西霞院大坝软岩地基处理及分层沉降分析  

Dam Soft Rock Foundation Treatment and Layered Settlement Analysis

作　　者：尚展垒[1] 沈高峰[1] 朱付保[1] 

机构地区：[1]郑州轻工业学院计算机与通信工程学院,河南郑州450002

出　　处：《人民黄河》2014年第4期92-94,共3页Yellow River

摘　　要：西霞院工程是建立在软岩基础上的工程,软岩地基存在着基础承载力不足、抗滑稳定性差、防渗难度大等问题。地基处理效果的好坏将直接影响到工程建成后能否正常运行。通过对西霞院工程软岩地基地质条件的分析,探讨了软岩地基处理方法、安全监测仪器布设方案及观测数据的分析方法。利用分层沉降方法分析西霞院工程复合地基的沉降历程。结果表明,利用混凝土防渗墙和混凝土桩复合地基的处理方式是合适的,而尾水平台防渗需要加强。Xixiayuan Project is the second dam built on the soft rock foundation in China. The soft rock foundation has such key issues as lacking basic capacity, poor stability against sliding, great difiqculty on anti-seepage and so on. The foundation treatment will determine whether the project is safe or not during the construction period and operation period. This paper summarized the geology of the soft rock foundation of Xixiayuan pro- ject, and discussed the methods of foundation treatment, the layout of safety monitoring instruments and the analysis of the observational data. In addition, the study analyzed the settlement course of the composite foundation by utilizing the method of layered settlement analysis. The results show that the foundation treatment is appropriate. It can provide a new experience on construction of dam and other large water conservancy projects on soft rock foundation.

关 键 词：软岩地基 复合地基 分层沉降 地基沉降 沉降历程 西霞院工程 

分 类 号：TV223.21[水利工程—水工结构工程]