综采工作面大角度旋转俯采技术研究  

Research on large angle rotary mining technology for fully-mechanized mining face

作　　者：李顺顺 高召宁[1,2] LI Shunshun;GAO Zhaoning(Province and MOE Joint Key Lab of Mine Safety and High Efficient Mining,Anhui University of Science and Technology,Huainan232001,China;Anhui Provincial Key Lab of Deep Coal Mines Excavation Response and Disaster Prevention and Control,Anhui University ofScience and Techrwlogy,Huainan232001,China)

机构地区：[1]安徽理工大学煤矿安全高效开采省部共建教育部重点实验室,安徽淮南232001 [2]安徽理工大学深部煤矿采动响应与灾害防控安徽省重点实验室,安徽淮南232001

出　　处：《煤炭科学技术》2019年第6期133-138,共6页Coal Science and Technology

基　　金：国家自然科学基金资助项目(51874002)

摘　　要：为解决芦岭矿Ⅱ104东翼采区原设计布置的3个工作面造成的回采巷道布置困难、工作面搬家频繁、综采工作面连续推进长度短的问题,利用数值模拟和现场观测,并基于Ⅱ104东翼采区煤层赋存条件及原巷道布置特点,将原设计的3个工作面合为1个Ⅱ1041工作面,对综采大角度旋转开采方案、工艺参数和旋转技术要求、矿压显现规律等关键技术进行了研究,并对整个采场的采动应力变化规律进行了分析,有效解决了Ⅱ1041工作面旋转开采期间刮板输送机的上下窜动以及支架旋转角度控制的问题。研究结果表明:采用进刀比为1:8的旋转开采方案,经过54个循环,共旋转74°,旋转期间支架最大工作阻力为6481kN,与额定工作阻力相比仍有4.7%的富余量,且支架无倒架、挤架的现象。实现了工作面在复杂条件下不搬家,连续推进,保证了工作面的正常回采。In order to solve the problem that the layout of the mining roadway caused by the three working faces of the original design of the east wing mining area II104 of the Luling Mine is difficult,the moving is frequent,and the continuous length of the fully mechanized mining face is short,using numerical simulation and field observation,and based on the original conditions of the coal seams in the II104 East Wing mining area and the characteristics of the roadway layout,the three working faces of the original design were combined into a II1041 working face.The key technology for the fully mechanized large-angle rotary mining plan,the process parameters and the rotating technology requirements,and the mining pressure law were studied combined with numerical simulation.The research was carried out to analyze the variation law of mining stress in the whole stope,and the method of controlling the up and down movement of the conveyor during the rotation of the II1041 working face and the control of the rotation angle of the bracket was put forward.The research results show that: with an adoption ratio of 1∶8,after 54 cycles,a total of 74° roration is completed.The maximum working resistance of the bracket during rotation is 6 481 kN/frame,and there is still a surplus of 4.7%.This has ensured the normal recovery of the working face.

关 键 词：旋转开采 大角度旋转 俯采 矿山压力 

分 类 号：TD823[矿业工程—煤矿开采]