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浅埋煤层长壁开采顶板结构稳定性分析.rar

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    煤层 开采 顶板 结构 稳定性 分析
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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。一般部分为开元煤矿 4.0 Mt/a 新井设计,共分 10 章:1.矿区概述及井田地质特征;2.井田境界和储量;3.矿井工作制度、设计生产能力及服务年限;4.井田开拓;5.准备方式—采区巷道布置;6.采煤方法;7.井下运输;8.矿井提升;9.矿井通风与安全技术;10.矿井基本技术经济指标。开元煤矿位于山西省晋中市境内,井田南部有石太铁路和太旧高速公路,交通十分便利。井田走向(东西)长平均约 5 km,倾向(南北)长平均约 5.5 km,井田水平面积为 27.5 km2。主采煤层三层,即 3 号、9 号和 15 号煤层,平均倾角 7.5°,厚约3.03m、4.26 m 和 3.98m。井田地质资源/储量为 478.88 Mt,工业资源/ 储量为 456.80 Mt,设计资源/储量为 455.65 Mt,可采资源/储量 445.56 Mt,矿井服务年限为 72.72 a。井田地质条件简单。表土层平均厚度 40 m;矿井正常涌水量为 140 m3/h,最大涌水量为 220 m3/h;煤层硬度系数 f=2.3,煤质为瘦煤、贫煤;矿井相对瓦斯涌出量为 6.69 m3/t,绝对瓦斯涌出量为 56 m3/min,为高瓦斯矿井,无自燃发火倾向,为Ⅲ不易自燃煤层;煤层无爆炸危险。矿井采用双立井单水平开拓,采用中央分列式通风。一矿两面,采煤方法为倾斜走向长壁采煤法。煤炭运输采用钢丝绳芯胶带,辅助运输采用无轨胶轮车运输。矿井年工作日为 330 d,每天净提升时间 16 h。矿井工作制度为:实行“三八”制。专题部分题目是新元矿瓦斯抽放分析。翻译部分是一篇关于矿井巷道维护的论文,英文原文题目为:Method of branch ariflow for calculatinga complicated mine ventilation networks。关键词:片盘开拓;采区;倾斜长壁采煤法;大采高;ABSTRACTThis design can be divided into three sections: general design, monographic study and translation of an academic paper.The general design is about a 4.0 Mt/a new underground mine design of kaiyuan coal mine. It contains ten chapters: 1.overview and the geographical features of the mining field; 2.boundary and reserves of the mining field; 3.working system, designed mine capacity and mine life; 4.development of mining field; 5.preparation in strip district; 6.coal mining method; 7.underground conveying; 8.mine exaltation; 9.mine ventilation and safety technology; 10.the basic technical and economic index.Kaiyuan coal mine lies in Yangquan, Shangdong province. As shitai railway and taijiu highway run across the southern part of the mining field, the traffic is very convenient. It’s about 5 km on the strike and 5.5 km on the dip,with the 27.5 km2 total horizontal area. The minable coal seams of this mine are 3 and 9 and 15 with the average thickness of 3.03 m and 4.26 m and 3.98 m , the average dip of 7.5°. The geological resources/reserves of this coal mine are 478.88 Mt, the proved resources/reserves are 456.80 Mt , the designed resources/reserves are 455.65 Mt and the minable resources/reserves are 445.56 Mt, with a mine life of 72.72 years.The geological condition of the mine is relatively simple. The normal mine inflow is 140 m3/h and the maximum mine inflow is 220 m3/h. It is lean coal with low mine gas emission rate and coal spontaneous combustion tendency, and it’s a coal that has no dust explosion.This mine adopts vertical shaft development with one mining level and centralized ventilation. The adopted coal winning method is longwall mining to the dip or to the rise. The belt conveyor is applied to transport coal and track transport, is used in the auxiliary conveying. The workers work 330 days per year ,and exaltate 16 hours one day .The “three-eight” working system is applied for coal mining . The monographic study is Analysis on Roof Structure’s Stability of Longwall Mining in Shallow Seam.The translated academic paper is about Reinforcing Coal Mine Roof with olyurethane. Its title is that Reinforcing Coal Mine Roof with olyurethane Keywords:Coal mining Ground control Roof falls Roof support Polyurethane目 录摘 要 ..........................................................................................................................................................1ABSTRACT.....................................................................................................................................................2一般部分1 井田概况及地质特征 ................................................................................................................................21.1 井田概况 ....................................................................................................................................................21.1.1 交通位置 ...........................................................................................................................................21.1.2 地形地貌 ...........................................................................................................................................31.1.3 气象 ...................................................................................................................................................31.1.4 地震 ...................................................................................................................................................31.1.5 电源条件 ...........................................................................................................................................31.1.6 水文情况 ...........................................................................................................................................31.1.7 水源条件 ...........................................................................................................................................31.1.8 矿区工农业生产概况 ........................................................................................................................31.2 地质特征 ...................................................................................................................................................41.2.1 地层 ....................................................................................................................................................41.2.2 地质构造 ...........................................................................................................................................61.2.3 水文地质 ...........................................................................................................................................91.3 煤层特征 .................................................................................................................................................101.3.1 各可采煤层分述如下: ..................................................................................................................101.3.2 煤质 .................................................................................................................................................111.3.3 瓦斯、煤尘及煤自燃和地温 ..........................................................................................................112 井田境界和储量 .....................................................................................................................................132.1 井田境界 .................................................................................................................................................132.2 井田勘探 .................................................................................................................................................142.2.1 井田勘探工作 ..................................................................................................................................142.2.2 钻孔测量工作 ..................................................................................................................................152.3 矿井各类储量的计算 ..............................................................................................................................172.3.1 矿井地质资源储量的计算 ..............................................................................................................172.3.2 矿井的工业资源 /储量计算 .............................................................................................................202.3.3 矿井设计资源 /储量 .........................................................................................................................212.3.4 