沙埠煤矿通风安全设计毕业设计.doc
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1、设计总说明本设计为兖州矿务局沙埠矿120万吨新井设计,全篇共分为以下几个部分:矿井概括及井田地质特征、井田境界及储量、矿井工作制度和设计生产能力及服务年限、井田开拓、采区巷道布置、采煤方法、井下运输、矿井提升、矿井通风与安全、矿井主要经济技术指标和矿井安全技术措施。沙埠矿位于山东省兖州市境内。矿井东西长约为8900m,南北宽约为3100m,面积为27.59km2。含远景开发区2.34km2 。井田内的主要可采煤层为5煤、7煤,该煤层赋存稳定,5煤层煤层厚度为3.65m,7煤层煤层厚度为1.93m,平均厚度2.79米。倾角平均为13,为近水平中厚煤层。煤层间距为51.3m。井田储量为2.2120
2、108吨,井田内工业储量2.0378108吨,可采储量1.5048108吨。矿井平均涌水量为240m3/h,绝对瓦斯涌出量为11.25m3/min,相对瓦斯涌出量2.97 m3/t,属于低瓦斯矿井,有自然发火现象。沙埠矿年设计生产能力120万t/年,服务年限89.8年。第一水平服务年限为30年。采用立井而上山开拓(暗斜井延伸),第一水平标高-325m,第二水平标高-550m,第三水平标高为-775m。矿井采用单面走向长壁综合机械化采煤法。本矿井采用四六制,每班工作6 h,三班出煤,一班检修,矿井工作日为300d,每天净提升时间为16h。本矿井计划用二个采区的二个高产、高效工作面保证全矿井的产量
3、。主采煤层厚度3.65m,工作面长度143m,工作面年推进度为869m,煤容重1.4t/m3,工作面回采率95%,综采面的生产能力为:120.68万吨。煤的运输采用架线式电机车牵引3吨侧卸式矿车运输。沙埠矿可采煤层为2个煤层,采用下行式开采,先采上层煤层,再采下层煤。主要通风机采用抽出式通风,矿井通风方式为两翼对角式通风。采煤工作面为后退式开采,采用上行式通风,为U型后退式通风。矿井所需总风量为149.71m3/s。通风容易时期通风阻力为1145.254Pa,通风困难时期通风阻力为1592.976Pa。通风机风量为86.5m3/s,通风容易时期通风机风压为1380Pa,通风困难时期通风机风压为
4、2000Pa。选定通风机型号为对旋式主通风机BD22。电费为1.78元/t。矿井安全技术措施包括:防治粉尘措施、防治瓦斯措施、防治火措施、防治水措施。通过各项措施,对粉尘、火灾、水灾和矿井瓦斯进行防治,大大提高了矿井开采的安全性。关键词:井田地质特征;井田开拓;采煤方法;矿井通风与安全;矿井安全技术措施。ABSTRACTThis is a new design of Shabu Mine in Yanzhou Coal Department which will have a production of 1.2millon tons. The whole design is divided i
5、nto the following parts: the outline of the mine and its geological characters, field boundary and reserves, the mine working system, the designed productive capacity and service life, mine exploitation, panel design, mining method, transportation of underground, mine lifting, mine ventilation and s
6、afety, the economic and technologic index of the mine and the safe measures of the mine field. The Shabu mine filed is located in Yanzhou city of Shandong province. The boundary of the mine filed runs 8.9 km from west to east and 3.1km from north to south on average. The total area of the mine is ab
7、out 27.59km2.The area of vision development zone is 2.34 km2. There are two main available seams: coal seam5 and coal seam7, where the occurrence is steady. The thickness of coal seam 5 is 3.65m, and the thickness of coal seam7 is 1.93m. The average thickness of the two coal seams is 2.79m. It is a
8、sub-horizontal medium-thickness coal seam with the average angle of inclination 13 degree. The distance of two mine seams is 51.3m. The reserves of the mine are 221.20 million tons, and the industry reserves of the mine filed are 203.78million tons with the exploitable reserves 150.48 million tons.
