黑龙江科技大学学报2023，Vol.33Issue(6)：861-868,8.DOI:10.3969/j.issn.2095-7262.2023.06.014
褶皱构造区大采高工作面矿压显现三维相似模拟
Three-dimensional similar simulation of mine pressure behavior law behind large height mining face in fold structure area
田臣 1杨增福 2李金刚3
作者信息
- 1. 国家能源集团煤炭与运输产业管理部,北京 100000||黑龙江科技大学 安全工程学院,哈尔滨 150022
- 2. 国能神东煤炭技术研究院,陕西 神木 719000
- 3. 国能神东煤炭补连塔煤矿,内蒙古 鄂尔多斯 017000
- 折叠
摘要
Abstract
This paper presents an investigation of the laws behind overlying strata and mine pressure behavior in mining in large height mining face of folded structure area.The study building on 12514 fully mechanized mining face of Bulianta coal mine as the background,based on the three-dimensional similar-ity simulation,involves designing a three-dimensional similarity simulation test bench integrating crack-stress-displacement monitor,analyzing the settlement coefficient of the folded structure area,observing the development of internal cracks by using a three-dimensional drilling television imaging instrument,and analyzing the stress distribution in the folded area.The research results show that compared to the folded structures of downward mining and upward mining,the peak support pressure in non folded structural are-as is reduced by 10.21%,23.6%,respectively;When the working face is folded during upward min-ing,the pressure on the roof is greater than that during downward mining,with more obvious cracks in roof and more severe damages to the side panels,top and bottom plates;Even if the same vertical stress with small disturbance,it may cause the roof to rupture or fracture.关键词
三维相似模拟/褶皱构造/沉降系数/矿压显现Key words
three-dimensional similarity simulation/fold structure/sedimentation coefficient/mine pressure appear分类
矿业与冶金引用本文复制引用
田臣,杨增福,李金刚..褶皱构造区大采高工作面矿压显现三维相似模拟[J].黑龙江科技大学学报,2023,33(6):861-868,8.
