非开挖技术对既有铁管道的影响

IF 0.3 Q4 ENGINEERING, GEOLOGICAL Geotechnical Engineering Pub Date : 2005-07-01 DOI:10.1680/GENG.2005.158.3.159
A. Hunter
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引用次数: 11

摘要

冲击钻和定向钻单元在1-2米的深度下形成直径约为300毫米的隧道。它们通常用于安装电缆或小直径管道。这种类型的隧道施工不同于传统的隧道施工,因为它不需要开挖土壤。隧道是通过向外以径向为主的动力排土而形成的。这就产生了一个应力和位移场,有可能破坏现有的设施和建筑物。为了减少对现有结构的破坏,需要提供详细说明可接受的接近距离的安装指南。本文详细介绍了一种方法,该方法已用于计算具有横向几何结构的现有灰铁管道与新管道的可接受接近距离。该研究利用有限差分技术结合解析腔膨胀解来确定隧道开挖引起的应力-应变场。
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Effect of trenchless technologies on existing iron pipelines
Impact moles and directional drilling units form tunnels of up to approximately 300 mm in diameter at a depth of 1–2 m. They are typically used for the installation of electricity cables or small-diameter pipelines. This type of tunnelling differs from conventional tunnelling owing to the lack of soil excavation. The tunnel is formed by dynamically expelling soil outwards in a predominantly radial direction. This creates a stress and displacement field that has the potential to damage existing services and buildings. To reduce the risk of damage to existing structures installation guidelines detailing acceptable proximity distances need to be provided. This paper details a methodology that has been used to calculate acceptable proximity distances to existing grey iron pipelines that have a transverse geometric configuration to the new pipeline. The study utilises finite difference techniques in conjunction with analytical cavity expansion solutions to determine the stress–strain field induced by tunnellin...
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来源期刊
Geotechnical Engineering
Geotechnical Engineering ENGINEERING, GEOLOGICAL-
CiteScore
0.50
自引率
0.00%
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0
期刊介绍: The objectives of the Association shall be the promotion of co-operation among geotechnical societies in SE Asia; and the assistance to member societies who have limited number of members. Now there is only one combined web titled: AGSSEA-SEAGS. SEAGS & AGSSEA encourage the submission of scholarly and practice-oriented articles to its journal. The journal is published quarterly. Both sponsors of the journal, the Southeast Asian Geotechnical Society and the Association of Geotechnical Societies in Southeast Asia, promote the ideals and goals of the International Society of Soil Mechanics and Geotechhnical Engineering in fostering communications, developing insights and enabling the advancement of the geotechnical engineering discipline.
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