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    编 号 :( )字 号本 科 生 毕 业 设 计姓 名: 张 志 义 学 号: 01070029 学 院: 矿 业 工 程 学 院 专 业: 采 矿 工 程 专 业 设计题目: 涡北煤矿 1.5 Mt/a 新井设计 专 题: 浅析深井沿空留巷支护理论与技术 指导教师: 张 农 职 称: 教 授 二〇一一年六月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 2007 级 学生姓名 张志义 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 1.5 Mt/a 新井设计毕业设计专题题目:浅析深井沿空留巷支护理论与技术毕业设计主要内容和要求:本设计包括三个部分:一般部分、专题部分和翻译部分。一般部分题目为涡北煤矿 1.50 Mt/a 新井设计。井田走向长度约 6 km,倾向长度约 3.2 km,面积约 19 km2。主采煤层为 8 号煤层,平均倾角为 18°,平均厚度为 9.0 m。井田工业储量为 191.87 Mt,可采储量为 111.03 Mt,矿井服务年限为 56.9 a。根据井田地质条件,提出四个技术上可行的开拓方案。通过技术经济比较,最终确定方案三为最优方案。一水平标高-650 m,二水平标高 -1000 m。设计首采区采用采区准备方式,工作面长度 200 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。矿井通风方式为中央并列式。专题部分题目:浅析深井沿空留巷支护理论与技术。深井沿空留巷是提高采出率、煤层群卸压开采,进而实施煤与瓦斯共采的关键技术。要经历两次工作面采动影响,加之深部巷道围岩变形具有高地压、大变形和长期蠕变的特点,巷道维护较浅部沿空留巷更加困难。本文以淮南顾桥煤矿深井沿空留巷为工程背景,运用 FLAC3D 数值模拟和现场实测相结合的手段对工程实践中经常遇到的厚直接顶、薄直接顶和无直接顶三种沿空留巷类型进行研究,提出相应的支护方案。翻译部分题目:Numerical simulation of rock burst in circular tunnels under unloading conditions。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及工作量的大小;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 1.50 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19 km2。主采煤层为 8 号煤层,平均倾角为 18°,平均厚度为 9.0 m。井田工业储量为191.87 Mt,可采储量为 111.03 Mt,矿井服务年限为 56.9 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,暗斜井延深;方案二:立井两水平开拓上下山开采,立井直接延深;方案三:立井两水平开拓上山开采,暗斜井延深;方案四:立井两水平开拓上山开采,新混合井延深。通过技术经济比较,最终确定方案三为最优方案。一水平标高-650 m,二水平标高-1000 m。设计首采区采用采区准备方式,工作面长度 200 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。矿井通风方式为中央并列式。专题部分题目:浅析深井沿空留巷支护理论与技术。深井沿空留巷是提高采出率、煤层群卸压开采,进而实施煤与瓦斯共采的关键技术。要经历两次工作面采动影响,加之深部巷道围岩变形具有高地压、大变形和长期蠕变的特点,巷道维护较浅部沿空留巷更加困难。本文以淮南顾桥煤矿深井沿空留巷为工程背景,运用 FLAC3D 数值模拟和现场实测相结合的手段对工程实践中经常遇到的厚直接顶、薄直接顶和无直接顶三种沿空留巷类型进行研究,提出相应的支护方案。翻译部分题目:Numerical simulation of rock burst in circular tunnels under unloading conditions。圆形隧道在卸压过程中发生岩爆的数值模拟。关键词: 立井; 暗斜井; 采区布置; 放顶煤采煤法; 中央并列式; 沿空留巷ABSTRACTThis design can be divided into three sections: general design, monographic study and translation of an academic paper.The general design is about a 1.50 Mt/a new underground mine design of Wobei coal mine.Wobei coal mine lies in Hozhou 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 19 km2 total horizontal area.The minable coal seam is 8 with an average thickness of 9.0 m and an average dip of 18°.The proved reserves of this coal mine are 191.87 Mt and the minable reserves are 111.03 Mt, with a mine life of 56.9 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, the mine 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 first level at -650m and the second level at -850m and extension of blind inclined shaft; the second is vertical shaft development with two mining levels and the first level at -650m and the second level at -850m and extension of vertical shaft; the third is vertical shaft development with two mining levels and the first level at -650m and the second level at -1000m and extension of blind inclined shaft; the last is vertical shaft development with two mining levels and the first level at -650m and the second level at -1000m and extension of new vertical shaft. The third project is the best comparing with other three projects in technology and economy.The first level is at -650 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 200 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 center ventilation.The monographic study is a brief analysis of law and tecenolgy of rodway supporting of gob-side entry rataining.Gob-side entry rataining is the key technology of unlonding stress and coal and gas mining at the same time. Because of twice mining influence, high press and large deformation and long-term creep of the deep roadway, it’s more difficult to roadway maintenance.The paper is based on the deep gob-side entry retaining of Guqiao coalmine in Huaibei mining area. And it researches on the laws of stress evolution and failure mechanism of roadway with thick roof and thin roof and no roof by using numerical simulation and applying field test, and proposes corresponding support scheme.The translated academic paper is Numerical simulation of rock burst in circular tunnels under unloading conditions.Keywords: Vertical shaft; Blind inclined shaft; Mining district preparation; Coal caving mining ; Center ventilation; Gob-side entry rataining中国矿业大学 2011 届本科生毕业设计 第 I 页目 录一 般 部 分1 矿区概述及井田地质特征 .........................................................................................................11.1 矿区概述 ...............................................................................................................................11.1.1 地理位置与交通 ............................................................................................................11.1.2 地形地貌 ........................................................................................................................11.1.3 河流及水体 ....................................................................................................................11.1.4 气候 ................................................................................................................................21.1.5 自然地震 ........................................................................................................................21.1.6 矿区内工农业生产、建筑材料等概况 ........................................................................21.1.7 区域电源 ........................................................................................................................21.2 井田地质特征 .......................................................................................................................31.2.1 地层 ................................................................................................................................31.2.2 井田地质构造 ................................................................................................................51.2.3 水文地质条件 ................................................................................................................61.3 煤层特征 ...............................................................................................................................81.3.1 煤层 ................................................................................................................................81.3.2 煤层顶底板 ....................................................................................................................91.3.3 煤质及工业用途 ..........................................................................................................101.3.4 瓦斯 ..............................................................................................................................111.3.5 煤尘 ..............................................................................................................................121.3.6 煤的自燃 ......................................................................................................................121.3.7 地温 ..............................................................................................................................122 井田境界和储量 .......................................................................................................................132.1 井田境界 .............................................................................................................................132.1.1 井田范围 ......................................................................................................................132.1.2 开采界限 ......................................................................................................................132.1.3 井田尺寸 ......................................................................................................................132.2 矿井工业储量 .....................................................................................................................142.2.1 地质资源储量 ..............................................................................................................142.2.2 工业资源/储量 .............................................................................................................152.3 矿井可采储量 .....................................................................................................................162.3.1 安全煤柱留设原则 ......................................................................................................162.3.2 矿井永久保护煤柱损失量 ..........................................................................................162.3.3 矿井可采储量 ..............................................................................................................17中国矿业大学 2011 届本科生毕业设计 第 II 页3 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 .........................................................................................193.2.1 确定依据 ......................................................................................................................193.2.2 矿井设计生产能力 ......................................................................................................193.2.3 服务年限 ......................................................................................................................193.2.4 井型校核 ......................................................................................................................204 井田开拓 ...................................................................................................................................214.1 井田开拓的基本问题 .........................................................................................................214.1.1 确定井筒形式、数目、位置及坐标 ..........................................................................214.1.2 工业场地的位置 ..........................................................................................................224.1.3 阶段划分及开采水平的确定 ......................................................................................234.1.4 主要开拓巷道 ..............................................................................................................234.1.5 矿井开拓延深 ..............................................................................................................234.1.6 方案比较 ......................................................................................................................234.2 矿井基本巷道 .....................................................................................................................294.2.1 井筒 ..............................................................................................................................294.2.2 井底车场及硐室 ..........................................................................................................294.2.3 主要开拓巷道 ..............................................................................................................375 准备方式— 采区巷道布置 .......................................................................................................405.1 煤层地质特征 .....................................................................................................................405.1.1 采区位置 ......................................................................................................................405.1.2 采区煤层特征 ..............................................................................................................405.1.3 煤层顶底板岩石构造情况 ..........................................................................................405.1.4 水文地质 ......................................................................................................................405.1.5 主要地质构造 ..............................................................................................................405.1.6 地表情况 ......................................................................................................................405.2 采区巷道布置及生产系统 .................................................................................................415.2.1 采区范围及区段划分 ..................................................................................................415.2.2 煤柱尺寸的确定 ..........................................................................................................415.2.3 采煤方法及首采工作面工作面长度的确定 ..............................................................415.2.4 确定采区各种巷道的尺寸、支护方式 ......................................................................415.2.5 采区巷道的联络方式 ..................................................................................................415.2.6 采区接替顺序 ..............................................................................................................425.2.7 采区生产系统 ..............................................................................................................425.2.8 采区内巷道掘进方法 ..................................................................................................425.2.9 采区生产能力及采出率 ..............................................................................................455.3 采区车场选型设计 .............................................................................................................47中国矿业大学 2011 届本科生毕业设计 第 III 页6 采煤方法 ...................................................................................................................................486.1 采煤工艺方式 .....................................................................................................................486.1.1 采区煤层特征及地质条件 .............................
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