煤层底板突水突变模型

王连国; 宋扬

煤层底板突水突变模型

王连国,
宋扬

山东科技大学,泰安271019

基金项目:

国家自然科学基金资助(批准号:59774001)

详细信息

作者简介:
王连国(1964-),男,博士生,副教授,从事矿业系统研究与教学工作.

中图分类号: TD742
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- 被引次数: 0
出版历程
- 收稿日期: 1998-12-14
- 修回日期: 1999-03-15
- 刊出日期: 2000-04-22

A CATASTROPHIC MODEL OF WATER-INRUSH FROM COAL FLOOR

Shandong University of Science and Technology, Tai′an 271019

摘要

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。
- 煤层底板 /
- 突水 /
- 尖点突变模型
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.
- Coal floor /
- Water-inrush /
- Cusp catastrophic model.

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参考文献(1)

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[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
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