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锚网支护沿空掘巷矿压显现规律.rar

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    支护 沿空掘巷矿压 显现 规律
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    摘 要 本设计包括三个部分:一般部分、专题部分和翻译部分。 一般部分 针对 潞安司马矿井 进行了 井 型为 1.8Mt/a 的 新井设计。 司马 矿井 位于 山西省长治县 境内 , 井田 走向 长约 4.00km, 倾向 长约 4.69km,面积 约 18.80km2。主采煤层 为 3#煤层,平均倾角 3.8° , 平均 厚 度 7.62m。井田工业储量为 197.62Mt,可采储量 133.55Mt,矿井服务年限为 57.07a。矿井正常涌水量为 220m3/h,最大涌水量为 300m3/h;矿井 相对 瓦斯涌出量为 0.67m3/t,属 低 瓦斯矿井 。 矿井煤层没有自燃倾向性,但煤尘有爆炸危险性。 根据井田地质条件, 设计采用 立井单水平开拓方式,井田采用 带区 和盘区 布置方式,共划分为 四 个带区, 三 个盘区, 轨道大巷、胶带机大 巷 和回风大巷皆为 煤层 大巷, 布置在3 号 煤层 。 矿井通风方式 采用 中央并列式通风。 针对东七 带区 采用 了 带 区准备方式, 共划分 10 个分带工作面,并进行了 运煤、通风、运料、排矸、供电系统设计。 针对 3703 工作面进行了采煤工艺设计。该工作面煤层平 均厚度为 7.62m,平均倾角3.8°,直接顶为 炭质 泥岩,老顶为 粉 砂岩。 采煤 方 法 为综合机械化放顶煤开采 。 矿井年工作日为 330 d, 日净提升时间 16h, 采用“ 四六 制”工作制度,截深 0.6m,每天六个循环,循环进尺 3.6m,月推进度 108m。 大巷采用胶带输送机运煤, 辅助运输采用架线式电机车牵引 1.5t 固定箱式矿车运输 。 专题部分题目 为 《 锚网支护沿空掘巷矿压显现规律 》 ,阐述了沿空 掘进 巷道上覆岩层结构、围岩应力分布、围岩变形的一般规律。并通过现场实测数据的整理分析,总结了类似条件下巷道的矿压显现 规律,以指导沿空巷道的支护设计。 翻译部分 是一篇建筑物下似膏体充填开采新工艺的探讨性 论文,英文题目为 A New Mode of Coal Mining Under Buildings with Paste-Like Backfill Technology。 关键词 : 立井 开拓 ; 带区布置; 放顶煤采煤法 ; 中央并列式通风 ; 架线电机车运输 ;似膏体充填 ABSTRACT This design includes three parts: the general part, special subject part and translation part. The general design is about a 1.80 Mt/a new underground mine design of Sima coal mine. Sima coal mine is located in Changzhi, shanxi province. It’s about 4.0 km on the strike and 4.69 km on the dip, with the 18.80 km2 total horizontal area. The minable coal seam is 3# with an average thickness of 7.62 m and an average dip of 3.8°. The proved reserves of this coal mine are 197.62 Mt and the minable reserves are 133.55 Mt, with a mine life of 57.07 a. The normal mine inflow is 220 m3/h and the maximum mine inflow is 300 m3/h. The mine gas emission rate is 0.67 m3/t which can be recognized as low gas mine. And it’s have no spontaneous combustion tendency, and it’s a coal seam liable to explosion. Based on the geological condition of the mine, this design uses vertical shaft single-level development method, and strip and districts preparation ,which divided into four bands and three districts, and track roadway, belt conveyor roadway and return airway are all coal roadways, arranged in the 3# coal seam. The ventilation type is centralized juxtapose ventilation; The design applies strip preparation against the first band of East Seven which divided into 10 stirps totally, and conducted coal conveyance, ventilation, gangue conveyance and electricity designing. The design conducted coal mining technology design against the 3703 face. The coal seam average thickness of this working face is 7.62 m and the average dip is 3.8°, the immediate roof is mud stone and the main roof is sand stone. Comprehensive mechanization puts in the top coal technology is the mining method. The working days in a year are 300. Everyday it takes 18 hours in lifting the coal. The working system in the mine is ―four-six‖and the depth-web is 0.6 m with six working cycles per day, and the advance of a working cycle is 3.6 m and the advance is 108 m per month. Main roadway makes use of belt conveyor to transport coal resource, the xiliary haulage uses the wire laying type electric locomotive to tow the 1.5t fixed box-type mine car transportation. The monographic study is a brief analysis of behavior law of mine pressure of gob-side entry bolting with wire mesh.This paper has discussed the overlying strata structure of gob-side entry and the law of both surrounding rock stress distribution and surrounding rock deformation.By finishing and analysising the data from worksite, summarized the behavior law of mine pressure of gob-side entry with similar geological conditions to direct the support design for gob-side entry. The translated part is under a building resembles the paste body backfill to mine the new craft the discussion paper, English topic is A New Mode of Coal Mining Under Buildings with Paste-Like Backfill Technology. Keywords:vertical development; strip district; coal caving mining; centralized juxtapose ventilation; overhead line electric locomotive transport; paste-like backfill中国矿业大学 2012 届本科生毕业设计 第 I 页 目 录 一般 设计 部分 1 矿区概述及井田地质特征 ..................................................... 1 1.1 矿区概述 ................................................................. 1 1.1.1 交通位置 ............................................................................................................................. 1 1.1.2 地形、地貌 ......................................................................................................................... 1 1.1.3 河流及水体 ......................................................................................................................... 1 1.1.4 气象地震 ............................................................................................................................. 1 1.1.5 矿区经济概况 ..................................................................................................................... 1 1.1.6 水源及电源 ......................................................................................................................... 1 1.2 井田地质特征 ............................................................. 2 1.2.1 井田地质构造 ..................................................................................................................... 2 1.2.2 地层 ..................................................................................................................................... 3 1.2.3 水文地质 ............................................................................................................................. 4 1.2.4 地质勘探程度 ..................................................................................................................... 6 1.3 煤层特征 ................................................................. 8 1.3.1 煤层 ..................................................................................................................................... 8 1.3.2 煤层顶底板 ......................................................................................................................... 8 1.3.3 煤质 ..................................................................................................................................... 9 1.3.4 瓦斯 ................................................................................................................................... 11 1.3.5 煤尘 ................................................................................................................................... 12 1.3.6 煤的自燃 ........................................................................................................................... 12 1.3.7 地温 ................................................................................................................................... 12 2 井田境界和储量 ............................................................ 13 2.1 井田境界 ................................................................ 13 2.1.1 井田范围 ........................................................................................................................... 13 2.1.2 开采界限 ........................................................................................................................... 13 2.1.3 井田尺寸 ........................................................................................................................... 13 2.2 矿井储量 ................................................................ 