许厂煤矿2.4Mta新井设计.pdf

1、 摘 要 一般部分对济宁许厂矿井进行了井型为 2.4Mt/a 的新井设计。许厂矿井位于山东省济宁市内，井田走向长约 8.0km，倾向长约 4.0km，面积约 30km2。主采煤层为 3下煤层，煤层倾角 119，平均倾角 10，平均厚度 6.5m。井田工业储量为 259.77Mt，可采储量192.02Mt，矿井服务年限为 61.54a。矿井正常涌水量为 610m3/h，最大涌水量为 695m3/h；矿井相对瓦斯涌出量为 0.49m3/t，属低瓦斯矿井。根据井田地质条件，设计采用双立井两水平开拓方式，井田采用采、带区结合布置方式，共划分为五个带区，两个采区，轨道大巷、运输大巷皆为岩石大巷，布置在煤

2、层底板岩层中。矿井通风方式采用混合式通风。针对东一带区采用了带区准备方式，共划分 12 个分带工作面，并进行了运煤、通风、运料、排矸、供电系统设计。针对 3101 工作面进行了采煤工艺设计。该工作面煤层平均厚度为 6.5m，平均倾角 5。工作面采用综采放顶煤采煤法。采用双滚筒采煤机割煤，往返一次割两刀。采用“三八制”工作制度，截深 0.8m，每天六个循环，循环进尺 4.8m，月推进度 144m。大巷采用胶带输送机运煤，辅助运输采用蓄电池式电机车牵引固定箱式矿车。主井采用一对 16t 侧卸式箕斗提煤，副井采用一对 3t 矿车双层四车加宽罐笼运料和升降人员。专题部分题目为厚煤层开采技术研究，针对目

3、前厚煤层开采方法的发展、应用现状以及存在的问题，分析了分层开采、大采高和放顶煤开采 3 种方法在技术和经济上的优越性及适用条件。并结合实际案例分析了厚煤层开采方法的选择原则。翻译部分题目为Analysis of Water Insulating Effect of Compound Water-Resisting Key Strata in Deep Mining。关键词关键词：许厂矿井；带区；放顶煤；厚煤层；隔水关键层 ABSTRACT The general design is about a 2.4 Mt/a new underground mine design of Xuchang

4、coal mine.Xuchang coal mine is located in Jining,Shandong province.Its about 8.0 km on the strike and 4.0 km on the dip,with the 32 km2 total horizontal area.The minable coal seam is 3#with an average thickness of 6.5 m.The dip of coal seam is 1 to 19 and average dip is 10.The proved reserves of thi

5、s coal mine are 259.77 Mt and the minable reserves are 192.02 Mt,with a mine life of 61.54 a.The normal mine inflow is 610 m3/h and the maximum mine inflow is 695 m3/h.The mine gas emission rate is 0.49m3/t,which can be recognized as low gas mine.Based on the geological condition of the mine,this de

6、sign uses a duel-vertical shaft two-level development method,and full strip preparation,which divided into five strip districts and two districts,and track roadway,belt conveyor roadway and return airway are all rock roadways,arranged in the floor rock of coal seam.Taking into account of the low gas

7、 emission,mine ventilation method use blended ventilation.The design applies strip preparation against the first band of East One which divided into 12 stirps totally,and conducted coal conveyance,ventilation,gangue conveyance and electricity designing.The design conducted coal mining technology des

8、ign against the 3101 face.The coal seam average thickness of this working face is 6.5 m and the average dip is 5.The working face applies top coal caving mining method,and uses double drum shearer cutting coal which cuts twice each working cycle.Three-Eight working system has been used in this desig

9、n and the depth-web is 0.8 m with six working cycles per day,and the advance of a working cycle is 4.8 m and the advance is 144 m per month.Main roadway makes use of belt conveyor to transport coal resource,and battery locomotive to be assistant transport.The main shaft uses double 16 t skips to lif

10、t coal and the auxiliary shaft uses a twins narrow 3t four-car double-deck cage to lift material and personnel transportation.The monographic study entitled The technology research of thick seam mining,According to the development and application staus of the thick seam mining methods in China,the p

