工程爆破

2002, (03) 53-55

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小断面桩孔内超深孔爆破破碎孤石的实践
PRACTICE OF BREAKING A LONE ROCK IN SMALL CROSS-SECTION PILE-WELL BY SUPER-DEEP HOLE BLASTING

王鹤鸣,崔年生,耿德川,黄成造
WANG He ming 1, CUI Nian sheng 1, GENG De chuan 1, HUANG Cheng zao 2 (1 Guangzhou Blasting Engineering Co Ltd ,Guangzhou 510030,China; 2 Guangzhou Highway Bureau,Guangzhou 510050,China)

摘要(Abstract):

在断面积仅为 1 13m2 的桩孔内成功地进行深孔爆破施工 ,一次爆破将桩孔 -16m至 -2 4 5m标高范围内的岩石炸碎 ,使冲孔机能继续正常冲孔。本文主要介绍了爆破参数选择、炮孔布置设计、分段装药结构、装药量的确定以及施工方法。同时 ,提出了工程中存在的一些技术问题。
In a pile well with a sectional area of 1 13 square meters,deep hole blasting was successfully carried out The rock located in the elevation of from -16 0m to -24 5m in the pile well was broken by once blast,making the impacting machine normally work In this paper,the selection of blasting parameters,the design of blasthole pattern,the decked charging structure and determination of charging weight and blasting implementation were mainly introduced At the same time,some technical problems existed in the project were put forward

关键词(KeyWords): 冲孔桩;深孔爆破;爆破破岩
Impacting pile well; Deep hole blasting; Rock fragmentation by blasting

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作者(Author): 王鹤鸣,崔年生,耿德川,黄成造
WANG He ming 1, CUI Nian sheng 1, GENG De chuan 1, HUANG Cheng zao 2 (1 Guangzhou Blasting Engineering Co Ltd ,Guangzhou 510030,China; 2 Guangzhou Highway Bureau,Guangzhou 510050,China)

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