水平岩层中孔口封闭孔内循环灌浆施工应用技术  

Application of borehole-sealed in-hole circulation grouting in horizontal stratum

作　　者：赵赛兵 

机构地区：[1]云南建工水利水电建设有限公司,云南昆明650041

出　　处：《人民长江》2013年第12期69-70,共2页Yangtze River

摘　　要：云南德泽水库大坝为面板堆石坝,最大坝高142 m,工程采用垂直防渗为主、水平防渗为铺的防渗体系,帷幕灌浆采用孔口封闭孔内循环的施工方法。阐述了采用孔口封闭法灌浆的优点及其灌浆原理。介绍了灌浆自动纪录仪在施工中的应用。该仪器通过对灌浆压力、时间、水灰比等参数的精确控制,确保了施工质量,减少了人为因素的影响。The impervious system centering on vertical impervious measures and supplemented by horizontal impervious meas- ures are adopted in the dam project of Deze Reservoir, a CFRD with the largest height of 142m. The borehole - sealed in - hole circulation grouting was adopted in the curtain grouting construction of dam and its advantages and mechanism are presented. At last, the application of automatic grouting recording device in the construction is introduced. The device can control the grouting parameters such as pressure, time and cement - water ratio accurately, so human factors in the construction were avoided and the construction quality was guaranteed.

关 键 词：帷幕灌浆 孔口封闭 水平岩层 德泽水库 

分 类 号：TV543[水利工程—水利水电工程]