洪家渡水电站高压灌浆抬动变形监测方法及成果分析研究  

Monitoring Method and Result Analysis and Study for Lift Deformation of High-pressure Grouting of Hongjiadu Hydropower Station

作　　者：熊德全[1] 赵正洪[1] 王昆[1] 

机构地区：[1]中国水电顾问集团昆明勘测设计研究院,云南昆明650051

出　　处：《云南水电技术》2009年第1期23-28,共6页

摘　　要：水电大坝及枢纽防渗处理的基本方法为灌注水泥浆液之一，随着灌浆机具及工艺的日趋成熟和完备，灌浆的压力因工程的规模及地质条件复杂等原因而大幅提高，国内相关大型水电工程的最大灌浆压力已达到5～8MPa，较大的灌浆压力一方面有利防渗帷慕体的结实耐久，另一方面对水工结构物产生抬动变形等危害，因此灌浆抬动监测不容忽视。一般灌浆工程主要采用单点法观测30m以上的地表层灌浆抬动变形，本文介绍洪家渡水电站面板堆石坝趾板高压灌浆试验的分层多点监测岩层变形新方法。主要介绍抬动监测方法及数据分析研究的相关资料，供水电基础加固处理工程建设同行探讨。The basic method for leakage prevention treatment of dam and complex in the hydropower station is one of cement slurry grouting methods. With the gradual maturity and perfection of grouting machines and technique, the grouting pressure has been greatly improved because of the project scale and complicated geological conditions, and the related large-scale hydropower stations have the maximum grouting pressure of 5-7MPa in China now. On the one hand, the bigger grouting pressure is in favor of the firmness and duration of leakage prevention curtain body; on the other hand, it also can cause secondary crack damage to the rock-soil layer and cause the lift deformation of hydrostructure, etc., so the grouting lift monitoring can not be ignored. For the general grouting works, single-point method is mainly used to observe the grouting lift deformation of the surface layer with elevation of above 30m. This paper introduces a new layering and multi-point monitoring method for rock formation deformation in the test of high pressure toe-plate grouting of high concrete-faced rockfill dam of Hongjiadu Hydropower Station, which mainly introduces the lift monitoring method and data analysis and research and other information, for the research by the colleagues in the same industry of hydropower foundation reinforcement treatment works.

关 键 词：洪家渡水电站 灌浆试验 高灌浆压力 抬动变形监测 监测成果分析 

分 类 号：TV641.43[水利工程—水利水电工程] TV543