某水库大坝扬压力异常原因分析

Analysis of Abnormal Cause of Dam Lifting Pressure in a Reservoir

坝底扬压力作为坝基的一种重要荷载,其在大坝安全监测中占有十分重要的地位,重力坝坝基扬压力对大坝稳定、变形、应力有重要影响,但工程中常有发生扬压力过高等异常现象。该文就某混凝土重力坝某测压管扬压力异常的原因进行了分析,结合运行过程中测压管洗孔、排水管淤堵测试、渗流场数值模拟等手段,分析了测压管扬压力过高的原因,可为类似工程提供参考。

As an important load on the dam foundation,the dam foundation lifting pressure plays a very important role in dam safety monitoring. The gravity dam foundation lifting pressure has an important effect on the stability,deformation and stress of the dam,but the lifting pressure often occurs in the project higher anomalies. This paper analyzes the cause of abnormal pressure rise of a pressure measuring pipe of a concrete gravity dam. Combined with the methods of pressure measuring pipe washing,drainage pipe clogging test,numerical simulation of seepage field,etc.,the pressure rise of pressure measuring pipe the high reason can provide reference for similar projects.