roof weighting 中文意思是什麼
-
It was found that comparing with the case without dirt band the periodic weighting distance, median roof moving coefficient and support resistance all increased to different extent because of the influence of dirt band
發現由於夾矸的影響，與不含夾矸層工作面相比，其周期來壓步距、平均動壓系數和支護阻力都有不同程度的增大。 -
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。 -
Influence of roof bedding characteristic to first weighting interval
老頂分層厚度對工作面初次來壓步距的影響 -
Because the loader and the moduls of elasticity exists part difference in key stratum and combinatorial key stratum, and the formulae of calculating the roof weighting step has difference, so there must be existing big error if we use the formulae of key stratum to calculate the shallow coal seam ' s weighting parameter
大柳塔1203工作面按照關鍵層計算得出的頂板來壓步距與實際相差很大，而按照組合關鍵層計算得出的頂板來壓步距與實際基本吻合。 -
Based on the in - situ observation of the firstly mined working face of nanliang coal mine, the roof movement, the roof weighting intensity, and entry deformation and failure of the working face were analyzed
摘要通過南梁煤礦首采工作面采前的實驗研究和開采時的現場觀測，分析了工作面頂板的移動、來壓強度以及巷道變形破壞情況，總結了厚黏土覆蓋層淺埋煤層單體長壁工作面的礦壓顯現規律。
分享友人