许疃煤矿1.5 Mta新井设计-许疃煤矿综放沿空掘巷巷道支护技术分析-深部高应力破碎软岩巷道让压支护试验研究.doc
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1、【精品文档】如有侵权,请联系网站删除,仅供学习与交流许疃煤矿1.5 Mta新井设计-许疃煤矿综放沿空掘巷巷道支护技术分析-深部高应力破碎软岩巷道让压支护试验研究.精品文档.中 国 矿 业 大 学本科生毕业设计姓 名: 学 号: 学 院: 矿业工程学院 专 业: 采矿工程 设计题目: 许疃煤矿1.5 Mt/a新井设计 专 题: 许疃煤矿综放沿空掘巷巷道支护技术分析 指导教师: 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2008级 学生姓名 任务下达日期:2012年1月8日毕业设计日期:2012年3月12日 至 2012年6月8日毕业设计
2、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
3、broken soft rock under high stress”,论文4247字符。院长签字: 指导教师签字: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6.36.8km,倾斜宽2.143.82km,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716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
4、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
5、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
6、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ABSTRACTThis design includes three parts: the general design, the monographic study and the translation.The general design is about a 1.5Mt/
7、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. Its about 6.36.8km on the strike and 2.143.82km on the dip, with the 22.75km2 total area. There are 8 minable coal seam.
8、 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 716. 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 in
9、flow 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
10、 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 minin
11、g 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 compar
12、ing 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 d
13、esign 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 th
14、ree 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
15、 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-mechaniz
16、ed 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
17、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 stres
18、s. 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11.1矿区概述11.1.1地理位置11.
19、1.2地形、地貌11.1.3交通条件21.1.4气候、地震21.1.5水文情况21.1.6矿区经济概况21.1.7水源、电源21.2井田地质特征21.2.1井田煤系地层21.2.2井田地质构造41.2.3井田水文地质特征51.3煤层特征71.3.1可采煤层赋存特征71.3.2煤质81.3.3煤层开采技术条件92 井田境界和储量102.1井田境界102.1.1井田范围102.1.2开采界限102.2矿井工业储量102.2.1储量计算基础102.2.2井田地质勘探102.2.3矿井工业储量计算102.3矿井可采储量122.3.1安全煤柱留设原则122.3.2矿井保护煤柱损失量122.3.3矿井设计
20、可采储量143 矿井工作制度、设计生产能力及服务年限163.1矿井工作制度163.2矿井设计生产能力及服务年限163.2.1矿井设计生产能力163.2.2确定依据163.2.3服务年限163.2.4井型校核174 井田开拓184.1井田开拓基本问题184.1.1确定井筒形式、数目、位置及坐标184.1.2工业场地的位置194.1.3开采水平的确定及带区、采区的划分204.1.4主要开拓巷道204.1.5开拓方案比较204.2矿井基本巷道274.2.1井筒274.2.2开拓巷道314.2.3井底车场及硐室355 准备方式带区巷道布置375.1煤层地质特征375.1.1带区位置375.1.2带区煤
21、层特征375.1.3煤层顶底板岩石构造情况375.1.4水文地质375.1.5地质构造375.2带区巷道布置及生产系统385.2.1带区准备方式的确定385.2.2带区巷道布置385.2.4带区生产系统385.2.5带区内巷道掘进395.2.6带区生产能力及采出率405.3带区车场选型计算416 采煤方法426.1 采煤工艺方式426.1.1 采煤方法的选择426.1.3回采工作面参数426.1.4回采工艺及工作面设备选型436.1.5采煤工作面支护方式466.1.6端头支护及超前支护方式476.1.7各工艺过程注意事项486.1.8采煤工作面正规循环作业496.2回采巷道布置516.2.1回
22、采巷道布置方式516.2.2回采巷道参数517 井下运输547.1概述547.1.1井下运输设计的原始条件与数据547.1.2运输距离和货载量547.1.3井下运输系统547.2带区运输设备选型557.2.1设备选型原则557.2.2带区运输设备的选型及能力验算557.3大巷运输设备选型577.3.1运煤设备577.3.2辅助运输设备选择588 矿井提升608.1矿井提升概述608.2主副井提升608.2.1主井提升608.2.2副井提升619 矿井通风及安全649.1矿井通风系统选择649.1.1矿井概述649.1.2矿井通风系统的确定649.1.3带区通风系统的确定659.1.4矿井通风容
23、易与困难时期的确定669.2带区及全矿所需风量699.2.1采煤工作面实际需风量699.2.2掘进工作面实际需风量709.2.3硐室需风量719.2.4其它巷道需风量719.2.5矿井所需总风量719.2.6风量分配及风速验算729.3全矿通风阻力的计算739.3.1矿井通风总阻力计算原则739.3.2矿井最大阻力路线739.3.3矿井通风阻力计算739.3.4矿井通风总阻力749.4矿井通风设备选型759.4.1主要通风机选型759.4.2电动机选型789.4.3主要通风机附属装置789.5防治特殊灾害的安全措施799.5.1预防瓦斯灾害的措施799.5.2预防煤尘灾害的措施799.5.3预
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