|本期目录/Table of Contents|

[1]孙闯,张向东,张涛,等.深部大跨度泥质顶板剪切冒落失稳区预测研[J].中国安全生产科学技术,2016,12(1):23-27.[doi:10.11731/j.issn.1673-193x.2016.01.004]
　SUN Chuang,ZHANG Xiangdong,ZHANG Tao,et al.Prediction on shear caving instability region of deep and large span muddy roof[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2016,12(1):23-27.[doi:10.11731/j.issn.1673-193x.2016.01.004]
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深部大跨度泥质顶板剪切冒落失稳区预测研()
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
12
期数:
2016年1期
页码:
23-27
栏目:
学术论著
出版日期:
2016-01-30

文章信息/Info

Title:
Prediction on shear caving instability region of deep and large span muddy roof
文章编号:
1673-193X(2016)-01-0023-05
作者:
孙闯; 张向东; 张涛; 牛奇凡
(辽宁工程技术大学 土木与交通学院，辽宁 阜新 123000)
Author(s):
SUN Chuang;  ZHANG Xiangdong;  ZHANG Tao;  NIU Qifan
(School of Civil Engineering and Transportation, Liaoning Technology University, Fuxin Liaoning 123000, China)
关键词:
泥岩; 峰后; 硬化; 剪切破坏; 冒落
Keywords:
mudstone;  post-peak;  hardening;  shear failure;  caving
分类号:
X936
DOI:
10.11731/j.issn.1673-193x.2016.01.004
文献标志码:
A
摘要:
为了预测深部大跨度泥质顶板剪切冒落失稳区范围，基于泥岩峰后黏聚力软化-内摩擦角硬化的力学特性，获得了基于Mohr-Coulomb理论的泥岩峰后黏聚力软化-内摩擦角硬化的力学模型及参数，构建了深部大跨度泥质巷道数值模型，提出了泥岩峰后各强度参数变化对巷道顶板剪切破坏区的影响范围。结果表明：泥岩在峰后剪切破坏过程中具有明显的黏聚力软化-内摩擦角硬化特性；基于泥岩峰后黏聚力软化-内摩擦角硬化计算获得的巷道顶板剪切冒落高度小于黏聚力软化-内摩擦角软化的计算高度；巷道顶板潜在剪切破坏区位置及范围与泥岩峰后黏聚力软化-内摩擦角硬化计算结果十分接近。
Abstract:
In order to predict the range of shear caving instability region for deep and large span muddy roof, based on the mechanical properties of cohesion softening and internal friction angle hardening for post-peak mudstone, the mechanical model and parameters of cohesion softening and internal friction angle hardening for post-peak mudstone based on Mohr-Coulomb theory were obtained. A numerical model of deep and large span muddy roadway was established, and the influence range of change in each strength parameter on the shear failure region of roadway roof was obtained. The results showed that the mudstone has the obvious characteristics of cohesion softening and internal friction angle hardening in the post-peak shear failure process, and the height of shear caving for roadway roof calculated on the basis of cohesion softening and internal friction angle hardening for post-peak mudstone was smaller than that of cohesion softening and internal friction angle softening. The position and range of potential shear failure region for roadway roof were very close to the calculation results of cohesion softening and internal friction angle hardening for post-peak mudstone.

参考文献/References:

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[2]孙闯,张向东,张涛,等.深部大跨度泥质顶板剪切冒落失稳区预测研[J].中国安全生产科学技术,2016,12(1):23.[doi:10.11731/j.issn.1673-193x.2016.01.004]
　SUN Chuang,ZHANG Xiangdong,ZHANG Tao,et al.Prediction on shear caving instability region of deep and large span muddy roof[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2016,12(1):23.[doi:10.11731/j.issn.1673-193x.2016.01.004]

备注/Memo

备注/Memo:
国家自然科学基金项目(51274109)
更新日期/Last Update: 2016-01-28