关键层理论在保水开采中的应用

在绿色开采思想的指导下，对关键层理论在保水开采中的应用进行了分析。通过算例讨论了三者的关系并分析了岩层变形一渗流耦合系统的复杂性特征，提出应用复杂系统动力学理论解释突水机制的初步设想。研究表明，在承载关键层破断前，承载关键层同时也是保水关键层；在承载关键层破断后，不再具有隔水作用，而保水关键层此时由渗流关键层充当；如果承载关键层破断，并且渗流关键层不存在，则会发生突水现象。岩层变形一渗流耦合动力学系统是具有时变边界、非线性、非均匀性和非连续性等特征的复杂系统。将复杂系统动力学引入突水防治理论研究，可以从本质上描述突水的过程。

Study and Application of Key - stratum - theory in Water - preserved Mining

Application of key - stratum - theory in water - preserved mining is analyzed under the guidance of green mining. Con- cepts of bearing - key - stratum, water - preserved - key - stratum and seepage - key - stratum are illustrated. The relationships among the three kinds of key - stratum are discussed with examples. Based on analyzing the dynamic systems of coupling between the deformation of the strata and the seepage in the strata, a primary thinking to explain the water - inrush mechanism by the complicaeies science is presented. The research shows that, before the breaking of beating - key - stratum, it is also water - pre- served - key - stratum; after the breaking, the bearing - key - stratum can not preserve water any more, and the seepage - key - stratum then serves as the water - preserved - key - stratum; when beating - key - stratum and seepage - key - stratum were bro- ken, water inrush occurred. The dynamic system, in which the deformation of strata and the seepage in strata interact, is a sys- tem that posses complieacies such as variable boundaries non - linearity, heterogeneity, and non - continuity. If put dynamics of complex systems into the study and application of water - inrush control research, the process of water - inrush can be desribed.