|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]
点击复制

深部大跨度泥质顶板剪切冒落失稳区预测研()
分享到:

《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:

[1]吴大伟,吴爱军,苏华友.大断面巷道中空预应力注浆锚杆的支护效果研究[J].中国安全生产科学技术,2015,11(8):90-95.WU Dawei,WU Aijun,SU Huayou.Study on support effect of hollow pre-stress grouting anchor in large section roadway[J].Journal of Safety Science and Technology,2015,11(8):90-95.

[2]孙闯,张向东,李永靖. 深部软弱岩体峰后等效力学模型及数值计算研究[J].岩土工程学报,2014,36(6):1113-1122.SUN Chuang,ZHANG Xiangdong,LI Yongjing. Soft rock equivalent mechanical model of post-peak in deep and numerical computing research[J].Chinese Journal of Geotechnical Engineering,2014,36(6):1113-1122.
[3]张磊,寇建恒,窦梅林,等.采空区影响条件下巷道围岩应力监测与研究[J].中国安全生产科学技术,2015,11(8):33-39.ZHANG Lei,KOU Jianheng,DOU Meilin,et al.Monitoring and research on surrounding rock stress in roadway under the influence of goaf[J].Journal of Safety Science and Technology,2015,11(8):33-39.
[4]Fraldi M, Guarracino F. Analytical solutions for collapse mechanisms in tunnels with arbitrary cross sections[J]. International Journal of Solids and Structures, 2010, 47(2): 216-223.
[5]Fraldi M, Guarracino F. Evaluation of impending collapse in circular tunnels by analytical and numerical approaches[J]. Tunnelling and Underground Space Technology, 2011, 26: 507-516.
[6]王琦,王洪涛,李术才,等. 大断面厚顶煤巷道顶板冒落破坏的上限分析[J]. 岩土力学,2014,35(3):795-801.WANG Qi,WANG Hongtao,LI Shucai,et al. Upper bound limit analysis of roof collapse mechanism of large section roadway with thick top coal[J]. Rock and Soil Mechanics,2014,35(3):795-801.
[7]牛少卿,杨双锁,李义,等. 大跨度巷道顶板层面剪切失稳机理及支护方法[J]. 煤炭学报,2014,22(增2):3692-3699.NIU Shaoqing,YANG Shuangsuo,LI Yi,et al. Shear instability mechanism and support methods of laminated roof and floor strata in roadway[J]. Journal of China Coal Society,2014,22(s2):3692-3699.
[8]张军,王建鹏,杨文光,等.综采工作面冒落高度模糊综合预测模型研究[J]. 中国矿业大学,2014,43(3):426-432.ZHANG jun,WANG jianpeng,YANG wenguang,et al.Research on the fuzzy comprehensive predicting model for caved zone height of fully mechanized working face[J]. Journal of China University of Mining &Technology,2014,43(3):426-432.
[9]Zhao X G,Cai M. A dilation angle model for rocks[J]. International Journal of Rock Mechanics and Mining Sciences,2010,47(3):368-384.
[10]L.R. Alejano,E. Alonso.Application of the convergence-confinement method to tunnels in rock masses exhibiting Hoek-Brown strain-softening behaviour[J]. International Journal of Rock Mechanics and Mining Sciences,2010:150-160.
[11]Catrin Edelbro. Numerical modelling of observed fallouts in hard rock masses using an instantaneous cohesion-softening friction-hardening model[J].Tunnelling and Underground Space Technology,2009,24(2):398-409.
[12]孙闯,张树光,贾宝新,等.花岗岩峰后力学特性试验与模型研究[J].岩土工程学报,2015,37(5):847-853.SUN Chuang, ZHANG Shuguang, JIA Baoxin,et al. Experimental and Numerical Simulation After the Peak of Mechanical Properties of Granite [J].Chinese Journal of Geotechnical Engineering,2015,37(5):847-853.

相似文献/References:

[1]马建宏,候超,信长喻,等.型煤峰后渗透特性试验研究[J].中国安全生产科学技术,2017,13(11):104.[doi:10.11731/j.issn.1673-193x.2017.11.017]
 MA Jianhong,HOU Chao,XIN Changyu,et al.Experimental study on permeability characteristics of briquette coal after peak[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2017,13(1):104.[doi:10.11731/j.issn.1673-193x.2017.11.017]
[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