压力管道斜井开挖施工技术在木坡水电站中的应用  

Application of pressure pipeline inclined shaft excavation construction technique in Mupo hydropower station

作　　者：党现宏 

机构地区：[1]黄河上中游管理局西安黄河工程监理有限公司,陕西西安710021

出　　处：《水利建设与管理》2018年第1期81-84,89,共5页Water Conservancy Construction and Management

摘　　要：木坡水电站压力管道斜井前期开挖施工过程中,由于局部围岩稳定性、整体性、耐久性较差,可能造成坍塌。单向作业面开挖工作效率低,会导致斜井开挖工期大幅滞后。为解决技术问题,通过科学分析和研究讨论后,改用"正导和反导开挖"相结合的施工方法。本文详述了导井开挖和扩挖施工的方法,指出了施工重点和难点。最后对原设计方案和实际施工的进度进行了对比,证明根据实际情况采用"正导和反导开挖"相结合的方法的科学性。During early stage excavation construction of Mupo hydropower station pressure pipeline inclined shaft early stageexcavation construction, collapse may be caused due to poor stabil ity, integrity and durability of local surrounding rock. Unilateral working plane excavation work has low efficiency, thereby leading to serious lagged construction inclined shaft. ＇Positive and inverse excavation＇ combined construction method is used through scientific analysis and research discussion in order to solve the technical problems. In the paper, pilot shaft excavation and expansion construction methods are described. Construction keys and difficulties are pointed out. Finally, the original design scheme and theactual construction progress are compared. The scientificity of method combining ＇positive and inverse excavation＇ according to the actual situation is proved.

关 键 词：压力管道 斜管 导井双向开挖 施工方法 木坡水电站 

分 类 号：TV732.4[水利工程—水利水电工程]