The Relationship Between Water Conducted Zone Height In The Moderate Hardness Cover Rocks And The Dimensions Of The Strip Longwall

Baced on the mechanics parameter of the fourteenth coal bed in Lingxin- Coal mine,according to the mechanics analysis and similar material simulation and numerical simulation,this dissertation make a study on the creating mechanism and developing law of the water conducted zone height in the moderate hardness cover rocks. After analyses know deformation analysis method is the feasible method to corroborate the largest height of water wonducted zone.By means of a series of analyses,we has obtained the rule and the application term about strip longwall under the water, use the mechanics parameter of the fourteenth coal bed in Lingxin- Coal mine we had calculated the extracing dimensions.The research of this dissertation is probe to guide that water conducted zone brings coming into being and development process . Use the deformation analysis means to analysis the largest height has obvious theory sense .The research of this dissertation can supply reference to mine the coal under water or under the the water and building.