13 2.2.1 储量计算基础 ................................................................................................................... 13 2.2.2 安全煤柱留设原则 ........................................................................................................... 13 2.2.3 矿井 地质储量 ................................................................................................................... 14 2.2.4 矿井工业储量计算 ........................................................................................................... 16 2.2.5 矿井设计储量 ................................................................................................................... 16 2.2.6 矿井设计可采储量 ........................................................................................................... 16 3 矿井工作制度、设计生产能力及服务年限 ...................................... 19 3.1 矿井工作制度 ............................................................ 19 中国矿业大学 2012 届本科生毕业设计 第 II 页 3.2 矿井设计生产能力及服务年限 .............................................. 19 3.2.1 确定依据 ........................................................................................................................... 19 3.2.2 矿井设计生产能力 ........................................................................................................... 19 3.2.3 矿井服务年限 ................................................................................................................... 19 3.2.4 井型校核 ........................................................................................................................... 20 4 井田开拓 ................................................................. 21 4.1 井田开拓的基本问题 ...................................................... 21 4.1.1 确定井筒形式、数目、位置及坐标 ............................................................................... 21 4.1.2 工业场地的位置 ............................................................................................................... 22 4.1.3 开采水平的确定及采盘区划分 ....................................................................................... 22 4.1.4 主要开拓巷道 ................................................................................................................... 22 4.1.5 方案比较 ........................................................................................................................... 23 4.2 矿井基本巷道 ............................................................ 28 4.2.1 井筒 ................................................................................................................................... 28 4.2.2 井底车场及硐室 ............................................................................................................... 31 4.2.3 主要开拓巷道 ................................................................................................................... 33 5 准备方式 —— 带区巷道布置 .................................................. 38 5.1 煤层地质特征 ............................................................ 38 5.1.1 带区位置 ........................................................................................................................... 38 5.1.2 带区煤层特征 ................................................................................................................... 38 5.1.3 煤层顶底板岩石构造情况 ............................................................................................... 38 5.1.4 水文地质 ........................................................................................................................... 38 5.1.5 地质构造 ........................................................................................................................... 38 5.2 带区巷道布置及生产系统 .................................................. 38 5.2.1 带区准备方式的确定 ....................................................................................................... 38 5.2.2 带区巷道布置 ................................................................................................................... 39 5.2.3 带区生产系统 ................................................................................................................... 39 5.2.4 带区内巷道掘进方法 ....................................................................................................... 41 5.2.5 带区生产能力及采出率 ................................................................................................... 42 5.3 带区车场选型设计 ........................................................ 43 6 采煤方法 ................................................................. 44 6.1 采煤工艺方式 ............................................................ 44 6.1.1 带区煤层特征及地质条件 ............................................................................................... 44 6.1.2 确定采煤工艺方式 ........................................................................................................... 44 6.1.3 回采工作面参数 ............................................................................................................... 45 6.1.4 综采工作面的设备选型及配套 ....................................................................................... 45 6.1.5 回采工作面破煤、装煤方式 ........................................................................................... 49 6.1.6 回采工作面支护方式 ....................................................................................................... 50 6.1.7 端头支护及超前支护方式 ............................................................................................... 52 中国矿业大学 2012 届本科生毕业设计 第 III 页 6.1.8 各工艺过程注意事项 ....................................................................................................... 53 6.1.9 回采工作面正规循环作业 ............................................................................................... 54 6.2 回采巷道布置 ............................................................ 57 6.2.1 回采巷道布置方式 ........................................................................................................... 57 6.2.2 回采巷道参数 ................................................................................................................... 58 7 井下运输 ................................................................. 61 7.1 概述 .................................................................... 61 7.1.1 矿井设计生产能力及工作制度 ....................................................................................... 61 7.1.2 煤层及煤质 ....................................................................................................................... 61 7.1.3 矿井运输系统 ................................................................................................................... 61 7.2 带区运输设备选择 ........................................................ 62 7.2.1 设备选型原则 ................................................................................................................... 62 7.2.2 带区运输设备选型及能力验算 ....................................................................................... 62 7.3 大巷运输设备选择 ........................................................ 64 7.3.1 胶带运输大巷设备选择 ................................................................................................... 64 7.3.2 辅助运输大巷设备选择 ................................................................................................... 64 7.3.3 运输设备能力验算 ........................................................................................................... 66 8 矿井提升 ................................................................. 67 8.1 矿井提升概述 ............................................................ 67 8.2 主副井提升 .............................................................. 6
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