頂部煤層 的英文怎麼說

中文拼音 [dǐngbùméicéng]
頂部煤層 英文
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  • 頂 : i 名詞（人體或物體的最上部） crown; peak; top Ⅱ動詞1 （用頭支承） carry on the head 2 （從下面拱...
  • 部 : Ⅰ名詞1 （部分; 部位） part; section; division; region 2 （部門; 機關或組織單位的名稱） unit; mini...
  • 煤 : 名詞（黑色固體礦物） coal
  • 層 : i 量詞1 （用於重疊、積累的東西 如樓層、階層、地層） storey; tier; stratum 2 （用於可以分項分步的...
  • 頂部 : top; upper apex; top half; headpiece; roof; ridge; meplat （彈丸的）
  • 煤層 : [地質學] coal rake; coal seam; coal bed
  1. Then, it summarizes the present situation of geophysical methods, and presents an introduction to some methods such as mine direct current method, mine transient electromagnetic method and geological radar exploration

    本文簡要介紹了我國煤礦生產的發展趨勢，說明地質構造及煤層頂、底板水問題是當前煤礦深部開采中所面臨的主要地質問題。
  2. On the top of this cement kilm is the walking path and workers pour out oyster and coal ash from here

    灰窯主體之頂部為工作走道，系鋪設燒灰材料逐層傾倒蚵殼和煤炭的場所。
  3. The results show that ( 1 ) the unconsolidated confined aquifer plays a crucial role in load transfer because of its fluidity and replenishment in time, making the loads of overburden soil evenly transfer into the bedrock through the unconsolidated confined aquifer and the load keep constant during the excavation process ; ( 2 ) under the condition without unconsolidated confined aquifer, the load on the bedrock will be reduced sharply during the excavation

    研究結果表明：鬆散承壓含水層條件下，由於承壓水的流動性和補給作用，上覆表土層的載荷通過鬆散承壓含水層均勻地作用於下部基巖上，開挖過程中基巖頂界面上的載荷基本保持恆定，鬆散承壓含水層起到均勻傳遞載荷的作用；無鬆散承壓含水層時，作用在基巖頂界面上的表土層載荷隨煤層開挖而顯著降低。
  4. By theoretical analysis and actual measurement of field and phenomena analysis of rock burst, the author illustrates the directionless pressure, sudden movement and rupture of hard roof lead to the internal cracks of coal instable development, which easily results in rock burst happening

    摘要通過理論分析、現場實測和沖擊礦壓現象分析，說明了頂板堅硬巖層產生的靜壓和突然運動、破斷均可使煤體內部裂紋不穩定擴展而容易發生沖擊礦壓。
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