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设计说明书1份，共145页，约83000字左右

CAD版本图纸，共5张

毕业设计任务书

毕业设计题目： 许疃煤矿1.5 Mt/a新井设计

毕业设计专题题目：许疃煤矿综放沿空掘巷巷道支护技术分析
毕业设计主要内容和要求：
以实习矿井许疃煤矿条件为基础，完成许疃煤矿1.5Mt/a新井设计。主要内容包括：矿井概况、矿井工作制度及设计生产能力、井田开拓、首采区设计、采煤方法、矿井通风系统、矿井运输提升等。
结合煤矿生产前沿及矿井设计情况，撰写一篇关于综放沿空掘巷巷道支护技术的专题论文。
完成2011年《采矿科学与技术》上与采矿有关的科技论文翻译一篇，题目为“An experimental study of a yielding support for roadways constructed in deep broken soft rock under high stress”，论文4247字符。
摘  要
本设计包括三个部分：一般部分、专题部分和翻译部分。
一般部分为许疃煤矿1.5Mt/a新井设计。许疃煤矿位于安徽省宿州市境内，区内交通十分便利。井田走向长6.3~6.8km，倾斜宽2.14~3.82km，井田面积22.75km2。井田内可采煤层共有8层，主采煤层为72和82煤。井田内72和82煤倾角均在7~16°之间，72煤平均厚度3.0m，82煤平均厚度9.0m。矿井工业储量为346.42Mt，可采储量为229.25Mt，设计服务年限109.2a。矿井正常涌水量为550m3/h，最大涌水量为660m3/h。矿井相对瓦斯涌出量为12.0m3/t，绝对瓦斯涌出量为37.879m3/min，属高瓦斯矿井。煤层属于有可能自燃发火—不自燃发火，煤尘有爆炸危险性。
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：立井单水平开拓，中央并列式通风；方案二：立井单水平开拓，两翼对角式通风；方案三：立井两水平开拓，暗斜井延深；方案四：立井两水平开拓，暗立井延深。通过粗略和详细技术经济比较，最终确定方案一为最优方案。水平标高-650m，整个井田划分为5个带区和2个采区，采用中央并列式通风方式。
矿井采用带区式准备方式，工作面设计长度210m，采用综合机械化一次性采全高采煤工艺。矿井年工作日为330d，昼夜净提升时间为16h。矿井采用“三八”制工作制度，两班生产，一班检修,生产班每班完成3个采煤循环。循环进尺为0.8m，日产量为4127.71t。
矿井煤炭采用胶带输送机运输，辅助运输采用蓄电池式电机车牵引固定箱式矿车。主井采用两对16t侧卸式箕斗提煤，副井采用一对1.5t矿车双层四车加宽罐笼运送物料和升降人员。
专题部分题目为：许疃煤矿综放沿空掘巷巷道支护技术分析。主要分析了综合机械化放顶煤开采时沿空掘巷巷道变形破坏的机理，理论分析所留保护煤柱的宽度以及合理选择掘巷的位置，并提出了使用以高强预应力让压锚杆为核心的锚网支护系统对围岩进行控制。
翻译部分主要内容是关于深部高应力破碎软岩巷道可缩性支护试验研究，英文题目为：An experimental study of a yielding support for roadways constructed in deep broken soft rock under high stress。
关键词：立井；单水平；带区；综合机械化一次性采全高；中央并列式通风
 
