某进水闸基础实测扬压力过大原因分析  

Reason Analysis of Bigger Uplift Pressure on the Foundation in a Intake Gate

作　　者：刘媛媛[1] 肖璐[1] 张俊嵩[1] 吕高峰[2] 

机构地区：[1]江苏省江都水利工程管理处,江苏扬州225200 [2]国家能源局大坝安全监察中心,浙江杭州311122

出　　处：《人民珠江》2017年第4期86-89,共4页Pearl River

摘　　要：某进水闸为发电系统进水口,闸基测压管实测资料表明实测扬压力大于设计扬压力,进水闸整体稳定存在一定的影响。为改善进水闸整体稳定现状,分析进水闸基础实测扬压力过大的原因,以便采取合适的工程手段。通过进水闸基础排水廊道水位与设计水位对比分析,排水廊道水位低于扬压力设计值,说明进水闸基础排水系统具备排水效果,防渗帷幕和排水失效引起进水闸扬压力过大的可能性不大。结合进水闸左岸山体水位分析,进水闸扬压力过大主要由左岸山体地下水位过高引起。通过进水闸扬压力过大原因分析,为工程后期处理提供参考性意见。A intake gate is water inlet of power generation system , the measured data of the gate base pressure measuring tube show that the measured uplift pressure is greater than the design uplift pressure, which causes a certain influence on the overall stability of the intake gate. In order to improve the overall stability of the intake gate, the reason of excessive uplift pressure is analyzed, so as to take the appropriate engineering measures. Through the comparative analysis between the intake gate foundation drainage corridor leve] and design level, drainage corridor uplift pressure water level is lower than the design value. The intake foundation drainage system has the effect of drainage, so anti - seepage curtain and drainage failure is not the reason of excessive uplift pressure. Combined with the water level analysis on the left bank of intake gate, the excessive uplift pressure is mainly caused by the water level on the left bank of intake gate. Through the reason analysis of the excessive uplift pressure, the reference is provided for the treatment of the project.

关 键 词：进水闸 测压管 扬压力 排水廊道 帷幕 

分 类 号：TV66[水利工程—水利水电工程]