综放工作面煤体裂隙演化规律研究
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摘要
运用分形理论 ,通过现场观测 ,揭示了综放工作面在支承压力作用下煤体的压裂规律 :硬煤裂隙演化经历两次加密和两次扩展过程 ,中硬煤、软煤经历一次加密和扩展 ,中硬煤以裂隙加密为主、扩展为辅 ,软煤则以裂隙扩展为主、加密为辅
Based on fractal theory and spot observation, the fracture evolution law of coal mass is revealed, which has close relation with the cracking action of abutment pressure in fully mechanized coal face. The fracture evolution of hard coal experiences dense increase and expanding twice, but that of medium-hard coal and soft coal experiences dense increase and expanding once respectively. For medium-hard coal, dense increase is primary and expanding is secondary, and for soft coal, expanding is primary and dense increase is secondary.
Based on fractal theory and spot observation, the fracture evolution law of coal mass is revealed, which has close relation with the cracking action of abutment pressure in fully mechanized coal face. The fracture evolution of hard coal experiences dense increase and expanding twice, but that of medium-hard coal and soft coal experiences dense increase and expanding once respectively. For medium-hard coal, dense increase is primary and expanding is secondary, and for soft coal, expanding is primary and dense increase is secondary.
引文
[1] 谢和平 .分形———岩石力学导论 [M ].北京 :科学出版社 ,1997.
[2 ] 谢和平 ,陈忠辉 ,王家臣 .放顶煤开采巷道裂隙的分形研究 [J].煤炭学报 ,1998,2 3 (3) :2 5 2～ 2 5 7.
[3] 靳钟铭 ,康天合 .煤体裂隙分形与顶煤冒放性的相关研究 [J].岩石力学与工程学报 ,1996 ,15 (2 ) :143～ 149.
[4 ] 康天合 ,曲民强 .断续岩体力学引论 [M ].北京 :地震出版社 ,1998.
[2 ] 谢和平 ,陈忠辉 ,王家臣 .放顶煤开采巷道裂隙的分形研究 [J].煤炭学报 ,1998,2 3 (3) :2 5 2～ 2 5 7.
[3] 靳钟铭 ,康天合 .煤体裂隙分形与顶煤冒放性的相关研究 [J].岩石力学与工程学报 ,1996 ,15 (2 ) :143～ 149.
[4 ] 康天合 ,曲民强 .断续岩体力学引论 [M ].北京 :地震出版社 ,1998.
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