Study of failure mechanism of floor heave and supporting technology in soft rock of large deformation roadway

被引：0

作者：

Zheng, Pengqiang ^{[1
]}

Chen, Weizhong ^{[1
,2
]}

Tan, Xianjun ^{[1
]}

Dai, Yonghao ^{[1
]}

机构：

[1] State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, 430071, Hubei

[2] Research Center of Geotechnical and Structural Engineering, Shandong University, Jinan, 250061, Shandong

来源：

Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering | 2015年 / 34卷

关键词：

Coal mine; Floor heave; Large deformation; Mining engineering; Roadway; Soft rock; Supporting technique;

D O I：

10.13722/j.cnki.jrme.2014.0185

中图分类号：

学科分类号：

摘要：

As underground resources exploitation goes deeper and deeper, how to effectively control the floor heave becomes a key problem in roadway support. Considering the surrounding rock damage serious and difficult to support of Liuzhuang coal mine in Xinji, combined with the geological environment characteristics of refrigeration cavern of Liuzhuang coal mine, a large number of in-situ and laboratory tests were done including geostress measurement, true triaxial rheological test, physico-mechanical properties of roadway surrounding rock and rock mineral composition analysis. The research results show that floor heave of this roadway is mainly caused by the flowing deformation of the weak wall rock under the influence of high horizontal tectonic stress. Optimized support design is carried out for this roadway based on analysis above, proposing the floor heave control strategy of compressible steel arch and foam concrete combined with pre-stressed anchor cable. The rationality of the scheme is verified by means of numerical simulation. ©, 2015, Academia Sinica. All right reserved.

引用

页码：3143 / 3150

页数：7

共 21 条

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