seam condition 中文意思是什麼
seam condition
解釋
煤層開采條件-
Before repairing, basing on the actual working condition, concerning the weldability, stress and deformation issues, the scheme of the cold welding technology whose essential being gtaw, low temperature preheating, postweld hammer the welded seam was established
修理前，圍繞兼顧解決焊接性、應力和變形問題，結合實際施工條件制定了以手工鎢極氬弧焊、鎳基焊絲、焊前低溫預熱、焊后錘擊焊縫為要素的冷堆焊工藝。 -
According to differences of construction process, boundary condition, temperature and stress of two schemes extending 3m deep short seam on upstream face in the middle of rcc overflow section and no short seam are calculated, what " s more, in this paper the equivalent line drawing of stable temperature field and unstable temperature field during construction and operation period and the duration curve drawing of typical points " s temperature and stress are plotted, and the results of peak and minimum on temperature in every month and maximum on tensile stress are attained
根據施工過程和邊界條件，對溢流壩段中間上游面增設3m深短縫和不設短縫兩個方案進行了溫度和應力計算，並繪制出穩定溫度場等值線圖及施工期、運行期非穩定溫度場等值線圖，典型點溫度和應力歷時曲線圖，逐月最高、最低溫度和最大拉應力及相應位置等成果。 -
For the tectonic coal ， the properties of higher porosity and lower permeability make it capable of keeping higher gas pressure ； both of the “ isolating action ” and “ gas - cushion action ” cut down the resistance against outburst ； the specifity of high - defomed - extent makes desorption ， escape and flowing quickly become possible ； the existing of weak - seam or “ thoroughfare - seam ” create suitable conditions for the initial erupting and continued developing of coal and gas outburst. on the whole ， it is the synhesis action of all factors ， which leads to outbursts. the existing of tectonic coal with certain thickess is the essential condition of coal and gas outbursts ， but not the sufficient condition
高空隙率、低透氣性使構造煤能夠保持較高的瓦斯壓力；破碎性、 「隔離」作用及「氣墊」作用，使構造煤抵禦外力作用的能力大大降低；構造煤變形幅度大的特性，為瓦斯的迅速解吸、放散和快速流動創造了條件；構造煤薄弱分層或「通道層」的存在，則為煤與瓦斯突出的初始激發和持續發展奠定了基礎；上述因素的共同作用，影響和制約了煤與瓦斯突出的強度和分佈.盡管如此，一定厚度的構造煤的存在只是發生煤與瓦斯突出的必要條件和有利條件，而非充分條件 -
Used to concrete seam and arbitrarily shape seam in component. in the condition of the expanding being favorable limited, attain satisfied stop - water effect and manage the concrete interstitial leaking. at the same time, it can be also used to shipping and engine etcindustrial equipment
適用於現場澆注的混凝土施工縫和嵌入構件任意形狀的接縫內，在其膨脹受到良好限制的條件下達到滿意的止水效果，治理混凝土裂縫的漏水，同時也用於船舶、機車等工業設備的防水密封。 -
Hydrogeological condition for coal mining of lower coal seam group in nantun coal mine
南屯煤礦下組煤開采水文地質條件 -
Coal seam injecting water boring hole technology under special condition
特殊條件下的煤層注水鉆孔技術 -
Elementary analysis on occurrence condition of floor limestone water in no. 6 coal seam of shuoli mine
朔里礦6煤層底板灰巖水賦存情況淺析 -
Spontaneous combustion prevention of goaf abandoned coal from coal winning under the condition of thick coal seam slicing mining
厚煤層分層開採下分層工作面回採期間采空區遺煤自燃的防治 -
The hardness and thickness of coal seam play a great role in the vertical distribution of stress in coal and the occurrence of rock bunt under the condition of hard roof and hard floor
在「兩硬」條件下，煤層厚度與硬度的變化對煤體中的應力分佈有著很大的影響，從而對煤巖體系統中沖擊礦壓的發生有著很大的影響。 -
Study on mining hydraulic fill condition of no. 3 coal seam in yang cun coal mine
楊村煤礦3煤開采充水條件研究
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