Study On Mining Technology Of Double-unit Face In Thin Seam

In the past few years, with tthe resource of coal reduced day by day, thin seam mining is gradually recognized. The study of mining technology of double-unit face in thin seam has great practical significance to rational exploitation and utilization of coal resources.Taking the conformity coal mine of Lu’an mining group as research background, mining technology of double-unit face in thin seam are studied, some conclusions are drawn with the method of theory study and computer simulation and some related engineering cases are discussed.The main work and contribution of this thesis are as follows:1、 Based on the study of geology,technology and draft capacity, this paper determined arrangement mode of double-unit face, face length, driving method of cut and support method of cut.2、 Based on theoretical analysis,this paper studied support method of middle roadway, the gob-side entry and face end。3、 Rreasonable malposition of double-unit face and surrounding rock stress distribution by means of3-D numerical simulation。Based on the achievements mentioned above and in combination with the practice of the conformity coal mine of Lu’an mining group,some problems about mining technology of double-unit face in thin seam are solved,the achievements of this paper have very important instructive value to relative construction projects。...