Study On Strata Behavior Regularity Of 11203 Coalface In Xiaojihan Coal Mine

Due to abundant reserves of thick coal seam in our country, fully-mechanized mining of coalface with increasingly prominent mrrits of its technology and significant improvement of the matching equipment, has already become the important development direction in terms of the mining of thick coal seam. However, the complicated conditions,such as the occurrence conditions is different with each other,At the same time,Due to rapid development of mechanized mining bracket,brackets in different coal seam conditions not always adaptability very well. Xiao Jihan as the firest million-ton modern mine in our national plan of “Jurassic coal mine of Yu Wang in northern Shaanxi(North)”, Have a research about it on the Strata behavior regularity of 11203 Coalface and Adaptability of Hydraulic Support is meaningful in practical and theory.Basied on the investgate of engineering geology of in Xiaojihan coal mine, This present paper takes stope and roadway of 11203 Coalface in Xiaojihan coal mine as research objects,analysized the mechanized mining face structure and movement of overlying strata in theory.Have a monitor on the roadway of 11203 Coalfac, the main aspects include hydraulic support quality, two-lane ahead of the stress distribution and two-lane country rock surface,By it we have a comprehensive grasp on the Stress distribution and the law of the stress with fifferent strike and driections.Meanwhile, Study on aaptability of hdraulic Support, esure a good adaption always there.The study revealed and summarized in this kind of coal seam conditions, Face and roadway laws of strata behavior, improve mining technology and support appropriate measures to ensure that face high yield and efficiency is of great significance.