文献类型：期刊文献

中文题名：沟谷地形下煤炭资源开采覆岩导水裂隙发育规律模拟研究

英文题名：Simulation study on development law of water conducting fissure in overlying strata of coal resources mining under gorge

作者：郭昌贵 徐耀 唐永劲 覃瑶 许猛堂

第一作者：郭昌贵

机构：[1]贵州兴安煤业有限公司糯东煤矿,贵州黔西南561504;[2]贵州理工学院矿业工程学院,贵州贵阳550003

第一机构：贵州兴安煤业有限公司糯东煤矿,贵州黔西南561504

年份：2020

卷号：42

期号：8

起止页码：183-186

中文期刊名：能源与环保

外文期刊名：CHINA ENERGY AND ENVIRONMENTAL PROTECTION

收录：CSTPCD

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)。

语种：中文

中文关键词：沟谷地形;导水裂隙;数值模拟;隔水厚度;垂直距离;塑性区

外文关键词：valley topography;water-conducting fissures;numerical simulation;water barrier thickness;vertical distance;plastic zone

摘要：为探索沟谷地形下煤炭资源开采覆岩导水裂隙发育规律,利用FLAC软件建立了沟谷地下煤层开采数值模拟模型,研究了煤层至沟谷之间不同垂直距离的覆岩导水裂隙发育规律。研究结果表明:随着煤层至沟谷垂直距离的增加,沟谷底塑性区高度变化不大,约8 m,而煤层上覆塑性区高度随之增加,当煤层至沟谷垂直距离为25、35、45、55、65 m时,其煤层上覆塑性区高度分别为14.5、14.9、15.6、16.1、16.5 m;覆岩有效隔水厚度随着煤层至沟谷垂直距离的增加而增加,煤层至沟谷垂直距离愈大,则覆岩与沟谷地段越不容易形成贯通导水裂隙。
In order to explore the development law of water-conducting fissures in the overlying rock for coal resource mining under gully terrain,a numerical simulation model for mining underground coal seams in the valley was established using FLAC software,and the development law of water-conducting fissures in the overlying strata with different vertical distances from the coal seam to the valley was studied.The research results showed that with the increase of the vertical distance from the coal seam to the valley,the height of the plastic zone at the bottom of the valley does not change much,about 8 m,while the height of the plastic zone over the coal seam increases.When the vertical distance from the coal seam to the valley is 25,35,45,55,and 65 m,the heights of the overlying plastic zone of the coal seam are 14.5,14.9,15.6,16.1,and 16.5 m,respectively;the effective thickness of the overlying rock increases with the vertical distance from the coal seam to the valley.The greater the distance,the less likely it is for the overlying rock and the valley section to form a through water-conducting fissure.