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针对利用煤层瓦斯抽采并防治瓦斯灾害的问题.本文利用含瓦斯煤热流固耦合三轴伺服渗流装置,进行不同温度条件下的三轴压缩破坏试验和渗透特性试验,探索煤体温度在瓦斯抽采和预防煤与瓦斯灾害中的作用.结果表明:(1)煤体的强度随着温度的增加而降低;(2)煤体变形过程中的渗透性变化趋势有一致性,它与变形量直接相关,受温度影响很小;(3)控制煤体温度是提高瓦斯抽采效果的一个合理有效的措施.
Aiming at the issue of utilizing coal seam gas drainage and preventing gas disasters, this paper makes use of the three-axis servo fluid seepage device with gas, coal and heat to carry out triaxial compression failure test and permeability test under different temperature conditions to explore the coal gas temperature in the gas pumping The results show that: (1) the strength of coal decreases with the increase of temperature; (2) the change trend of permeability in coal deformation is consistent, and it is consistent with the deformation Directly related, little affected by temperature; (3) control of coal temperature is to improve gas extraction effect of a reasonable and effective measures.