放頂煤開采頂煤控制技術(shù)研究.pdf

1、山東科技大學(xué)碩士學(xué)位論文放頂煤開采頂煤控制技術(shù)研究姓名：諸葛福民申請學(xué)位級別：碩士專業(yè)：采礦工程指導(dǎo)教師：郭忠平2001.5.1堡主墮壅竺蘭些絲壅——AbstractTheminingactivitiesforseveraldecadesyearshaVeproVent11attheminingmethodwithsub—levelcavingisa11importalltinnoVationfortheminingmethodsand

2、miningtechniquesofthethickaIldex廿lthickcoalseamsbecauseithaschacacteristicsofhighproduction，highefnciency，largesizeofcoallump，lowmtioofd“ving—tomining，lowproductioncost，safetysimpleproductionsystems，a11dgoodeconotechnica

3、lno冊sTherefore，thisminingmethodiswidelyusedinmemaincoalpmductioncountriesHowever，theminingmethodwithsub—Ievelcavingstillhassomenewproblems，suchaslowcoalfecoveryrateandhi曲dincontent’rherefore，athorou曲studyforthetopcoalcon

4、trollingoftheminingmethodwithsub—IevelcaVingshouldbemadeinordertos01VebasicallytheseproblemsThepaperdiscussesmainIytheshapesofthecaving—outbodyinthetopcoal，theparametersandtechniquesofthetopcoalcaving，theeffbctofthetopco

5、alm0VementsonthecaVing—outbodymovements，andthemeasuresofincreasingmecoalrecoveryrateUnderstandtheshapesofthecaVingoutbodyandtheirdevelopingandchallginglawst11roughcoalfaceinVestigation，analyset11een’ectofeachpammeteront1

6、1eshapesofthecaved—outareasinordertopmvideafouIldationfort11esimulationstudiesThemat量lematicalmodelsforsolvingmepar鋤etersofthetopcoalcaVingarefoundedbytheexperimentalstudiesandthecomputersimulations，andthestudyresultsare