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涡北煤矿1.2 Mta新井设计含5张CAD图 煤矿 1.2 Mta 设计 CAD

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摘 要本设计包括三个部分：一般部分、专题部分和翻译部分。一般部分为涡北煤矿1.20Mt/a新井设计。涡北煤矿位于安徽省亳州市境内，东有京九铁路，西有濉阜铁路，交通便利。井田走向长度约6 km，倾向长度约3.2 km，面积约19 km2。主采煤层为8号煤层，平均倾角为20.5，平均厚度为7.37 m。井田工业储量为154.68 Mt，可采储量为115.29 Mt，矿井服务年限为54.9 a。矿井正常涌水量为250 m3/h，最大涌水量为280 m3/h。矿井绝对瓦斯涌出量为21.33 m3/min，属于低瓦斯矿井。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：立井两水平开拓上下山开采（岩石大巷），立井直接延深；方案二：立井两水平开拓上下山开采（煤层大巷)，立井直接延深；方案三：立井两水平开拓上山开采，暗斜井延深（岩石大巷）；方案四：立井两水平开拓上山开采，暗斜井延深（煤层大巷）。通过技术经济比较，最终确定方案三为最优方案。一水平标高-700 m，二水平标高-1000 m。设计首采区采用采区准备方式，工作面长度150 m，采用综采放顶煤采煤法，矿井年工作日为330 d，工作制度为“四六制”。大巷采用胶带输送机运煤，辅助运输采用矿车运输。矿井通风方式为中央并列式。专题部分题目：浅析煤矿瓦斯灾害防治技术。翻译部分题目：Why Longwall in India has not Succeeded as in other Developing Country Like China。印度的长壁采煤法为什么没有像在中国这样的发展中国家一样取得成功。关键词： 立井； 暗斜井； 采区布置； 放顶煤采煤法； 中央并列式； 沿空掘巷ABSTRACTThis design can be divided into three sections: general design, monographic study and translation of an academic paper.The general design is about a 1.20 Mt/a new underground mine design of Wobei coal mine.Wobei coal mine lies in Hozhou City, Anhui province.As Jingjiu railway runs in the west of the mine field and Suifu railway runs in the east of the mine field, the traffic is convenient.Its about 6 km on the strike and 3.2 km on the dip, with the 19 km2 total horizontal area.The minable coal seam is 8 with an average thickness of7.37 m and an average dip of 20.5.The proved reserves of this coal mine are 154.68 Mt and the minable reserves are 115.29 Mt, with a mine life of 54.9 a. The normal mine inflow is 250 m3/h and the maximum mine inflow is 280 m3/h. The mine gas emission rate is 21.33 m3/min, the mine belongs to low gas mine. Based on the geological conditions of the mine, I bring forward four available projects in technology.The first is vertical shaft development with two mining levels and the first level at -700m and the second level at -1000m and extension of blind inclined shaft; the second is vertical shaft development with two mining levels and the first level at -700m and the second level at -1000m and extension of vertical shaft; the third is vertical shaft development with two mining levels and the first level at -700m and the second level at -1000m and extension of blind inclined shaft; the last is vertical shaft development with two mining levels and the first level at -700m and the second level at -1000m and extension of new vertical shaft. The third project is the best comparing with other three projects in technology and economy.The first level is at -700 m.The second level is at -1000 m.Designed first mining district makes use of the method of the mining district preparation.The length of working face is 150 m, which uses fully-mechanized coal caving mining method. The working system is “four-six” which produces 330 d/a.Main roadway makes use of belt conveyor to transport coal resource, and mine car to be assistant transport. The type of mine ventilation system is center ventilation.The monographic study is a brief analysis of law and tecenolgy of rodway supporting of gob-side entry rataining.Gob-side entry rataining is the key technology of unlonding stress and coal and gas mining at the same time. Because of twice mining influence, high press and large deformation and long-term creep of the deep roadway, its more difficult to roadway maintenance.The paper is based on the deep gob-side entry retaining of Guqiao coalmine in Huaibei mining area. And it researches on the laws of stress evolution and failure mechanism of roadway with thick roof and thin roof and no roof by using numerical simulation and applying field test, and proposes corresponding support scheme.The translated academic paper is Numerical simulation of rock burst