巨厚松散层土体压缩特性对开采沉陷影响研究

doi:10.16265/j.cnki.issn1003-3033.2018.07.022

中国安全科学学报 ›› 2018, Vol. 28 ›› Issue (7): 135-141.doi: 10.16265/j.cnki.issn1003-3033.2018.07.022

巨厚松散层土体压缩特性对开采沉陷影响研究

李新岭¹, 郭文兵^1,2 教授, 赵高博¹

1 河南理工大学能源科学与工程学院,河南焦作 454000;
2 煤炭安全生产河南省协同创新中心,河南焦作 454000

收稿日期:2018-03-12 修回日期:2018-05-24 出版日期:2018-07-28 发布日期:2020-11-25
作者简介:李新岭(1990—),男,河南虞城人,硕士研究生,研究方向为矿山压力与岩层控制。E-mail:1765103748@qq.com。
基金资助:
国家自然科学基金资助(51774111);河南省科技创新杰出人才基金资助(184200510003)。

Study on influence of compression characteristics ofsuper-thick alluvium on mining subsidence

LI Xinling¹, GUO Wenbing^1,2, ZHAO Gaobo¹

1 School of Energy Science and Engineering,Henan Polytechnic University,Jiaozuo Henan 454000,China;
2 Collaborative Innovative Center of Coal Safety Production in Henan Province,Jiaozuo Henan 454000,China

Received:2018-03-12 Revised:2018-05-24 Online:2018-07-28 Published:2020-11-25

摘要/Abstract

摘要： 为研究巨厚松散层土体压缩特性及其对开采沉陷的影响,对焦作矿区地表粘性土进行三轴压缩试验,基于试验结果对巨厚松散层下某工作面开采沉陷进行数值模拟,并分析巨厚松散层下开采地表沉陷机制。结果表明:松散层土体存在压缩现象,且随松散层厚度的增加土体压缩量增大,进而引起地表下沉值增大;土体自身压缩特性是使巨厚松散层下开采地表下沉偏大的主要因素。

关键词: 巨厚松散层, 土体压缩特性, 开采沉陷, 三轴压缩试验, 数值模拟

Abstract: In order to study the compression characteristics of super-thick alluvium and its influence on mining subsidence,triaxial compression tests were conducted on the surface cohesive soil in Jiaozuo mining area.Based on the experimental results,a numerical simulation of the mining subsidence of a certain working face under super-thick alluvium was performed.Mechanism of surface subsidence under super-thick alluvium was also analyzed theoretically.The results show that there is a compression phenomenon in alluvium and the compression amount increases with the increase of the thickness of alluvium,resulting in an increase in surface subsidence,and that the self-compression characteristics of the alluvium are the main factor resulting the large subsidence of surface when mining under super-thick alluvium.

Key words: super-thick alluvium, soil compression characteristics, mining subsidence, triaxial compression test, numerical simulation

中图分类号:

X936

李新岭, 郭文兵, 赵高博. 巨厚松散层土体压缩特性对开采沉陷影响研究[J]. 中国安全科学学报, 2018, 28(7): 135-141.

LI Xinling, GUO Wenbing, ZHAO Gaobo. Study on influence of compression characteristics ofsuper-thick alluvium on mining subsidence[J]. China Safety Science Journal, 2018, 28(7): 135-141.

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巨厚松散层土体压缩特性对开采沉陷影响研究

Study on influence of compression characteristics ofsuper-thick alluvium on mining subsidence

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