煤层矿井设计可采资源 /储量 .........................................................................................................223 矿井工作制度、设计生产能力及服务年限 ............................................................................................253.1 矿井工作制度 ..........................................................................................................................................253.2 矿井设计能力及服务年限 ......................................................................................................................253.2.1 确定依据 ..........................................................................................................................................253.2.2 确定矿井设计生产能力 ..................................................................................................................253.2.3 矿井服务年限 ..................................................................................................................................263.2.4 井型校核 .........................................................................................................................................274 井田开拓 ................................................................................................................................................284.1 井田开拓的基本问题 ..............................................................................................................................284.1.1 确定井筒形式、数目、位置及坐标 ..............................................................................................284.1.2 工业场地的位置 .............................................................................................................................294.1.3 开采水平的确定及采区的划分 ......................................................................................................294.1.4 矿井开拓延伸方案及阶段划分 .......................................................................................................304.2 矿井基本巷道 ..........................................................................................................................................414.2.1 井筒 ..................................................................................................................................................414.2.2 井底车场及硐室 ..............................................................................................................................414.2.3 主要开拓巷道 ..................................................................................................................................425 准备方式— —采区巷道布置 ...................................................................................................................485.1 煤层地质特征 ..........................................................................................................................................485.1.1 采区位置 ..........................................................................................................................................485.1.2 采区煤层特征 .................................................................................................................................485.1.3 地质构造 .........................................................................................................................................485.1.4 顶底板特性 .....................................................................................................................................485.1.5 水文地质 .........................................................................................................................................485.2 采区巷道布置及生产系统 ......................................................................................................................495.2.1 采区走向长度的确定 ......................................................................................................................495.2.2 确定区段斜长和区段数目 ..............................................................................................................495.2.3 煤柱尺寸的确定 .............................................................................................................................495.2.4 采区上、下山布置 .........................................................................................................................505.2.5 区段平巷的布置 .............................................................................................................................505.2.6 采区内工作面的接替顺序 ..............................................................................................................505.2.7 采区通风、运输及其它系统 ..........................................................................................................505.2.8 采区内各种巷道的掘进方法 ..........................................................................................................525.2.9 采区生产能力 .................................................................................................................................555.2.10 采区采出率 ...................................................................................................................................565.3 采区车场及主要硐室 ..............................................................................................................................575.3.1 采区下部车场设计 ..........................................................................................................................575.3.2 采区主要硐室 ..................................................................................................................................586 采煤方法 ................................................................................................................................................596.1 采煤工艺方式 ..........................................................................................................................................596.1.1 采区煤层特征及地质条件 ...............................................................................................................596.1.2 确定采煤工艺方式 ..........................................................................................................................596.1.3 回采工作面长度的确定 ...................................................................................................................596.1.4 回采工作面的推进方向和推进度 ...................................................................................................606.1.5 回采工作面破煤、装煤方式 ...........................................................................................................606.1.6 回采工作面支护方式 .......................................................................................................................626.1.7 端头支护及超前支护方式 ...............................................................................................................636.1.8 各工艺过程注意事项 .......................................................................................................................656.1.9 回采工作面正规循环作业 ...............................................................................................................656.2 回采巷道布置 ..........................................................................................................................................676.2.1 回采巷道布置方式 ..........................................................................................................................676.2.2 回采巷道支护参数 ..........................................................................................................................687 井下运输 ................................................................................................................................................707.1 概述 ........................................................
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