摘要
本文论述了矿井煤层底板突水是一种由缺陷诱导的局域失稳，特别强调存在两种时间尺度的缺陷变化过程。一种是缺陷发育过程，缺陷由小缓慢地扩张变大，是慢变化；另一种是缺陷失稳过程，缺陷的薄弱破坏引起缺陷的瀑涨，是快变化，这后一过程就是矿井煤层底板突水。据此构造了塞子模型并讨论了模型的基本行为，定量地给出失稳判据，用实例检验模型得到准确率为９２．６％
This paper puts forward a new mechanism of water inrush through the seam floor (WISF). It is emphasised that water inrush is a local destabilization caused by defects. Two kinds of time dimension changes are especially emphasized, one is the developing process of defects which expand gradually from small to large; another is the destabilization of defects, which is a fast change during which the defect expansion is caused by the weak destruction of defects. The later is called WISF. According to this viewpoint, we set up a piston model, discussed the basic behaviors of the model, gave the quantitative criterions of destabilization. And lastly, the model was checked by the examples, and the degree of accuracy reached 92 6%.
出处
《中国岩溶》
CAS
CSCD
1998年第4期331-341,共11页
Carsologica Sinica
基金
国家自然科学基金
关键词
岩溶矿井
矿井突水
煤层底板
突水系统
非线性
Water inrush Non linear Slaving principle Ordinal parameter Phenomenological method
