城郊矿2.4Mta新井设计【专题郑州矿区“三软”不稳定煤层巷道支护技术分析】.doc

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。一般部分为城郊煤矿2.4 Mt/a新井设计。城郊煤矿位于河南省永城市境内，交通便利。井田走向（东西）长度约7.3 km，倾斜（南北）宽度约4.1 km，总面积为32.53 km2。主采煤层为二2煤，煤层平均倾角为5，平均厚度为5.1 m。井田地质条件较为简单。井田工业储量为242.36 Mt，可采储量为168.62 Mt。矿井设计生产能力为2.4 Mt/a，服务年限为54.04 a。矿井涌水量不大，正常涌水量为280 m3/h，最大涌水量为476 m3/h。矿井瓦斯相对涌出量为0.59 m3/t，绝对涌出量为5.62 m3/min，为低瓦

2、斯矿井。井田开拓方式为立井单水平上下山开拓。采用胶带输送机运煤，采用矿车进行辅助运输。矿井通风方式前期为中央并列式通风，后期为两翼对角式通风。矿井年工作日为330 d，工作制度为四六制，日净提升时间为16 h。一般部分共包括10章：1、矿区概况与地质特征；2、井田境界和储量；3、矿井工作制度、设计生产能力及服务年限；4、井田开拓；5、准备方式带区巷道布置；6、采煤方法；7、井下运输；8、矿井提升；9、矿井通风与安全；10、设计矿井基本技术经济指标。专题部分题目是郑州矿区“三软”不稳定煤层巷道支护技术分析，主要分析了郑州矿区“三软”不稳定煤层巷道失稳破坏的原因，并提出了相应的控制技术措施和控制郑

3、州矿区“三软”煤巷支护失效和巷道围岩变形的机制。 翻译部分主要内容是关于巷道掘进过程中粉尘影响因素的数值模拟及其应用，英文题目为：Numerical simulation of the factors inuencing dust in drilling tunnels: Its application关键词：立井；单水平；带区；大采高；上下山；煤巷支护；粉尘ABSTRACTThis design can be divided into three sections: general design, monographic study and translation of an academi

4、c paper.The general design is about a 2.4 Mt/a new underground mine design of Chengjiao coal mine.Chengjiao coal mine lies in Yongcheng,Henan province,the transportation is convenient.Its about 7.3 km on the strike and 4.1 km on the dip, with the 32.53 km2 total horizontal area.The minable coal seam

5、 is 2-2 # with an average thickness of 5.1 m and an average dip of 5. Field geological conditions si simple.The proved reserves of this coal mine are 242.36 Mt and the minable reserves are 168.62 Mt, The design of mine production capacity is 2.4 Mt/a ,with a mine life of 54.04 a. The normal mine inf

6、low is 2800 m3/h and the maximum mine inflow is 476 m3/h. The mine relative gas emission quantity is 0.59 m3/t, and the absolute gas emission quantity is 5.62 m3/min. Thus, it is a low gas mine. The design uses a duel-vertical shaft single-level development method. The central laneway uses Belt Conv

7、eyor to transit coal, and trolley wagons are used for accessorial transportation in the roadway.The ventilation mode of this mine is center juxtapose form at first, then it changes to the two diagonal wings ventilation. The “four-six” working system is used in the Chengjiao mine. It produces for 330

8、 days a year, 16 h time for lifting in a day .This design includes ten chapters: 1.An outline of the mine field geology; 2.Boundary and the reserves of mine; 3.The service life and working system of mine; 4.development engineering of coalfield; 5.The layout of panels; 6. The method used in coal mini

9、ng; 7. Underground transportation of the mine; 8.The lifting of the mine; 9. The ventilation and the safety operation of the mine; 10.The basic economic and technical norms of the designed mine.The monographic study entitled “Analysis on “Three-soft” unstable coal seam roadway support technology of

10、Zhengzhou mining area”. The study mainly analyse the instability failure reasons of “Three-soft” unstable coal seam roadway in Zhengzhou mining area. And the corresponding control measures and control mechanism on surrounding rock are raised in this study.The translated academic paper is about Numer

11、ical simulation of the factors inuencing dust in drilling tunnels. Its title is “Numerical simulation of the factors inuencing dust in drilling tunnels: Its application”.Keywords: Shaft; Single level; Panel; full-height coal caving ; soft coal-seam roadway dust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1

12、1.1.2地貌11.1.3水文21.1.4气象及地震21.1.5矿井电源及水源21.1.6社会概况21.2井田地质特征21.2.1地层31.2.2地质构造31.2.3水文地质特征31.2.4地温31.3煤层特征41.3.1煤层埋藏条件41.3.2煤质41.3.3煤层顶底板41.3.4瓦斯煤尘52 井田境界与储量52.1井田境界52.1.1井田境界划分原则52.1.2井田境界52.1.3井田尺寸52.2矿井工业储量52.2.1井田勘探类型52.2.2矿井工业储量52.2.3矿井煤柱损失62.2.4矿井可采储量82.2.5上下山的储量计算93 矿井工作制度、设计生产能力及服务年限103.1矿井工作

13、制度103.2矿井设计生产能力及服务年限103.2.1确定依据103.2.2矿井设计生产能力103.2.3矿井服务年限103.2.4井型校核114 井田开拓124.1井田开拓基本问题124.1.1井筒形式的确定124.1.2井筒位置的确定134.1.3工业场地的位置144.1.4开采水平的确定144.1.5采区的划分144.1.6矿井开拓方案比较164.1.7水平尺寸194.2矿井基本巷道204.2.1井筒324.2.2开拓巷道234.2.3井底车场及硐室255 准备方式带区准备方式285.1煤层地质特征285.1.1带区位置285.1.2带区煤层特征285.1.3煤层顶底板岩层构造情况285

14、.1.4水文地质285.1.5地质构造285.1.6地表情况285.2带区巷道布置及生产系统285.2.1带区准备方式的确定285.2.2带区巷道布置295.2.3带区生产系统305.2.4带区内巷道掘进方法315.2.5带区生产能力及采出率315.3带区车场选型计算325.3.1确定带区车场形式325.3.2带区主要硐室布置336 采煤方法346.1采煤工艺方式346.1.1带区煤层特征及地质条件346.1.2确定采煤工艺方式346.1.3回采工作面参数356.1.4采煤工作面设备选型356.1.5采煤工作面支护方式386.1.6端头支护及超前支护方式406.1.7各工艺过程注意事项416.

15、1.8回采工作面正规循环作业426.2回采巷道布置446.2.1回采巷道布置方式446.2.2回采巷道参数447 井下运输477.1概述477.1.1井下运输原始数据477.1.2井下运输系统477.2煤炭运输方式和设备的选择477.2.1煤炭运输方式的选择477.2.2带区煤炭运输设备的选型及验算487.2.3运输大巷设备选择497.3辅助运输方式和设备选择507.3.1辅助运输方式选择507.3.2辅助运输设备选择518 矿井提升538.1矿井提升概述538.2主副井提升538.2.1主井提升538.2.2副井提升569 矿井通风及安全589.1矿井通风系统的确定589.1.1矿井通风系统的基本要求589.1.2矿井通风方式的选择789.1.3矿井通风方法的选择599.1.4带区通风系统的要求609.1.5回采工作面进回风巷道的布置609.1.6工作面通风方式的确定619.2矿井风量计算619.2.1矿井风量计算