横山土石坝扩建的构造和应力变形分析

The Structure and Deformation Analysis of Hengshan Earth rockfill Dam due to Its Enlargement

本文对１９９５年１２月已竣工验收鉴定的横山扩建坝的构造、主要特点和评价作了概要介绍。重点说明了扩建成混凝土面板堆石坝的设计要点和理论方法、老坝心墙拱效应、深混凝土防渗墙的应力状况。结合原型内部观测成果，作了对比分析研究。

This paper describes generally the changed structure characteristics and assesment on Hengshan earth rockfill dam due to its enlargement. The anlysis of arch action effect in clay core of existent dam,the stresses and deformation of deep vertical concrete cut off wall, compared with the feed back data obtained from on site observation are illustrated detailedly.