Deformation failure analysis and identification method of zoning type of actual tunnel surrounding rock

IF 1.1 Q3 ENGINEERING, CIVIL Archives of Civil Engineering Pub Date : 2023-12-21 DOI:10.24425/ace.2023.147676

Wei Jing, Yunlong Gao, Rencai Jin, Laiwang Jing

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Abstract

: The research on deformation zoning mechanism of tunnel surrounding rock is of great signiﬁcance for ensuring safe production and disaster prevention in coal mines. However, the traditional deformation zoning theory of tunnel surrounding rock uses the ideal strain softening model as the criterion for judging the zoning type of all tunnel surrounding rock, ignoring the diﬀerence between the deformation zoning type of a speciﬁc actual tunnel and the basic zoning type of surrounding rock. In order to study the method for determining the actual deformation zoning type of tunnel surrounding rock, the formation mechanism of the actual deformation zoning of tunnel surrounding rock has been revealed.Combinedwithengineeringexamples,amethodfordeterminingtheactualdeformationzoning type and boundary stress of speciﬁc tunnel surrounding rock has been proposed. The results show that the boundary stress and position of the actual deformation zone are determined by the peak strength ﬁtting line, residual strength ﬁtting line, support strength line, and the position of the circumferential and radial stress relationship lines of each deformation zone. The actual boundary stress of each zone of tunnel surrounding rock is ultimately only related to the basic mechanical properties of the tunnel surrounding rock and the in-situ stress ﬁeld. The research results can provide reference for disaster management of underground engineering

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来源期刊

Archives of Civil Engineering ENGINEERING, CIVIL-

CiteScore

1.50

自引率

28.60%

发文量

审稿时长

24 weeks

期刊介绍： ARCHIVES OF CIVIL ENGINEERING publish original papers of the theoretical, experimental, numerical and practical nature in the fields of structural mechanics, soil mechanics and foundations engineering, concrete, metal, timber and composite polymer structures, hydrotechnical structures, roads, railways and bridges, building services, building physics, management in construction, production of construction materials, construction of civil engineering structures, education of civil engineers.