乌东德水电站大坝防渗帷幕成幕影响地质因素分析及处理措施

doi:10.13278/j.cnki.jjuese.20180174

吉林大学学报(地球科学版) ›› 2018, Vol. 48 ›› Issue (5): 1581-1588.doi: 10.13278/j.cnki.jjuese.20180174

• 中国水利学会勘测专业委员会专栏 • 上一篇

乌东德水电站大坝防渗帷幕成幕影响地质因素分析及处理措施

向家菠¹, 王团乐¹, 倪凯军¹, 宛良朋², 施炎¹, 胡巍¹

1. 长江三峡勘测研究院有限公司(武汉), 武汉 430074;
2. 中国三峡建设管理有限公司, 成都 610041

收稿日期:2018-06-12 发布日期:2018-11-20
通讯作者: 倪凯军(1980-),男,高级工程师,主要从事水利水电工程地质勘察方面的研究,E-mail:44471776@qq.com E-mail:44471776@qq.com
作者简介:向家菠(1976-),男,高级工程师,主要从事水利水电工程地质勘察方面的研究,E-mail:370336638@qq.com
基金资助:
湖北省自然科学基金项目（2017CFB382）

Geological Factors and Its Treatment Measures of Dams Anti-Seepage Grouting Curtain at Wudongde Hydropower Station

Xiang Jiabo¹, Wang Tuanle¹, Ni Kaijun¹, Wan Liangpeng², Shi Yan¹, Hu Wei¹

1. Three Gorges Geotechnical Consultants Co., Ltd., Wuhan 430074, China;
2. China Three Gorges Projects Development Co., Ltd., Chengdu 610041, China

Received:2018-06-12 Published:2018-11-20
Supported by:
Supported by Natural Science Foundation of Hubei Province(2017CFB382)

摘要/Abstract

摘要： 灌浆工程为地下隐蔽工程，其地质条件约束着实际的现场施工工艺，且不同地质条件对应不同的岩石属性，并将直接影响着防渗帷幕的优化设计，同时地质条件分析不足也将给整个灌浆工程带来很多不确定的风险。目前，地质条件预测在隧洞开挖过程中的研究较充分，但在灌浆工程中地质因素的研究较少。本文以乌东德水电站大坝防渗帷幕工程为例，分析了对防渗帷幕成幕有影响的岩溶、角砾岩、断层、岩层走向与帷幕走向大角度相交及长大结构面等地质因素，并针对不同地质因素的特点，提出了采取浓浆回填、灌浆孔加密加深、灌浆压力及浆材动态调整等处理措施，为帷幕灌浆工程优化提供了必要支持。

关键词: 灌浆工程, 防渗帷幕, 地质因素, 处理措施, 乌东德水电站

Abstract: Grouting works are underground concealed works, and their geological conditions and different rock properties constrain the actual site construction technology, and influence the optimal design of dam anti-seepage curtain. The lack of analysis of geological conditions will bring a lot of uncertainty to the grouting engineering. Prediction of geological condition is well studied presently in tunnel excavation, but not the geological factors in grouting engineering. Based on the example of dam anti-seepage grouting curtain at the Wudongde hydropower station, the authors analyzed and studied the geological factors such as karst, breccia, fault, large structural plane, and the large intersection angle between the curtain and terrane strike. According to the characteristics of different geological factors, the authors put forward a series of treatment measures such as thick slurry backfilling, deepening and encryption of grouting hole, dynamic adjustment of grouting pressure and material. The study can reduce cognitive blindness of geological conditions, and provide necessary support for curtain grouting optimization.

Key words: grouting engineering, anti-seepage curtain, geological factors, treatment measures, Wudongde hydropower station

中图分类号:

P314.3

向家菠, 王团乐, 倪凯军, 宛良朋, 施炎, 胡巍. 乌东德水电站大坝防渗帷幕成幕影响地质因素分析及处理措施[J]. 吉林大学学报(地球科学版), 2018, 48(5): 1581-1588.

Xiang Jiabo, Wang Tuanle, Ni Kaijun, Wan Liangpeng, Shi Yan, Hu Wei. Geological Factors and Its Treatment Measures of Dams Anti-Seepage Grouting Curtain at Wudongde Hydropower Station[J]. Journal of Jilin University(Earth Science Edition), 2018, 48(5): 1581-1588.

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乌东德水电站大坝防渗帷幕成幕影响地质因素分析及处理措施

Geological Factors and Its Treatment Measures of Dams Anti-Seepage Grouting Curtain at Wudongde Hydropower Station

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