山丘地形对浅埋7.0 m采高综采面矿压显现的影响

doi:10.16265/j.cnki.issn1003-3033.2018.02.028

中国安全科学学报 ›› 2018, Vol. 28 ›› Issue (2): 164-169.doi: 10.16265/j.cnki.issn1003-3033.2018.02.028

山丘地形对浅埋7.0 m采高综采面矿压显现的影响

邸帅¹, 王继仁¹ 教授, 李冬辉², 戚旭鹏³, 王延生¹

1 辽宁工程技术大学矿业学院,辽宁阜新 123000;
2 大同煤矿集团有限责任公司,山西大同 037003;
3 龙翔投资控股集团有限公司,吉林长春 130000

收稿日期:2017-10-19 修回日期:2017-12-23 出版日期:2018-02-28 发布日期:2020-11-17
作者简介:邸帅 (1991—),男,辽宁铁岭人,博士研究生,研究方向为矿井通风与安全。E-mail: 1150563280@qq.com。
基金资助:
国家自然科学基金资助(51574143)。

Influence of hill topography on ground pressure feature of shallow buried 7.0 m working face

DI Shuai¹, WANG Jiren¹, LI Donghui², QI Xupeng³, WANG Yansheng¹

1 College of Mining Engineering, Liaoning Technical University, Fuxin Liaoning 123000, China;
2 Datong Coal Mine Group Corporation Ltd., Datong Shanxi 037003,China;
3 Longxiang Investment Holding Group Ltd., Changchun Jilin 130000, China

Received:2017-10-19 Revised:2017-12-23 Online:2018-02-28 Published:2020-11-17

摘要/Abstract

摘要： 为分析山丘地形对浅埋煤层大采高综采面矿压显现的影响,以上湾煤矿12205综采面为例,采用理论分析、数值模拟与现场实测方法,研究综采面过平直与山丘地形下矿压显现的异同。通过应力传递力学模型确定山丘坡度、高度为矿压显现主要影响因素,进而利用数值模拟分析坡度、高度对矿压显现的影响。研究表明:与平直地形相比,工作面经过山丘地形时支承压力峰值、峰值点位置和影响范围均增加,大于30°的山丘坡度或大于30 m的高度,可能引起强烈的矿压显现;同时现场实测表明在山丘地形下(坡度45°,高度50 m)矿压显现较为强烈,证明了理论分析与数值模拟的可靠性。

关键词: 山丘地形, 浅埋煤层, 7.0 m采高, 矿压显现特征规律, 力学模型, 支承压力

Abstract: The influence of the hill topography on the ground pressure feature of 12205 working face in Shangwan's coal mine, taken as an example the large mining working faces in a shallow buried coal seam, was studied by means of theoretical analysis, numerical simulation and field measurement. Based on the stress transfer mechanics model, both the slope and the height of the hill were identified as the main influence factors. Then, numerical simulation was used to study the influences of both the slope and the height on the ground pressure feature. The results show the hill terrain influences more heavily both the peak value and the peak position of the bearing pressure than the flat topography does, and the influence range of the former is larger than that of the latter, that the slope is more than 30° or the height is a slope of more than 30° or a height of more than 30m, will generally cause a strong pressure, and that both the theoretical analysis and the numerical simulation conform to the reality.

Key words: hilly terrain, shallow coal seam, 7.0 m mining height, strata behavior regularity, mechanics model, bearing pressure

中图分类号:

X936

邸帅, 王继仁, 李冬辉, 戚旭鹏, 王延生. 山丘地形对浅埋7.0 m采高综采面矿压显现的影响[J]. 中国安全科学学报, 2018, 28(2): 164-169.

DI Shuai, WANG Jiren, LI Donghui, QI Xupeng, WANG Yansheng. Influence of hill topography on ground pressure feature of shallow buried 7.0 m working face[J]. China Safety Science Journal, 2018, 28(2): 164-169.

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山丘地形对浅埋7.0 m采高综采面矿压显现的影响

Influence of hill topography on ground pressure feature of shallow buried 7.0 m working face

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