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1、論文題目:薄基巖淺埋深下開采沉陷規(guī)律研究專業(yè):大地測(cè)量學(xué)與測(cè)量工程碩士生:蔣軍(簽名)指導(dǎo)老師:朱慶偉(簽名)摘要薄基巖淺埋深下開采,巖層與地表移動(dòng)變形規(guī)律呈現(xiàn)出特殊性,只有在充分掌握薄基巖淺埋深開采條件下巖層與地表內(nèi)部的沉陷機(jī)理,才能有效指導(dǎo)類似采礦地質(zhì)條件下的開采活動(dòng)。本文以三道溝礦開采現(xiàn)狀為研究背景,運(yùn)用理論分析、曲線擬合和數(shù)值模擬綜合研究方法,對(duì)薄基巖淺埋深開采條件下巖層與地表移動(dòng)變形的力學(xué)機(jī)制及覆巖結(jié)構(gòu)穩(wěn)定性、巖層與地表移動(dòng)參數(shù)及變形規(guī)律等方面進(jìn)行了較為深入的研究。主要結(jié)論有:通過對(duì)巖層及地表移動(dòng)的力學(xué)分析,揭示了薄基巖淺埋深下巖層與地表移動(dòng)的變形機(jī)理;同
2、時(shí),通過深入探討此開采條件下巖層與地表移動(dòng)變形的影響因素,運(yùn)用回歸分析,建立下沉系數(shù)、邊界角、移動(dòng)角與采深、采厚、基載比的函數(shù)關(guān)系;基于三道溝礦地質(zhì)勘測(cè)資料與觀測(cè)站實(shí)測(cè)數(shù)據(jù),通過理論研究,分析了薄基巖淺埋深下地表移動(dòng)變形特征,獲得了各類地表移動(dòng)變形參數(shù);采用曲線擬合的方法求取參數(shù),并通過分析,指出了概率積分法在地表移動(dòng)變形規(guī)律研究中應(yīng)用的可行性;采用FLAC3D數(shù)值模擬軟件,以三道溝礦地質(zhì)條件為基礎(chǔ),獲得了薄基巖淺埋深下開采地表移動(dòng)變形規(guī)律分布情況,并通過分析地質(zhì)采礦因素對(duì)薄基巖淺埋深下開采的影響規(guī)律,及回歸分析方法,建立了采深、采厚與下沉系數(shù)之間的函數(shù)模型。關(guān)鍵字
3、:薄基巖;淺埋深;曲線擬合;數(shù)值模擬研究類型:應(yīng)用研究萬方數(shù)據(jù)萬方數(shù)據(jù)Subject:ResearchonMiningSubsidenceLawsofThinbedrockandShallowburieddepthSpecialty:GeodesyandSurveyingEngineeringName:JiangJun(Signature)Instructor:ZhuQingwei(Signature)ABSTRACTTheruletostrataandsurfacedeformationshowsthespecialtywhichunderthinbedrocka
4、ndshallowburieddepthminingconditions,onlymasterthemechanismthatcanguideminingactivitieseffectivelyinthesimilargeologicalconditions.Theoryresearch,curvefitting,numericalsimulationisappliedinthisdissertationfortheresearchofSanDaoGoucoalmining.Thisthesismakesacomparativelysystematicresear
5、chonstructuralstability,mechanicalmechanism,predictingparametersandtheruleofstrataandsurfacedeformation.Themainconclusionsofthisthesiscontainthefollowingaspects:Firstly,themechanismofstrataandsurfacemovementunderthinbedrockandshallowburieddepthminingconditionsarehighlighted,whichbythei
6、ntegratedstudyofmechanicalmechanism.Secondly,basedonanalyzinginfluencingfactorunderthegeologicalconditions,relationshipbetweenparametersandtheratioofdepthandthickness,theratioofbedrockthicknessandlooselayerthicknessareestablished.Thirdly,atheoreticalanalysiswascarriedoutforthestrataand
7、surfacedeformationcharacteristicswhichbasedongeologicalandsurveyingdatainSanDaoGoumine,Meanwhile,allkindsofsurfacedeformationparametersareobtained,too.Fourthly,predictingparametersarecalculatedbycurvefittingmethod,andpointouttheprobabilityintegralmethodisexpectedtosurfacedeformationi