粉细砂地层防渗帷幕综合施工方法  

Comprehensive Construction Method of Anti-seepage Curtain in Silt and Fine Sand Layer

作　　者：丁跃军[1] 

机构地区：[1]中国电建集团贵阳勘测设计研究院有限公司,贵州贵阳550023

出　　处：《探矿工程（岩土钻掘工程）》2015年第4期76-78,共3页Exploration Engineering:Rock & Soil Drilling and Tunneling

摘　　要：四川省武都水库右岸EL574 m灌浆平洞揭露出厚度2.3～9.8 m的粉细砂层，普通水泥高压灌浆无法形成可靠的防渗帷幕。采用高压旋喷、湿磨细水泥、化学灌浆的组合处理方式，取得了较好的施工效果。通过钻孔压水、大功率声波CT、单孔声波、钻孔全景数字成像等方法检测，表明达到了设计防渗要求。On the right bank of Wudu reservoir of Sichuan, silt and fine sand layer with thickness of 2.3～9.8m exposed in EL574m grouting adit;in this case, reliable anti-seepage curtain can not be formed by high pressure grouting with ordinary cement.By the use of a combined grouting method of high pressure jetting grouting, wet grinding fine cement and chemical grouting, good construction effect is achieved.The construction was tested by water pressure in borehole, high-power a-coustic CT, single-hole acoustic wave and drilling digital panoramic imaging, which indicates that the construction has met the requirement of designed seepage control.

关 键 词：粉细砂地层 帷幕灌浆 高压旋喷 湿磨细水泥 化学灌浆 

分 类 号：TV543[水利工程—水利水电工程]