Similarity criteria and coal-like material in coal and gas outburst physical simulation
Similarity criteria and coal-like material in coal and gas outburst physical simulation作者机构：College of Resources and Environment Science Chongqing University Shazheng Street Chongqing 400030 China Coal Science and Industry Group Chongqing Research Institute Chongqing 40037 China State Key Laboratory of Gas Disaster Monitoring and Emergency Technology Chongqing 40039 China
出 版 物：《International Journal of Coal Science & Technology》 (国际煤炭科学技术学报（英文）)
年 卷 期：2018年第5卷第2期
页 面：167-178页
核心收录：
学科分类：0819[工学-矿业工程] 081903[工学-安全技术及工程] 08[工学]
基 金：Acknowledgements This work was financially supported by the National Key Research and Development Program (2016YFC0801402-4) the National Natural Science Foundation of China (51374236 51574280) Chongqing Frontiers and Application- based Research Program (cstc2015jcyjBX0076). Meanwhile the author would like to thank the reviewers of this paper for their constructive comments and suggestions to improve the publication
主 题：Coal and gas outburst Physical simulation Similarity criteria Similar material
摘 要：Coal and gas outburst is one of the main gas hazards in coal mines. However, due to the risks of the coal and gas outburst, the field test is difficult to complete. Therefore, an effective approach to studying the mechanism and development of outburst is to conduct the similar physical simulation. However, the similarity criteria and similar materials in outburst are the key factors which restrict the development of physical simulation. To solve those problems, this paper has established similarity criteria base on mechanics model, solid-fluid coupling model and energy model, and presented high similar materials. Combining with three groups of similar number, and considering similar mechanical parameters and deformation and failure regularity, the similarity criteria of outburst is determined on the basis of the energy model. According to those criteria, we put forward a similar material consists of pulverized coal, cement, sand, activated carbon, and water. The similar material has high compressive strength and the accordant characteristics with the raw coal, include density, porosity, adsorption, desorption. The new research is promising for preventing and controlling gas hazards in the future.
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