roof angle 中文意思是什麼
roof angle
解釋
頂角-
Through analyzing on the different phenomena of gas pouring amount at different coal seam, different area at the same seam, different position at the same area, the coal thicknss, inclined angle, structure, roof and floor rock character and water content in coal est. geology factor are regarded as the main reason of effecting the gas pouring amount
通過對不同煤層，同一煤層不同區域，同一區域不同地點瓦斯湧出量有很大差異現象的分析，認為煤層厚度、傾角、構造、頂底板巖性、煤中水分等地質因素是影響瓦斯湧出大小的主要原因。 -
Using fem ( finite element method ), the paper makes mechanical analyses on bench cut method and side heading method, it also makes mechanical analyses on some auxiliary construction methods, such as big pipe - roof protection, horizontal roll - spraying, big and small angle pipe - roof protection and surface grouting
論文採用有限元的分析方法，主要對臺階法、側壁導坑法進行了力學分析，也選擇了大管棚法、水平旋噴法、大小外插角管棚法和地表注漿加固四種輔助工法進行力學分析。 -
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。 -
To improve efficiency of reconstruction, the method of image collection that collected objects on the revolving flat roof is pegged and transform angle and distance is designed, and relation in sampling images. yawp of images is removed by dealing with intensity correlation and smoothness
為了提高重建效率，本文採用將重建對象固定在旋轉平臺上，通過角度和距離變換進行圖像采樣的方法，加強了采樣圖像之間的聯系;通過灰度處理、平滑化等預處理來消除噪聲，為后續的特徵提取和特徵匹配打下了良好的基礎。 -
Abstract : by means of the basic climatic principle and the local astronomical parameters the optimal dip angle, maximum wind pressure borne by the roof material, the depth of the cold - proof ditch and the suitable distance between the greenhouses in chengdu area are calculated
文摘:應用氣侯學基本原理，當地天文參數與氣候資料，計算了成都地區節能日光溫室採光面最佳傾斜角，頂面覆蓋材料承受最大風壓，防寒溝深度及溫室間適宜距離。 -
Study on application of bolting with wire mesh in steep coal seam roadway with comprehensive roof and large tilt angle
錨索網支護在大傾角復合頂板煤巷的應用實踐與分析 -
Practise in combined mining roof caving coal at lower position in large angle thick coal seam
大傾角厚煤層低位綜采放頂煤實踐
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