深埋坑道复杂围岩组合试件岩爆倾向性试验研究

田宁

doi:10.3973/j.issn.1672-741X.2012.04.010

隧道建设 >

2012 , Vol. 32 >Issue 4: 486 - 489

DOI: https://doi.org/10.3973/j.issn.1672-741X.2012.04.010

研究与探索

深埋坑道复杂围岩组合试件岩爆倾向性试验研究

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(中铁工程设计咨询集团有限公司济南设计院，济南 250022)

田宁（1984—），男，河北徐水人，2010年毕业于中国矿业大学（北京）结构工程专业，硕士，工程师，现从事隧道及地下结构工程方面的设计工作。

收稿日期: 2012-02-13

修回日期: 2012-07-16

网络出版日期: 2012-10-16

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Study on Rockburst Tendency of Complex Surrounding Rock Combination in a Deepburied Tunnel

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(Ji’nan Design Institute, China Railway Engineering Design and Consultant Group Co., Ltd., Ji’nan 250022, China)

Received date: 2012-02-13

Revised date: 2012-07-16

Online published: 2012-10-16

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摘要

岩爆防治是深埋地下工程界面临的重要难题之一。重庆地区某深埋坑道工程是由砂岩、粉砂岩、泥岩构成的层状地层，施工中始终存在岩爆危害。为降低岩爆威胁，从岩爆倾向性室内评判着手，进行了复杂围岩组合试件力学性质和动态破坏特性试验研究，同时研究了浸水对深部岩体岩爆倾向性的影响，最终获得了岩爆倾向室内定量评价结果，为最大限度地降低岩爆威胁提供了试验依据。

关键词： 深埋坑道; 岩爆倾向性; 复杂围岩; 组合试件; 浸水试验

本文引用格式

田宁 . 深埋坑道复杂围岩组合试件岩爆倾向性试验研究[J]. 隧道建设, 2012 , 32(4) : 486 -489 . DOI: 10.3973/j.issn.1672-741X.2012.04.010

Abstract

Rockburst is a violent failure in deepburied tunnels. A deepburied tunnel in Chongqing is located in ground consisting of sandstone layers, siltstone layers and mudstone layers, which is subject to rockburst during construction. The mechanical characteristics and dynamic fracture characteristics of the complex surrounding rock combination are studied. The influence of water immersion on the rockburst tendency is studied. The indoor evaluation results on the rockburst tendency are obtained. The paper can provide reference for minimizing the rockburst risks.

Key words： deepburied tunnel; rockburst tendency; complex surrounding rock; combination; water immersion test

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