Construction of tunnel support design system in squeezing ground.

挤压地基隧道支护设计体系构建

• 批准号: 05555139
• 负责人: AKAGI Tomoyuki
• 金额: $ 0.96万
• 依托单位: Toyota National College of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05555139/
• 关键词: Tunnel; Expansive Ground; Squeezing; Sopport System; Rockbolt; Deformation; Competence Factor; 支保工の設計; 地山強度比

Shotcrete, rockbolts and steel ribs are principal support members in modern tunelling. In spite of their widespread use, it is very rate to find any fundamental study on the proper design method for the reinforcement effect of support systems consisting of shotcrete, rockbolts and steel ribs.The squeezing phenomenon of rock around tunnels and its mechanism and associated factors are clarified by studying carefully observed failures in-situ and in laboratory model tests. Then, an extensive survey of tunnels in squeezing rocks in Japan is presented and the results of this survey is summarised.A new methodsis proposed to predict the squeezing potential and deformation of tunnels in squeezing rock and to design of support systems. The method has been applied to actual tunnelling projects, where squeezing problems encountered, to check its applicability and validity. As concrete examples, several applications of the method to predict the squuezing potential and deformation and support systems are given and compared with actual obsevations.

Shotcrete，螺栓和钢肋骨是现代Tunelling的主要支持成员。尽管有广泛的使用，但要找到有关适当设计方法的任何基本研究，以增强支持系统的增强效果，这些支持系统由shotcrete，岩石和钢肋骨组成。通过研究仔细观察到的原位和实验室模型测试中的仔细观察到的故障来阐明。然后，提出了对日本挤压岩石中的隧道进行广泛的调查，并概述了该调查的结果。提出了一种新方法，以预测挤压岩石中隧道的挤压潜力和变形，并设计了支撑系统的设计。该方法已应用于遇到挤压问题的实际隧道项目，以检查其适用性和有效性。作为具体的示例，给出了该方法的几种应用，以预测堆积潜力，变形和支撑系统，并与实际的假设进行比较。

项目成果

赤木 知之: "スクィーズィング地山におけるトンネル壁面変位の予測と支保工の設計" 第9回岩の力学国内シンポジウム講演論文集. 719-724 (1994)

Tomoyuki Akagi：“挤压地质层中隧道壁位移预测与支护设计”第九届全国岩石力学学术研讨会论文集719-724（1994）。

アイダン・オメル、赤木 知之: "スクィーズィングロックにおけるトンネル周辺岩盤の変形を考慮した支保工の設計法" 第26回岩盤力学に関するシンポジウム講演論文集. 51-55 (1995)

Aidan Omer，Tomoyuki Akagi：“考虑挤压岩石中隧道周围岩石变形的支护设计方法”第 26 届岩石力学研讨会论文集 51-55（1995）。