LEADER 03663oam 2200517zu 450 001 9910698307103321 005 20210807002450.0 010 $a1-61583-957-7 035 $a(CKB)3240000000001688 035 $a(SSID)ssj0000680639 035 $a(PQKBManifestationID)11930523 035 $a(PQKBTitleCode)TC0000680639 035 $a(PQKBWorkID)10627294 035 $a(PQKB)10290745 035 $a(WaSeSS)Ind00030577 035 $a(OCoLC)232956994 035 $a(EXLCZ)993240000000001688 100 $a20160829d2008 uy 101 0 $aeng 135 $aur||||||||||| 181 $ctxt 182 $cc 183 $acr 200 00$aGuidelines for the prediction and control of methane emissions on longwalls 210 31$a[Place of publication not identified]$cU S Department of Health and Human Services CDC/NIOSH Office of Mine Safety and Health Research$d2008 215 $a1 online resource (83 p.) 225 1 $aDHHS (NIOSH) publication ;$vno. 2008-114 225 1 $aInformation circular ;$v9502 300 $aBibliographic Level Mode of Issuance: Monograph 320 $aIncludes bibliographical references. 327 $a1. Reservoir modeling for predicting methane emissions in development headings (entries) -- 2. Controlling longwall face methane and development mining emissions: predicted improvements using in-seam boreholes -- 3. Characterizing and forecasting longwall face methane emission rates for longer longwall faces -- 4. Predicting methane emissions from longer longwall faces by analysis of emission -- contributors -- 5. Development of numerical models to investigate permeability changes, distributions, and gas emissions around a longwall panel -- 6. Methane emission control during mining of longwall panels using gob gas ventholes -- 7. The application of gob gas ventholes to control methane in wider longwall panels and gobs -- 8. Induced fracturing and coalbed gas migration in longwall panel overburden: the NIOSH borehole monitoring experiment6 -- Practical guidelines for controlling longwall coalbed methane 330 0 $a"Although longwall mining productivity can far exceed that of room-and-pillar mining, the total methane emissions per extracted volume associated with longwall sections are generally higher than those for continuous miner or pillar removal sections. Increased face advance rates, increased productivities, increased panel sizes, and more extensive gate road developments have challenged existing designs for controlling methane on longwalls. Methane control research by the National Institute for Occupational Safety and Health (NIOSH) recently examined a number of practices designed to maintain concentrations in mine air within statutory limits and consistently below the lower explosive limit. In this report, several practical guidelines are recommended for controlling longwall coalbed methane. All predictions are based on determinations made for the Pittsburgh Coalbed in southwestern Pennsylvania." 606 $aMechanical Engineering$2HILCC 606 $aEngineering & Applied Sciences$2HILCC 606 $aMetallurgy & Mineralogy$2HILCC 615 7$aMechanical Engineering 615 7$aEngineering & Applied Sciences 615 7$aMetallurgy & Mineralogy 702 $aSchatzel$b Steven J 712 02$aNational Institute for Occupational Safety and Health. 712 02$aPittsburgh Research Laboratory (National Institute for Occupational Safety and Health) 801 0$bPQKB 906 $aBOOK 912 $a9910698307103321 996 $aGuidelines for the prediction and control of methane emissions on longwalls$93176258 997 $aUNINA