石嘴山二矿1.2Mta新井设计.docx

1、摘 要本设计包括三个部分：一般设计部分、专题设计部分和翻译部分。一般部分为石嘴山二矿1.2 Mt/a的新井设计。石嘴山二矿位于宁夏回族自治区北端石嘴山区近郊，行政区划属石嘴山市石嘴山区。包兰铁路从矿区西缘通过，区内有铁路专用线直达金能煤业分公司。区内公路四通八达，石中高速、109和110国道紧临矿区南部，交通十分便利。井田走向（东西）长平均约5.6 km，倾向（南北）长平均约2.7 km，井田水平面积为16.8 km2。主采煤层一层，即2号煤层，平均倾角14，平均厚度4.5 m。井田工业储量为115.61 Mt，可采储量87.92 Mt，矿井服务年限为52.3 a。井田地质条件简单。表土层平均

2、厚度38 m；矿井正常涌水量为651 m3/h，最大涌水量为977 m3/h；煤层硬度系数f=2.3，煤质牌号为焦煤；矿井瓦斯相对涌出量为0.77 m3/min，属低瓦斯矿井；煤层有自燃发火倾向，发火期36个月，煤尘具有爆炸危险性。根据井田地质条件，提出四个技术上可行开拓方案。方案一：立井两水平暗斜井延伸；方案二：立井两水平直接延伸；方案三：斜井两水平暗斜井延伸；方案四：斜井两水平暗立井延伸。通过技术经济比较，最终确定方案一为最优方案。将主采煤层划分为两个水平，一水平标高+700m，二水平标高+400m。井田东南部为一水平服务范围，井田西北部为二水平服务范围。设计首采区采用采区准备方式，工作面

3、长度160 m，采用一次采全高采煤法，全部跨落法处理采空区。矿井采用“三八”制作业，两班生产，一班检修。生产班每班3个循环，日进6个循环，循环进尺0.6 m，日产量4833 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。主井装备一套12 t双箕斗和一套12 t单箕斗带平衡锤提煤，副井装备一对3 t矿车双层单车罐笼带平衡锤担负辅助运输任务。矿井采用中央并列式通风。通风容易时期矿井总需风量8123 m3/min，矿井通风总阻力2145 Pa，风阻0.117 Ns2/m8，等积孔3.48 m2，矿井通风容易。矿井通风困难时期矿井总风量8123 m3/min，矿井通风总阻力2937

4、Pa，风阻0.16 Ns2/m8，等积孔2.97 m2，矿井通风容易。设计矿井的吨煤成本70 元/t。专题部分题目是煤与瓦斯突出的防治措施。采用“四位一体”综合防突措施。翻译部分是一篇关于利用数值模拟软件ANSYS，模拟煤炭开采引起的底板断层活化规律。英文原文题目为：Numerical Simulation of Coal Floor Fault Activation Influenced by Mining。关键词：暗斜井；两水平；大采高；煤与瓦斯突出XABSTRACTThis design can be divided into three sections: general design

5、, monographic study and translation of an academic paper.The general design is about a 1.2 Mt/a new underground mine design of Shizuishan coal mine. The Shizuishan mine located in the Ningxia Hui Autonomous Region, the northern end of Shizuishan outskirts of administrative divisions Shizuishan are.

6、Baotou-Lanzhou railway from the mining area western margin by the district special railway line directly to the gold Coal Branch. District roads extending in all directions, stone in the high-speed, 109 and 110 State Road, close to the mining area south of the traffic is very convenient. Its about 5

7、.6 km on the strike and 2.7 km on the dip,with the 16.8 km2 total horizontal area. The minable coal seam of this mine is only 2 with an average thickness of 4.5 m and an average dip of 14. The proved reserves of this coal mine are 115.61 Mt and the minable reserves are 87.92 Mt, with a mine life of

8、52.3 a.The geological condition of the mine is relatively simple. Topsoil average thickness of 38 m.The normal mine inflow is 651 m3/h and the maximum mine inflow is 977 m3/h. Seam hardness coefficient f = 2.3, coal grade coking coal; relatively Emission of mine gas 0.77 m3/min, is a low-gas coal mi

9、ne. Coal seam spontaneous combustion tendency combustion period of 3 to 6 months, the dust explosion hazard.Based on the geological condition of the mine, I bring forward four available project in technology. The first is vertical shaft two horizontal dark inclined shaft extension; The second is ver

10、tical shaft two horizontal direct extension; the third is inclined shaft two horizontal dark inclined shaft extension; the last is inclined shaft two horizontal dark vertical shaft extension. The first project is the best comparing with other three project in technology and economy. The first level

11、is at +700 m, The second level is at +400 m. The field southeast for a horizontal range of services, and field northwest of the two levels of service range.Designed first mining district makes use of the method of preparation in mining area, the length of working face is 160 m, which uses fully-mech

12、anized coal mining technology, and fully caving method to deal with goaf. The working system is “three-eight”,with two teams mining, and the other overhauling. Every mining team makes three working cycle, with six working cycle everyday. Advance of working cycle is 0.6 m, and quantity of 4833 ton co

13、al is makedeveryday.Main roadway makes use of belt conveyor to transport coal resource, and mine car to be assistant transport. Main shaft makes use of skip to transport coal resource, when subsidiary shaft makes use of cage to be assistant transport. In the prophase of mining the mine makes use of

14、centralized ventilation method,when in the evening of mining the mine makes use of areas ventilation method. At the easy time of mine ventilation, the total air quantity is 8123 m3 per minute, the total mine ventilation resistance is 2145 Pa, the coefficient of resistance is 0.117 Ns2/m8, equivalent

15、 orifice is 3.48 m2. At the difficult time of mine ventilation, the total air quantity is about 8123 m3 per minute, the total mine ventilation resistance is 2937 Pa, the coefficient of resistance is 0.16 Ns2/m8, equivalent orifice is 2.97 m2. The cost of the designed mine is 110 yuan per ton.The mon

16、ographic study of the topic of coal and gas outburst prevention and control measures. Four in One Integrated Control Measures.The translated academic paper is an article about the use of numerical simulation software ANSYS, the simulation of the floor fault caused by coal mining activation rule. English text entitled: “Numerical Simulation of Coal Floor Fault Activation Influenced by Mining.”Keywords：Dark Inclined shaft; two horizontal; large m