孔底聚能药包水平预裂法开挖保护层的试验研究  

Experimental Study on Excavating Protective Layer by Horizontal Presplitting Method

作　　者：胡义重 徐国平 

机构地区：[1]葛洲坝集团第二工程有限公司,湖北宜昌443002

出　　处：《爆破》2000年第4期18-20,共3页Blasting

摘　　要：水工建筑物岩石基础保护层的快速开挖一直是困扰水电工程开挖施工的一个难题。随着钻孔设备和爆破器材的发展 ,传统的保护层开挖方法也有了新的突破。本文介绍了三峡二期工程中进行的垂直孔孔底聚能药包水平预裂法开挖保护层的试验情况。How to excavate the protective layer of rock foundation of hydraulic structure is a difficult problem in hyodrpower engineering implementation. New breakthrough is made in the traditional excavation method of protective layer with the development of drilling devices and explosives, this paper introduces the experiments in excavating the protecitve layer by horizontal presplitting method with shaped charge at hole bottom in the three Gorges Project.

关 键 词：保护层开挖 聚能药包 水平预裂 三峡二期工程 

分 类 号：TV542[水利工程—水利水电工程]