20781.巖質(zhì)工程高邊坡穩(wěn)定性及其控制的系統(tǒng)研究

1、巖質(zhì)工程高邊坡穩(wěn)定性及其控制的系統(tǒng)研究摘要本文結(jié)合典型研究區(qū)工程高ilAtitm研究實(shí)踐，采用現(xiàn)代工程地質(zhì)、巖土工程和巖體力學(xué)的先進(jìn)理論和方法，并引用現(xiàn)代數(shù)學(xué)理論、非線性科學(xué)理論和現(xiàn)代監(jiān)測(cè)技術(shù)、信息技術(shù)，從工程地質(zhì)基礎(chǔ)、穩(wěn)定性分析與評(píng)價(jià)以及穩(wěn)定性控制三大方面，全面系統(tǒng)地研究了巖質(zhì)工程高邊坡的穩(wěn)定性問(wèn)題，不同程度的涉及了巖質(zhì)工程高邊坡穩(wěn)定性研究的所有方面，建立了一套完善的巖質(zhì)工程高邊坡穩(wěn)定性及其控制研究的技術(shù)方法體系。研究成果既解決了研究

2、對(duì)象的工程實(shí)際問(wèn)題，又在巖質(zhì)工程高邊坡研究的基礎(chǔ)理論和方法方面取得了進(jìn)展。Ct要包括:(1)通過(guò)國(guó)內(nèi)外大量典型實(shí)例的現(xiàn)場(chǎng)調(diào)研和對(duì)比研究，系統(tǒng)地總結(jié)了巖體淺表生改造的一般規(guī)律，闡明了淺表生改造對(duì)岸坡應(yīng)力場(chǎng)的大小、方向和范圍的影響、岸坡應(yīng)力場(chǎng)和結(jié)構(gòu)場(chǎng)的分帶規(guī)律、淺表生卸荷變形破裂體系及其對(duì)巖體穩(wěn)定性的控制意義等，豐富和發(fā)展了巖體淺表生改造的理論。(2)深入探討了巖體淺表生改造與邊坡變形破壞的關(guān)系。按照巖體和結(jié)構(gòu)面遭受淺表生改造和重力場(chǎng)條件下

3、邊坡時(shí)效變形繼續(xù)改造的方式和程度，將邊坡巖體劃分為卸荷巖體、卸荷破裂巖體(含:卸荷拉裂體或卸荷松弛體)、變形體和崩塌、滑坡4個(gè)等級(jí)，首次闡明了不同等級(jí)的邊坡巖體的基本特征和工程地質(zhì)意義。(3)將邊坡巖體質(zhì)量分級(jí)與邊坡的穩(wěn)定性相結(jié)合，應(yīng)用模糊數(shù)學(xué)理論，提出了邊坡穩(wěn)定性巖體質(zhì)量分級(jí)的模糊綜合評(píng)判方法針對(duì)邊坡巖體質(zhì)量分級(jí)的CSMR法存在的不足，結(jié)合溪洛渡工程邊坡巖體結(jié)構(gòu)的具體特征，提出了邊坡巖體質(zhì)量分級(jí)修正的CSMR法。(4)采用地質(zhì)分析判斷

4、和計(jì)算機(jī)仿真模擬的方法，分析認(rèn)為，研究區(qū)拱肩槽和進(jìn)水口邊坡整體處于穩(wěn)定狀態(tài)，邊坡開(kāi)挖后的位移量一般在1020cm之間。(5)采用層次性分析原理和復(fù)雜塊體理論，從確定性塊體、半確定性塊體和隨機(jī)塊體三個(gè)層次上對(duì)邊坡塊體的穩(wěn)定性進(jìn)行分析、論證和評(píng)價(jià)，建立了非規(guī)則邊坡塊體穩(wěn)SystematicalResearchontheStabilityofHighRockEngineeringSlopesandItsControlABSTRACTCombi

5、ningwiththeresearchonthehighengineeringslopesinatypicalresearchareathestableproblemsofhighrockengineeringslopehavecomprehensivelyandsystematicallystudiedinthisdissertationfrom3majordomainsnamelyfoundationofengineeringgeo

6、logyanalysisandevaluationofthestabilityandstabilitycontrol.Allaspectsabouttheresearchonhighslopestabilityinrockengineeringareinvolvedindiferentlevelinthisdissertation.Asetoftechnicalandmethodologicalsystemonstabilityrese

7、archofhighslopeinrockengineeringwasperfectlyestablishedbyuseofadvancedtheoryandmethodinmoderngeologicengineeringgeotechnicalengineeringrockmassmechanicsmodemmathematicsandnonlinearscience.Theresearchresultshavenotonlysol

8、vedthepracticalengineeringproblemsbutalsomadegreatprogressinelementarytheoriesandmethodsabouttheresearchonhighslopeinrockengineeringmainlyinclude:1.Throughsiteinvestigationandparallelstudyonagreatdealoftypicalexamplesinh

9、omeandabroadthegenerallawsonepigeneticandsuperficialreconstructionofrockmassaresystematicallysummarizedincludingitsinfluenceonbankslopestressfieldsmagnitudeorientationandscopethezoningrulesofstressandstructurefieldofbank

10、slopetheunloadingdeformationfailuresysteminepigeneticandsuperficialreconstructionanditscontrollingefectonrockmassstability.Allofthoseenrichanddevelopthetheoryonepigeneticandsuperficialreconstructionofrockmass2.Thoroughly

11、discussedtherelationshipbetweentheepigeneticandsuperficialreconstructionofrockmassesandthedeformationfailureofslopes.Accordingtotheconstructionextendofrockmassesanddiscontinuitiesintheepigeneticsuperficialandgravityproce

12、ssthesloperockmassisdividedinto4gradesnamelyunloadedrockmassunloadfracturingrockmass(includeunloadcrackingrockmassandunloadlooseningrockmass)deformingrockmassfallingandsliding.Forthefirsttimethebasiccharacteroftheslopero

13、ckmassindiferentgradesanditssignificanceinengineeringgeologyareprovidedin矛u:J:計(jì)六二卜分3.Amethodoffuzzycomprehensiveclassificationofslopestabilityhasbeenputratingwiththeslopestabilityandapplyingassessmentwhichisusedinthequal

14、ityforwardbycombiningtherockmassqualityfuzzymathematicstheory.InviewofthedeficiencyofChinaslopemassrating(CSMR)methodamodifiedmethodofCSMRhasbeenadvancedconsideringthepracticalfeaturesofrockmassstructureofengineeringslop