浅谈尾矿库排洪系统穿越塌方冒顶区域施工方法

Discussion on the Construction Method of Tailing Reservoir Flood Drainage System Passing through the Area of Collapse and Roof Fall

云南鹤庆北衙核桃箐尾矿库建设项目从上游至下游主要构筑物依次有拦洪坝、隧洞、尾矿堆坝、初期坝、集液池、拦污坝及回水设施等,本项目为尾矿库场外排洪隧洞工程。分析了鹤庆北衙核桃箐尾矿库场外排洪4#隧洞的工程地质和水文地质条件、穿越塌方冒顶区域总体施工思路及施工方法等,以期对类似尾矿库场外排洪系统的建设提供参考。

From upstream to downstream,the main structures of Hetaoqing tailing pond construction project in Beiya,Heqing County,Yunnan Province include flood detention dam,tunnel,tailings dam,initial dam,liquid collecting pool,trash dam and backwater facilities.The project is a flood discharge tunnel outside the tailings pond.This paper analyzes the engineering geological and hydrogeological conditions of No.4 tunnel of Hetaoqing tailing pond in Beiya,Heqing,and the overall construction ideas and construction methods for crossing the collapse and roof fall area,so as to provide reference for the construction of similar off-site flood discharge system of tailings pond.