【摘 要】
：
Creep mechanics characteristics of large scale tectonic coal was studied undergas draingae and disturbance conditions by using the new self-developed coal gas cou-pling three axial creep equipment. The results show that when σ1 is smaller, σ3 is larger,ga
【机 构】
：
Key Laboratory of Ministry of Education Cosponsored by Province and Ministry Laboratory of Safety an
论文部分内容阅读
Creep mechanics characteristics of large scale tectonic coal was studied undergas draingae and disturbance conditions by using the new self-developed coal gas cou-pling three axial creep equipment. The results show that when σ1 is smaller, σ3 is larger,gas pressure and disturbance load are smaller, gassy coal has no disturbance to creep.When σ3 is smaller, gas pressure and σ1 are larger, disturbance load is constant, gassycoal has remarkable effects of disturbance to creep. The concepts of disturbance loadsensitive domain and disturbance creep sensitive domain were put forward. Under sameamplitude disturbance stress condition, blasting disturbance has a stronger influence ongassy coal deformation is related to frequency of disturbance load; gas drainage, blastingexcavation and mining play an important role in coal-gas outbursting. The relationship ofgassy coal creep and gas pressure gradient, the creep constitutive equation built with gaspressure gradient and disturbance load as independent variables within the framework offluid-solid two phases coupling were established.
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