城郊煤矿1.5Mta新井设计【专题煤矿瓦斯事故预防技术研究】.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。一般部分为城郊煤矿1.5Mt/a新井设计。城郊井田位于河南省永城市境内，区内交通十分便利。井田东西走向长约5.4km，南北倾向宽约7.2km，井田面积约38.6km2。井田内可采煤层共有2层，主采煤层为二2煤。井田内二2煤倾角在47之间，平均厚度2.95m。矿井工业储量为128.2Mt，可采储量为127.1Mt，设计服务年限60.5a。矿井正常涌水量为180m3/h，最大涌水量为220m3/h。矿井相对瓦斯涌出量为1.732m3/t，绝对瓦斯涌出量为2.53m3/min，属低瓦斯矿井。煤层无自然发火倾向，且煤尘无爆炸危险性。根据井田地质条

2、件，设计开拓方案：采用立井单水平开拓，井筒位于-700水平。整个井田划分为2个带区和2个盘区。采用中央并列式通风。矿井首采区采用盘区式准备方式，工作面设计长度260m，采用综合机械化采煤工艺。矿井年工作日为330d，昼夜净提升时间为16h。矿井采用“三八”制工作制度，两班生产，一班检修。生产班每班完成4个采煤循环。循环进尺为0.8m，日产量为4545.45t。矿井煤炭采用胶带输送机运输，辅助运输采用蓄电池式电机车牵引固定箱式矿车。主井采用一两对12t底卸式箕斗提煤，副井井筒内装备1.67m宽罐笼和1.02m窄罐笼运送物料和升降人员。专题部分题目为：煤矿瓦斯事故预防技术研究。翻译部分题目为：Th

3、e relation between in situ and laboratory rockproperties used in numerical modeling关键词：立井；单水平；盘区；综合机械化采煤；中央并列式通风ABSTRACTThis design includes three parts: the general design, the monographic study and the translation.The general design is about a 1.5 Mt/a new underground mine design of ChengjiaoCoal

4、Mine. Chengjiao Coal Mine lies in the Yongcheng City, Henan province. The transportation in the mining area is very convenient. Its about 5.4 km on the strike and 7.2 km on the dip, with the 38.6 km2 total area. There are 2 minable coal seam. The main aquifer coal seam is 2-2 coal seam with an avera

5、ge thickness of 2.95 m, and the dip of 2-2 coal seam is 47. The proved reserves of this coal mine are 128.2 Mt and the minable reserves are 127.1 Mt, with a mine life of 50.6 a. The normal mine inflow is 180 m3/h and the maximum mine inflow is 220 m3/h. The mine relative gas emission quantity is 1.7

6、32 m3/t, and the absolute gas emission quantity is 2.53 m3/min. Thus, it is a low gas mine. The coal seam has no spontaneous combustion tendency, and the coal dust has no explosion hazard.Based on the geological conditions of the mine, the best is vertical shaft development with one mining levels, T

7、he level should be located at the lever of -700m .The mine field is divided into two strip districts and two mining district. The type of mine ventilation is the centralized juxtapose ventilation . Designed first mining district makes use of the method of the mining district preparation. The design

8、length of working face is 260 m, which uses fully mechanized mining technology. The working days in one year are 330. Everyday it takes 16 hours in lifting the coal. The operation mode in the mine is “three-eight” with two teams mining and the other overhauling. Every mining team makes three working

9、 cycle, and the overhauling team makes one working cycle. So everyday there are 8 working cycles. The advance of a working cycle is 0.8 m, and the quantity of 4545.45 ton coal is maked everyday.Main roadway makes use of belt conveyor to transport coal resource, and mine car to be assistant transport

10、. The main shaft uses a 12 t skips to lift coal and the auxiliary shaft uses a wide 1.67m and 1.02m four-car double-deck cage to lift material and personnel transportation.Special section entitled: coal mine gas prevention technology.Translated part of the title is: The relation between in situ and

11、laboratory rockproperties used in numerical modelingKeywords: shaft; one mining levels; mining district; fully mechanized mining; centralized juxtapose ventilation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矿区地理位置与交通11.1.2矿区气候条件11.1.3水文条件21.1.4自然地震21.2 井田地质特征21.2.1井田地质特征21.2.2井田地质构造41.2.3 水文地质51.3煤层特征61.3.1煤层埋

12、藏条件61.3.2煤层围岩性质71.3.3煤的特征71.3.4其它开采地质条件82 井田境界与储量92.1井田境界92.1.1井田范围92.1.2开采界限92.1.3井田尺寸92.2矿井工业储量计算92.2.1储量计算依据92.2.2矿井工业储量102.3矿井可采储量102.3.1安全煤柱留设原则102.3.2矿井永久保护煤柱损失量112.3.3矿井可采储量123 矿井工作制度、设计生产能力及服务年限143.1矿井工作制度143.2矿井设计生产能力及服务年限143.2.1矿井设计生产能力及服务年限确定依据143.2.2矿井设计生产能力143.2.3矿井服务年限143.2.4井型校核154 井田

13、开拓164.1 井田开拓的基本问题164.1.1确定井筒形式、数目、位置及坐标164.1.2工业场地的位置184.1.3井底车场和运输大巷的布置184.1.4矿井开拓方案184.1.5开采顺序194.1.6方案比较194.2 矿井基本巷道244.2.1井筒244.2.2井底车场及硐室244.2.3主要开拓巷道264.2.4巷道支护265 准备方式盘区巷道布置325.1煤层地质特征325.1.1盘区位置325.1.2盘区煤层特征325.1.3煤层顶底板岩石构造情况325.1.4水文地质325.1.5地质构造325.1.6地表情况325.2盘区巷道布置及生产系统325.2.1盘区准备方式的确定32

14、5.2.2盘区巷道布置335.2.3盘区生产系统335.2.4盘区生产能力及采出率355.3盘区车场选型计算365.3.1盘区车场的形式365.3.2盘区车场的调车方式376 采煤方法386.1采煤工艺方式386.1.1盘区煤层特征及地质条件386.1.2确定采煤工艺方式386.1.3回采工作面长度的确定386.1.4工作面的推进方向和推进度386.1.5回采工艺及工作面设备选型396.1.6采煤工作面支护方式416.1.7端头支护及超前支护方式436.1.8各工艺过程注意事项446.1.9回采工作面正规循环作业456.2回采巷道布置476.2.1回采巷道布置方式476.2.2回采巷道参数47

15、7 井下运输507.1概述507.1.1井下运输设计的原始条件与数据507.1.2运输距离和货载量507.1.3井下运输系统507.2盘区运输设备选型517.2.1设备选型原则517.2.2盘区运输设备的选型及能力验算517.3大巷运输设备选型537.3.1运煤设备537.3.2辅助运输设备选择538 矿井提升558.1矿井提升概述558.2主副井提升558.2.1主井提升558.2.2副井提升579 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矿井通风系统的确定599.1.3盘区通风系统的确定619.1.4矿井通风容易与困难时期的确定629.2盘区及全矿所需风量639.2.1采煤工作面实际需风量639.2.2掘进工作面实际需风量669.2.3硐室需风量679.2.4其它巷道需风量679.2.5矿井所需总风量679.2.6风量分配及风速验算689.3全矿通风阻力的计算689.3.1矿井通风总阻