大采高综采工作面端部底煤巷内变坡起底回收技术  

Recovery technology in the roadway with slope-changing and bottom-mining methods of coal near the floor in the face end area of large mining height fully mechanized face

作　　者：袁永[1,2] 屠世浩[1,2] 吴其[1,2] 马小涛[1,2] 屠洪盛[1,2] 白庆升[1,2] 

机构地区：[1]中国矿业大学煤炭资源与安全开采国家重点实验室,江苏徐州221008 [2]中国矿业大学矿业工程学院,江苏徐州221116

出　　处：《煤炭学报》2010年第10期1594-1598,共5页Journal of China Coal Society

基　　金：煤炭资源与安全开采国家重点实验室自主研究课题(SKLCRSM09X02);江苏省"青蓝工程"资助项目;煤炭资源与安全开采国家重点实验室开放研究基金资助项目(08KF12);江苏省普通高校研究生创新计划资助项目(CX09B_120Z)

摘　　要：在对大采高综采工作面端部底煤留设方式分析的基础上,提出了巷内变坡起底回收端部底煤的方法,即在回采巷道内起底、增大巷道高度、降低采巷高差,将由采巷高差造成的工作面端部"坡度"转移到回采巷道内,从而回收端部底煤,提高工作面采出率。研究了起底深度、超前起底长度等关键参数的确定方法,分析了不同起底参数对回采巷道围岩稳定性的影响规律。研究成果在阳泉煤业(集团)有限责任公司寺家庄煤矿15104工作面得到成功应用,工作面采出率提高3.6%。Based on analysis of coal near the floor in the face end area（CFFEA） retaining method at large mining height fully-mechanized face（LMHFMF）,put forward the CFFEA recovery technology with slope-changing and bottom-mining methods.That is,by mining from the bottom in the decompression zone of gateway,increasing the roadway height and reducing the height difference of mining roadway,the end ＂gradient＂caused by the height difference of mining roadway will be transferred to the gateway,which will make CFFEA be recycled and increase the recovery ratio of mining face.It also studies the determination method on mining height from the floor,advanced mining length and other key parameters.And the influence law of different bottom-mining parameters on the stability of gateway surrounding rocks was also researched.The research results are successfully carried out at 15104 mining face in Sijiazhuang Coal Mine of Yangquan Coal Industry（Groups） Co.,Ltd.,and recovery ratio is increased by 3.6%.

关 键 词：大采高综采工作面 端部底煤 采巷高差 起底 采出率 

分 类 号：TD823[矿业工程—煤矿开采]