渦北煤礦1.2 Mta新井設(shè)計含5張CAD圖.zip,渦北煤礦1.2,Mta新井設(shè)計含5張CAD圖,煤礦,1.2,Mta,設(shè)計,CAD 摘 要 本設(shè)計包括三個部分：一般部分、專題部分和翻譯部分。 一般部分為渦北煤礦1.20Mt/a新井設(shè)計。渦北煤礦位于安徽省亳州市境內(nèi)，東有京九鐵路，西有濉阜鐵路，交通便利。井田走向長度約6 km，傾向長度約3.2 km，面積約19 km2。主采煤層為8號煤層，平均傾角為20.5°，平均厚度為7.37 m。井田工業(yè)儲量為154.68 Mt，可采儲量為115.29 Mt，礦井服務(wù)年限為54.9 a。礦井正常涌水量為250 m3/h，最大涌水量為280 m3/h。礦井絕對瓦斯涌出量為21.33 m3/min，屬于低瓦斯礦井。 根據(jù)井田地質(zhì)條件，提出四個技術(shù)上可行的開拓方案。方案一：立井兩水平開拓上下山開采（巖石大巷），立井直接延深；方案二：立井兩水平開拓上下山開采（煤層大巷)，立井直接延深；方案三：立井兩水平開拓上山開采，暗斜井延深（巖石大巷）；方案四：立井兩水平開拓上山開采，暗斜井延深（煤層大巷）。通過技術(shù)經(jīng)濟(jì)比較，最終確定方案三為最優(yōu)方案。一水平標(biāo)高-700 m，二水平標(biāo)高-1000 m。 設(shè)計首采區(qū)采用采區(qū)準(zhǔn)備方式，工作面長度150 m，采用綜采放頂煤采煤法，礦井年工作日為330 d，工作制度為“四六制”。 大巷采用膠帶輸送機(jī)運煤，輔助運輸采用礦車運輸。礦井通風(fēng)方式為中央并列式。 專題部分題目：淺析煤礦瓦斯災(zāi)害防治技術(shù)。 翻譯部分題目：Why Longwall in India has not Succeeded as in other Developing Country Like China。印度的長壁采煤法為什么沒有像在中國這樣的發(fā)展中國家一樣取得成功。 關(guān)鍵詞： 立井； 暗斜井； 采區(qū)布置； 放頂煤采煤法； 中央并列式； 沿空掘巷 ABSTRACT This 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.It’s 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, it’s 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 in circular tunnels under unloading conditions. Keywords: Vertical shaft; Blind inclined shaft; Mining district preparation; Coal caving mining ; Center ventilation; Gob-side entry rataining。