土中不耦合柱状装药的外部作用爆腔分析

详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文

英文篇名：Analysis for the Explosion Cavity of Decoupling Column Charge External Effect Blasting in Soil 中文刊名：水科学与工程技术 英文刊名：Water Sciences and Engineering Technology 作者：李毅 ; 代仁平 ; 史瑾瑾 英文作者：LI Yi1 ; DAI Ren-ping2 ; SHI Jin-jin3(1.Huadi Engineering Survey and Design Institute ; Chongqing 400042 ; China ; 2.Key Laboratory of Road and Traffic Engineering of Ministry of Education Tongji University ; Shanghai 201804 ; China ; 3.Institute of Environment and Resource Southwest University of Science and Technology ; Mianyang 621010 ; China) 中文关键词：柱状药包 ; 不耦合装药 ; 柱状空腔 ; 半椭球腔 英文关键词：column charge ; decoupling charge ; cylindrical cavity ; semi-ellipsoidal cavity 出版日期：2011-08-25 机构：重庆华地工程勘察设计院;同济大学道路与交通工程教育部重点实验室;西南科技大学环境与资源学院; 年：2011 期：04 出版单位：水科学与工程技术

摘要

基于现场爆破试验、爆炸应力波理论和爆生气体等熵方程,分析了土中不耦合垂直柱状药包外部作用的爆腔特性,将爆腔分为柱状空腔和半椭球腔两部分,并推演了柱状空腔半径和半椭球腔高度的理论计算公式。通过进行现场爆破试验和理论计算的对比分析,表明:柱状空腔半径比半椭球腔高度大,柱状空腔半径为8.5～15.3倍炮孔半径,半椭球腔高度为7.5～12.1倍炮孔半径。理论计算值与试验值较吻合,理论计算的柱状空腔半径的误差范围是5.2%～20.6%,理论计算的半椭球腔高度误差范围为2.0%～24.8%。同时表明:不耦合装药时药包周围空气间隙的大小对柱状空腔半径影响较大。
Based on the blasting tests,explosive stress wave theory and isentropic equation of the detonation gas,the explosion cavity characteristics of decoupling column charge external effect blasting in soil was analysed,the explosion cavity was bursted into cylindrical cavity and semi-ellipsoidal cavity,the theoretical formulas of ellipsoidal cavity radius and semi-cylindrical cavity height were deduced.According to the comparative analysis of blasting tests and theoretical calculations,the results showed that ellipsoidal cavity radius was bigger than semi-cylindrical cavity height,the ellipsoidal cavity radius was 8.5~15.3 times of hole radius,the semi-cylindrical cavity height was 7.5~12.1 times of hole radius.The calculation values were in good agreement with the experimental values,the error range of theoretical calculation for cylindrical cavity radius was 5.2% ~ 20.6%,error range of theoretical calculation for semi-ellipsoidal cavity height was 2.0%~ 24.8%.At the same time,it showed that the size of air gap around charge has important impact on the cylindrical cavity radius.

引文

[1]陶纪南.条形药包爆炸成型土工结构的研究[J].爆破,1985(3):13-16.
    [2]傅洪贤.条形药包在隧道爆破中产生的应力场的实测分析[J].岩土力学,2009,30(2):483-486.
    [3]张晋红.柱状药包在岩石中爆炸应力波衰减规律的研究[D].太原:中北大学,2005.
    [4]任宪仁.单自由面条件下延长药包爆破作用及数值模拟[D].武汉:武汉科技大学,2004.
    [5]林大能,罗艾民,胡伟.条形装药爆破成腔半径的弹塑性估算[J].岩土工程学报,2003,25(1):84-86.
    [6]仲跻云.关于条形药包不耦合爆破的几个问题[J].煤炭科学技术,1986(3):10-12.
    [7]王文龙.钻眼爆破[M].北京:煤炭工业出版社,1984.
    [8]林大超,白春华.爆炸地震效应[M].北京:北京理工大学出版社,2007.
    [9]徐颖,孟益平,程玉生.装药不耦合系数对爆破裂纹控制的试验研究[J].岩石力学与工程学报,2002(12):1843-1847.
    [10]张守中.爆炸与冲击动力学[M].北京:兵器工业出版社,1993.