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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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

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	Articles by authors
	LI Zhihao1
	LI Jie1
	2
	WANG Mingyang1
	2
	JIANG Haiming1
	WU Hongxiao3
	PAN Yuefeng3
	CHEN Wei4
	WANG Derong1

Cite this article:

LI Zhihao1,LI Jie1,2, et al. 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[J]. , 2022, 41(5): 865-876.

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

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