出处
《煤炭工程》
北大核心
2018年第9期43-46,共4页
Coal Engineering
关键词
高水压
大断层
注浆加固
导水通道
双液注浆材料
high pressure water
large fault
grouting reinforcement
water conducting channel
double liquidgrouting material
