简介:Twenty-fiveyearsago,whenitwasemergedthattheinitialindicationofenvironmentalpollutionandgeologicaldeteriorationresultingfromcoalmining,theyoungXieKechangfocusedhislife-longresearchonthefieldofcoalandchemicalindustries.Andforthelast25years,XieKechanghasnotonlymadesignificantachievementsincleancoalutilizationanditstechnologytransfer,inparticularasanadvisorfortheprovincialpartycommitteeandtheprovincialgovernmentintheirlayingoutofenergy,chemicalandotherheavyindustrialplans,butalso,inhiscapacityasthepresidentofTaiyuanUniversityofTechnologyandprofessorfordoctoralstudents,producedalargenumberofhighcaliberresearchpersonnelinthisfield.OnDec.2,2003,inhisdefensefortheeledionofmembersofChineseAcademyofEngineering(CAE),herespondedemotionally:“Asoneofthescientificandtechnicalworkers,allthatIhavedone,ingoodconscience,istolayagoodfoundationforthesustainabledevelopmentforourposterity.”
简介:引言假定McCoryLake矿山目前处于规划阶段。钻井结果表明:矿山将是高品位、低吨位投资。用7天一周期的时间来规划这个位于加拿大北部的矿山。7天中,工作人员每天将工作12小时,以后的7天,他们将飞回他们家中。目前,规划小组正考虑三种采矿方法(图式各样Ⅰ-1):(a)严格的充填开采法;(b)深孔崩落回采法;(c)垂直后退式开采法。这些采矿方法正在研究之中,原因是矿石和围岩与已知矿石带的泥浆层的接合面高度断裂。根据该地区其他矿山运行的经验表明:在这个矿石带将需要大量的地层支架,或者是工作人员必须远离矿石进行作业,要么进行遥控操作,要么从远离矿石的比较稳定的巷端钻比较长的钻孔直达矿石。矿井的入口将通过立井设置在底帮。假定:不考虑选定的采矿方法,用于立井、通风天井和列于表Ⅰ-1中的全部项目,对于这三种采矿方法而言其代价将是通用的。为简便起见,将这些通用的代价加进为每种