摘要
为了研究煤炭开发造成的地表沉陷对坡体变形影响规律,基于FLAC数值模拟软件建立背坡和向坡开采两种数值模拟模型,分析对比了向坡和背坡开采对坡体变形的影响规律。研究结果表明:水平地表下煤炭资源开采对坡体的影响较小,坡体变形量较小;而坡体下煤层开采时,坡体的水平与垂直变形增加幅度均较大。背坡开采的垂直变形较向坡开采有大幅度增加,背坡开采的垂直位移最大值发生在坡体中部,向坡开采垂直位移发生在坡体端部,背坡开采和向坡开采垂直变形量最大值分别为3.9 m和1.5 m。研究成果可为类似条件下煤炭资源开发提供参考依据。
In order to study the influence law of surface subsidence caused by coal development on slope body deformation,two numerical simulation models of back slope and slope mining were established based on FLAC numerical simulation software,and the influence laws of slope and back slope mining on slope body deformation were analyzed and compared.The results of the study showed that:the mining of coal resources under the horizontal surface has little effect on the slope body and the deformation of the slope body is small;while the mining of the coal seam below the slope body,the horizontal and vertical deformation of the slope body both increase by a large margin.The vertical deformation of back slope mining is greatly increased than that of side slope mining.The maximum vertical displacement of back slope mining occurs in the middle of the slope body.The vertical displacement of back slope mining occurs at the end of the slope body.The vertical deformation of back slope mining and side slope mining,the maximum values are 3.9 m and 1.5 m respectively,and the research results can provide a reference for the development of coal resources under similar conditions.
作者
崔玉攀
孙谦
韩老虎
覃瑶
许猛堂
Cui Yupan;Sun Qian;Han Laohu;Qin Yao;Xu Mengtang(Nuodong Coal Mine,Guizhou Xing′an Coal Industry Co.,Ltd.,Qianxinan 561504,China;Institute of Mining Engineering,Guizhou Institute of Technology,Guiyang 550003,China)
出处
《能源与环保》
2020年第9期196-199,216,共5页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
基金
安全生产重大事故防治关键技术科技项目(guizhou-0004-2017AQ)
贵州省高等学校大学生创新创业训练计划项目(S201914440051)。
关键词
背坡开采
向坡开采
数值模拟
垂直位移
坡体变形
back slope mining
toward slope mining
numerical simulation
vertical displacement
slope deformation
