大当量爆炸地冲击毁伤效应的理论与试验研究I：深埋洞室地冲击破坏的现场实测分析

doi:10.13722/j.cnki.jrme.2021.0761

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摘要为厘清地冲击扰动作用下的深埋洞室破坏机制，建立地冲击毁伤的判别准则，系统总结、分析国内外大当量地下爆炸试验及爆破中的深埋洞室破坏现象及规律。按照距爆心的距离，将爆炸破坏分为地冲击破坏和诱发工程性地震破坏2种。采用经验估计和应力判别2种方法，计算并对比地冲击破坏各分区的边界范围和破坏特征。通过系统总结、分析现有研究，提出岩体的含能特征和构造特征是诱发工程性地震破坏产生的原因。进而从块系介质变形的本质入手，梳理爆炸条件下块系介质变形的基本概念和力学模型，分析比例爆距和激活块体尺度的关系。而后综合现有研究，提出以能量因子为参量的破坏效应分析方法，得到不同爆炸当量下位移的边界范围，并以能量因子为指标参数，实现了从近区到远区、从封闭爆炸到触地爆炸的各破坏区变形的统一表征，为大当量地下爆炸条件下安全范围确定及相关工程防护技术建立奠定了理论基础。

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	李志浩1
	李杰1
	2
	王明洋1
	2
	蒋海明1
	吴红晓3
	潘越峰3
	陈伟4
	王德荣1

关键词 ：岩石力学, 深部洞室, 地冲击破坏, 工程性地震, 不可逆位移, 大当量爆炸

Abstract：In order to clarify the failure mechanism of deep buried caverns under the action of ground impact disturbance and to establish the criterion of ground impact damage，phenomena and laws of ground impact damage in large equivalent underground explosion test and blasting at home and abroad are systematically summarized and analyzed. According to the distance to the center of explosion，the damage caused by explosive can be divided into ground impact damage and induced engineering earthquake damage. The boundary range and failure characteristics of each zone of ground impact failure are calculated and compared by using two methods of empirical estimation and stress discrimination. Based on the systematic summary and analysis of the existing researches，it is pointed out that the energy-bearing and structural characteristics of rock mass are the causes of induced engineering earthquake damage. Then，the basic concept and mechanical model of block medium deformation under explosion are summarized，and the relationship between the size of activated blocks and the proportional blast center distance is analyzed from the essence of block medium deformation. Finally，a failure effect analysis method taking the energy factor as a parameter is proposed based on the existing researches，and the boundary range of the displacement under different explosion equivalents is obtained. The unified characterization of the deformation in each failure zone from near zone to far zone and from closed explosion to ground touching explosion is achieved by using the energy factor as the index parameter. The research lays a theoretical foundation for the determination of the safety range and the establishment of related engineering protection technology under the condition of large equivalent underground explosion.

Key words： rock mechanics deep buried caverns ground impact failure engineering earthquake irreversible displacement high yield explosion

引用本文:

李志浩1，李杰1，2，王明洋1，2，蒋海明1，吴红晓3，潘越峰3，陈伟4，王德荣1. 大当量爆炸地冲击毁伤效应的理论与试验研究I：深埋洞室地冲击破坏的现场实测分析[J]. 岩石力学与工程学报, 2022, 41(5): 865-876.
LI Zhihao1，LI Jie1，2，WANG Mingyang1，2，JIANG Haiming1，WU Hongxiao3，PAN Yuefeng3，CHEN Wei4，WANG Derong1. Theoretical and experimental study on ground impact damage effect under large equivalent explosion. Part I：Field measurement analysis of ground impact failure phenomenon of deep buried caverns. , 2022, 41(5): 865-876.

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http://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2021.0761 或 http://rockmech.whrsm.ac.cn/CN/Y2022/V41/I5/865

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