井壁中溫度應力的初步研究.pdf

1、中H分類號：!旦2笪：32論文編號：|l壁Y89“26學科分類號：!!Q。5Q!!密級：坌丑安徽理工大學碩士學位論文井壁中溫度應力的初步研究專業(yè)名稱：絲廈王程研究方向：絲廈塞壹導師姓名：趙查握熬援導師單位：塑監(jiān)皇巫撞工程丕答辯委員會主席：鎏砝論文答辯日期：2006年6月f1日安徽理工大學研究生處2llIJ6年6月f多日安徽理工大學碩士論文摘耍AbstractSince1987，nearly60shaftwaHfracturesweret

2、al【enplaceinXuHuaiminjngareaManyresearchesaredoneaboutthemechanismOfshaftwallfracturesAnd，tllepastresearchshowsthattheVenicaladditionalfofceduetothelossofbottomaquiferist置lemainfactorthatresunsinshaftwall丘acturcOntheOthe

3、rhandmoreresearchesaboutthemalstressaredoneinm柚yfields，butonlyfewarerepOnedaboutshaftwanstmcturc0nereponreVealsthattherIllalstrcssisthemaincontrollingfactorforshaftwaUfractureDuetotheabovediffcrentopinions，therese盯choftl

4、le徹alstressaboutshaftwallstmctureisOfsigni6canccintheoryandinpracticeFirstly，thecalculationmetllOdsaresummedupindudinggravitatjonalstress，geostressandadditionalstressbythelossofbottOmaquiferSecondlybecausetlIetemperature

5、fieldismebaset0calculatethe加alstress，F(xiàn)initeDi伍orentiateMethodisusedtosimulatetemperaturefield0fshaftliJling鋤dfourk曲dsOfthermalstrcssaswellastheircalculationmethodsareintroducedAndthen，takeagiVenshaftlininginXuzhou雒卸ex鋤pl

6、e，allthestrcssesarecalculatedincluding孕aVitationalstress，geOstress，additionalstressduetothelossofwaterofbottomaquifcr，鯽dfouTkindsofthemalstressFjnallyt量leregulationsofthesefour越ⅡdsofthemalstressareaIlalyzed，andthepmporti

7、oⅡs孤ecalculatedanddiscusscdforeachstressintIletotalverticals“cssTheaboVeworkshowsthat：1ThethawingsettlementandVerticalrestrainingthemalstressaremaillcomponentsofIhetotalthe珊alstress，upto99％2IbtalverticalthennalstressQfsh

8、aftliningincreaseSwiththeincreaseofdepthandreachesthemaximumneartheinterfaceofbottomaquifera11dbedrockAⅡd，theValuejnsummer(about89Mpa)ismorethanitjnwinter(about71Mpa)31’heratioofthermalstressintotalstressdecreaseswjththe

9、drawdownofbOttomaquifeLIrIsummerandattheinterfaceofbottomaquiferandbedrock，theratioofthe枷alstressintotalverticalstressofshaftwallisabout37％，19％whenthelossofbottomaquiferis5m，35mAndconVersely’theproportionoflossofbottomaq