岩石破坏全过程中的能量变化分析

*赵忠虎1,鲁睿2,张国庆3(1.,610065;2.,100039;3.,450052):分析了用能量的方法研究岩石破坏问题的合理性,指出能量是岩石破坏的原动力,从能量的角度进行研究,就有可能发现岩石破坏的机理进而详细分析了岩石变形破坏过程中,各种耗散能和释放能的种类大小以及对岩石破坏所起的不同作用,并分别从宏观和微观的角度研究了在不同的变形阶段中,岩石能量耗散与释放问题作者认为能量耗散导致岩石强度的降低,而能量释放造成岩石的灾变破坏,从能量耗散与释放的观点研究岩石的破坏,可以避免分析复杂的变形过程,有利于简化问题,找到岩石破坏的真正原因,为实际工程提供参考:岩石;变形;破坏;能量耗散;能量释放:TU452,O346.5:A:1005-2763(2006)05-0008-04AnalysisonEnergyTransformationforRockintheWholeProcessofDeformationandFractureZhaoZhonghu1,LuRui2,ZhangGuoqing3(1.CollegeofWaterResource&Hydropower,SichuanUniversity,Chengdu,Sichuan610065,China;2.BeijingBuildingConstructionResearchInstitute,Beijing100039,China;3.TechnologyInstituteofZhengzhouRailwayBureau,Zhengzhou,Henan450052,China)Abstract:Theauthorsanalyzetherationalitytostudytheproblemofrocksdestructionwithenergymethods,andindicatethatenergyisthebasicpowertocauserockfailure.Therefore,fromthepointofenergy,thefailuremechanismofrocksmaybediscovered.Afterexpoundingtherelationshipabouttheenergydissipationandenergyrelease,authorsanatomizethetypes,magnitudeandfunctionsofthediversifieddissipatedenergyandreleasedenergyintheprocessofdeformationandfracture,andstudytheproblemofenergydissipationandenergyreleaseintheeachdeformationphasefromthepointofmacroscopicviewandmicroscopicview.Inthispaper,itisconsideredthatenergydissipationcouldleadtothestrengthreductionandenergyreleasecouldcausethecatastrophicfailuretorocks.Also,fromtheviewpointofenergydissipationandenergyreleasetostudythefailureofrockcanavoidanalyzingthecomplexitydeformationprocessofrock,sothatishelpfultosimplifytheproblemaboutstudyingrockdeformationandfailure.Consequently,itcouldfoundthetruereasonofrocksfailureandofferthereferencetotheengineeringpractice.KeyWords:Rock,Deformation,Destroy,Energydissipation,Energyrelease,,,,,,,[1],,,,,,(),(),,,,,,,,,,,1岩石破坏过程中的能量耗散与释放分析,:Ee,Ep,ISSN1005-2763CN43-1215/TD矿业研究与开发第26卷第5期MININGR&D,Vo.l26,No.52006年10月Oct.2006*:2006-03-17:(50579042).:.(1979-),,,,.E(),Ev,Em,,Ex,6[2],:EEe+Ep+E+Ev+Em+Ex(1),,(2):E=F(Ee,Ep,E,Ev,Em,Ex)(2)1.1,(3)[3]:U=12(xx+yy+zz+yzyz+!zxzx+!xyxy)dxdydz(3),:U=12E[(2x+2y+2z)-2∀(yzx+y+xy)+2(2+∀)(2yz+2zx2xy)]dxdydz(4),,,,,1.2,,,,,[4]:Y=#∃eD=-#%eD=12e!E(D)D!e(5),,,,,,,[5],(6):G=-d&da(6)(6),,,,1.3,,,,[6]:{dp}=∋F(7)∋=-FT[D]{d}A+FT[D]{d}(8)d(p=dp(9)1.4,,,,,,,,,,+d,[7]:N=N0+d)(x)dx=+dm01-3E0m-1exp-1-3E0md(10)W0,:W=NW0(11),,,,,9赵忠虎,等:岩石破坏全过程中的能量变化分析(),,,1.5[8],,,,,,,,,,,[9,10],,TmT∀,,,2岩石变形和能量之间的关系[2,11~13]2.115,5(1)(OA),,,,,,,;1(2)(AB),,,,,(3)(BC)B,,,,,,,,,,,,(4)(CD),BC,,,(5)(DE)D,,,,,,,,,,,,,,D,,,,2.21,,,,;,,,,,,10矿业研究与开发2006,26(5),,,,,,,,,(),(tj-ti),Ee,Eg,:#E∀tj-ti=jidEedt-dEgdtdt(12)#E∀tj-ti0,,,#E∀tj-ti=0,#E∀tj-ti0,,3结论,,,,,,,,,,,:(1),,,,,;(2),,,,,;(3),,;,,,,,,:[1],,.[J].,2004,23(21):3565~3570.[2].[D].:(),2005.[3].()[M].:,2000.[4],,,.[J].,2002,25(9):75~78.[5],.[M].:,2004.[6],,.[J].,2004,23(12):1976~1980.[7]AtkinsonBK.Fracturemechanicsofrock[M].Orlando:AcademicPress,1987.[8],,,.[J].,2004,23(23):3948~3953.[9],,,.[J].,2000,22(1):16~18.[10],,.[J].,1992,10(4):63~69.[11].[J].(B),1990,20(5):524~537.[12].[J].,2000,19(3):265~269.[13],.[J].,2002,21(6):778-781.2007∃%∃采矿技术%(季刊,ISSN1671-2900,CN43-1347/TD)由长沙矿山研究院主办,大16开,98个版,以报道矿山实用性技术成果为主,具有文章实用性强信息量大,既可直接借鉴,又能启迪思路等特点,是矿山采矿工程技术和管理人员互相探讨交流学习的重要园地∃采矿技术%自办发行,每期定价6.0元订阅联系地址:长沙市麓山南路343号∃采矿技术%编辑部;联系人:言军跃;邮政编码:410012;联系电话:[phone];开户行:工商行长沙市左家垅分理处;帐号:1901013009004682376;开户名称:长沙矿山研究院11赵忠虎,等:岩石破坏全过程中的能量变化分析