东欢坨矿冲积层巷道突水治理技术

Control technology for water inrush in mine alluvium roadway of Donghuantuo Mine

介绍了开滦东欢坨矿-230m水平顶板绕道在穿过F2断层2年后突发冲积层滞后溃水并夹杂卵砾石、黄泥溃入井下造成巷道淤堵灾害治理技术。通过采取对巷道上部基岩顶界面进行注浆"戴帽"处理切断冲积层与断层间的水力联系;对基岩面到巷道上方进行灌注处理切断断层的导水通道;对巷道底板及周边进行注浆加固等治理技术,成功地堵截了冲积层含水层与巷道之间的通道;对巷道四周进行了帷幕注浆加固,确保了巷道的安全恢复。

The paper introduced the control technology for the mine roadway jammed with gravel and yellow mud occurred by water inrush from the alluvium after 2 years when the excavation of the -230 m mine roadway passed through F2 fault by a detour in Donghuantuo Mine of Kailuan Group. A grouting operation as a "cap" on the bedding rocks above the mine roadway was conducted to isolate the hydraulic connection between the alluvium and fault. A grouting and injection operation was conducted from the surface of the bedd...