第35卷1期2023年1月中国煤炭地质COALGEOLOGYOFCHINAVol.35No.1Jan.2023doi:10.3969/j.issn.1674-1803.2023.01.09文章编号:1674-1803(2023)01-0050-07安徽恒源煤矿区土壤肥力特征及重金属风险评价马荣1,2,何建国1,2,章梅1,王新富1(1.江苏地质矿产设计研究院(中国煤炭地质总局检测中心),江苏徐州221000;2.中国煤炭地质总局煤系矿产资源重点实验室,江苏徐州221000)摘要:为全面了解煤矿区不同功能区土壤质量和重金属含量特征,为后续煤矸石土地复垦提供决策依据,以恒源矿区为研究区域,分别采集采空塌陷区稳定区、采空塌陷沉降区、矸石堆场区和未受采动影响区四个区域的土壤样品共计30组,开展土壤肥力及重金属含量分析,研究表明:恒源矿区土壤整体呈碱性,塌陷稳沉区和塌陷非稳沉区由于地表沉降,土壤质量受到破坏,土壤中总氮、总磷、速效钾、有效磷、碱解氮等养分流失严重,土壤肥力较差,矸石山周边区土壤肥力最好,未受影响区次之;恒源矿区重金属生态危害强度由强到弱的顺序为Cd、As、Cu、Pb、Cr、Hg、Ni、Zn,重金属均低于风险筛选值,土壤重金属处于低风险状态。关键词:煤矿开采区;地表塌陷;土地复垦;土壤肥力;重金属污染;风险评价中图分类号:X171文献标识码:ASoilFertilityCharacteristicsandHeavyMetalRiskAssessmentinHengyuanCoalMineArea,AnhuiProvinceMARong1,2,HEJianguo1,2,ZHANGMei1,WANGXinfu1(1.JiangsuGeologyandMineralResourcesDesignandResearchInstitute(TestingCenter,CNACG),XuzhouJiangsu,221006;2.KeyLaboratoryofCoalResourcesandMineralResources,CNACG,XuzhouJiangsu,221006)Abstract:Inordertocomprehensivelyunderstandthecharacteristicsofsoilqualityandheavymetalcontentindifferentfunctionalareasofthecoalminingarea,andtoprovidedecision-makingbasisforsubsequentcoalganguelandreclamation,theHengyuanminingareawaschosenasthestudyarea.Andatotalof30groupsofsoilsampleswerecollectedfromfoursites:goafstabilityarea,goafsubsid-encearea,gangueyardareaandunaffectedareatoanalyzesoilfertilityandheavymetalcontent.TheresultsshowedthattheoverallsoilinHengyuanminingareaisalkalineandthesoilqualityinthestableandunstablesubsidenceareaswasdamagedduetothesurfacesubsidence.Inparticular,thesoilnutrientssuchastotalnitrogen,totalphosphorus,availablepotassium,availablephosphorusandal-kali-hydrolyzed...
