边坡受爆破振动损伤及其稳定性分析

doi:10.16265/j.cnki.issn1003-3033.2018.02.013

中国安全科学学报 ›› 2018, Vol. 28 ›› Issue (2): 75-80.doi: 10.16265/j.cnki.issn1003-3033.2018.02.013

边坡受爆破振动损伤及其稳定性分析

曹兰柱教授, 王珍, 王东教授

辽宁工程技术大学矿业学院,辽宁阜新 123000

收稿日期:2017-10-08 修回日期:2017-12-12 出版日期:2018-02-28 发布日期:2020-11-17
作者简介:曹兰柱 (1962—),男,辽宁阜新人,硕士,教授,博士生导师,主要从事露天开采及边坡工程方面的教学和科研工作。E-mail:15841836133@163.com。
基金资助:
高等学校博士学科点专项基金资助(20122121110003);辽宁省煤炭资源安全开采与洁净利用工程研究中心开放基金资助(LNTU15KF08)。

Law of blasting vibration damage and stability analysis to slope in open-pit mine

CAO Lanzhu, WANG Zhen, WANG Dong

School of Mining,Liaoning Technical University,Fuxin Liaoning 123000,China

Received:2017-10-08 Revised:2017-12-12 Online:2018-02-28 Published:2020-11-17

摘要/Abstract

摘要： 为研究露天矿山边坡爆破振动损伤规律,提高矿山边坡安全性,以内蒙古霍林河扎哈淖尔露天矿西帮为研究对象,在工程地质调查基础上,运用理论分析与数学计算相结合的方法,量化爆破荷载对边坡损伤程度,建立边坡爆破振动损伤函数关系式,计算边坡破坏时间,确定最危险区域;同时,运用FLAC^3D有限元差分软件建立11个边坡地质模型,模拟分析边坡爆破振动损伤程度,并与理论分析结果进行对比。研究结果表明:边坡损伤程度与爆破距离成反比关系,随爆破作用次数增加,边坡损伤程度呈指数衰减,连续11次爆破后边坡发生破坏,最危险区域距离爆破起始位置150～200 m。

关键词: 爆破振动, 边坡损伤, 稳定性分析, 最危险区域, 数值模拟

Abstract: In order to explore the law of blasting vibration damage to slope in open-pit mine and improve its safety, an experimental study was carried out on the west slope of Zahanaoer open-pit mine in Huolinhe of Inner Mongolia taken as the research object. On the basis of the engineering geological survey, the slope damage degree by blasting load was quantified and a damage function on the slope blasting vibration was established by the comprehensive methods of theory analysis and mathematics calculation, then the slope destructive time was calculated and the most dangerous area was identified. Meanwhile, a slope geology model was built by using FLAC^3D finite element analysis software to analyze the slope blasting vibration damage degree. A comparison was made between the simulation results and the calculation results. The research results show that the slope damage degree is inversely proportional to the distance between the measuring point and the blasting center, and the slope damage degree experiences exponential attenuation with the increasing of blasting times, and that the slope becomes damaged after 11 consecutive blasting and the most dangerous area is 150-200 meters away from the initial blasting area.

Key words: blast vibration, slope damage, stability analysis, most dangerous area, numerical simulation

中图分类号:

X936

曹兰柱, 王珍, 王东. 边坡受爆破振动损伤及其稳定性分析[J]. 中国安全科学学报, 2018, 28(2): 75-80.

CAO Lanzhu, WANG Zhen, WANG Dong. Law of blasting vibration damage and stability analysis to slope in open-pit mine[J]. China Safety Science Journal, 2018, 28(2): 75-80.

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边坡受爆破振动损伤及其稳定性分析

Law of blasting vibration damage and stability analysis to slope in open-pit mine

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