鲁中矿区地下开采对竖井井塔楼的影响分析

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1、第25卷第1期岩石力学与工程学报Vol.25No.12006年1月ChineseJournalofRockMechanicsandEngineeringJan.，2006鲁中矿区地下开采对竖井井塔楼的影响分析李文秀，赵胜涛，梁旭黎，戴兰芳(河北大学岩土工程研究所，河北保定071002)摘要：针对鲁中矿区软岩地层地下开采引起岩体移动变形及竖井井塔楼倾斜变形的工程实际情况，将该矿区深埋金属矿体开采引起的岩体移动变形这一客观现象视为一随机事件，建立了开采岩体移动分析数学模型，并利用该模型对开采引起采区岩体移动变形及竖井井塔楼所处地表移

2、动变形进行了具体计算分析。分析结果表明，理论预测值和工程实际观测结果吻合很好；在软岩地层条件下，矿体开采地表移动变形的影响范围有随着采深的增加而逐渐增大的趋势。这些结果可用于矿山竖井及井塔楼的安全评价。关键词：采矿工程；软岩采区；岩体移动；竖井+中图分类号：TD325；TU457文献标识码：A文章编号：1000–6915(2006)01–0074–05INFLUENCEOFUNDERGROUNDMININGONSHAFTTOWERSINLUZHONGMININGAREASLIWen-xiu，ZHAOSheng-tao，LIANG

3、Xu-li，DAILan-fang(ResearchInstituteofGeotechnicalEngineering，HebeiUniversity，Baoding，Hebei071002，China)Abstract：Predictionofgroundmovementsandtheirsurfaceeffectsisanimportantproblemoftherockmassmechanicsintheexcavationactivities，especiallytheoremininginsoftrockmining

4、areas.Whetherplannedoraccidental，suchmovementscancauseconsiderabledamagetostructureslocatedwithintheareaofinfluenceofundergroundminingworks.Exampleistherecentsubsidencesthattookplaceattheendofthe1990sintheLuzhongminingareas.Abetterunderstandingisnecessaryonhowgrounds

5、urfacemovementscanbeimpartedtothesupportedstructureanddamagesit.Basedontheresultsofthestatisticalanalysisofalargeamountofmeasureddatainminingengineering，thefundamentaltheoreticalmodelofgroundsurfacemovementsduetoundergroundminingisestablishedbyusingthetheoryofprobabi

6、lity.Theformulasofrockmassdisplacementsanddeformationsaredevelopedandappliedtothepredictionofthegroundsurfacemovementsduetoundergroundmining.Theagreementofthetheoreticalresultswiththefieldmeasurementsshowsthattheproposedmodelissatisfactoryandtheformulaeobtainedareval

7、id；andthuscanbeeffectivelyusedforanalyzingandpredictingthegroundsurfacemovementsduetoundergroundmininginsoftrockminingareas.Theresultsshowthattheareaofrockmassdisplacementsanddeformationsinoverlyingstratawilldeterioratewiththeincreaseindepth.Theresultscanbeusedforsaf

8、etyassessmentofshaftandthetowers.Keywords：miningengineering；softrockminingarea；rockmassdisplacement；shaft[1～7]是国内外学者们所研究的重大课题，而岩体移1