涡北煤矿1.80Mta新井设计【专题高瓦斯矿井瓦斯抽放系统研究】.pdf

1、 摘 要 本设计包括三个部分：一般设计部分、专题设计部分和翻译部分。一般部分为涡北煤矿 1.8 Mt/a 的新井设计。涡北煤矿位于安徽省涡阳境内，交通十分便利。井田走向（南北）长平均约 6 km，倾向（东西）长平均约 3.2km，井田水平面积为19 km2。主采煤层两层，即 81、82号煤层，平均倾角 23，平均厚度分别为 3.96 m 和 8.70m。井田工业储量为 233.60 Mt，可采储量 126.60Mt，矿井服务年限为 50.24 a。井田地质条件简单。表土层平均厚度 32 m；矿井正常涌水量为 420 m3/h，最大涌水量为 860 m3/h；煤层硬度系数 f=23，煤质牌号为

2、JM；矿井绝对瓦斯涌出量为 7.50m3/min，属低瓦斯矿井；煤层无自燃发火倾向，煤尘具有爆炸危险性。根据井田地质条件，提出四个技术上可行开拓方案。方案一：立井两水平开采，暗斜井延深，一水平设在-700 m，二水平设在-1000m；方案二：立井两水平开采，立井延深，一、二水平分别设在-700 m 和-1000m；方案三：立井三水平开采，立井延伸，分别设在-600 m、-800m 和-1000m；方案四：立井三水平开采，暗斜井延伸，分别设在-600 m、-800m 和-1000m。通过技术经济比较，最终确定方案一为最优方案。将主采煤层划分为两个水平，一水平标高-700 m，二水平标高-1000

3、m。设计首采区采用采区准备方式，工作面长度 220 m，采用一次采全高采煤法，全部跨落法处理采空区。矿井采用“四六”制作业，三班生产，一班检修。生产班每班 2 个循环，日进 6 个循环，循环进尺 0.6 m，日产量 4233.66 t。大巷采用带式输送机运煤，辅助运输采用架线式电机车牵引 1.5 t 固定箱式小矿车。主井装备两套 20t 异卸载多绳摩擦式双箕斗提煤，副井装备两套 1.5t 双层宽罐笼带平衡锤担负辅助运输任务。矿井采用中央并列式通风。通风容易时期矿井总需风量 6673.8 m3/min，矿井通风总阻力 996.2Pa，风阻 0.061N s2/m8，等积孔 4.80 m2，矿井通

4、风容易。矿井通风困难时期矿井总风量 6673.8 m3/min，矿井通风总阻力 2799.77 Pa，风阻 0.172 N s2/m8，等积孔 2.86m2，矿井通风中等困难。设计矿井的工作面吨煤成本 32 元/t。专题部分题目是高瓦斯矿井瓦斯抽放系统研究。翻译部分是一篇关于锚杆的分析模型的论文，英文原文题目为：Analytical models for rock bolts。关键词：立井；大采高；双巷掘进；中央并列式 ABSTRACT This design can be divided into three sections:general design,monographic study

5、 and translation of an academic paper.The general design is about a 1.8 Mt/a new underground mine design of Guobei coal mine.Guobei coal mine lies in Guoyang,Anhui province.The traffic is very convenient.Its about6 km on the strike and 3.2 km on the dip,with the 19 km2 total horizontal area.The mina

6、ble coal seam of this mine is 81 and 82 with an average thickness of 3.96 m and 8.70m.The average dip is 23.The proved reserves of this coal mine are 233.60 Mt and the minable reserves are 126.60 Mt,with a mine life of 50.24 a.The geological condition of the mine is relatively simple.The normal mine

7、 inflow is 420m3/h and the maximum mine inflow is 860 m3/h.It is bituminous coal with low mine gas emission rate and no coal spontaneous combustion tendency,and its a coal seam liable to explosion.Based on the geological condition of the mine,I bring forward four available project in technology.The

8、first is vertical shaft development with two mining levels and the extension of inclined shaft from-700m to-1000 m;thr second is vertical shaft development with two mining levels and the extension of vertical shaft from-700m to-1000 m;the third is vertical shaft development with three mining levels(

9、-600m、-800m、-1000m)and the extension of inclined shaft;the last is vertical shaft development with three mining levels(-600m、-800m、-1000m)and the extension of vertical shaft.The first project is the best comparing with other three project in technology and economy.The first level is at-700 m,and the

10、 second level is at-1000 m.Designed first mining district makes use of the method of preparation in mining area,the length of working face is 220 m,which uses fully-mechanized coal mining technology,and fully caving method to deal with goaf.The working system is“four-sixt”,with three teams mining,an

11、d the other overhauling.Every mining team makes three working cycle,with six working cycle everyday.Advance of working cycle is 0.6 m,and quantity of 4233.66 ton coal is makedeveryday.Main roadway makes use of belt conveyor to transport coal resource,and mine car to be assistant transport.Main shaft

12、 makes use of skip to transport coal resource,when subsidiary shaft makes use of cage to be assistant transport.In the prophase of mining the mine makes use of centralized ventilation method,when in the evening of mining the mine makes use of areas ventilation method.At the easy time of mine ventila

13、tion,the total air quantity is 6673.8 m3 per minute,the total mine ventilation resistance is 996.2 Pa,the coefficient of resistance is 0.061 N s2/m8,equivalent orifice is 4.80 m2.At the difficult time of mine ventilation,the total air quantity is about 6673.8 m3 per minute,the total mine ventilation

14、 resistance is 2799.77 Pa,the coefficient of resistance is 0.172 N s2/m8,equivalent orifice is 2.86 m2.The cost of the designed mine face is 32 yuan per ton.The monographic study is High-gas coal mine gas drainage system.The translated academic paper is about Analytical models for rock bolts.Keyword

15、s：shaft;large mining height;double thunnel drivage;centralized juxtapose ventilation.目 录 一般设计部分 1 井田概况及地质特征.1 1.1.井田概况.1 1.1.1.交通位置.1 1.1.2.地貌水系.1 1.1.3.气 象.1 1.1.4.地 震.1 1.1.5.矿区内工农业生产、建筑材料等概况.1 1.1.6.区域电源.2 1.1.7.水源.2 1.2.地质特征.3 1.2.1.地质构造.3 1.2.2.煤层与煤质.5 1.2.3.其它开采技术条件.5 2 井田境界和储量.10 2.1.井田境界.10

16、2.2.矿井工业储量.10 2.2.1.勘查方法、勘查类型及勘查工作布置原则.10 2.2.2.储量计算原则.10 2.2.3.储量计算.11 2.3.可采储量.13 3 矿井设计生产能力及服务年限.15 3.1.矿井工作制度.15 3.2.矿井设计生产能力及服务年限.15 3.2.1.确定依据.15 3.2.2.矿井设计生产能力.15 3.2.3.矿井服务年限.15 4 井田开拓.17 4.1.井田开拓的基本问题.17 4.1.1.确定井筒形式、数目、位置及坐标.17 4.1.2.工业场地的位置.19 4.1.3.开采水平的确定及采盘区的划分.19 4.1.4.主要开拓巷道.19 4.1.5.方案比较.19 4.2.矿井基本巷道.24 4.2.1.井筒.24 4.2.2.井底车场及硐室.28 4.2.3.主要开拓巷道.29 5 准备方式采区巷道布置.33 5.1.煤层地质特征.33 5.1.1.采区位置.33 5.1.2.采区煤层特征.33 5.1.3.煤层顶底板岩石构造情况.33 5.1.4.水文地质.33 5.1.5.地质构造.33 5.2.采区巷道布置及生产系统.33 5.2.