城郊煤矿1.2Mta新井设计【专题留小煤柱沿空掘巷技术及可行性分析】.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。一般部分为永煤集团城郊煤矿120万t/a新井设计。全篇共分为十个部分：矿井概况及井田地质特征、井田境界及储量、矿井工作制度、设计生产能力、井田开拓、矿井基本巷道、采煤方法、采区巷道布置、井下运输、矿井提升、矿井通风与安全和矿井主要经济技术指标。城郊矿位于河南省永城市境内。井田南北走向平均长3.34km，东西平均宽5.09km，面积约19.67km2。 井田内可采煤层为二2、三2煤，其赋存稳定，厚度平均为2.98 m和2.95 m，倾角平均8，为缓倾斜煤层。井田内工业储量为1.517亿t，可采储量为0.9636亿t。矿井平均涌水量为1802

2、50 m3/d，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。城郊煤矿年设计生产能力为120万t/a，服务年限为57.36年。采用立井开拓，单水平布置。工作制度为“四六”制。第一水平标高为850m。矿井采用倾斜长壁综合机械化采煤法，一次采全高。矿井布置一个综采工作面，面长220m。煤炭通过胶带输送机运输。矿井通风方式为中央并列式。专题部分：专题题目为“留小煤柱沿空掘巷技术及其可行性分析”。主要分析了沿空掘巷留小煤柱的现状，作用，存在问题及解决办法，并从受力等方面对其进行了分析。翻译部分：翻译了一篇岩石力学与采矿科技国

3、外杂志上的论文，题目为“用有限差分方法预测由水平和倾斜煤层开采引起的沉陷问题” 。关键词：立井；带区；电机车；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 outli

4、ne of the mine, the mine field geology, the boundary 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

5、Yongcheng in Henan province. The boundary of the mine field runs 5.09km from north to south and 3.34km from west to east on average. The total plane area of the mine is about 19.67km2. There is only one exploring layer-number two. Its average thickness of the seam is 2.98m and its stable and flatly

6、inclined. Its dip angle is 8 degree on average. The industry reserves of the mine field are 151.7 million tons and the useable reserves are 96.36 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 th

7、e self-combustion tendency. The productive capacity of Chengjiao Mine is 1.2 million tons per year，and the service life is 57.36years. 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 -850m. The comprehensive mech

8、anized longwall 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 220m, and the designed productive capacity of the face is 1.2 million tons per year. Coal is transported by belt conve

9、yer and the diagonal 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 an

10、alyse it from stress meanwhile. The translation part is an article from international journal of Rock Mechanics and Mining Science, titled “FDM predictive methodology for subsidence due to flat and inclined coal seam mining”.Keywords：shaft ; strip district; trackless transport; centralized juxtapose

11、 ventilation目 录一般部分摘 要7ABSTRACT8目 录11矿区概述及井田地质特征11.1矿区概述11.1.1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21.2.3煤质21.2.4水文地质特征21.2.5其它开采地质条件42 井田境界与储量52.1井田境界52.2矿井工业储量计算52.2.1储量计算依据52.2.2矿井工业储量52.3矿井可采储量62.3.1安全煤柱留设原则62.3.2矿井永久保护煤柱损失量62.3.3矿井可采储量83 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

12、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93.2.2矿设计生产能力93.2.3矿井服务年限93.2.4井型校核104 井田开拓114.1井田开拓的基本问题114.1.1确定井筒形式、数目、位置及坐标114.1.2工业场地的位置124.1.3开采水平的确定124.1.4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134.1.6方案比较134.2 矿井基本巷道174.2.1井筒174.2.2井底车场及硐室214.2.3主要开拓巷道225带区巷道布置265.1煤层地质特征265.1.1带区位置及范围265.1.2采区煤层特征265.1.3地质构造2

13、65.1.4顶底板特性265.1.5水文地质265.1.6地表情况275.2带区巷道布置及生产系统275.2.1带区准备方式的确定275.2.2生产系统275.2.3带区内巷道掘进285.2.4带区生产能力及采出率285.3带区车场及主要硐室305.3.1带区下部车场设计305.3.2带区主要硐室306 采煤方法316.1带区工艺方式316.1.1带区煤层特征及地质条件316.1.2确定采煤工艺方式316.1.3回采工作面参数316.1.4回采工艺及工作面设备选型326.2工作面采煤、装煤、运煤方式及设备选型336.2.1设备选型原则和装备标准336.2.2工作面设备选型336.2.3采煤工作

14、面支护方式386.2.4、顶板管理396.2.5、移架方式396.2.6、推移刮板输送机396.2.7、端头支护及超前支护方式396.2.8、端头支架支护及要求396.2.9、超前支护406.2.10、各工艺过程注意事项406.2.11、回采工作面正规循环作业426.3回采巷道布置436.3.1回采巷道布置方式436.3.2回采巷道参数437 井下运输487.1概述487.1.1井下运输设计的原始条件与数据487.1.2运输距离和货载量487.1.3井下运输系统487.2带区运输设备选型497.2.1设备选型原则497.2.2带区运输设备的选型及能力验算497.3大巷运输设备选型517.3.1

15、运煤设备517.3.2辅助运输设备选择528 矿井提升548.1矿井提升概述548.2主副井提升548.2.1主井提升548.2.2副井提升569 矿井通风及安全599.1矿井通风系统选择599.1.1矿井概况599.1.2矿井通风系统的基本要求599.1.3矿井通风方式的确定599.1.4主要通风机工作方式选择609.1.5带区通风系统的要求619.1.6工作面通风方式的选择629.1.7回采工作面进回风巷道的布置629.1.8通风构筑物639.2矿井风量计算639.2.1采煤工作面实际需要风量639.2.2掘进工作面需风量659.2.3硐室需风量679.2.4其它巷道所需风量679.2.5矿井总风量计算679.3矿井风量分配689.3.1配风的原则和方法689.3.2配风的依据689.3.3风量分配6