神府海湾二矿开采设计.doc
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- 海湾 开采 设计
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1、摘 要本次设计开采的神府海湾一矿隶属神府经济开发区海湾煤矿有限公司,位于陕西省榆林市神木县北部,行政区划隶属神木县孙家岔所辖。本井田位于神木北部矿区中南部,其开采范围南部和北部于海湾煤矿范围边界一致,东北部大致以2煤层自燃边界为界,东西倾斜宽19233831m,南北走向长16803724m,面积约11,23km2。矿区地层总体为倾角1左右的单斜构造,地质条件简单,水文地质条件简单,正常涌水量60m3/h,最大涌水量120m3/h。设计开采1和2煤层,1煤层倾角1.2,2煤层倾角1.3,层间距平均5m。1煤平均煤厚3.0m,全部可采;2煤层平均煤厚2.8m,全部可采。本矿井采用斜井开拓,单水平多
2、盘区式集中大巷联合布置,设置主、副斜井,回风斜井三条井筒。在两层煤中只在2煤层设置开采水平。水平标高为+1123m。在1煤层设置辅助运输大巷和回风大巷,在2煤层设置主运输大巷。两煤层通过回风斜眼,运料斜眼相联系。两煤层均采用长壁综采采煤法。本矿井属低瓦斯矿井,通风系统采用中央分裂式通风方式,抽出式通风方法。关键词:斜井开拓 联合开采 长壁综采 低瓦斯 中央分裂式 抽出式AbstractThis design mining in shenfu economic development zone, a mine under the shenfu Haiwan coal mine, located
3、in Northern Shenmu in Yulin city of Shanxi Province, administrative region under the Shenmu County Suns bifurcated jurisdiction. Coal field in Northern Shenmu mining area in the South, its exploitation scope range boundary line South and North from the Gulf coal mine,North-east roughly bounded by bo
4、rders of 2 coal spontaneous combustion,1923 3831m wide tilt things,North-south length of1680 3724m,Area of 11,23 km2. Mine is about the whole strata dip of 1 mono clinic structure,Simple geological conditions,Simple hydrogeological conditions,Normal water inflow 60m3/h,The maximum water inflow 120m3
5、/h.Design1 and 2 coal mining.First seam inclination 1.2,second seam inclination 1.3.The average interlayer spacing 5m.The average thickness of first coal is 3.0m,And the second coal is 2.8m,All recoverable.The mine uses inclined to explore,Single-level multi-panel style centralized roadway joint arr
6、angement,Set the primary and second ary inclined,Return Slope three wellbore.In only two coal seams in two mining levels set,+1123 M elevation level.Set in an auxiliary transport coal road way and return air road way,Set in two main coal haulage roadway.Two seams through the return air askance,Askan
7、ce linked haul.Two seams are made of fully mechanized long wall coal mining law.The mine is a low gas mine,Ventilation system uses a central split ventilation,Exhaust ventilation methods.Key words: Inclined to develop、 joint mining 、Long wall、 low gas 、central split withdrawable前 言本矿井设计是以神府经济开发区海湾煤矿
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