11、aper analyzed the technical and economic advantages and application conditions of the high cutting,top coal caving mining and slicing mining methods.In combination with the actual case,analyse the thick coal seam mining method selection principle.The title of the translated academic paper is Analysi

12、s of Water Insulating Effect of Compound Water-Resisting Key Strata in Deep Mining.Keywords:Xuchang coal mine;strip district;top coal caving;thick coal seam;water-resisting key strata 目 录 一般部分一般部分 1 矿区概述及井田地质特征矿区概述及井田地质特征.1 1.1 矿区概述.1 1.1.1 矿区地理位置.1 1.1.2 地形地貌及水系.1 1.1.3 气象及地震.1 1.1.4 矿井电源.1 1.2 井田地

13、质特征.1 1.2.1 地层.1 1.2.2 含煤地层.3 1.2.3 地质构造.3 1.2.4 水文地质条件.4 1.3 煤层特征.6 1.3.1 煤层.6 1.3.2 煤质.7 1.3.3 可采煤层顶底板岩性.8 1.3.4 矿井瓦斯、煤尘、煤的自燃、地温及冲击地压.9 2 井田境界与储量井田境界与储量.10 2.1 井田境界.10 2.2 矿井工业储量.10 2.2.1 构造类型.10 2.2.2 矿井工业储量.10 2.3 矿井可采储量.12 2.3.1 井田边界保护煤柱.12 2.3.2 工业广场煤柱.12 2.3.3 断层保护煤柱.13 2.3.4 矿井可采储量.14 3 矿井工作

14、制度、设计生产能力及服务年限矿井工作制度、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 4 井田开拓井田开拓.18 4.1 井田开拓的基本问题.18 4.1.1 井筒形式的确定.18 4.1.2 井筒位置的确定采（带）区划分.20 4.1.3 工业场地的位置.21 4.1.4 开采水平的确定.22 4.1.5 矿井开拓方案比较.22 4.2 矿井基本巷道.28 4.2.1 井筒.28 4.2.2 开拓巷道.28 4.2.3 井底车场及硐室.28 5 准备方式准备方式带区巷道布置带区巷道布置.36 5.1 煤层地质特征.36 5.1.1 带区

15、位置.36 5.1.2 带区煤层特征.36 5.1.3 煤层顶底板岩石构造情况.36 5.1.4 水文地质.36 5.1.5 地质构造.36 5.1.6 地表情况.36 5.2 带区巷道布置及生产系统.37 5.2.1 带区准备方式的确定.37 5.2.2 带区巷道布置.37 5.2.3 带区生产系统.38 5.2.4 带区内巷道掘进方法.38 5.2.5 带区生产能力及采出率.39 5.3 带区车场选型设计.40 5.3.1 带区车场的形式.40 5.3.2 带区主要硐室布置.40 6 采煤方法采煤方法.42 6.1 采煤工艺方式.42 6.1.1 带区煤层特征及地质条件.42 6.1.2

16、确定采煤工艺方式.42 6.1.3 回采工作面参数.43 6.1.4 回采工作面破煤、装煤方式.43 6.1.5 循环工艺.45 6.1.5 回采工作面支护方式.45 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 回采工作面正规循环作业.49 6.2 回采巷道布置.52 6.2.1 回采巷道布置方式.52 6.2.2 回采巷道支护参数.52 7 井下运输井下运输.55 7.1 概述.55 7.1.1 矿井设计生产能力及工作制度.55 7.1.2 煤层及煤质.55 7.1.3 运输距离和货载量.55 7.1.4 井下运输系统.55 7.2 带区运输设备选择.56 7.2.1 设备选型原则.56 7.2.2 带区运输设备选型及能力验算.56 7.3 大巷运输设备选大巷运输设备选.58 8 矿井提升矿井提升.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 副井提升设备选型.62 9 矿井通风及安全矿井通风及安全.69 9.1 矿井概况、开拓方式及开采方法.69 9.1.1 矿井地质概况.69 9