基于格网法表土剥离时空顺序确定  

Confirmation of topsoil stripping sequence of time and space based on grid method

作　　者：李亚龙[1] 赵艳玲[1] 陈慧玲[1] 胡义强[1] 马龙[1] 滕佳华[1] LI Ya-long ZHAO Yan ling CHEN Hui ling HU Yi-qiang MA Long TENG Jia-hua(Institute of Land Reclamation and Ecological Restoration, China University of Mining and Technology （Beijing）, Beijing 100083, China)

机构地区：[1]中国矿业大学(北京)土地复垦与生态重建研究所,北京100083

出　　处：《中国矿业》2016年第10期97-100,123,共5页China Mining Magazine

摘　　要：地下煤炭开采对地面造成了严重的破坏,尤其是高潜水位矿区,采煤塌陷后,地表极易形成积水,若不及时对其采取措施,将会失去大量宝贵的表土资源。对积水区域预先进行表土剥离,是抢救宝贵表土资源的有效措施。本文基于格网法,首先对研究区进行格网化,以模拟的5个工作面为预计单元对研究区进行沉陷预计,得到涉及积水的格网单元;将各积水格网单元以煤层影响范围角θ向下进行投影,得到其煤层影响范围;以相邻积水格网单元G(5,7)与G(5,8)为例,依据煤层影响范围确定起始预计单元,从起始预计单元开始对其进行分阶段沉陷预计,得到两格网单元达到临界积水时,工作面的开采进度,以此得到它们的积水先后顺序,从而可以科学合理的指导复垦工程的机械施工,提高工作效率。Underground coal mining caused severe impact on the land surface,especially in the area with high groundwater level,the mining subsidence due to the water logging,without timely protection measures,the massive precious topsoil will be lost.The beforehand topsoil stripping of the future water logging area is an effective way to save the topsoil.By application of the grid method,the waterlogging grid units in the study area have been obtained,based on the land surface gridding and the land subsidence prediction in the 5simulative work faces;to find out the impact area of the coal seam by the projection of the waterlogging units with the coal seam impact area angleθ;taking the water grid unit G（5,7）and G（5,8）as an example,to determine the first prediction unit according to the impact area of the coal seam,and predict the subsidence by stage,to calculate the mining progress of the work face when the two grids arrive the waterlogging criticality;therefore,the water logging order of the two units could be obtained.The results could be a reference to the rational conduction of the land reclamation mechanical construction,and enhance the efficiency.

关 键 词：土地复垦 高潜水位 格网法 表土剥离 

分 类 号：TD88[矿业工程—矿山开采]