9、The average water yield of the mine is 240m3/h. The absolute gas emission rate is 11.25m3/min and the relative gas emission rate is 2.97 m3/t, which means the coal mine is a low gas mine. The coal seams have the danger of explosion and phenomenon of spontaneous combustion.The productive capacity of
10、Shabu mine is 1.2 million tons per year, and its service life is 89.8 years. The service life of the first level is 20 years. There are three levels in the mine. The fist development level is located at the level of -325m, the second is 550m, the third is -775m.The coal mining method is fully mechan
11、ized mining to the strike with sublevel caving in inclined coal seam.This coal mine adopt the 4 and 6 system, which means every shift is 6 hours, three shifts responsible for the coal production, one shift responsible for the maintenance. Colliery working day is 300 days and the net production time
12、is 18 hours. This coal mine plan to use two high-yield and efficient working faces in two mining area to ensure the production of the whole mine. The main extracting seam thickness is 3.65 meters, the length of working face 143 and the length of working face per year is 869 meters. The capability of
13、 the mine is 1.4t /, which has a 95 percent of coefficient of recovery and the production capability of coal mining face is 1.2068 million tons. Coal is transported by the granby car which is pulled by trolley locomotive with a capacity of 3 tons.Shabu mine has two commercial beds. It adopts the met
14、hod of descending coal-mining which means mining from the upper bed first and then the lower bed. The main ventilator adopts the exhaust ventilation and the ventilation method of the mine is diagonal ventilation. The coal face is retreat mining which adopts ascending ventilation and is the U-shape r
15、etrusive ventilation. The total air quantity of the coal mine is 149.71m3/s. When ventilation is good, the ventilation resistance is 1145.254Pa, while when ventilation is bad, the ventilation resistance is 1592.976Pa. The air quantity of the ventilator is 86.5m3/s. When ventilation is good, the wind
16、 pressure of ventilator is 1380Pa, while when ventilation is bad, the wind pressure is 2000Pa. The designed ventilator type is counter rotating fan BD22 and the energy charge is1.79 yuan/t.The technical safety measures of the mine include: dust control measures, gas control measures, fire prevention
17、 and control measures, water control measures. By taking all kinds of measures to keep out the dust, fire disaster, flood and the mine gas, the safety of mining has been greatly improved. Keywords: geological characters of the mine;mine extraction;mining method; ventilation and safety;technical safe
18、ty measures of the mine 前 言毕业设计是学生毕业前最后一个教学环节,是培养学生系统的总结和运用所学的理论知识、实践经验、分析和解决实际问题的有效手段。(1)本毕业设计是在完成了各类课程设计及实习报告的基础上,结合安全工程专业的特点,综合运用所学的安全技术知识来解决生产实际问题,具有实际意义和教学意义。(2)本毕业设计将系统地阐述实习矿井的开拓开采、矿井通风与安全等工程技术及相关的措施,并对实习矿井的原始地质条件适当变更和简化,做出新井设计,在条件允许时,对矿井进行深度延伸设计,其中重点在于矿井通风设计及相关安全技术措施的制订。(3)本毕业设计将合理的确定矿井开拓开采系统
19、,再经过技术经济比较,合理选择通风系统。进行矿井风量和通风阻力计算,在通风网络解算的基础上,确定矿井不同生产时期的主要通风参数,选择主要通风机及其配套设备。对矿井通风系统进行简明扼要的评价。并针对矿井存在的隐患,提出相应的安全技术措施。总之,要求设计数据真实可靠、符合国家政策和我国的国情。目录1.井田概况及地质条件11.1 井田概况11.1.1 地理条件11.1.2 气候条件11.1.3矿区电源21.1.4生产原料和建设材料21.2 井田地质21.2.1 地质构造21.2.2 水文地质21.3 煤层特征31.3.1煤层的结构、厚度和一般特征31.3.2煤类、煤质及用途51.3.3瓦斯和煤尘52
20、.井田开拓62.1 井田再划分62.1.1 井田范围62.1.2矿井储量62.1.3 工业储量的确定72.1.4 永久煤柱煤量72.1.5 矿井可采储量计算102.1.6 矿井设计生产能力及服务年限102.2 井筒数目位置的确定及装备122.2.1 井筒数目位置的确定122.2.2 井筒断面设计122.2.3 确定工业广场及井口位置152.3 主要开拓巷道及井底车场172.3.1 主要开拓巷道172.3.2 井底车场192.4 开拓方案比较212.4.1 方案技术比较212.4.2综合比较233采煤方法及采区巷道布置243.1 采煤方法选择243.1.1采煤方法选择243.1.2回采工作面长度
21、和采高243.1.3采场支护方式243.1.4运输方式253.1.5采空区处理253.2采区巷道布置253.2.1 确定采区走向长度253.2.2 煤柱尺寸的确定253.2.3 确定区段斜长和区段数目263.2.4 采区上下山的布置263.2.5 区段平巷的布置273.2.6 联络巷道的布置273.3采区车场选择273.3.1采区上部车场273.3.2采区中部车场273.3.3采区下部车场283.4.采区主要硐室布置293.5 采区采掘计划303.5.1采区采掘303.5.2 确定采区生产能力333.5.3 计算采区回采率343.6 矿井生产系统344.矿井通风设计364.1 矿井通风系统的选
22、择364.1.1 选择矿井通风系统364.1.2 选择矿井主要通风机的工作方法374.1.3 选择矿井通风方式384.2 全矿所需风量的计算及其分配434.2.1 矿井风量计算原则434.2.2 矿井风量计算方法434.3 全矿通风阻力计算494.3.1 矿井通风总阻力计算原则494.3.2 矿井通风阻力计算494.3.3 矿井总风阻及总等积孔计算514.4 矿井通风设备的选择524.4.1 矿井通风设备的要求524.4.2 选择主要通风机524.4.3选择电动机544.4.4电费计算555.矿井安全技术措施565.1防治粉尘专篇565.1.1煤矿生产中粉尘的产生565.1.2粉尘的危害565
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