ABSTRACT
This design includes three parts: the general design, the monographic study and the translation.
The general design is about a 1.5Mt/a new underground mine design of Xutuan Coal Mine. Xutuan Coal Mine lies in the southwest of Suzhou City, Anhui province. The transportation in the mining area is very convenient. It’s about 6.3～6.8km on the strike and 2.14～3.82km on the dip, with the 22.75km2 total area. There are 8 minable coal seam. The main aquifer coal seam is 72 coal seam with an average thickness of 3.0m and 82 coal seam with an average thickness of 9.0m .Both the dip of coal seam is 7~16°. The proved reserves of this coal mine are 346.42Mt and the minable reserves are 229.25Mt, with a mine life of 109.2a. The normal mine inflow is 550m3/h and the maximum mine inflow is 660m3/h. The mine relative gas emission quantity is 12.0m3/t, and the absolute gas emission quantity is 37.879m3/min. Thus, it is a high gas mine. The coal seam range from tend to spontaneous combustion to have no tendency of spontaneous combustion, and the coal dust has explosion hazard.
Based on the geological conditions of the mine, I bring forward four available project in technology. The first is vertical shaft development with single mining level and centralized juxtapose ventilation; the second is vertical shaft development with single mining level and two wings of diagonal ventilation; the third is vertical shaft development with two mining levels, the deep extension of blind slope; and the last is vertical shaft development with two mining levels, the deep extension of blind slope and blind shaft. The first project is the best comparing with other three projects in technology and economy. The mining level is -650m, and the mine field is divided into five strip districts and two mining district, with centralized juxtapose ventilation.
Designed first mining district makes use of the method of the mining district preparation. The design length of working face is 210m, which uses fully mechanized mining the full -height. The working days in one year are 330. Everyday it takes 16 hours in lifting the coal. The operation mode in the mine is “three-eight” with two teams mining and the other overhauling. Every mining team makes three working cycle, and the overhauling team makes one working cycle. So everyday there are 7 working cycles. The advance of a working cycle is 0.8m, and the quantity of 4127.71 ton coal is maked everyday.
Main roadway makes use of belt conveyor to transport coal resource, and mine car to be assistant transport. The main shaft uses two double 16t skips to lift coal and the auxiliary shaft uses a twins wide 1.5t four-car double-deck cage to lift material and personnel transportation.
The monographic study entitled “Research on technology of surrounding rock controlling supporting in fully-mechanized caving roadway in Xutuan coal mines”. The study mainly analyse the instability failure reasons of fully-mechanized caving roadway with the application of gob-side entry driving. Then give a theoretical analysis the width of the protective pillar and how to make a reasonable choice of lane in the position. Finally, the corresponding control measures and control mechanism on surrounding rock, which in the core of high resistance and yielding bolt, are raised in this study.
The translated academic paper is about yielding support for roadways constructed in deep broken soft rock under high stress. Its title is “An experimental study of a yielding support for roadways constructed in deep broken soft rock under high stress”.
Keywords: shaft; single mining level; strip district; fully mechanized mining the full -height; centralized juxtapose ventilation
 
