综放工作面过地堑构造挑顶卧底技术研究
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摘要
本文根据综放工作面设备条件以及地堑构造的几何特征,确定了中煤平朔井工三矿34201工作面过地堑构造时挑顶卧底的控制范围以及单轮挑顶和卧底的角度,计算了该工作面在不同位置处的煤层倾角、工作面方向与断层之间的位置关系。该工作面的挑顶卧底工作流程为"卧底-调斜-挑顶",在过地堑构造期间控制采高为3.5 m。通过挑顶卧底及综采和综放工艺的调整,确保了工作面安全通过地质构造带,有效提高了煤炭资源回收率。
According to the equipment conditions of fully mechanized caving face and the geometric characteristics of graben, the control range of Roof-lifting and undercover,the angle of single-wheel Roof-lifting and undercover are determined, and the position relationship between coal seam dip, direction of working face and fault at different positions of working face is calculated by AutoCAD. The working flow of Roof-lifting and undercover in this working face is "undercover-inclination-roof-lifting". During the period of graben structure, the mining height is controlled by 3.5 m. Through the adjustment of roof lifting and undercover technology,fully mechanized mining technology and fully mechanized top coal caving technology, it is ensured that working face passes through geological structure zone safely, improving effectively the recovery rate of coal resources.
According to the equipment conditions of fully mechanized caving face and the geometric characteristics of graben, the control range of Roof-lifting and undercover,the angle of single-wheel Roof-lifting and undercover are determined, and the position relationship between coal seam dip, direction of working face and fault at different positions of working face is calculated by AutoCAD. The working flow of Roof-lifting and undercover in this working face is "undercover-inclination-roof-lifting". During the period of graben structure, the mining height is controlled by 3.5 m. Through the adjustment of roof lifting and undercover technology,fully mechanized mining technology and fully mechanized top coal caving technology, it is ensured that working face passes through geological structure zone safely, improving effectively the recovery rate of coal resources.
引文
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[3] 张永平,于鹏飞.高河煤矿E1302综放工作面平推过 F1n大断层技术研究[J].煤,2017,26(10):13-15.
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[6] 刘福贵,大坡度俯采综放面采煤技术及设备管理研究与实践[J].煤矿现代化 ,2015,126(3):117-120.
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[8] 杨磷,黄正平.大倾角综采工作面过斜交断层技术[J].煤炭工程,2017,49(5):51-54.
[2] 齐高臣,李鹏,王彦敏.综采工作面初采过断层顶板控制技术.煤炭科学技术,2014,42(4增刊):47-49.
[3] 张永平,于鹏飞.高河煤矿E1302综放工作面平推过 F1n大断层技术研究[J].煤,2017,26(10):13-15.
[4] 杨科,王志根,华心祝,等.超长大采高综采工作面过大落差断层技术及应用[J].煤炭科学技术,2016,44( 6) :89-93,116.
[5] 高长志.安家岭露天煤矿首采区转向时期剥采工程计划优化研究[D].辽宁工程技术大学,2012.
[6] 刘福贵,大坡度俯采综放面采煤技术及设备管理研究与实践[J].煤矿现代化 ,2015,126(3):117-120.
[7] 郭志勇.大采高综采工作面过断层安全回采技术[J].煤,2018,27(4):68-69.
[8] 杨磷,黄正平.大倾角综采工作面过斜交断层技术[J].煤炭工程,2017,49(5):51-54.