資源描述:
《保護層卸壓瓦斯抽采及涌出規(guī)律研究》由會員上傳分享,免費在線閱讀,更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、第23卷第1期采礦與安全工程學(xué)報V0l_23No.12006年3月JournalofMining&SafetyEngineeringMar.2006文章編號:1673—3363(2006)01—0012—07保護層卸壓瓦斯抽采及涌出規(guī)律研究程遠(yuǎn)平,周德永,俞啟香,周紅星,王海鋒(L中國礦業(yè)大學(xué)煤礦瓦斯治理國家工程研究中心,江蘇徐州221008;2.淮南礦業(yè)(集團)有限責(zé)任公司,安徽淮南232001)摘要:隨著我國煤礦開采深度的增加,煤與瓦斯突出礦井和突出煤層的數(shù)量不斷增加,利用保護層開采過程中的被保護層的卸
2、壓作用對卸壓瓦斯進(jìn)行強化抽采,使被保護層由高瓦斯突出危險煤層變?yōu)榈屯咚篃o突出危險煤層,從而實現(xiàn)煤與瓦斯資源的安全高效共采.系統(tǒng)介紹了基于分源原理的回采工作面瓦斯涌出預(yù)測方法,保護層開采及卸壓瓦斯強化抽采技術(shù)的發(fā)展和工程應(yīng)用.結(jié)合淮南潘一礦下保護層和謝一礦上保護層開采及卸壓瓦斯強化抽采實例,將保護層工作面瓦斯涌出量預(yù)測結(jié)果與保護層工作面瓦斯涌出量實測結(jié)果進(jìn)行了對比分析.研究結(jié)果表明,由于保護層開采的卸壓作用,使被保護層卸壓瓦斯抽采率遠(yuǎn)大于被保護層卸壓瓦斯的自然排放率,導(dǎo)致保護層工作面瓦斯涌出量預(yù)測結(jié)果小于實際
3、瓦斯涌出量.關(guān)鍵詞:保護層開采;瓦斯抽采;瓦斯涌出規(guī)律;煤與瓦斯突出;煤與瓦斯安全高效共采中圖分類號:TD712文獻(xiàn)標(biāo)識碼:AKDes一care1n.0n1乜='xtractl·onand1l'Dmi·ssi·onTLawsoi一,、ast·orPressure。-ReliefinProtectingCoalSeamsCHENGYuan—ping,ZHOUDe—yong,YUQi—xiang,ZHOUHong—xing.WANGHai—feng(1.NationalEngineeringandResearc
4、hCenterofCoalGasControl。ChinaUniversityofMining&Technology.Xuzhou,Jiangsu221008,China2.HuainanMining(Group)Co.Ltd.,Huainan,Anhui232001.China)Abstract:WiththeincreaseofexploitingdepthofcoalminesinChina,thenumberofcoalminesandcoalseamswithoutbursthazardkeeps
5、increasing.Usingpressurereliefeffectsoftheprotectedseamstoextractforciblypressure-reliefgas,coalseamswithhighmethaneandoutbursthazardcanbesafelychangedtotheoneswithlOWmethaneandnooutbursthazard.Asaresult,thesafeandhighefficientexploitationofgasandeoalcanbe
6、realized.Thesystem—icpredictingmethodofmethaneemissioninworkingfaceisintroducedbasedontheprineipleoftellingapartit’ssources.Thedevelopmentandengineeringapplicationofthetechnologyforexploitingtheprotectingseamsandthetechnologyforforciblyextractingthepressur
7、e-reliefgasarealsointroduced.AccordingtothepractiealdatainPanjiNo.1mineandXiejiNo.1mineofHuainancity,thecomparisonofthepredictingresultsofgasemissionwiththepraetiealonesinprotectingworkingfacesindicatetheextractingrateofpressure—reliefmethaneismuchgrea—ter
8、thanthenaturalemissionrateinprotectedcoalseamsbecauseofthepressure—reliefeffectofprotectingseams.Thisleadstothatthepredictedamountofmethaneemissionislessthanthepracticaloneinprotectedseams.Keywords:protecting