复杂条件下大坝倒垂孔施工技术措施  

Technical Measures for Construction of Reversed Pendent Holes in Complicated Geological Conditions

作　　者：王琪 杨晓红 

机构地区：[1]中国水利水电第三工程局有限公司基础工程分局,西安710032

出　　处：《西北水电》2014年第2期55-58,共4页Northwest Hydropower

摘　　要：大坝监测系统中监测孔大多布置在预留廊道内,作业空间狭小,施工难度大。针对地质条件复杂、设计深度大、精度要求高、作业面受限等特点,采用了一套防斜纠偏及保护管安装措施,有效地控制了钻孔精度,成功地完成了保护管安装,检验各项指标符合设计要求。In dam monitoring system, the monitoring holes mostly are arranged in advance in galleries where space is small for operation and construction is difficult.Aiming at the complicated geological conditions, deep design depth, high precision requirement and limited operation front, etc, one set of measures for inclination deviation prevention and correction is applied, effectively controlling the hole precision and successfully fulfill installation of protection tubes.Design requirements are satisfied according to inspection.

关 键 词：复杂地质 倒垂孔 钻孔 纠偏 技术措施 

分 类 号：P634.7[天文地球—地质矿产勘探] TV52[天文地球—地质学]