高坝洲工程基坑岩溶漏水通道堵漏灌浆技术  

The selection of seepage control route for two banks of GHP and its optimal design of curtain grouting

作　　者：姚春雷 姜手虞 周和清 褚恩杰 罗福海 

机构地区：[1]长江水利委员会长江勘测规划设计研究院,湖北武汉430010 [2]中国葛洲坝集团有限公司,湖北宜昌443002

出　　处：《水力发电》2002年第3期47-49,共3页Water Power

摘　　要：对高流速、管道型岩溶漏水问题 ,通常采用可控制凝固时间的化学浆材进行堵漏灌浆 ,但存在价格昂贵、污染环境、影响施工人员健康、胶凝时间难以控制等问题。通过高坝洲工程深孔导墙导4 ～导5及 15～ 16号坝段岩溶漏水通道的堵漏实践 ,总结出一种行之有效的水流控制措施及水泥灌浆堵漏方法 。The two banks of the damsite of the GHP are situated on the soluble dolomite rock and limestone, so that the karst is developed and many large sized parallel flow direction faults occur in the area. According to the geological exploration and proof, a long impervious curtain should be arranged in two banks. On the basis of analyzing the relationship of the dam axis and the seepage control route in the karst area, this paper describes the selection of seepage control route in the right bank of the GHP. In the light of optimal design of impervious curtains in two banks of GHP, this paper puts forward the optimal design principles and measures of ' grouting holes are distributed by stages and the hole density is gradually increased'. The practice of impoundment operation for two years showed that the impervious curtains in two banks has played effective role in seepage control.

关 键 词：基坑 涌水 堵漏 水泥灌浆 高坝洲水电站 

分 类 号：TV543[水利工程—水利水电工程]