《煤礦案例分析》課件

煤礦案例分析主講：康玉平

本溪滿族自治縣田師付鎮(zhèn)鐵剎山村煤礦沈陽礦務(wù)局蒲河煤礦

沈陽市煤炭工業(yè)公司馬古煤礦

傷亡人數(shù)的百分比表〔%〕合計死亡重傷輕傷21899308910045.413.840.8遼寧省煤礦瓦斯(CD)事故傷亡統(tǒng)計表序號案例別事故性質(zhì)時間合計死亡重傷輕傷A11瓦斯06-6-28632753122瓦斯06-7-2254133瓦斯06-9-83344瓦斯06-10-155555瓦斯06-12-2186266瓦斯07-2-15118377瓦斯07-3-18206104小計115591541B88一氧化碳07-6-24294151099瓦斯07-06-3017171010瓦斯07-7-21771111瓦斯07-12-238711212瓦斯(co)08-2-2644

序號案例別事故性質(zhì)時間合計死亡重傷輕傷B137瓦斯08—4—1218162小計83381530C14鐵剎山瓦斯08—4—7523151瓦斯1980—2—241010162瓦斯1980—7—222小計1212E171瓦斯1992—2—2033合計2/8993089F礦中瓦斯爆炸的全過程平安區(qū)、所謂平安區(qū)就既是不爆炸區(qū)，瓦斯含量范圍是由0—2.0%。多氧爆炸區(qū)瓦斯含量范圍CH4=2.0—9.5%，2.化學(xué)反響式CH4+202=CO2+2H2O16644436142.752.253.瓦斯爆炸生成=氧化磷和水蒸氣4.爆炸配比，PB=1∶45.爆炸系數(shù)，BX=0.25000

三.轉(zhuǎn)化爆炸區(qū)1、瓦斯含量范圍CH4=9.5～12.66%2、化學(xué)反響式2CH4+3O2=2CO+4H2O32965672131.752.253、瓦斯爆炸生成一氧化碳和水蒸氣

4、爆炸配比、爆炸系數(shù)1〕CH4=10%Pb-10=269.4/71.6=3.762569Bx-10=71.6/269.4=0.2657752)CH4=11%Pb-11=266.4/78.76=3.382427Bx-11=78.76/266.4=0.2956453)CH4=12%Pb-12=263.4/85.68=3.074229Bx-12=85.68/263.4=0.3252844)CH4=12.66%Pb-12.66=261.4/87.1=3.001148Bx-12.66=87.1/261.4=0.333205瓦斯爆炸配比、爆炸系數(shù)表瓦斯氧氣配比系數(shù)（%）（g）（%）（g）O2/CH4CH4/O2>9.568<19.02724.000000.2500001071.618.864269.43.7625690.2657751178.7618.65266.43.3824270.2956451285.6818.45263.43.0742290.32528412.6687.118.31261.43.0011480.333205

四、少氧爆炸區(qū)1、瓦斯含量范圍CH4%=12.66～23.66%2、化學(xué)反響式2CH4+3O2=2CO+4H2O32965672131.752.253、瓦斯爆炸生成一氧化碳和水蒸氣4、爆炸配比、爆炸系數(shù)Pb-12.66=261.4/87.1=3.001148Bx-12.66=87.1/261.4=0.333205

五、亞爆炸區(qū)1、瓦斯含量范圍CH4%=23.66～42.00%2、化學(xué)反響式相同于少氧爆炸區(qū)3.瓦斯爆炸生成一氧化碳和水蒸汽４．爆炸配比．爆炸系數(shù)１}CH4-23.66=23.66%Pb-228.48/76.16=3.00000Bx-23.66=76.16/228.48=0.333332}CH4-420=42.0%Pb-42.00=173.6/57.9=3.000000Bx-42.00=57.9/173.6=0.33333

六．瓦斯爆炸生成高溫和高壓1．瓦斯爆炸生成高溫1〕CH4%=2.0%Qg=12.4×14.32=177.568Qx=0.24·0.2096(1-CH4%)/0.2096×1428=0.335865Ts=177.568/0.335865=529(℃)2)CH4%=9.5%QG=12.4%×68=843.2QX=0.244(1-9.5%)×1.428=0.3101616TS=843.2/0.3101616=2719℃

3)CH4-4/3%=68/3×4=90.66666CH4%=90.66666/716=12.66%0.1%=0.2096(1-12.66%)=18.31%CH4-12.66=261.4/3=87.1Q8=12.4×87.1=1080QX-12.66=0.24·(1-12.66%)×1428=0.2993316TS=1080/0.2993316=3608(℃)

4)CH4=23.66%O2﹪=0.2096×〔1﹣23.66﹪〕=16.0﹪O2﹣2h=1428×16.0﹪=228.48CM4﹣2h=228.48/=76.16Q8﹣23.66=12.4×76.16=944.4Qx﹣23.66=0.24〔1﹣23.66﹪〕×1.428=0.261632Ts=944.4/0.261632=3610〔0C〕5〕CH4﹪=42﹪O2﹪=0.2096〔1﹣42﹪〕=12.156﹪O2﹣42=1428×12.56﹪=173.6CH4﹣42=173.6/3=57.9Qg=12.4×57.9=71.8Qx=0.24〔1﹣42﹪〕×1.428=0.198777Ts=718/0.198777=3612〔0C〕

2瓦斯爆炸產(chǎn)生高壓CH4﹪=2﹪P1-2﹪=P0×〔273﹢843﹢25〕/〔273﹢25〕=1×〔827/298〕=2.775〔大氣壓〕CM4﹣9.5=9.5﹪P1﹣9.5=P0×〔273﹢843﹢25〕/〔298﹢25〕=1×〔1141.2/298〕=3.829〔大氣壓〕3〕CH4﹣12.66=12.66﹪P1﹣12.66=P0×〔273﹢3608﹢25〕/298=1×〔3906/298〕=13.11〔大氣壓〕

4〕CM4﹣23.66=23.66﹪P1﹣23.66=P0×〔73﹢3908﹢25〕/2985〕CH4﹣42=42.0﹪P1﹣42=P0×〔273﹢3612﹢25〕/298=1×〔3612/298〕=13.12〔大氣壓〕瓦斯爆炸升溫升壓有關(guān)數(shù)據(jù)瓦斯氧氣配比系數(shù)壓力升溫（﹪）（g）（﹪）（g）O2/CH4CH4/O2大氣壓0C214.3220.5457.284/10.25002．75299.56818.962723/10.333310．124271912.6687.118.31269.43/10.333313．111360823.6676.1616.00228.53/10.33331