doi:10.3969/j.issn.1001-358X.2022.01.002厚松散层薄基岩下采煤地表移动规律与数值模拟朱向阳(江苏徐矿能源股份有限公司张双楼煤矿,江苏徐州221616)摘要:基于张双楼煤矿地表移动观测站实测资料,分析了厚松散层薄基岩下采煤的地表移动变形特征,应用FLAC3D数值模拟方法,探讨了厚松散层薄基岩下采煤地表移动变形规律的特点。研究结果表明:厚松散层薄基岩条件下地表移动过程剧烈,下沉盆地陡峭;下沉速度快,滞后时间短,上覆岩层呈整体快速下沉趋势;下沉值大,影响范围广。研究成果可用于指导本矿区建筑物下采煤及村庄保护煤柱留设。关键词:厚松散层;薄基岩;开采沉陷;数值模拟中图分类号:TD325文献标识码:A文章编号:1001-358X(2022)01-0005-04SurfacemovementlawandnumericalsimulationofcoalminingunderthicklooselayerandthinbedrockZhuXiangyang(ZhangshuanglouCoalMine,JiangsuXukuangEnergyCo.,Ltd.,Xuzhou221616,China)Abstract:BasedonthesurveyeddatafromthesurfacemovementobservationstationinZhangshuanglouCoalMine,thecharacteristicsofthesurfacemovementanddeformationofthecoalminingunderthethicklooselayerandthethinbedrockwereanalyzed.UsingFLAC3Dnumericalsimulationmethod,thecharac-teristicsofthesurfacemovementanddeformationlawofthecoalminingunderthethicklooselayerandthethinbedrockwerediscussed.Resultsshowedthatthesurfacemovementprocesswasviolentunderthecon-ditionofthethicklooselayerandthethinbedrock,andthesinkingbasinwassteep,thesinkingspeedwasfast,andthelagtimewasshort,andtheoverlyingrocklayershowedanoverallrapidsubsidencetrend,thesinkingvaluewaslargeandtheinfluencerangewaswide.Researchresultscouldbeusedtoguidethecoalminingunderbuildingsinthisminingareaandtheprotectionofthecoalpillarsinvillages.Keywords:thicklooselayer;thinbedrock;miningsubsidence;numericalsimulation引用格式:朱向阳.厚松散层薄基岩下采煤地表移动规律与数值模拟[J].矿山测量,2022,50(1):5-8.地下煤炭资源被采出以后,会引起岩层和地表的移动与变形,其移动与变形特征与许多地质、采矿因素有密切关系[1]。大量实测资料和研究成果表明,厚松散层薄基岩下采煤所显现的地表移动变形特征相比一般规律存在明显差异[2-5],表现为地表移动过程加快、损害影响范围更远、对建(构)筑物的危害更大。对于厚松散层下采煤地...
