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根据流固耦合作用的基本理论,依据不同温度下,瓦斯的吸附解吸规律,提出了非等温条件下瓦斯运移的数学模型,给出了用有限元求其数值解的方法及程序。在此基础上,对受温度场影响下煤岩体应力情况进行了数值计算分析,为进行煤层气开采和预防、预测煤和瓦斯突出,合理进行瓦斯抽放等提供了理论基础和科学依据。
According to the basic theory of fluid-structure interaction and according to the law of adsorption and desorption of gas at different temperatures, a mathematical model of gas migration under non-isothermal conditions is proposed. The method and program of numerical solution using finite element method are given. On this basis, numerical calculation and analysis on the stress state of coal and rock mass under the influence of temperature field provide theoretical and scientific basis for coalbed methane exploitation and prevention, prediction of coal and gas outburst, reasonable gas drainage and so on.