晋煤集团古书院矿2.4mta新井设计毕业设计说明书

设计总说明

一般部分针对山西古书院矿井进行了井型为2.4Mt/a的新井设计。古书院矿井位于安山西晋城市境内，面积约24km2。主采煤层为3#、15#煤层，3#煤层平均倾角4°，平均厚度4.0m；15#煤层平均倾角4°，平均厚度2.0m。井田工业储量为214.36Mt，可采储量166.43Mt，矿井服务年限为53.34a。矿井正常涌水量为333.3m3/h，最大涌水量为375m3/h；矿井相对瓦斯涌出量为5m3/t，属低瓦斯矿井。

根据井田地质条件，设计采用双斜井单水平开拓方式，井田采用全带区式布置方式，共划分为八个带区，轨道大巷布置在岩层中、胶带机大巷都布置在岩层中。矿井通风方式采用两翼对角式通风。

针对南一带区进行了带区准备方式设计，进行了运煤、通风、运料、排矸、供电系统设计。

针对3101工作面进行了采煤工艺设计。该工作面煤层平均厚度为4.00m，平均倾角4°，直接顶为泥岩，老顶为砂岩。工作面采用一次采全高综采采煤法。采用双滚筒采煤机割煤，往返一次割两刀。采用“四六制”工作制度，截深0.8m，每天六个循环，循环进尺4.8m，月推进度144m。

大巷采用胶带输送机运煤，辅助运输采用无轨胶轮车。

专题部分题目为《煤矿顶板事故浅析》，通过对中国煤矿顶板事故的统计、煤矿顶板事故分类与煤矿工作面顶板事故规律分析，研究归纳出三个方面的煤矿顶板事故致因因素。最后，从提高支护技术水平、加大对职工培训教育力度、建立健全内部管理机制、完善监督监管体系四个方面提出了预防煤矿顶板事故对策建议。

关键词：煤矿安全；煤矿顶板事故；事故致因；对策建议。

The Brief Introduction of the Design

The general design is a 2.4 Mt/a new underground mine design of Gushuyuan coal mine. Gushuyuan coal mine is located in Jincheng, Shanxi province. It has a 24 km2 total horizontal area. The minable coal seam is 15# with an average thickness of 6.0 m and an average dip of 4°. The proved reserves of this coal mine are 214.36 Mt and the minable reserves are 166.43 Mt, with a mine life of53.34 year. The normal mine inflow is 333 m3/h and the maximum mine inflow is 375 m3/h. The mine gas emission rate is 5 m3/t which can be recognized as low gas mine.

Based on the geological condition of the mine, this design uses a duel-vertical shaft single-level development method, and full strip preparation ,which divided into 6 bands and track roadway, belt conveyor roadway and return airway are all coal roadways, arranged in the 3# coal seam. mine ventilation method use two diagonal wings ventilation.

The design applies strip preparation against the first band of SOUTH ONE. It conducted coal conveyance, ventilation, gangue conveyance and electricity designing.

The design conducted coal mining technology design against the 3101 face. The coal seam average thickness of this working face is 4.0 m and the average dip is 4°, the immediate roof is mud stone and the main roof is sand stone. The working face applies fully mechanized longwall sublevel caving method, and uses double drum shearer cutting coal which cuts twice each working cycle. "Four-six" working system has been used in this design and the

depth-web is 0.8m with six working cycles per day, and the advance of a working cycle is 4.8m and the advance is 144 m per month.

Main roadway makes use of belt conveyor to transport coal resource, and no track glue wheel car to be assistant transport.

The monographic study for the coal mine roof accident of ", through the analysis of China coal mine roof accident statistics, accident of coal mine roof classification and coal mine work face roof accident rules, the study concluded that three aspects of coal mine roof accident causing factors. Finally, it puts forward the countermeasures and suggestions to prevent coal mine accidents from four aspects of improving the level of support technology, increasing the training and education of workers, establishing and improving the internal management mechanism and improving the supervision and control system.

Key words: coal mine safety; coal mine roof accident; accident cause; countermeasure and suggestion.