城郊煤矿2.4Mta新井设计.doc

1、任务书任务下达日期： 20XX 年 1 月 14 日毕业论文日期：20XX 年 3 月 1 日至 20XX 年 6 月 8 日毕业论文题目：城郊煤矿 2.4Mt/a 新井设计毕业论文专题题目：煤矿沿空掘巷围岩控制原理与技术毕业论文主要内容和要求：根据采矿工程专业毕业设计大纲，本毕业设计分为一般部分、专题部分和翻译部分，具体包括：1、一般部分：城郊煤矿 2.4Mt/a 新井设计，主要内容包括：矿井概况、矿井工作制度及设计生产能力、井田开拓、首采区设计、采煤方法、矿井通风系统、矿井运输提升等。2、专题部分：煤矿沿空掘巷围岩控制原理与技术。3、翻译部分：完成近 3-5 年国外期刊上与采矿或煤矿安全有

2、关的科技论文翻译一篇，要求不少于 3000 字符。院长签字：指导教师签字：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 2.4Mt/a 新井设计。城郊井田位于河南省永城市境内，覆盖城关乡、城厢乡的全部及侯岭、双桥、十八里、将口乡的一部分。南北宽约 12km，东西长约11km，勘探面积约 103km2。井田内可采煤层为二 2 煤，倾角在 415之间，平均厚度 2.95m， 首带区煤平均厚度 3.5m。矿井工业储量为 385.7Mt，可采储量为 285.64Mt，设计服务年限85a。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 0

3、.5m3/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。根据井田地质条件，提出四个技术上可行的开拓方案。方案一：立井两水平开拓，暗斜井直接延深，岩层大巷；方案二：立井两水平开拓，石门联合暗斜井延深，岩层大巷； 方案三：立井两水平开拓，暗立井延深，岩层大巷；方案四：立井两水平开拓，暗立井延深，煤层大巷。通过粗略和详细技术经济比较，最终确定方案二为最优方案。一水平标高-500m，二水平标高-860m。由于井田面积广，因此采用分区域的通风方式，分别设立北风井、东风井和西风井。矿井采用带区式准备方式，工作面设计长度 245m，采用综合机械化一次采全

4、高采煤工艺。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 7299.04t。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。主井采用两对 12t 底卸式箕斗提煤，副井采用一对 1.5t 矿车双层四车加宽罐笼运送物料和升降人员。专题部分题目为：煤矿沿空掘巷围岩控制原理与技术。主要分析了巷道上覆岩层大结构和巷道围岩锚固小结构稳定性的基础，阐述了沿空掘巷围岩大、小结构稳定的原理及沿空掘巷窄煤柱宽度的留设原则、影响因素和设计方法，为锚杆支护在沿空掘巷中的应用提供

5、了理论依据。翻译部分主要内容是锚固岩石节理三维特性的实验和数值研究，英文题目为：3D Behaviour of bolted rock joints:experimental and numerical study。关键词：立井；两水平；石门联合暗斜井；带区；综合机械化；分区域式通风；沿空掘巷ABSTRACTThis design includes three parts: the general design, the monographic study and the translation.The general design is about a 2.4 Mt/a new underg

6、round mine design of Chengjiao coal mine. Chengjiao coal mine lies in Yongcheng, Henan province. The boundary of the mine field runs 12km from north to south and 11km from west to east on average. The total plane area of the mine is about 103km2. The main minable coal seam is 2-2 coal seam with an a

7、verage thickness of 2.95 m, and the dip of coal seam is 415, and the average coal thickness of the first band is 3.5 m. The proved reserves of this coal mine are 385.7 Mt and the minable reserves are285.64 Mt, with a mine life of 85 a. The normal mine inflow is 180 m3/h and the maximum mine inflow i

8、s 220 m3/h. The mine relative gas emission quantity is 0.5 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, I bring

9、forward four available project in technology. The first is vertical shaft development with two mining levels, the deep extension of blind slope, and the rock tunnel; the second is vertical shaft development with two mining levels, the deep extension of crosscut and blind slope, and the rock tunnel;

10、the third is vertical shaft development with two mining levels, the deep extension of blind shaft, and the rock tunnel; the last is vertical shaft development with two mining levels, the deep extension of blind shaft, and the coal tunnel. The second project is the best comparing with other three pro

11、jects in technology and economy. The first mining level is -500m, the second mining level is -860m. Taking into account the wide of Idas area, so the type of mine ventilation is Sub-regional ventilation, and north air shaft , east air shaft and west air shaft.Designed first mining district makes use

12、 of the method of the mining district preparation. The design length of working face is 245m, which uses the comprehensive mechanized longwall caving method along the dip with top-coal caving. The working days in one year are 330. Everyday it takes 16 hours in lifting the coal. The operation mode in

13、 the mine is three-eight with two teams mining and the other overhauling. Every mining team makes four working cycle,. So everyday there are 8 working cycles. The advance of a working cycle is 0.8m, and the quantity of 7299.04 ton coal is maked everyday.Main roadway makes use of belt conveyor to tra

14、nsport coal resource, and mine car to be assistant transport. The main shaft uses two double 12 t skips to lift coal and the auxiliary shaft uses a twins wide 1.5 t four-car double-deck cage to lift material and personnel transportation.The monographic study entitled Control principles and technique

15、s of coal along the goaf surrounding rock. The study mainly analyse the roadway on the basis of the overburden structure and the surrounding rock to anchor the stability of the small structures , elaborated along the goaf surrounding rock mass , and small structural stability principle and the princ

16、iple remain located along the the goaf narrow coal pillar width influence factors and design methodprovides a theoretical basis for the bolt support along the goaf .The translated academic paper is about 3D Behaviour of bolted rock joints:experimental and numerical study. Its title is 3D Behaviour of bolted rock joints:experimental and numerical study.Keywords: shaft; two mining leve