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机械制冷在煤矿井下热害防治中的应用.rar

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    机械 制冷 煤矿 井下 热害 防治 中的 应用
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    中 国 矿 业 大 学本 科 生 毕 业 设 计姓 名: 李 珠 峰 学 号: 01080240 学 院: 矿 业 工 程 学 院 专 业: 采 矿 工 程 专 业 设计题目: 涡北煤矿 1.8 Mt/a 新井设计 专 题: 机械制冷在煤矿井下热害防治中的应用 指导教师: 张 农 职 称: 教 授 2012 年 6 月 徐州中国矿业大学毕业设计任务书学院 矿业工程学院 专业年级 采矿工程专业 2008 级 学生姓名 李珠峰 任 务 下 达 日 期 : 年 月 日毕业设计日期: 年 月 日至 年 月 日毕业设计题目:涡北煤矿 1.8 Mt/a 新井设计毕业设计专题题目:机械制冷在煤矿井下热害防防治中的应用毕业设计主要内容和要求:院长签字: 指导教师签字:中国矿业大学毕业设计指导教师评阅书指导教师评语(①基础理论及基本技能的掌握;②独立解决实际问题的能力;③研究内容的理论依据和技术方法;④取得的主要成果及创新点;⑤工作态度及工作量;⑥总体评价及建议成绩;⑦存在问题;⑧是否同意答辩等):成 绩: 指导教师签字:年 月 日中国矿业大学毕业设计评阅教师评阅书评阅教师评语(①选题的意义;②基础理论及基本技能的掌握;③综合运用所学知识解决实际问题的能力;③工作量的大小;④取得的主要成果及创新点;⑤写作的规范程度;⑥总体评价及建议成绩;⑦存在问题;⑧是否同意答辩等):成 绩: 评阅教师签字:年 月 日中国矿业大学毕业设计答辩及综合成绩答 辩 情 况回 答 问 题提 出 问 题 正 确基 本正 确有 一般 性错 误有 原则 性错 误没 有回 答答辩委员会评语及建议成绩:答辩委员会主任签字: 年 月 日学院领导小组综合评定成绩:学院领导小组负责人: 年 月 日摘 要本设计包括三个部分:一般部分、专题部分和翻译部分。一般部分为涡北煤矿 1.80 Mt/a 新井设计。涡北煤矿位于安徽省亳州市境内,东有京九铁路,西有濉阜铁路,交通便利。井田走向长度约 6 km,倾向长度约 3.2 km,面积约15km2。主采煤层为 8 号煤层,平均倾角为 23°,平均厚度为 10.1 m。井田工业储量为212.6 Mt,可采储量为 127.6 Mt,矿井服务年限为 54.5 a。矿井正常涌水量为 250 m3/h,最大涌水量为 280 m3/h。矿井绝对瓦斯涌出量为 21.33 m3/min,属于低瓦斯矿井。根据井田地质条件,提出四个技术上可行的开拓方案。方案一:立井两水平开拓上下山开采,一对立井直接延深;方案二:立井两水平开拓上下山开采,一对暗斜井延深;方案三:立井两水平开拓上下山开采,两对暗斜井延深;方案四:立井两水平开拓上下山开采,一对立井、一对暗斜井延深。通过技术经济比较,最终确定方案四为最优方案。一水平标高-700 m,二水平标高-1000m。设计首采区采用采区准备方式,工作面长度 210 m,采用综采放顶煤采煤法,矿井年工作日为 330 d,工作制度为“三八制” 。大巷采用胶带输送机运煤,辅助运输采用矿车运输。矿井通风方式前期为中央并列式,后期为两翼对角式。专题部分题目是浅谈机械制冷在煤矿热害防治中的应用,主要从矿井产生高温的原因,矿井地温的分布规律以及机械预冷风降温和冰输降温两种机械降温的系统,并通过实例来说明了机械降温系统在煤矿热害治理中的应用以及它的广阔前景和研究必要性。翻译部分题目是关于地下开采中断层附近地下水突出的数值研究。关键词:涡北煤矿;立井;暗斜井;采区布置;放顶煤采煤法;两翼对角式;机械制冷;煤矿热害ABSTRACTThis design can be divided into three sections: general design, monographic study and translation of an academic paper.The general design is about a 1.80 Mt/a new underground mine design of Gobei coal mine.Wobei coal mine lies in Bozhou City, Anhui province.As Jingjiu railway runs in the west of the mine field and Suifu railway runs in the east of the mine field, the traffic is convenient.It’s about 6 km on the strike and 3.2 km on the dip, with the 14.85 km2 total horizontal area.The minable coal seam is 8 with an average thickness of 10.1 m and an average dip of 23°.The proved reserves of this coal mine are 212.6 Mt and the minable reserves are 127.6 Mt, with a mine life of 54.5 a. The normal mine inflow is 250 m3/h and the maximum mine inflow is 280 m3/h. The mine gas emission rate is 21.33 m3/min which belongs to low gas mine. Based on the geological conditions of the mine, I bring forward four available projects in technology.The first is vertical shaft development with two mining levels and the extension of blind inclined shaft; the second is vertical shaft development with two mining levels and the extension of vertical shaft; the third is vertical shaft development with three mining levels and the extension of blind inclined shaft; the last is vertical shaft development with three mining levels and the extension of vertical shaft. The first project is the best comparing with other three projects in technology and economy.The first level is at -700 m.The second level is at -1000 m.Designed first mining district makes use of the method of the mining district preparation.The length of working face is 210 m, which uses fully-mechanized coal caving mining method. The working system is “three-eight” which produces 330 d/a.Main roadway makes use of belt conveyor to transport coal resource, and mine car to be assistant transport. The type of mine ventilation system is two wings diagonal ventilation.The monographic study is the topic of mechanical refrigeration in the coal thermal damage control , the reasons of high temperature from the mine , mine ground temperature distribution law , cold and mechanical pre- cooling and ice lost cooling both mechanical cooling system , and examples illustrates the application of the mechanical cooling system in the governance of coal heat damage as well as its broad prospects and research necessity .The translated academic paper is Finite element analysis of three-way roadway junctions in longwall mining.Keywords: Guobei coal; vertical shaft; blind inclined shaft; mining district preparation; coal caving mining ; two wings diagonal ventilation; gob-side entry ;mechanical refrigeration; coal thermal damage中国矿业大学 2012 届本科生毕业设计 第 页目 录1 矿区概述及井田地质特征 .........................................................................................................11.1 矿区概述 ...........................................................................................................................11.2 井田地质特征 ...................................................................................................................21.3 煤层特征 ...........................................................................................................................72 井田境界和储量 .......................................................................................................................132.1 井田境界 .........................................................................................................................132.2 矿井工业储量 .................................................................................................................132.3 矿井可采储量 .................................................................................................................163 矿井工作制度、设计生产能力及服务年限 ...........................................................................193.1 矿井工作制度 .................................................................................................................193.2 矿井设计生产能力及服务年限 .....................................................................................194 井田开拓 ...................................................................................................................................214.1 井田开拓的基本问题 .....................................................................................................214.2 矿井基本巷道 .................................................................................................................325 准备方式— 采区巷道布置 .......................................................................................................435.1 煤层地质特征 .................................................................................................................435.2 采区巷道布置及生产系统 .............................................................................................445.3 采区车场选型设计 .........................................................................................................496 采煤方法 ...................................................................................................................................506.1 采煤工艺方式 .................................................................................................................506.2 回采巷道布置 .................................................................................................................597 井下运输 ...................................................................................................................................627.1 