A CATASTROPHIC MODEL OF WATER-INRUSH FROM COAL FLOOR
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摘要: 本文建立了煤层底板突水的一个尖点突变 (cusp)模型 ,并分析了煤层底板失稳破坏发生突水的机制。基于定态曲面方程 ,可求得煤层底板水压应力比 Ip。当 Ip 1时 ,发生突水 ;当 Ip 1时 ,不会发生突水。基于分支曲线方程 ,可求得煤层底板突水临界采动导水裂隙带深度 h1l,当 h1 h1l 时 ,发生突水 ;当 h1 h1l 时 ,不会发生突水。Abstract: A cusp catastrophic model of water-inrush from coal floor is established and a mechanism for water inrush due to the floor instability and destruction is analysed in the paper. The ratio of water pressure and stress, I p, can be derived from the model. When I p1,water-inrush from the floor can be caused. When I p1, water-inrush from coal floor can not be caused. The critical depth of the mining water-conducting fissure zone, h 1l, for water inrush from coal floor can be derived from the bifurcation curve equation. When h 1h 1l, water inrush from coal floor can be caused. When h 1h 1l, water-inrush from coal floor can not be caused.
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Key words:
- Coal floor /
- Water-inrush /
- Cusp catastrophic model.
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[1] 赵全福.煤矿安全手册矿井防治水分册
[M].北京:煤炭工业出版社,1992.Zhao Q uanfu T he p reven tion and harness of m ine w aterin ru sh.Beijing:Coal Indu stry Pub lish ing Hou se,1992.
[2] P.T.德桑斯.灾变理论入门
[M].上海:上海科学技术文献出版社,1983.P.T.Saunders.T he ABC of catastrop he theo ry.Shanghai:Sanghai Science and T echno legy Docum en t Pub lish ing Hou se,1983.
[3] 何广讷等.土工的若干新理论研究与应用
[M].北京:水利电力出版社,1994.H e Guangna etal..T he research and app lication of certionnew theo ry to civil eng ineering.Beijing:W ater Con servancyand E lectric pow er Pu lish ing Hou se,1994.
[4] 张金才.岩体渗流与煤层底板突水
[M].北京:地质出版社,1997.Zhang J incai.etal..Rockm ass p erm eab ility and coal m inew aterin ru sh.Beijing:Geo log ical Pub lish ing Hou se,1997
[5] 李抗抗等.用于煤层底板突水机理研究的岩体原位测试技术
[J].煤田地质与勘探,1997,(3).L i Kangkang,et al.T he techn ique m easu ring the stress ofrockm ass u sed in the study of the m echan ism of the w aterin ru sh from coal flloo r.Coal Geo logy&exp lo ration,1997,(3) -

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