Support design and practice for floor heave of deeply buried roadway

International Symposium on Resource Exploration and Environmental Science

地球科学;生态环境科学

Liu, Chaoke^1 ; Ren, Jianxi^1 ; Gao, Bingli^1 ; Song, Yongjun^1

School of Civil Engineering and Architecture, Xi'An University of Science and Technology, Xi'an

71005, China^1

关键词: Control technologies;    Deeply buried roadways;    Deformation and failures;    Distributed loads;    Failure characteristics;    Mechanical environment;    Mechanical mechanisms;    Roadway surrounding rock;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/64/1/012032/pdf
DOI  :  10.1088/1755-1315/64/1/012032

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Aiming at the severe floor heave of auxiliary haulage roadway in Jianzhuang Coal Mine, the paper analysed mechanical environment and failure characteristics of auxiliary haulage roadway surrounding rock with the combination of mechanical test, theoretical analysis, industrial test, etc. The mechanical mechanism for deformation and failure of weak rock roadway in Jianzhuang Coal Mine was disclosed by establishing a roadway mechanical model under the effect of even-distributed load, which provided a basis for the design of inverted concrete arch. Based on complex failure mechanism of the roadway, a support method with combined inverted concrete arch and anchor in floor was proposed. The result shows that the ground stress environment has extremely adverse influence on the roadway, and the practice indicates that the floor heave countermeasures can effectively control the floor heave. The obtained conclusion provides a reference for the research and design on control technology of roadway floor heave in the future.