沁新煤矿1.5Mta新井设计.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。一般部分为沁新煤矿1.5Mt/a新井设计。沁新煤矿位于山西省沁源县西部，区内交通十分便利。井田东西走向长3.5km，南北倾向宽5.4km，井田面积约18km2。井田内可采煤层共有5层，主采煤层为2煤。井田内2煤倾角在312之间，平均厚度3.04m。矿井工业储量为214.93Mt，可采储量为168.50Mt，设计服务年限86.41a。矿井正常涌水量为900m3/d，最大涌水量为1600m3/d。矿井相对瓦斯涌出量为1.732m3/t，绝对瓦斯涌出量为17.09m3/min，属低瓦斯矿井。煤层无自然发火倾向，煤尘无爆炸危险性。根据井田地质条件

2、，提出四个技术上可行的开拓方案。方案一：立井单水平开拓（岩层大巷）；方案二：立井单水平开拓（煤层大巷）；方案三：斜井单水平开拓（岩层大巷）；方案四：斜井单水平开拓（煤层大巷）。通过粗略和详细技术经济比较，最终确定方案四为最优方案。水平标高+950m整个井田划分为3个带区。矿井生产采用中央并列式通风方式。矿井采用带区式准备方式，工作面设计长度220m，采用综合机械化一次采全高采煤工艺。矿井年工作日为330d，昼夜净提升时间为16h。矿井采用“四六”制工作制度，三班生产，一班检修。生产班每班完成3个采煤循环。循环进尺为0.6m，日产量为4824.51t。矿井煤炭采用胶带输送机运输，辅助运输采用单轨

3、吊。主斜井采用1400mm胶带输送机，副斜井采用3.5m双滚筒绞车和一套慢速绞车运送物料和升降人员。专题部分题目为：锚网支护巷道顶板事故类型分析。主要分析了锚网支护的理论以及巷道顶板事故的原因，并对巷道顶板事故进行了分类，提出了相应的控制技术措施。翻译部分主要内容是关于巷道掘进巷道掘进过程中粉尘影响因素的数值模拟研究，英文题目为：Numerical simulation of the factors inuencing dust in drilling tunnels: Its application。关键词：斜井；单水平；带区；综合机械化放顶煤；中央并列式通风154ABSTRACTThis

4、design includes three parts: the general design, the monographic study and the translation.The general design is about a 2.4 Mt/a new underground 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 an

5、d 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 average 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 ar

6、e 385.7 Mt and the minable reserves are 285.64 Mt, with a mine life of 85 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 0.5 m3/t, and the absolute gas emission quantity is 2.53 m3/min. Thus, it is a low gas mine. The coal se

7、am has no spontaneous combustion tendency, and the coal dust has no explosion hazard.Based on the geological conditions of the mine, I bring 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 t

8、unnel; the second is vertical shaft development with two mining levels, the deep extension of crosscut and blind slope, and the rock tunnel; 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

9、with two mining levels, the deep extension of blind shaft, and the coal tunnel. The second project is the best comparing with other three projects 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 m

10、ine ventilation is Sub-regional ventilation, and north air shaft , east air shaft and west air shaft.Designed first mining district makes use of the method of the mining district preparation. The design length of working face is 245m, which uses the comprehensive mechanized longwall caving method al

11、ong 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 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

12、. 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 transport 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 wid

13、e 1.5 t four-car double-deck cage to lift material and personnel transportation.The monographic study entitled “Control principles and techniques 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

14、 the stability of the small structures , elaborated along the goaf surrounding rock mass , and small structural stability principle and the principle remain located along the the goaf narrow coal pillar width influence factors and design method provides a theoretical basis for the bolt support along

15、 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 levels; crosscut and blind slope; strip district; fully mechanized min

16、ing; Sub-regional ventilation; excavate roadway along golf目 录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11.1.2 矿区气候条件11.1.3 矿区的水文情况11.2 井田地质特征31.2.1 煤系地层31.3 煤层特征71.3.1 可采煤层71.3.2 煤的特征81.3.3 瓦斯，煤尘及自燃112 井田境界与储量122.1井田境界122.2 矿井储量计算122.2.1构造类型122.2.2 矿井工业储量122.2.3工业储量计算122.2.4矿井可采储量142.2.5工业广场煤柱153 矿井工作制度、设计生产能力及服务年限173.1 矿井工作