Analysis of technology for treating and strengthening surrounding
rock masses of a shallow-buried air-raid shelter |
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| Authors: | JIA Jian-qing WANG Hong-tu LI Xiao-hong NIU Hui-ming HU Guo-zhong LI Hui-min |
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| Institution: | 1. Key Lab for the Exploitation of Southwestern Resources & the Environmental Hazard Control Engineering, Chongqing University, Chongqing 400044, China; 2. School of Traffic and Transportation, Lanzhou Jiaotong University, Lanzhou 730070, China |
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| Abstract: | According to the stability analysis of one shallow-buried air-raid shelter of which buried-depth is about 6m to 13 m, a grouting strengthening method for the air-raid shelter is proposed. During the construction, the mixture ratio experiments of two kinds of mortars are made. According to the mixture ratio, it is determined the strengthening materials and their mixture ratio of seepage area and no-seepage area; and according to the real construction, it is determined the grouting process, the spread-radius of the mortars and three kinds terminating-plan of the grouting. It can be concluded that this strengthening measures attain the expecting effects and purposes, according to the testing effect of the spread-radius of the mortars and the compressive strength of drill cores. |
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| Keywords: | air-raid shelter grouting strengthening surrounding rock masses |
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