【正文】
............. 24 Local ventilation design................................................................................... 26 Local exhaust ventilation system design principles .................................. 26 Local ventilation methods ......................................................................... 27 The choice of a hairdryer .......................................................................... 27 Local fan selection .................................................................................... 28 Local ventilation safety measures ............................................................. 32 Chapter five design of Mine Ventilation ............................................................... 35 survey............................................................................................................... 35 Ida profile .................................................................................................. 35 Estimated on each level gas level change ................................................. 35 The development of the mine ventilation system ............................................ 35 Determine the working methods of the main mine fan ............................. 35 The choice of ventilation system............................................................... 36 Total air volume in the calculation and distribution of mine ........................... 40 Mine resistance to easy and difficult period of the total air volume ......... 40 The mine air quantity calculation .............................................................. 40 Later mine air quantity calculation............................................................ 45 Air distribution and regulation .................................................................. 49 VI speed checking.................................................................................. 50 Calculate the total resistance of the Mine Ventilation ..................................... 53 Draw the work diagram of the ventilation easy times and difficult times ............................................................................................................................ 54 The preparation of the two periods mine ventilation resistance calculatio 56 Mine the natural pressure of the estimates ................................................ 61 Calculate mine the total drag of the two periods and the total plot holes. 61 Select the mine ventilation .............................................................................. 62 Select the mine ventilation requirements .................................................. 62 The choice of main ventilator s ................................................................. 63 Main fan parameters .................................................................................. 67 Select motor ............................................................................................ 67 Budget for the mine ventilation electricity ...................................................... 68 Chapter six ventilation structures set .................................................................... 70 Settings and requirements of the ventilation structures ................................... 70 The requirements of the ventilation work ............................................ 70 Construction requirements of the ventilation structures ........................... 70 The main fan auxiliary equipment settings and requirements of wind cave ... 71 Chapter seven disaster prevention measures........................................................ 73 Gas prevention and control .............................................................................. 73 Dust prevention and control ............................................................................ 74 Fire prevention and control.............................................................................. 75 Flood prevention and control........................................................................... 75 Conclusions .............................................................................................................. 77 Acknowledgements .................................................................................................. 78 References ................................................................................................................ 79 1 1 礦區(qū)及安全概況井田地質(zhì)特征 礦區(qū)概況 位置與交通 東榮三礦位于雙鴨山市北 40km,隸屬于雙鴨山礦業(yè)集有限公司,行政區(qū)劃隸屬于雙鴨山市集賢縣。51′~ 46176。 本井通過礦區(qū)專用鐵路線與佳富線的雙鴨山車站相接,向西經(jīng)佳木斯( 76km);公路與同三公路相通;可通往全國各大城市,交通十分便 地形地勢(shì)及河流情況 井田內(nèi)地勢(shì)平坦 ,地表標(biāo)高為 66~ 67m,井田北部福山屯沙包標(biāo)高 最高點(diǎn)。 C( 1982 年), 1月平均最低氣 溫 。本井田位于三江盆地綏濱~新安鎮(zhèn)坳陷中的東輝~東榮向斜東翼的中段。主要巖性為花崗片麻巖,其次為黑云母片巖,綠泥石片巖等。 ( 3) 、中生界侏羅系,不整合于太古界麻山群或古生界泥盆系之上。 。其軸向?yàn)榻媳钡鸟妨奖承?,為一西緩東陡的不對(duì)稱的背斜。位于福山背斜的南部為一系列軸向北東平緩開闊的小褶皺。多以巖墻產(chǎn)出于煤系地層中。 井田內(nèi)煤層屬于較穩(wěn)定~不穩(wěn)定,結(jié)構(gòu)簡單~復(fù)雜,一般含1~2層夾矸,少數(shù)可達(dá)1~5層。 16 號(hào)煤層:為全井田主要可采煤層,厚 ~ ,平均為 。為較穩(wěn)定煤層,有 1 層夾矸。頂板為粉砂巖和中~粗砂巖,底板為細(xì)砂巖或粉砂巖與細(xì)砂巖互層。精煤全硫比原煤全硫大 ~ %,各種硫中主要是有機(jī)硫。 ( 7) 、煤的風(fēng)化和氧化 根據(jù)宏觀巖石物理變異特征鑒定,第三第底界面下煤系基巖風(fēng)化厚度為 2— ,平均數(shù) 12m(據(jù)地質(zhì)孔,水文孔統(tǒng)計(jì))。 75~ 79 年東煤地質(zhì)局 110 隊(duì)及黑龍江煤田地質(zhì)公司物測(cè)大隊(duì)地震隊(duì)進(jìn)行普查提交《東榮區(qū)地震普查總結(jié)報(bào)告》。區(qū)域東、南分布有別拉音山、雙山子、索力崗山和石場(chǎng)山 7 等構(gòu)造剝蝕殘余丘陵,多呈橢圓形,在福山、黑魚泡等地有松花江殘留二級(jí)階地呈島狀零星分布,福山階地標(biāo)高 1) 、 區(qū)域含水 層 ( 1) 、 第四系孔隙含 9水層 全井田第四系厚度變化較大,從 50m~ 260m,由南往北增厚,成因以沖積、洪積為主,屬坡積物僅山丘斜坡地區(qū)。 ( 4) 、煤系基底巖層裂隙水 主要分布東、南低 山丘陵地區(qū)。 井田水文地質(zhì)條件 1) 、含水層 本井田含水層根據(jù)沉積物特征,地下水成因類型和埋藏條件,可分為第四第含水層、第三系水層和煤系裂隙含水帶。無連續(xù)粘土隔水層,不能再詳細(xì)劃分含水層,第四系只能視為一個(gè)含水層。單位涌水量 ~ 升 /秒 .m,滲透系數(shù) ~ ,水位 ~ ,水位標(biāo)高~ ,水力性質(zhì)為承壓力。裂隙含水帶之下巖芯采取率較高,巖芯完整,致密堅(jiān)硬, 有少量裂隙也多被方解石充填。漏水鉆孔占施工鉆孔總數(shù)的 30%。 煤層的面積為 km2,煤層傾角為 15 度。 立井的優(yōu)點(diǎn)有: ( 1)立井的井筒短,提升速度快,對(duì)輔助提升有利; ( 2)機(jī)械化程度高,易于自動(dòng)控制,便于實(shí)現(xiàn)機(jī)械化和自動(dòng)化; ( 3)維護(hù)費(fèi)用低,有效斷面打,通風(fēng)良好。 2)開采順序 開采順序?yàn)椴蓞^(qū)前進(jìn)式,采區(qū)內(nèi)工 作面采用后退式。19′360035002021R311417001200 11006