The River Coal Mining Subsidence Under The Governance Model Studied

In order to solve the problem of excavating coal under the river , the paper starts on studying the rule of rock be damaged by excavating coal and analyses the character of the river damaged by excavating coal such as cave in and craze. It provide the content and method for flood control impact estimation . The paper studies the feasibility to excavate coal under the river from renewing the function to damaged river and security and economic and draw a conclusion that excavate coal under the river is feasible. The paper summarizes the developing course of treating with the function of the river which have been damaged by excavating coal under the river be renewed and discuss the shortage of the mode of treating with the river's function be renewed after the river be destroyed in practice and put forward the mode of renewing the river's function be destroyed by excavate coal under the river by integrating the pretreatment method with treatment method after the river destroyed. It discusses the technique of the mode simply. The paper provides the guidance for excavating coal under the river and for river cave controlling. The paper also provides the support for persistent excavate coal under the river in technique.