subsidence fracture 中文意思是什麼
subsidence fracture
解釋
沉降龜裂- subsidence : n. 1. 沉澱；沉下，陷下。2. 平靜，平息；減退，衰耗。
- fracture : vt. ,vi. （使）破裂；（使）折斷；（使）斷裂。n. 1. 破裂，折斷，斷裂。2. 裂痕，裂縫，裂面。3. 【醫學】挫傷，骨折。4. 【礦物】斷口；【地質學；地理學】斷層。
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In accordance with the occurrence behavior of roof strata and the fracture characteristics of key stratum in shallow seam longwall mining, studied post - buckling behavior of roof key stratum in the process of mining by using initial post - buckling theory, which derived a critical load and a breaking span of the main roof during the first weighting, determined the final subsidence and the maximum rotation angle for broken key stratum, and presented an application with the example of daliuta 1203 face
摘要根據淺埋煤層頂板巖層的賦存特點和長壁開采時關鍵層的變形破斷特徵，應用初始后屈曲理論探討了開采過程中頂板關鍵層的后屈曲性態，得出了老頂初次來壓時頂板的臨界載荷和破斷步距，確定了頂板破斷后的極限下沉量和回轉角，並以神東礦區大柳塔1203工作面為例給出了工程實例。 -
Exploitation of groundwater can cause uneven subsidence of ground surface. if it can not be disposed well, a lot of environment calamities such as collapse of building and fracture of underground pipe lines, can occur
地下水開采工程會引發地面不均勻沉降，如果處理不當會造成地面建築物破壞和地下管線斷裂等多種地質環境災害。 -
The dissertation researches evolvement and character of formation compression by model test and geology analyzing, based on analyzing transformation of porosity, permeability, compressibility and density of sandstone and mudstone and fracture during subsidence and uplift
本文以模擬試驗和地質分析為主要研究手段，在分析沉降、抬升過程砂泥巖孔隙度、滲透率、壓縮性、密度及裂縫變化的基礎上，研究地層壓力的演化及特徵。
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