internal boring 中文意思是什麼
internal boring
解釋
鏜孔-
In this paper, it is studied and analyzed characteristic of stress, distortion etc. of pipe liner structure combining dahuofang transport water tunnel practice project, tunnel boring machine construction, and it is considered that affects internal force of pipe liner for early stress of underground structure and digging load. in nonlinear finite element calculation model, folium cells have been simulated among pipe liner and pipe liner and wall rock. under varies load condition, it has educed that changing rule of stress, distortion and load characteristic pipe liner in kinds of wall rock tunnel by analysis and calculation
本文結合實際工程，分析研究了大夥房水庫輸水隧道工程在採用掘進機施工方法的情況下，利用管片襯砌的結構應力、變形等受力特性，考慮地下結構初始應力和開挖荷載對襯砌內力的影響，採用薄層單元模擬襯砌管片之間、襯砌管片與圍巖之間的非線性有限元計算模型，通過分析計算得出不同荷載工況下各類典型圍巖段隧道襯砌管片受力特徵、應力和位移變化規律。 -
As soon as the tunnel boring machine advances 1m forward, 6 pieces of pre - cast concrete segment are fabricated and forming a ring with internal diameter of 5. 6m to support soil outside, while simultaneous back - filling and 32 - hole chemical grouting injector equipment installed with tunnel boring machine consolidating soil instantaneously to enhance the soil strength. the tunnel boring machine is also equipped with guided top gyroscope and true circularity retaining device for construction accuracy
其中值得一提者，板橋土城線所採用之潛盾機系新型之土壓平衡式機種，具同步背填灌漿之功能，對地表沉陷之控製成效優良，目前已貫通並通過民房及商業區下方之下行隧道其初期沉陷均控制在5mm之內，二次沉陷及最終沉陷平均總量最大亦僅18mm ，遠優于初始設計的警戒值30mm 。
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