某煤业33011与31011工作面之间下分层煤柱安全开采建设可研报告

表61所示。表STYLEREF1\s6SEQ表\*ARABIC\s11充填设备清单及费用序号材料名称规格、型号数量参考价格费用1双液注浆泵2ZBSB8-1.1/6-22防爆2560001120002搅拌桶JB-1000防爆517500875003混合器243408680总计2081802）材料费用31011瓦斯尾巷原断面宽高为3m2.3m，经历两次采动影响巷道断面收缩及巷内木垛，其断面明显缩小，设计时按断面3m2计算，31011瓦斯尾巷按600m计算，充填体积为1800m31011回风顺槽和33011回风顺槽巷道底宽按3m计算，充填高度按0.5m计算，充填长度按600m计算，需要充填体积也为1800m3综上，所需充填材料费用为160万元左右。Editor'snote:JudsonJonesisameteorologist,journalistandphotographer.HehasfreelancedwithCNNforfouryears,coveringsevereweatherfromtornadoestotyphoons.FollowhimonTwitter:@jnjonesjr(CNN)--Iwillalwayswonderwhatitwasliketohuddlearoundashortwaveradioandthroughthecracklingstaticfromspacehearthefaintbeepsoftheworld'sfirstsatellite--Sputnik.IalsomissedwatchingNeilArmstrongstepfootonthemoonandthefirstspaceshuttletakeoffforthestars.Thoseeventswerewaybeforemytime.Asakid,Iwasfascinatedwithwhatgoesoninthesky,andwhenNASApulledtheplugontheshuttleprogramIwasheartbroken.Yettheprivatizedspaceracehasrenewedmychildhooddreamstoreachforthestars.Asameteorologist,I'vestillseenmanyimportantweatherandspaceevents,butrightnow,ifyouweresittingnexttome,you'dhearmyfoottappingrapidlyundermydesk.I'manxiousforthenextone:aspacecapsulehangingfromacraneintheNewMexicodesert.It'slikethesetforaGeorgeLucasmoviefloatingtotheedgeofspace.YouandIwillhavethechancetowatchamantakealeapintoanunimaginablefreefallfromtheedgeofspace--live.The(lackof)airupthereWatchmanjumpfrom96,000feetTuesday,IsatatworkgluedtothelivestreamoftheRedBullStratosMission.Iwatchedtheballoonspositionedatdifferentaltitudesintheskytotestthewinds,knowingthatiftheywouldjustlineupinaverticalstraightline"we"wouldbegoforlaunch.IfeelthismissionwascreatedformebecauseIamalsoajournalistandaphotographer,butaboveallIlivefortakingaleapoffaith--thefeelingofpushingtheenvelopeintounchartedterritory.Theguywhoisgoingtodothis,FelixBaumgartner,musthavethatsamefeeling,atalevelIwillneverreach.However,itdidnotstopmefromfeelinghispainwhenagustofswirlingwindkickedupandtwistedthepartiallyfilledballoonthatwouldtakehimtotheupperendofouratmosphere.Assoonasthe40-acreballoon,withskinnothickerthanadrycleaningbag,scrapedthegroundIknewitwasover.HowclaustrophobiaalmostgroundedsupersonicskydiverWitheachtwist,youcouldseethewrinklesofdisappointmentonthefaceofthecurrentrecordholderand"capcom"(capsulecommunications),Col.JoeKittinger.HehunghisheadlowinmissioncontrolashetoldBaumgartnerthedisappointingnews:Missionaborted.ThesupersonicdescentcouldhappenasearlyasSunday.Theweatherplaysanimportantroleinthismission.Startingattheground,conditionshavetobeverycalm--windslessthan2mph,withnoprecipitationorhumidityandlimitedcloudcover.Theballoon,withcapsuleattached,willmovethroughthelowerleveloftheatmosphere(thetroposphere)whereourday-to-dayweatherlives.ItwillclimbhigherthanthetipofMountEverest(5.5miles/8.85kilometers),driftingevenhigherthanthecruisingaltitudeofcommercialairliners(5.6miles/9.17kilometers)andintothestratosphere.Ashecrossestheboundarylayer(calledthetropopause),hecanexpectalotofturbulence.Theballoonwillslowlydrifttotheedgeofspaceat120,000feet(22.7miles/36.53kilometers).Here,"FearlessFelix"willunclip.Hewillrollbackthedoor.Then,Iwouldassume,hewillslowlystepoutontosomethingresemblinganOlympicdivingplatform.Below,theEarthbecomestheconcretebottomofaswimmingpoolthathewantstolandon,butnottoohard.Still,he'llbetravelingfast,sodespitethedistance,itwillnotbelikedivingintothedeependofapool.Itwillbelikeheisdivingintotheshallowend.SkydiverprepsforthebigjumpWhenhejumps,heisexpectedtoreachthespeedofsound--690mph(1,110kph)--inlessthan40seconds.Likehittingthetopofthewater,hewillbegintoslowasheapproachesthemoredenseairclosertoEarth.Butthiswillnotbeenoughtostophimcompletely.Ifhegoestoofastorspinsoutofcontrol,hehasastabilizationparachutethatcanbedeployedtoslowhimdown.Histeamhopesit'snotneeded.Instead,heplanstodeployhis270-square-foot(25-square-meter)mainchuteatanaltitudeofaround5,000feet(1,524meters).Inordertodeploythischutesuccessfully,hewillhavetoslowto172mph(277kph).Hewillhaveareserveparachutethatwillopenautomaticallyifhelosesconsciousnessatmachspeeds.Evenifeverythinggoesasplanned,itwon't.Baumgartnerstillwillfreefallataspeedthatwouldcauseyouandmetopassout,andnoparachuteisguaranteedtoworkhigherthan25,000feet(7,620meters).Itmightnotbethemoon,butKittingerfreefellfrom