松軟煤層煤壁淺孔注水防片幫技術(shù)研究.pdf

1、安徽理工大學(xué)碩士學(xué)位論文松軟煤層煤壁淺孔注水防片幫技術(shù)研究姓名：周大為申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：安全技術(shù)及工程指導(dǎo)教師：王佰順20090601安徽理jl：人學(xué)碩十學(xué)位論文Abs仃actBasedonanalysisaboutstatusofcoalseaminfusiontechnologyandsoftcoalseampreventingribspallingtechnologyandusedcoal’Sfailuremechanism

2、、strengththeoryandcoal’Swettingmechanism，themechanismofshallowholesinfusionatcoalwallpreventingribspallinginsoftcoalseamwasanalyzedThroughtheexperimentofsoftcoalseamundertheconditionofdifferentmoisturecontent，analysisofm

3、echanicalpropertiesofcoalwasgotMeanwhilefieldtestWasdoneandeffectsofshallowholesinfusionatcoalwallpreventingribspallinginsoftcoalseamwasverifledInthelaboratorythecoalsamples’mechanicalpropertiesdeterminationtestsunderthe

4、conditionofdifferentmoisturecontentwasdoneThecoalsampleswerefromZhuxianzhuangmineII863fullymechanizedcoalfaceThetestresultsobtained：Thecoal’Scohesionandshearstrengthatmoisturecontentbetween2％一12％increasemonotonicallyshow

5、sthatincreasingcoalmoisturecontentincertainrangeCallchangemechanicalpropertiesofcoalandeffectivelyimprovethecohesionandshearstrengthIncertaincircumstancesofmoisturecontent，witllconfiningpressureincreasing，theshearstrengt

6、handcompressivestrengthwasincreasingIncertaincircumstancesofconfiningpressure，wimtheincreaseofthemoisturecontentcompressivestrengthdrabmonotonicallyThroughtheexperiment，thecontactangleofcoalwateris698degreesandthehydroph

7、ilicWaspoorerInordertoenhancethecoal’Swettingandimprovetheeffectofshallowholesinfusiontowetthecoal，addingsurfactantsinlaboratorytoimprovecoalwettingeffectWasinvestigatedAfteranalysisofexperimentalresultsobtainedintheexpe

8、riment，surfactantinaqueousacid01％sodiumdodecylstupidtoincreaseII863fullymechanizedcoalwettingWasthebestresultsInthepaperfieldtestofshallowholesinfusionatcoalwallpreventingribspallinginZhuxianzhuangmineII863fullymechanize

9、dcoalfacewasdoneandtheplanofshallowholesinfusionatcoalwallWasdesignedandimplementedKeytechnologiesofshallowholesinfusionatcoalwallWasconfirmed：waterholeinfusionspacingWas90m；deepholeWas50m；dipangleofholeWas300～40。；sealde