公路隧道岩质和土质围岩统一亚级分级标准研究

›› 2010, Vol. 31 ›› Issue (2): 547-552.

公路隧道岩质和土质围岩统一亚级分级标准研究

王明年¹，陈炜韬²，刘大刚¹，童建军¹

1.西南交通大学土木工程学院，成都 610031；2.中国水电顾问集团成都勘测设计研究院，成都 610072

收稿日期:2008-11-07 出版日期:2010-02-10 发布日期:2010-03-24
作者简介:王明年，1965年生，博士，男，教授，主要从事隧道及地下工程教学与科研工作。
基金资助:
交通部西部交通建设科技项目（No. 2004-318-00030）。

Study of unified standard of rocky and soil surrounding rock sub-classification in road tunnels

WANG Ming-nian¹, CHEN Wei-tao², LIU Da-gang¹, TONG Jian-jun¹

1. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China; 2. Hydro China Chengdu Engineering Corporation CHIDI, Chengdu 610072, China

Received:2008-11-07 Online:2010-02-10 Published:2010-03-24

摘要/Abstract

摘要：

目前实施的《公路隧道设计规范》（JTG D70－2004）对土质围岩分级、围岩亚级分级方法都没有进行研究，因此，不能满足隧道设计和施工的要求。通过对岩质围岩和土质围岩自稳性的大量室内试验、数值计算和理论分析，建立了公路隧道岩质围岩和土质围岩统一的亚级分级标准。研究结果显示：围岩自稳跨度是围岩自稳性的综合反映，围岩自稳跨度可分为长期稳定跨度、基本稳定跨度、暂时稳定跨度和不稳定跨度。研究表明，规范中岩质围岩的Ⅲ级、Ⅳ级和Ⅴ级分别依据自稳跨度可分为2个、3个和2个亚级；土质围岩尽管分为黏质土围岩、砂质土围岩及碎石土围岩，但按照各自的自稳跨度可以分别进行亚级划分。可见，以自稳跨度可以建立岩质围岩和土质围岩统一的亚级分级标准。

关键词: 公路隧道, 亚级分级, 自稳跨度

Abstract:

The implementary Code for Design of Road Tunnel (JTG D70－2004) can’t satisfy the requirement of design and construction sometimes due to no study of soil surrounding rock classification and sub-classification methods. After ascertaining the building foundation of surrounding rock sub-classification standard in road tunnel, it had been constituted through lots of test, numerical calculation and theoretical analysis. The researches show that self-stability span is synthetical reflection of surrounding rock stability, so sub-classification standard can be constituted based on it. Surrounding rock self-stability span can divide into long-term stability span, basic stability span, temporary stability span and instability span. Ⅲ class of Rocky surrounding rock in criterion can divide into two sub-classification according as surrounding rock stability, three for Ⅳ class and two for Ⅴ class. Though soil surrounding rock include clayey surrounding rock, sandy surrounding rock and debris surrounding rock, their stability can be unified. The uniform standard of rocky and soil surrounding rock sub-classification built by self-stability span has rationality and inheritance.

Key words: road tunnel, surrounding rock sub-classification, self-stability span

中图分类号:

U 451

王明年，陈炜韬，刘大刚，童建军. 公路隧道岩质和土质围岩统一亚级分级标准研究[J]. , 2010, 31(2): 547-552.

WANG Ming-nian, CHEN Wei-tao, LIU Da-gang, TONG Jian-jun. Study of unified standard of rocky and soil surrounding rock sub-classification in road tunnels[J]. , 2010, 31(2): 547-552.

参考文献

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