概述 .................................................................................................................................627.2 采区运输设备选择 .........................................................................................................647.3 大巷运输设备选择 .........................................................................................................658 矿井提升 ...................................................................................................................................678.1 概述 .................................................................................................................................678.2 主副井提升 .....................................................................................................................679 矿井通风及安全 .......................................................................................................................70中国矿业大学 2012 届本科生毕业设计 第 I 页9.1 矿井地质、开拓、开采概况 .........................................................................................719.2 矿井通风系统的确定 .....................................................................................................719.3 矿井风量计算 .................................................................................................................749.4 矿井通风阻力 .................................................................................................................789.5 矿井通风设备选型 .........................................................................................................849.6 特殊灾害的预防措施 .....................................................................................................8910 设计矿井基本技术经济指标 .................................................................................................90参考文献 .......................................................................................................................................91专题部分 机械制冷在煤矿热害防治中的应用 .......................................................................921 问题的提出 ...............................................................................................................................921.1 背景 .................................................................................................................................921.2 热害防治研究意义 .........................................................................................................921.3 国内外发展状况 .............................................................................................................942 矿井中高温高湿产生的原因 ...................................................................................................952.1 矿井中高温产生的原因 .................................................................................................952.2 矿井中高湿产生的原因 .................................................................................................952.3 矿井地温分布规律 .........................................................................................................962.4 导热偏微分方程建立 .....................................................................................................973 机械制冷降温 ...........................................................................................................................973.1 空调系统的分类 .............................................................................................................983.2 机械预冷风降温 ...........................................................................................................1013.3 冰冷却矿井空调系统 ...................................................................................................1044 孙村矿机械制冷实例 .............................................................................................................1114.1 矿井风流热力参数的测定 ...........................................................................................1114.2 矿井热源分析 ...............................................................................................................1114.3 矿井高温的危害 ...........................................................................................................1114.4 降温方式 .......................................................................................................................1115 结论 .........................................................................................................................................114参考文献: ....................................................................................................................................115翻译原文 .....................................................................................................................................116Numerical investigation of groundwater outbursts near faults in underground coal mines........1161. Introduction .............................................................................................................................117中国矿业大学 2012 届本科生毕业设计 第 II 页2. Brief introduction to the numerical method ............................................................................1183. Problem description.................................................................................................................1214. Model setup and numerical simulation....................................................................................1224.1. Numerical model ..........................................................................................................1224.2. Strength reduction rule of element and determination of safety factor ........................1244.3. Numerical simulation of groundwater outburst process...............................................1244.4. A case study from Fengying Coal Mine.......................................................................1285. Conclusions .............................................................................................................................131翻译 关于地下开采中断层附近突水的数值研究 ...............................................................1331 简介 ..........................................................................................................................................1332 数值思路的简介 .....................................................................................................................1343 问题的描述 .............................................................................................................................1364.模型的建立和数值模拟 ..........................................................................................................1114.1 数值模型 ......................................................................................................................1444.2 岩块强度减少的规则和安全系数的测定 ...................................................................1384.3 地下水突出过程的数值模拟 ......................................................................................1384.4 从冯营煤矿的个案研究 ..............................................................................................141致 谢 ...........................................................................................................................................145
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