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《Coal Science and Technology》 2014-07
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Rotary Mining Technology of Fully-Mechanized Coal Mining Face in Deep Inclined Thick Seam with Soft Roof,Soft Coal and Soft Floor

LU Wei;YANG Ke;YANG Xiao-jie;HUA Xin-zhu;MIAO Jian-hua;Province and MOE Joint Key Lab of Mine Safety and High Efficient Mining,Anhui University of Science and Technology;Anhui Provincial Key Lab of Deep Coal Mine Excavation Response and Disaster Prevention and Control,Anhui University of Science and Technology;Panbei Mine,Huainan Mining Group Corporation Limited;  
In order to reduces the coal resource lost,a rotary fully-mechanized coal mining technology was applied to the deep inclined(30°) seam with soft roof,soft coal and soft floor in Panbei Mine. A rotary mining method with a feeding ratio of 1∶ 3 and the key technical plan of the rotary mining were designed. Over excavation and single square support were conducted in the transportation gateway and the air return gateway in order to adjust the direction of the stage loader and the belt conveyor and to keep the equal length of the coal mining face. Anti sliding jack and chain were connected with the hydraulic support and the scraper conveyor in order to reduce the sliding downward of the scraper conveyor and to keep the integrated stability of units. Chain meshes paved on the roof and H steel were connected at the front of supports in order to enhance the roof control and to prevent the spalling and roof falling occurred. The practice results showed that the application of the above technology could ensure the safety and high efficient rotary mining of the deep inclined coal mining face in the thick seam with soft roof,soft coal and soft floor. During the rotary mining period,a daily production of mining face could reach 93. 1%of the normal fully-mechanized coal mining period and the economic results of the rotary mining were excellent.
【Fund】: 国家自然科学基金资助项目(51374011)
【CateGory Index】: TD823.97
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