摘要
小湾水电站位于高地震烈度区,双曲拱坝坝肩抗力岩体存在多种地质缺陷,需采用置换洞及高压固结灌浆措施对其进行加固处理。置换洞在开挖过程中,会产生洞室围岩松动圈,提高开挖松动圈岩体波速,通过多次现场生产性试验,总结出适合小湾工程特点的灌浆压力,改善了围岩的力学性能,达到了设计要求。
The Xiaowan Hydropower Station is located in high seismic zone. The replacement holes and high pressure consolidation grouting have been used to reinforce the rock body with many geological defects in double-curvature arch dam abutment. In the excavation of replacement holes, a loose circle of surrounding rock occurred. In order to enhance the wave speed of excavated loose circle, many field productive tests were made and then we gained the grouting pressure suitable to the characteristics of the Xiaowan Project, which improves mechanics property of surrounding rock and reaches the requirements of design.
出处
《水力发电》
北大核心
2009年第9期73-74,80,共3页
Water Power
关键词
双曲拱坝
坝肩
地质缺陷
高压固结灌浆
小湾水电站
double curvature arch dam
abutment
geological defects
high pressure consolidation grouting
Xiaowan Hydropower Station
