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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2.212
2、0108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
3、量。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
4、为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
5、into 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
6、safety, 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 a
7、bout 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 mecha
11、nized 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 o
13、f 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 me
14、thod 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
15、retrusive 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 win
16、d 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 and control measures, water control measures. By taking all kinds of measures to keep out the dust, fire disa
