许疃煤矿0.9Mta新井设计【专题高瓦斯矿井瓦斯抽采技术发展】.docx

1、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0.9Mt/a新井设计。许疃矿位于安徽省宿州市，区内交通十分便利。井田东西走向长6.6km，南北倾向宽3.5km，井田面积约21.2km2。井田内可采煤层共有10层，主采煤层为72、82煤。井田内72煤倾角在816之间，平均厚度3m。矿井工业储量为349.19Mt，可采储量为265.55Mt，设计服务年限210.75a。矿井正常涌水量为550m3/h，最大涌水量为650m3/h。矿井相对瓦斯涌出量为22m3/t，绝对瓦斯涌出量为41.67m3/min，属高瓦斯矿井。煤层无自然发火倾向，但煤尘有爆炸危险性。根据井田地质条件

2、，提出四个技术上可行的开拓方案。方案一：立井单水平开拓，风井位于井田中央；方案二：立井单水平开拓，风井位于井田两侧；方案三：立井两水平开拓；方案四：立井两水平开拓，暗立井、暗斜井延伸。通过粗略和详细技术经济比较，最终确定方案二为最优方案。水平标高-650m。整个井田划分为4个带区和4个采区。考虑到井田南北走向较长，矿井生产前期采用中央并列式通风方式，后期根据需要在井田东西两翼增加两个边界回风井。矿井采用带区式准备方式，工作面设计长度200m。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0.6m，日产量为3

3、182.7t。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6t底卸式箕斗提煤，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：高瓦斯矿井瓦斯抽采技术发展分析。主要分析了近年瓦斯的抽采技术发展。翻译部分主要内容是关于长壁开采采空区上部地表残余变形的机理与控制，英文题目为：Numerical simulation of the factors inuencing dust in drilling tunnels: Its application。关键词：立井；两水平；带区；综合机械化放顶煤；两翼对角式ABSTRACTThis de

4、sign includes three parts: the general design, the monographic study and the translation.The general design is about a 0.9 Mt/a new underground mine design of Xutuan Coal Mine. Xutuan Coal Mine lies in the Suzhou City, Anhui province. The transportation in the mining area is very convenient. Its abo

5、ut 6.6 km on the strike and 3.5 km on the dip, with the 21.2 km2 total area. There are 10 minable coal seam. The main aquifer coal seam is 72、82 coal seam with an average thickness of 3 m, and the dip of 72 coal seam is 816. The proved reserves of this coal mine are 349.19 Mt and the minable reserve

6、s are 265.55 Mt, with a mine life of 210.75 a. The normal mine inflow is 550 m3/h and the maximum mine inflow is 650 m3/h. The mine relative gas emission quantity is 22 m3/t, and the absolute gas emission quantity is 41.67m3/min. Thus, it is a low gas mine. The coal seam has no spontaneous combustio

7、n tendency, but 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 one mining level, and the air shaft in central Ida; the second is vertical shaft development with one

8、mining level, and The air shaft in both sides of Ida; the third is vertical shaft development with two mining levels, and the last is vertical shaft development with two mining levels, the deep extension of blind slope and blind shaft. The second project is the best comparing with other three projec

9、ts in technology and economy. The mining level is -650m. The mine field is divided into 4 strip districts and 4mining districts. Taking into account the long distance in the south and north direction, The type of mine ventilation is the two wings of right angle type at the beginning period. At the l

10、ater period, The type of mine ventilation is the centralized juxtapose ventilation two wings diagonal ventilation.Designed first mining district makes use of the method of the mining district preparation. The design length of working face is 200 m. The working days in one year are 330. Everyday it t

11、akes 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. So everyday there are 3 working cycles. The advance of a working cycle is 0.6 m, and the quantity of 3182.7 ton coal is mak

12、ed 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 6 t skips to lift coal and the auxiliary shaft uses a twins wide 1.5 t four-car double-deck cage to lift material and personnel transportation.The mo

13、nographic study entitled High-gas coal mine gas drainage technical analysis. The study mainly analyse the Mine gas extraction technology. The translated academic paper is about Longwall mining mechanism and control of the upper part of the residual deformation of the surface goaf. Its title is “Mech

14、anism and control of ground residual deformation over longwall goaf”.Keywords: shaft; two mining levels; strip district; fully mechanized mining with top coal caving; Two wings of right angle type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102.1井田境界102.2矿井工业储量103 矿井工作制度、设计生产能力及服务年限153.1矿井工作制度

15、153.2矿井设计生产能力及服务年限154 井田开拓174.1井田开拓基本问题174.2矿井基本巷道275 准备方式带区巷道布置375.1煤层地质特征375.2带区巷道布置及生产系统395.3带区车场选型计算416 采煤方法446.1采煤工艺方式446.2回采巷道布置627 井下运输687.1概述687.2带区运输设备选择697.3大巷运输设备选718 矿井提升758.1矿井提升概述758.2主副井提升759 矿井通风及安全809.1矿井地质、开拓、开采概况809.2矿井通风系统的确定819.3矿井风量计算849.4矿井阻力计算909.5选择矿井通风设备979.6安全灾害的预防措施10010 设计矿井基本技术经济指标1021煤矿瓦斯抽采技术的发展1031. 1 煤矿瓦斯赋存条件1031. 2 瓦斯抽采的目的1031. 3 煤矿瓦斯抽采量1041. 4 煤矿瓦斯事故分析1042 煤矿瓦斯抽采理念的发展1062. 1 局部防突措施为主1062. 2 先抽后采1062. 3 抽采达标1062. 4 区域防突措施先行1073 煤矿瓦斯抽采指标、方法分类及选择1083. 1 瓦斯抽采指标1083. 2 瓦斯抽采方法分类1083. 3 瓦斯抽采方法选择1094 煤矿瓦斯抽采方法1114. 1 地面钻井采前抽采瓦斯1114. 2 被保护层采前抽采瓦