期刊论文

Seepage plugging technology for strongly weathered dam foundation

中文

水利水电技术(中英文)

1000-0860

2022

53

3

78-83

10.13928/j.cnki.wrahe.2022.03.008

国家自然科学基金（51279019）；

本校为第一机构

云南红河州八尺水库为绿春县新增水源工程，水资源十分宝贵，2015年开工建设，2017年面板堆石坝开始蓄水。随库水位上升坝基渗水量逐渐加大，先后2次空库后采用常规灌浆方式对坝基进行灌浆补强后，最大渗水量还有0.1 m~3/s,蓄水一直达不到正常水位，原因是坝基强风化地层破碎结构，采用常规灌浆工艺必然存在灌浆范围不可控、局部跑浆、均一性差、低压灌注不密实等问题，难以形成有效的防渗帷幕结构。通过系统研究分析地质条件、防渗结构及灌浆技术，采用“引孔自下而上小段脉动灌浆”工艺，以灌入量及抬动值控制灌浆压力，实施控制性灌浆，并根据施工过程钻孔、灌浆、渗漏量监控等动态信息，不断...

Bachi Reservoir in Honghe Prefecture is a new water source project in Luchun County;of which the construction started in 2015 and the impoundment began in 2017 with a concrete face rockfill dam.Following with the rise of the reservoir water level,the seepage from the dam foundation gradually increase and the maximum seepage is still 0.1 m3/s after the grouting reinforcement of the dam foundation with the conventional grouting technology after two times of reservoir emptying,thus the impoundment of the reservoir never reach to the normal water l...