Supporting technology of roadways with thick and soft roof based on energy balance theory

被引：0
|
作者：
Ma Z. [1 ,2 ]
Tao C. [3 ]
Zuo Y. [1 ]
Wu G. [1 ]
Liu P. [1 ]
机构：
[1] School of Mining, Guizhou University, Guiyang, 550025, Guizhou
[2] Research Center of Coal Resources Safe Mining and Clean Utilization, Liaoning Technical University, Fuxin, 123000, Liaoning
[3] Lianyungang Municipal Water Conservancy Bureau, Lianyungang, 222006, Jiangsu
来源：
Ma, Zhenqian (mzq159@163.com) | 2018年 / China University of Mining and Technology卷 / 35期
关键词：
Energy; Mining engineering; Thick and soft roof; Weak structure;
D O I：
10.13545/j.cnki.jmse.2018.03.007
中图分类号：
学科分类号：
摘要：
The essence of roadway deformation process is the accumulation and dissipation of energy, and it can be considered as an instability phenomenon driven by the energy. To solve the control problems of stability of roadways with thick and soft roof, this paper takes the 15107 tailgate of Huangyanhui coal mine as the engineering background to study the energy evolution law under different thickness of soft roof using UEC5.0. As a result, the roadway support principal based on the energy balance theory is proposed. Methods to maintain the roadway stability with thick and soft roof should be done in the following points: 1) Layout of the roadway has to be optimized to avoid stress concentration zones, thus the strain energy could be reduced. 2) Deformation capacity of supports should be enhanced to avoid the failure of the supports when the stress is intensified. 3) Some weak structures should be set in the surrounding rock. Hence, the strain energy could be dissipated so that the load on the support could be reduced at the same time. The roadway support scheme was carried out using the roadway support technology principle based on energy balance, and the field monitoring shows that the deformation of roadway was controlled effectively. Experiences could be provided when the similar condition is encountered. © 2018, Editorial Board of Journal of Mining and Safety Engineering. All right reserved.
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页码：496 / 502
页数：6
相关论文
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