城郊煤矿1.2Mta新井设计【专题浅析底板突水机理及防治】.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。一般部分为永煤集团城郊煤矿1.2Mt/a新井设计。城郊煤矿位于河南省永城市境内，交通便利。井田南北走向平均长约3.34km，东西平均宽5.61km，面积约19km2。 井田内主采煤层为二2煤，倾角平均12.5，厚度平均为4.0m，为缓倾斜煤层。井田内工业储量为113.37Mt，可采储量为86.16Mt, 设计服务年限55.23年，平均涌水量为180250 m3/h，井田中各煤层沼气含量一般小于0.5cm3/g，属低沼气矿井。各煤层均无煤尘爆炸危险。各煤层均属不自燃发火煤层；地温2930。井田为立井双水平开拓。大巷采用胶带运输机运煤，辅助运

2、输采用无极绳绞车，矿井通风方式为中央并列式。矿井年工作日为330d，工作制度为“四六制”。一般部分共包括10章：1.矿区概述及井田地质特征；2.井田境界及储量；3.矿井工作制度及设计生产能力、服务年限；4.井田开拓；5.准备方式；6.采煤方法；7.采区巷道布置8.井下运输及矿井提升；9.矿井通风与安全；10.矿井主要经济技术指标。专题部分：专题题目为“浅析底板突水机理及防治”。主要分析和揭示突水机理，开发裂隙演化的连续探测技术，以预防和治理突水，对于煤矿安全生产具有积极的意义。翻译部分：翻译了一篇岩石力学与采矿科技国外杂志上的论文，题目为“用分形的方法来确定岩体强度和变形”。关键词：立井；采区

3、；两水平；中央并列式ABSTRACTThis design contains three parts: the general，the special subject and the translation.The general part is a new design of Chengjiao Mine in Yongcheng coal & electricity combine. The whole article is divided into ten parts: the outline of the mine, the mine field geology, the bounda

4、ry and reserves, the designed productive capacity, the service life and working area, the coal transportation, the mine lifting, the ventilation and safety, and the main economical and technological index of the mine.The Chengjiao Mine field lies in Yongcheng in Henan province. The boundary of the m

5、ine field runs 3.34km from north to south and 11km from west to east on average. The total plane area of the mine is about 19km2. There is only one exploring layer-number two. Its average thickness of the seam is 4m and its stable and flatly inclined. Its dip angle is 12.5 degree on average. The ind

6、ustry reserves of the mine field are 113.37 million tons and the useable reserves are 86.16 million tons. The average inflow rate in Chengjiao mine is 180250 m3/h. It is a lower gassy mine. The coal dust doesnt have explosion hazard as well as the self-combustion tendency. The productive capacity of

7、 Chengjiao Mine is1.2 million tons per year，and the service life is 55.23 years. The work system is 4-shift with a 6-hour workday. Therere two working levels in the mine. The first development level is located at the -750m, and the second is at the level of -900m. The comprehensive mechanized longwa

8、ll caving method along the dip is used in Chengjiao Mine.There is only one working face in the mine. It is comprehensive mechanized coal face. The length of the face is 185m, and the designed productive capacity of the face is 1.2 million tons per year. Coal is transported by belt conveyer and the d

9、iagonal ventilation system is used in Chengjiao.The title of special subject is “Feasibility analysis on roadways driving along next gob with narrow pillar”. It mainly talks about current situation, effect, issue and solution in roadways driving along next gob with narrow pillar, and analyse it from

10、 stress meanwhile. The translation part is an article from international journal of Rock Mechanics and Mining Science, titled “Fractal approach to determine rock mass strength and deformation”.Keywords: mine; mining area; two levels; centralized juxtapose ventilation目 录目 录11矿区概述及井田地质特征11.1矿区概述11.1.1

11、矿区地理位置与交通11.1.2地形地貌11.1.3主要河流11.2 井田地质特征21.2.1井田地质构造21.2.2煤层特征31.2.3煤质41.2.4水文地质特征41.2.5其它开采地质条件52 井田境界与储量62.1井田境界62.2矿井工业储量计算62.2.1储量计算依据62.2.2矿井工业储量62.3矿井可采储量72.3.1安全煤柱留设原则72.3.2矿井永久保护煤柱损失量72.3.3矿井可采储量93 矿井工作制度、设计生产能力及服务年限93.1矿井工作制度93.2矿井设计生产能力及服务年限93.2.1矿井设计生产能力及服务年限确定依据103.2.2矿设计生产能力103.2.3矿井服务年

12、限103.2.4井型校核104 井田开拓124.1井田开拓的基本问题124.1.1确定井筒形式、数目、位置及坐标124.1.2工业场地的位置134.1.3开采水平的确定134.1.4运输大巷和井底车场的布置134.1.5矿井开拓延伸方案及阶段划分144.1.6方案比较144.2 矿井基本巷道184.2.1井筒184.2.2井底车场及硐室214.2.3主要开拓巷道245采区巷道布置295.1煤层地质特征295.1.1采区位置及范围295.1.2采区煤层特征295.1.3地质构造295.1.4顶底板特性295.1.5水文地质295.1.6地表情况305.2采区巷道布置及生产系统（见首采区巷道布置平

13、剖面图）305.2.1采区准备方式的确定305.2.2生产系统305.2.3采区内巷道掘进315.2.4采区生产能力及采出率315.3采区车场及主要硐室335.3.1采区下部车场设计335.3.2采区主要硐室336 采煤方法346.1采煤工艺方式346.1.1采区煤层特征及地质条件346.1.2确定采煤工艺方式346.1.3回采工作面长度的确定346.1.4回采工作面的推进方向和推进度356.1.5综采工作面的设备配套选型356.1.6回采工作面破煤、装煤方式376.1.7回采工作面支护方式396.1.8端头支护及超前支护方式406.1.8各工艺过程注意事项406.1.9回采工作面正规循环作业

14、和工作面成本416.2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467.1概述467.1.1井下运输的原始条件和数据467.1.2井下运输系统467.2煤炭运输方式和设备选择467.3大巷运输设备选型477.3.1主运输大巷设备选择477.3.2辅助运输大巷设备选择477.3.3运输设备能力验算498 矿井提升508.1矿井提升概述508.2主副井提升508.2.1主井提升508.2.2副井提升529 矿井通风及安全549.1矿井通风系统选择549.1.1矿井概况549.1.2矿井通风系统的基本要求549.1.3矿井通风方式的确定549.1.4主要通风

15、机工作方式选择559.1.5采区通风系统的要求569.1.6工作面通风方式的选择579.1.7回采工作面进回风巷道的布置579.1.8通风构筑物589.2矿井风量计算589.2.1采煤工作面实际需要风量589.2.2备用面需风量的计算609.2.3掘进工作面需风量609.2.4硐室需风量629.2.5其它巷道所需风量639.2.6矿井总风量计算639.3矿井风量分配639.3.1配风的原则和方法639.3.2配风的依据649.3.3风量分配649.4矿井通风总阻力计算659.4.1矿井通风总阻力计算原则659.4.2确定矿井通风容易和困难时期669.4.3矿井最大阻力路线669.4.4矿井通风阻力计算669.4.5矿井通风总阻力729.4.6矿井总风阻和总等积孔729.5矿井通风设备选型739.5.1矿井通风设备的要求739.5.2主要通风机的选择749