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Western Han high speed Qinling No. Ⅱ grew up in the tunnel surrounding rock stability

Author: ChenYongXiang
Tutor: ZhangJun；WangFaRong
School: Chang'an University
Course: Geological Engineering
Keywords: Environmental and geological background Regional crustal stability Surrounding rock mass types Influencing factors of surrounding rock stability Rock Stability Evaluation Qinling No. Ⅱ Tunnel
CLC: U452.12
Type: Master's thesis
Year: 2005
Downloads: 225
Quote: 4
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Abstract


The Xi'an Qinling Mountains . Ⅱ - Hanzhong Expressway Tunnel instance , first of all , two different levels of the project area range starting from the study area , introduced the the environmental geological background of the research object , from the overall analysis of the Qinling No. Ⅱ Tunnel regional environmental and geological background ; then , two aspects of the characteristics of regional crustal activity depth study regional crustal evolution of the study area and the deep structure characteristics , combined with radon testing means focusing on regional faulting characteristics of the study area test data analysis : fault activity in the study area presents Dongqiang the weak distribution characteristics of West . Taking these two characteristics, the evaluation found that the study area, the regional crustal stability should the unstable region . Combination of on-site research and learned that the main form of Qinling No. Ⅱ tunnel surrounding rock deformation and failure of shear slip and fragmentation loose . On the basis of the analysis of regional crustal stability Qinling tunnel surrounding rock stability . Ⅱ influencing factors analysis that follows five basic independent factors : the rigidity of the rock , the integrity of the rock mass structure plane shear characteristics , the initial stress of surrounding rock and groundwater . Card method and fuzzy comprehensive evaluation method is thus determined through the surrounding rock category are two different types of rock classification method , Qinling No. Ⅱ tunnel surrounding rock stability evaluation , the advantages and disadvantages of proposed adapt to the surrounding rock in the Qinling Tunnel No. Ⅱ taxonomy , the final comprehensive evaluation : the Qinling tunnel No. ⅱ lot on which it is basically stable segment of the the Western Han Expressway linear engineering .

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CLC: > Transportation > Road transport > Tunnel project > Investigation, design and calculation > Survey > Tunnel wall rock surrounding soil testing and classification
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