未襯砌的 的英文怎麼說
中文拼音 [wèichènqìde]
未襯砌的
英文
unlined-
Because there are small openings and the three cracksin the concrete lining of gas tunnel, the gas should intrude into the gas tunnel built. this effect will endanger the transport safety. the authors study on the operation ventilation technology in the gas tunnel and put forward an economical, safety and effective ventilation plan, and therefore furnish a theoretical basis for the gas tunnel ventilation design in the future
由於瓦斯隧道混凝土襯砌本體中的細小孔隙和「三縫」等缺陷的存在，建成后的瓦斯隧道必然受瓦斯侵襲，這對運營安全危害極大，為此，本文對瓦斯隧道運營通風技術進行了認真研究，提出了經濟、安全、有效的通風方案，為未來瓦斯隧道的通風設計提供了理論依據。This thesis pass through the laser delimitation instrument and the geological radar instrument means, to tunnel initial stages support and secondary structure. at past the research of tunnel lining thickness depend on opening dig figure, don " t consider the effect of tunnel lining inner figure. adopting the integrate method of the laser delimitation instrument and the geological radar could most exact reflect the change rule of tunnel lining thickness, but also could do lots unbroken examination, have very important for summing - up the rule of tunnel lining thickness change, and have very amplitude extend value
本文通過激光限界儀和地質雷達綜合方法，對新建高速公路隧道初期支護和二次襯砌混凝土內輪廓和厚度進行了檢測，對襯砌厚度的分佈規律以往的研究中，多以開挖和襯砌的輪廓變化為依據，並未考慮襯砌內輪廓的影響，而採用激光斷面輪廓限界儀和地質雷達綜合方法能較為準確的反應襯砌厚度的變化規律，並且能夠無破損的做大量的檢測工作，為總結混凝土厚度的規律有很大作用，並有極大的推廣價值。The model of the problem is composed of two half spaces with half circular lining inclusion. horizontal surfaces of the half spaces are loaded with undetermined anti - plane force in order to satisfy continuity conditions at linking section, or with some certain forces to appear cracks. a series of fredholm integral equations of the first kind for determining the unknown forces can be set up through continuity conditions that expressed by using of the green " function
然後將問題的模型視為「契合」問題，即將其剖分為兩個含半圓環形襯砌的彈性半空間，分別在其剖分面上加置未知的出平面荷載，並在欲出現裂紋位置加置出平面反力使之產生裂紋，接下去利用green函數表示出界面連續條件，建立決定待解外力系的第一類fredholm積分方程組。
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