近蚀变带地应力异常分布对岩爆风险强度影响研究

山东大学学报(工学版) ›› 2009, Vol. 39 ›› Issue (4): 30-33.

近蚀变带地应力异常分布对岩爆风险强度影响研究

张乐文李镐秦杰

张乐文：山东大学岩土与结构工程研究中心，山东济南 250061; 李镐：中国水利水电建设工程咨询西北公司, 陕西西安 710065; 秦杰：中电四川(江边)发电有限公司，四川成都 610041

收稿日期:2009-04-20 出版日期:2009-08-24 发布日期:2009-08-24
作者简介:张乐文(1972-),男,山东潍坊人,副教授,博士后，主要从事岩土锚固及注浆理论、应用研究及岩爆预测、隧道超前地质预报等方面的研究工作.E-mail:lewenzhang@sdu.edu.cn.
基金资助:
国家重点基础研究发展规划(973计划)资助项目(2009CB724607)；山东省自然科学基金面上资助项目(Y2007F53)

Impact of abnormal stress distribution near the alteration belt on rock-burst risk strength

ZHANG Le-Wen： Geotechnical and Structure Engineering Research Center, Shandong University, Jinan 250061, China; LI Gao：China Northwest Water Conservancy ＆ Hydropower Engineering Consulting Company, Xi’an 710065, China; 
QIN Jie：Sichuan CLP (River) Power Company Limited, Chengdu 610041, China

Received:2009-04-20 Online:2009-08-24 Published:2009-08-24

摘要/Abstract

摘要：

通过系统的数值仿真试验,研究了蚀变带厚度、地应力侧压系数这两个因素对地应力异常分布区的影响.采用正交与均匀试验设计方法,应用有限差分分析方法,对各种计算工况进行分析,得到了规律性的结果.最后以江边电站引水隧道实际工程为例,分析蚀变带附近的应力分布情况并进行了岩爆等级预测.得出了可以指导工程实践的结论.

关键词: 蚀变带;岩爆;地应力;数值仿真

Abstract:

The inference of alteration zone thickness and side pressure coefficient to abnormal stress distribution was studied by systematic numerical simulation. Using the test design method of orthogonal and uniformity and applying the analysis method of finite difference method produced regular results. On the basis of the riverside hydropower station tunnel, the influences of the alteration zone to the distribution of ground stress and rockburst degrees were studied, and some useful conclusions were obtained.

Key words: alteration belt; rockburst; ground stress; numerical simulation

张乐文李镐秦杰. 近蚀变带地应力异常分布对岩爆风险强度影响研究[J]. 山东大学学报(工学版), 2009, 39(4): 30-33.

ZHANG Le-Wen, LI Gao, QIN Jie. Impact of abnormal stress distribution near the alteration belt on rock-burst risk strength[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2009, 39(4): 30-33.

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