《非达西渗流条件下的单孔注液强度计算模型》.pdf

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1、第35卷第3期V01．35№3矿冶工程2015年06月MININGANDMETALLURGICALENGINEERINGJune2015非达西渗流条件下的单孑L注液强度计算模型①王观石，邓旭，胡世丽，洪本根，罗嗣海(1．江西理工大学建筑与测绘工程学院，江西赣州341000；2．中国地质大学工程技术学院，北京100083)摘要：把潜水非完整孔分解为潜水完整孑L与承压非完整孔，建立非达西渗流条件下的单孔注液强度计算模型，通过室内试验确定渗流指数和渗透系数，比较达西渗流和非达西渗流条件下的注液强度与现场实测注液强度的差异。研究结果表明：潜水

2、非完整注液孔主要以潜水完整孔的形式向矿体注液，同时承压非完整孔的注液强度也是不可忽略的，基于现场实测的单孔注液强度计算得到承压非完整孔液面升高高度约为潜水非完整孔液面升高高度的1／7，承压非完整孔长度约为潜水非完整孔长度的1／4；注液孑L周的渗流过程与达西渗流存在较大误差，当注液孔中液面升高高度为O．4—1．0m时，非达西渗流条件下的计算注液强度与实测注液强度误差小于15％，满足工程要求。关键词：原地浸矿；非达西渗流；潜水非完整孔；注液强度中图分类号：TU432文献标识码：Adoi：10．3969／j．issn．0253-6099．2

3、015．03．002文章编号：0253—6099(2015)03—0004—05ACalculationModelforIntensityofSingle-holeLiquidInjectionunderNon．DarcyFlowConditionWANGGuan—shi，DENGXu，HUShi．1i，，HONGBen．gen，LUOSihai(1．SchoolofArchitecturalandSurveying&MappingEngineering，JiangxiUnive~ityofScienceandTechnology，G

4、anzhou341000，Jiangxi，China；2．SchoolofEngineeringandTechnology，ChinaUniversityofGeosciences，Beqing100083，China)Abstract：Thepartiallypenetratingboreholeinaphreaticaquifercanbedividedintofullypenetratingboreholeinaphreatieaqui~randpartiallypenetratingboreholeinaconfinedaqu

5、ifer．Acalculationmodelwasestablishedfortheintensityofsingle·holeliquidi．jectionundernon-Darcyflowcondition．Theseepageindexandosmoticcoefficientwereconfirmedthroughthelabtest．Thedifferenceinliquid—injectionintensityunderDarcyflowandnon—Darcyflowconditionsbetweenthefieldm

6、easurementandcalculationwasanalyzed．Theresultsindicatedthattheleachingsolutionwasinjectedprincipallythroughfullypenetratingboreholeinaphreaticaquifer．However，theintensityofliquidinjectionthroughpartiallypenetratingboreholeinaconfinedaquifercannotbeignored．Comparedwithth

7、epartiallypenetratingboreholeinaphreaticaqui~r，thepartiallypenetratingboreholeinaconfinedaqui~rwiththelengthaboutitsone—fourth，hasawater—levelrisecalculatedbasedonthefiledmeasurementjustaboutone—seventhofthepreviousone．Therewasabiggererrorbetweentheseepageprocessaroundt

8、heliquid—injectionholeandDareyflow．Asthewater—levelriseintheliquid—injectionholeis0．-1．0m．theerrorbetweentheca