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annular pack中文是什么意思

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  • Through simulating model tests of shield tunnel passing through the yellew river in the diversion project from south to north china , a systematic analysis on the primary factors affecting joint stiffness , including arrangement of joint bolt , thickness of annular packing of bolt , behavior and thickness of cushion material between two tube plates , magnitude of prestressing force of joint bolt and different stressed states at tube plate joint etc . , are performed . the study results may provide reference for tube plate design of shield tunnel
    通過南水北調穿黃盾構隧道仿真模型試驗,對影響接頭剛度的主要因素即連接螺栓的布置、螺栓墊圈的厚度、管片與管片之間墊層材料的性能和厚度、連接螺栓的預緊力的大小及管片接頭不同的受力狀態進行了系統的分析,為盾構隧道管片設計提供了參考。
  • Designning well tube and drill - hole diameter in order to increase thickness of both annular packing gravel and water - resisting clay , nylon net packing around well tube filters , designing filter layer on the boundary between packing gravel and water - resisting clay and ramming the gravel by working the piston into the well after gravel packing completion and the filling clay for salt - water resisting etc . we succeeded in constructing 3 drinking - water wells in minqin county , proved the affectivity and feasibility of using it and giving a certain technical demonstration of construction of drinking - water well in the same similar to this area
    通過孔徑與管徑的調配設計,增大環狀粒料層和止水粘土層的厚度;濾水管外包尼龍紗網;粒料與止水粘土接觸界面上設計反濾層;填粒后先行拉活塞利用水力夯實粒料層,再投粘土球止掉上部咸水等措施,在民勤縣三口人飲水井施工中取得顯著效果,證明了該套成井工藝的有效性和可行性,有望為同類地區人飲水井施工提供技術示范作用。
  • Abstract : through simulating model tests of shield tunnel passing through the yellew river in the diversion project from south to north china , a systematic analysis on the primary factors affecting joint stiffness , including arrangement of joint bolt , thickness of annular packing of bolt , behavior and thickness of cushion material between two tube plates , magnitude of prestressing force of joint bolt and different stressed states at tube plate joint etc . , are performed . the study results may provide reference for tube plate design of shield tunnel
    文摘:通過南水北調穿黃盾構隧道仿真模型試驗,對影響接頭剛度的主要因素即連接螺栓的布置、螺栓墊圈的厚度、管片與管片之間墊層材料的性能和厚度、連接螺栓的預緊力的大小及管片接頭不同的受力狀態進行了系統的分析,為盾構隧道管片設計提供了參考。
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