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摘 要
一般部分針對錢營孜礦井進行了井型為1.5Mt/a的新井設計。錢營孜礦井位于安徽省宿州市境內(nèi)，井田走向長約7.0km，傾向長約5.3km，面積約37.1km2。主采煤層為32煤層，平均傾角12~15°，平均厚度2.89m。井田工業(yè)儲量為216.6Mt，可采儲量161.0Mt，礦井服務年限為71.6a。礦井正常涌水量為434m3/h，最大涌水量為885m3/h。礦井相對瓦斯涌出量為2.5m3/t，絕對瓦斯量10 m3/min，屬低瓦斯礦井。
根據(jù)井田地質(zhì)條件，設計采用立井兩水平開拓方式，主井暗斜井延深，副井、中央風井立井直接延深，軌道大巷、膠帶機運輸大巷和回風大巷皆為巖石大巷，布置在32煤層底板巖層中。一水平標高-480 m，二水平標高-700 m。
西二采區(qū)采用了采區(qū)準備方式，共劃分為五個工作面，并進行了運煤、通風、運料、排矸、供電系統(tǒng)設計。
針對32202工作面進行了采煤工藝設計。該工作面煤層平均厚度為2.89 m，平均傾角12.6°，直接頂為的砂質(zhì)泥巖，老頂為細砂巖。工作面采用長壁綜采一次采全高采煤法。采用雙滾筒采煤機割煤，往返一次割兩刀。采用“三八制”工作制度，截深0.8 m，每天八個循環(huán)，循環(huán)進尺6.4m，月推進度192 m。
大巷采用膠帶輸送機運煤，輔助運輸采用蓄電池式電機車牽引固定箱式礦車。主井采用兩套帶平衡錘的16 t箕斗提煤，副井采用一對1.0 t礦車雙層四車窄罐籠和一個帶平衡錘的1.0 t礦車雙層四車寬罐籠運料和升降人員。
專題部分題目是《綜采工作面矸石充填技術初探》, 通過分析上覆巖層的破斷規(guī)律，定義了柔性關鍵層，分析出了柔性關鍵層對關鍵層復合破斷和礦壓顯現(xiàn)的影響。
翻譯部分題目是《Recent Developments and Practices to Control Fire in Undergound Coal Mines》。
關鍵詞：錢營孜礦；立井開拓；暗斜井；采區(qū)布置；中央并列式；柔性關鍵層
ABSTRACT
The general design is about a 1.50 Mt/a new underground mine design of Qianyingzi coal mine. Qianyingzi coal mine is located in Suzhou, Anhui province. It’s about 7.0 km on the strike and 5.3 km on the dip, with the 37.1 km2 total horizontal area. The minable coal seam is 32with an average thickness of 2.89 m and an average dip of 12~15°. The proved reserves of this coal mine are 216.6 Mt and the minable reserves are 161.0 Mt, with a mine life of 71.6 a. The normal mine inflow is 434 m3/h and the maximum mine inflow is 885 m3/h. The mine gas emission rate is 2.5 m3/t and 10 m3/min which can be recognized as low gas mine.
Based on the geological condition of the mine, this design uses a vertical shaft two-level development method. The extension of the main shaft is blind inclined shaft and the extension of auxiliary shaft and central ventilation shaft is vertical shaft. Track roadway, belt conveyor roadway and return airway are all rock main roadways, arranged in the floor rock of 32 coal seam.. The first level is at -480 m. The second level is at -700 m.
The design applies district preparation against the first district of West Two which divided into five longwall faces totally, and conducted coal conveyance, ventilation, gangue conveyance and electricity designing.
The design conducted coal mining technology design against the 32202 face. The coal seam average thickness of this working face is 2.89 m and the average dip is 12.6°, the immediate roof is mud stone and the main roof is sand stone. The working face applies fully mechanized longwall full-height coal caving method, and uses double drum shearer cutting coal which cuts twice each working cycle. "Three-Eight" working system has been used in this design and the depth-web is 0.8 m with eight working cycles per day, and the advance of a working cycle is 6.4 m and the advance is 192 m per month.
Main roadway makes use of belt conveyor to transport coal resource, and battery locomotive to be assistant transport. The main shaft uses double 16 t skips to lift coal with a balance hammer and the auxiliary shaft uses a double narrow1.0 t four-car double-deck cage and a wide 1.0 t four-car double-deck cage to lift material and miners.
The monographic study entitled "The Flexible Dominant Stratum Theory of Strata Control ". By analyzing the breaking law of overburden, the flexible dominant stratum is defined. The paper has analyzed the effects of the flexible key layer on the dominant stratum composite breaking and the pressure behavior of mine.
The title of the translated academic paper is "Recent Developments and Practices to Control Fire in Undergound Coal Mines ".
Keywords: Qianyingzi coal mine; Vertical shaft development; Blind inclined shaft; Mining district preparation; The central paratactic type; The flexible dominant stratum