Affiliation:
1. School of Resources, Environment, and Safety Engineering Hunan University of Science and Technology Xiangtan Hunan China
2. Work Safety Key Lab on Prevention and Control of Gas and Roof Disasters for Southern Coal Mines Hunan University of Science and Technology Xiangtan Hunan China
Abstract
AbstractWith the advancement of coal resources mining to the deep part, the control of the surrounding rock of the roadway has become one of the main problems in the field of mining. At the present stage, the bolt support technology of the roadway in China still faces problems such as unclear support mechanism and poor support effect. Based on the mechanism of bolt support, through theoretical analysis and experimental research, this study proposes the differentiated support technology for roadways based on the mechanical response of the plastic zone and applies this method in the Gada Coal Mine. The results of the study showed that the plastic zones with different shapes have different mechanical responses. compared with other plastic zone shapes, the control method of the roadway with a butterfly‐shaped plastic zone is more complex. Consequently, the support design of a bolt should not only consider the scope of the plastic zone of support construction but also grasp the development law of the plastic zone. Effective support measures should be taken as early as possible for roadways with butterfly‐shaped plastic zones to prevent aggressive development of the butterfly‐shaped plastic zone. Field tests show that this support method realizes the ideal supporting effect in practical applications.
Funder
National Natural Science Foundation of China
Subject
General Energy,Safety, Risk, Reliability and Quality
Reference38 articles.
1. Research progress of coal roadway support technology at home and abroad;Shan R;Chin J Rock Mech Eng,2019
2. Research on principles and methods of roadway support design under conventional conditions;Hou G;Chin J Rock Mech Eng,2022
3. Roadway strata control technology by means of bolting‐modification‐destressing in synergy in 1 000 m deep coal mines;Kang H;J China Coal Soc,2020
4. Experimental study on the deformation behaviour, energy evolution law and failure mechanism of tectonic coal subjected to cyclic loads
5. Stability influence factors analysis and construction of a deep beam anchorage structure in roadway roof
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