大寶鼎4號煤層露頭火災(zāi)的數(shù)值模擬及應(yīng)用.pdf

1、西安科技大學(xué)碩士學(xué)位論文大寶鼎4號煤層露頭火災(zāi)的數(shù)值模擬及應(yīng)用姓名：孫寶亮申請學(xué)位級別：碩士專業(yè)：安全技術(shù)及工程指導(dǎo)教師：鄧軍20080415Subject：NumericalSimulationonSpontaneousCombustionofNo4SeamOutcropinDaBaodingandItsApplicationSpecialty：SafetyEngineeringName：SunBaoliangInstructor：D

2、engJunABSTRACT=攀(signature)毖群備包竺生ThespontaneouscombustionofseamoutcropisveryseriousinChinaitnotonlybumsalargenumberofcoal，destroysthecoalseamandendangersthesafetyproductionofcoalminearoundtheSeamoutcrop，butalsoemitslotso

3、fpoisonousgas，pollutesatmosphericenvironmentandcausesbadeffectItisoneofthemajornaturaldisastersthathumanisfacing，SOitisimportanttostudythelawofthespontaneouscombustionofseamoutcropThelawofthespontaneouscombustionofseamou

4、tcropwasstudiedbythemethodofnumericalsimulationinthearticle，whichWasbasedonthespontaneouscombustionofNo4seamoutcropinDaBaoding，PanZhihuaCityandappliedtoinstructthecontrolworkofthespontaneouscombustionFirstaccordingtothef

5、eaturesandthegeologicalmaterialsofthecombustionareathephysicalmodelofNo4seamoutcropWaSestablishedbywayofreasonablesimplificationafterthatthetwo—dimensionalmathematicalmodelofthespontaneouscombustionofSeamoutcropWaSestabl

6、ishedbythepercolationtheorywithporousmediumheattransfertheoryandmaSstransfertheoryThenthekeyparametersofthemathematicalmodel，suchastheairleakageintensity，theoxygenconsumptionrate，theheatemitintensityandthegranularityinfl

7、uencefunctionweredeterminedbytheoreticallyanalyzingthedriveofairleakageandapplyingprogrammedheatingexperimenttostudytheexothermicandoxidationfeaturesofthecoalsamplethatWaSsampledfromNo4coalSeamSecond，theairflowfield，theo

8、xygenconcentrationfieldandthetemperaturefieldofseamoutcropweresimulatedbyFluentunderdifferentpositionandintensityofairleakage，thenobtainedthelawofthespontaneouscombustionofseamoutcropFinally，accordingtotheresultsofnumeri