目    录
一般部分
1 矿区概述及井田地质特征 1
1.1矿区概述 1
1.1.1地理位置 1
1.1.2地形、地貌 1
1.1.3交通条件 2
1.1.4气候、地震 2
1.1.5水文情况 2
1.1.6矿区经济概况 2
1.1.7水源、电源 2
1.2井田地质特征 2
1.2.1井田煤系地层 2
1.2.2井田地质构造 4
1.2.3井田水文地质特征 5
1.3煤层特征 7
1.3.1可采煤层赋存特征 7
1.3.2煤质 8
1.3.3煤层开采技术条件 9
2 井田境界和储量 10
2.1井田境界 10
2.1.1井田范围 10
2.1.2开采界限 10
2.2矿井工业储量 10
2.2.1储量计算基础 10
2.2.2井田地质勘探 10
2.2.3矿井工业储量计算 10
2.3矿井可采储量 12
2.3.1安全煤柱留设原则 12
2.3.2矿井保护煤柱损失量 12
2.3.3矿井设计可采储量 14
3 矿井工作制度、设计生产能力及服务年限 16
3.1矿井工作制度 16
3.2矿井设计生产能力及服务年限 16
3.2.1矿井设计生产能力 16
3.2.2确定依据 16
3.2.3服务年限 16
3.2.4井型校核 17
4 井田开拓 18
4.1井田开拓基本问题 18
4.1.1确定井筒形式、数目、位置及坐标 18
4.1.2工业场地的位置 19
4.1.3开采水平的确定及带区、采区的划分 20
4.1.4主要开拓巷道 20
4.1.5开拓方案比较 20
4.2矿井基本巷道 27
4.2.1井筒 27
4.2.2开拓巷道 31
4.2.3井底车场及硐室 35
5 准备方式—带区巷道布置 37
5.1煤层地质特征 37
5.1.1带区位置 37
5.1.2带区煤层特征 37
5.1.3煤层顶底板岩石构造情况 37
5.1.4水文地质 37
5.1.5地质构造 37
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 38
5.2.4带区生产系统 38
5.2.5带区内巷道掘进 39
5.2.6带区生产能力及采出率 40
5.3带区车场选型计算 41
6 采煤方法 42
6.1 采煤工艺方式 42
6.1.1 采煤方法的选择 42
6.1.3回采工作面参数 42
6.1.4回采工艺及工作面设备选型 43
6.1.5采煤工作面支护方式 46
6.1.6端头支护及超前支护方式 47
6.1.7各工艺过程注意事项 48
6.1.8采煤工作面正规循环作业 49
6.2回采巷道布置 51
6.2.1回采巷道布置方式 51
6.2.2回采巷道参数 51
7 井下运输 54
7.1概述 54
7.1.1井下运输设计的原始条件与数据 54
7.1.2运输距离和货载量 54
7.1.3井下运输系统 54
7.2带区运输设备选型 55
7.2.1设备选型原则 55
7.2.2带区运输设备的选型及能力验算 55
7.3大巷运输设备选型 57
7.3.1运煤设备 57
7.3.2辅助运输设备选择 58
8 矿井提升 60
8.1矿井提升概述 60
8.2主副井提升 60
8.2.1主井提升 60
8.2.2副井提升 61
9 矿井通风及安全 64
9.1矿井通风系统选择 64
9.1.1矿井概述 64
9.1.2矿井通风系统的确定 64
9.1.3带区通风系统的确定 65
9.1.4矿井通风容易与困难时期的确定 66
9.2带区及全矿所需风量 69
9.2.1采煤工作面实际需风量 69
9.2.2掘进工作面实际需风量 70
9.2.3硐室需风量 71
9.2.4其它巷道需风量 71
9.2.5矿井所需总风量 71
9.2.6风量分配及风速验算 72
9.3全矿通风阻力的计算 73
9.3.1矿井通风总阻力计算原则 73
9.3.2矿井最大阻力路线 73
9.3.3矿井通风阻力计算 73
9.3.4矿井通风总阻力 74
9.4矿井通风设备选型 75
9.4.1主要通风机选型 75
9.4.2电动机选型 78
9.4.3主要通风机附属装置 78
9.5防治特殊灾害的安全措施 79
9.5.1预防瓦斯灾害的措施 79
9.5.2预防煤尘灾害的措施 79
9.5.3预防井下火灾的措施 80
9.5.4预防井下水灾的措施 80
10 设计矿井基本技术经济指标 82
参考文献 83
专题部分
许疃煤矿综放沿空掘巷巷道支护技术分析 84
1 绪论 84
1.1研究意义 84
1.2国内外研究概况 85
1.2.1煤柱留设研究现状 85
1.2.2沿空掘巷矿压显现规律研究现状 87
1.2.3沿空掘巷围岩控制与支护技术研究现状 87
1.3问题的提出 89
2沿空掘巷围岩控制理论研究 90
2.1沿空掘巷围岩变形破坏机理分析 90
2.1.1煤层巷道失稳力学机理 90
2.1.2综放沿空巷道破坏形式 91
2.2沿空掘巷合理位置的选择 92
2.3煤柱宽度理论分析 94
2.3.1煤柱极限强度计算 94
2.3.2煤柱承受荷载的计算 95
2.3.3合理煤柱宽度的弹塑性力学分析 96
3 综放沿空巷道围岩控制及支护技术在许疃煤矿的应用 98
3.1高强预应力让压锚杆 98
3.1.1高强预应力让压锚杆力学模型 99
3.1.2 高强让压锚杆的支护机制 100
3.2综放沿空巷道围岩控制技术在许疃煤矿的应用 100
3.2.1锚杆支护设计方法 100
3.2.2锚杆支护破坏机理 102
3.2.3沿空巷道围岩控制措施 103
4 结论 106
专题部分
参考文献 107
英文原文 108
中文译文 119
致  谢 127