TEST STUDY ON COUPLING RELATIONSHIP BETWEEN PERMEABILITY CHARACTERISTICS AND STRESS OF OUTBURST COAL
ZHAO Hongbao1，2，YIN Guangzhi1，3，LI Xiaoshuang1，3
(1. College of Resource and Environmental Sciences，Chongqing University，Chongqing 400030，China；2. School of Resources and Safety Engineering，China University of Minging and Technology，Beijing 100083，China；3. Key Laboratory for Exploitation of China Southwestern Resources and Environmental Disaster Control Engineering，Ministry of Education，Chongqing University，Chongqing 400044，China)
Abstract：Based on the relationships of gas seepage speed with confining pressure and axial compression which are obtained by conventional triaxial test of gas seepage of outburst coal，the coupling relationship between the gas seepage speed and stress of outburst coal is discussed，and the relationships of gas seepage speed with confining pressure and axial compression with certain gas pressure are established and so is the equation of stress with seepage coefficients. The following results can be drawn. When the gas pressure and axial compression are determined，the gas seepage speed decreases as confining pressure increasing with the relationship of second-order curve relationship. When the gas pressure and confining pressure are determined，the relationship between the gas seepage speed and axial compression is fourth-order curve relationship，and the gas seepage speed of broken Briquette is larger than initial speed. A characteristic parameter，difficulty stress point of gas seepage，is proposed，which is useful for prevention of accidents of coal and gas Dutburst.
赵洪宝,尹光志,李小双，. 突出煤渗透特性与应力耦合试验研究[J]. 岩石力学与工程学报, 2009, 28(S2): 3357-3362.
ZHAO Hongbao1，2，YIN Guangzhi1，3，LI Xiaoshuang1，3. TEST STUDY ON COUPLING RELATIONSHIP BETWEEN PERMEABILITY CHARACTERISTICS AND STRESS OF OUTBURST COAL. , 2009, 28(S2): 3357-3362.
