上海交通大学学报

上海交通大学学报 ›› 2009, Vol. 43 ›› Issue (10): 1581-1584.doi: 10.16183/j.cnki.jsjtu.2009.10.014

所属专题： 王建华教授学报发文专辑

• • 上一篇    

加压条件下地下爆破的三维数值模拟

陈楠(), 夏小和, 叶冠林, 王建华()   

  1. 上海交通大学船舶海洋与建筑工程学院，上海 　200240
  • 收稿日期:2009-01-08 出版日期:2009-10-01 发布日期:2021-04-25
  • 作者简介:陈楠（1985-)，男，河南安阳市人，硕士生，主要从事岩土工程方面的研究.E-mail: czmjsjcnn@yahoo.com.cn.|王建华（联系人），男，教授，博士生导师，电话（Tel.): 021-62932915; E-mail: wjh417@sjtu.edu.cn.
  • 基金资助:
    国家自然科学基金资助项目(50679041);上海市浦江人才计划资助项目(08PJ1406600);上海市重点学科资助项目(B208)

Three Dimensional Numerical Analysis of Pressurized Underground Explosion

CHEN Nan(), XIA Xiao-he, YE Guan-lin, WANG Jian-hua()   

  1. School of Naval A rchitecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China
  • Received:2009-01-08 Online:2009-10-01 Published:2021-04-25

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摘要：

以某海底顶管工程为背景，针对其施工中需要在加压条件下用微差爆破的方法来穿越岩层的特殊工况进行了三维有限元分析．数值分析充分考虑了不同地层、不同堵塞长度条件下，爆破对顶管及其周围土体的影响．分析结果表明：爆破对设备的冲击随堵塞长度的增加而减小，合适的堵塞长度可以明显减小爆破对工具的影响；全断面爆破比半断面爆破对岩层的影响较小；中心孔比周边孔对周围土体影响小．

关键词: 顶管, 微差爆破, 爆破冲击, 数值分析

Abstract:

Short-delay blasting was used in a pipe-jacking tunnel in order to pass through rock stratum. And three-dimensional finite element numerical analysis on the influence of the blasting to bored machine and surrounding ground was carried out. The effects of different ground conditions, different clogged lengths were carefully analyzed in the numerical analysis. The analysis results indicate that shock and vibration of blasting on the bored machine reduce with the increase of clogged length. An appropriate clogged length can evidently decrease the influence of blasting on the machine. The blasting vibration on the surrounding rock of full rock face is smaller than that of half rock face condition.The influence of central hole is smaller than that of peripheral hole.

Key words: pipe-jacking, short-delay blasting, shock and vibration, numerical analysis

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