【摘要】 文章介绍了巴基斯坦真纳水电站发电厂房深厚砂砾石覆盖层基坑的防渗降水设计方法。通过采用高压旋、摆喷灌浆防渗墙与降水井群相结合的防渗降水技术,成功将厂房大面积基坑的地下水位降至目标高程,达到了在建基面进行干地施工的目的,取得了良好的效果。更多还原

【Abstract】 This paper makes an introduction to the anti-seepage and dewatering design of the powerhouse foundation pit,which locates on deep overburden of sand and gravel,of Jinnah hydropower station in Pakistan.The underground water level of the pit is successfully lowered to the designed elevation by the combined use of anti-seepage and dewatering measures such as high-pressure swayed and rotated jetting anti-seepage walls and drainage wells.Therefore,dry floor construction is achieved on foundation base,which can be well referenced by similar projects.更多还原