毕业论文-年产180万吨姚桥煤矿新井设计.docxVIP

姚桥煤矿1.8 Mt/a新井设计 摘 要 姚桥煤矿位于江苏省徐州市境内，距江苏省徐州市西北大约82km，距沛县县城约17km。区内铁路交通方便。井田走向（东西）长平均约6.43 km，倾向（南北）长平均约3.43km，井田水平面积为20.80 km2。主采煤层一层，即7号煤层，平均倾角8.7°，厚约7.64 m。井田工业储量为260.04 Mt，可采储量181.68 Mt，矿井服务年限为72.2 a。井田地质条件简单。矿井正常涌水量为320 m3/h，最大涌水量为340 m3/h；煤层硬度系数f=2.3，煤质牌号为气煤44；矿井绝对瓦斯涌出量为0.77 m3/min，属低瓦斯矿井；煤层有自燃发火倾向，发火期3~6个月。煤尘具有爆炸危险性。 根据井田地质条件，最终确定方案：将主采煤层划分为两个水平立井开采，一水平标高-650 m，二水平标高-950 m。矿井采用中央并列式通风。 设计首采区采用采区准备方式，工作面长度200 m，采用综采放顶煤采煤法。矿井采用“三八”制作业，两班生产，一班检修。生产班每班2个循环，检修班1个循环，日进5个循环，循环进尺0.686 m，日产量6007.63 t。 大巷采用带式输送机运煤，辅助运输采用1.5 t固定箱式矿车。主井装备两套16 t箕斗带平衡锤提煤，副井装备一对3 t矿车双层四车罐笼带平衡锤担负辅助运输任务。 关键词：立井；综采放顶煤；单巷掘进；中央并列式  ABSTRACT This design includes three parts: general design section, design project section and translation section. General section is the 1.8 Mt/a new well design of Yaoqiao ore. Yaoqiao coal mine is located in Jiangsu Xuzhou city, it is about 82 km from northwest of Jiangsu Xuzhou, and about 17 km from the county of Peixian. The railway traffic is convenient. Seam strike (from east to west) is average 6.43 km, the other side is about 3.43 km, the horizontal area is 20.80 km2. The principal coal seam is the first seam, or NO.7 coal seam with average 8.7 ° angle, about 7.64 m thick. The coal field wells industrial reserves is about 260.04 Mt and recoverable reserves is 181.68 Mt.The mine field can service 72.2 years and its geological conditions is simple. Normal water inflow is 320 m3 / h, and the maximal is 340 m3 / h, coefficient of hardness is 2.3 .The rank of the coal is long flame coal 44. The absolute emission quantity of gas is 0.77 m3 / min, belong to low gas mine.It has the tendency of spontaneous combustion and dust explosion risk. According to the field geological conditions,the final plan is : divide the main mine field into two shaft. One horizontal elevation is -650 m,the other one is -950m. The mine pit uses central compound -like to ventilate The first mining area use stand-by mode with the length of 200 m. Longwall face roof coal drawing method is c