Energy dissipation feature and rock burst risk assessment
in coal-rock combinations

XIAO Xiao-chun; FAN Yu-feng; WU Di; DING Xin; WANG Lei; ZHAO Bao-you

doi:10.16285/j.rsm.2018.192

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Energy dissipation feature and rock burst risk assessment in coal-rock combinations

更新时间：2026-06-25

- Energy dissipation feature and rock burst risk assessment in coal-rock combinations
- Vol. 40, Issue 11, (2019)
- 作者机构：
  
  1. 绍兴文理学院土木工程学院,浙江,绍兴,312000
  2. 绍兴文理学院浙江省岩石力学与地质灾害重点实验室,浙江,绍兴,312000
  3. 辽宁工程技术大学力学与工程学院,辽宁,阜新,123000
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2018.192
  CLC： TU45
- Online First：12 November 2019，
  
  Published：2019
- 稿件说明：
移动端阅览
XIAO Xiao-chun, FAN Yu-feng, WU Di, et al. Energy dissipation feature and rock burst risk assessment in coal-rock combinations[J]. 2019, 40(11).
DOI：

XIAO Xiao-chun, FAN Yu-feng, WU Di, et al. Energy dissipation feature and rock burst risk assessment in coal-rock combinations[J]. 2019, 40(11). DOI： 10.16285/j.rsm.2018.192.

摘要

为揭示组合煤岩失稳破坏过程中的能量耗散规律，通过组合煤岩单轴压缩试验，从能量角度对组合煤岩失稳特征进行了分析。引入分形理论，研究了声发射信号与煤岩破坏程度之间的关系，以及不同组合结构对组合煤岩破坏过程的能量耗散的影响，提出一种利用煤岩结构力学特性判定冲击危险的方法。结果表明：随组合煤岩顶板岩石高度增加，试样整体强度和弹性模量增加，峰后应变软化过程缩短；岩石高度的增加，岩石与煤的弹性模量差值的减小均会导致冲击危险增加；通过对组合煤岩中岩石和煤的高度及其力学性质分析，提出了组合煤岩冲击倾向性判定指数，利用冲击倾向性判定指数对组合煤岩冲击危险进行评价，其准确度和实用性优于传统模糊判定的“四指标”方法，为深入开展煤岩组合结构冲击倾向评价提供了试验和理论支持。

Abstract

To explore the energy dissipation of coal-rock combinations failure

uniaxial compression experiments were conducted to investigate the failure process characteristics in terms of the energy. Meanwhile

the relationships of failure and acoustic emission signal were discussed based on fractal dimension. Method for evaluating the risk of rock burst was proposed

based on the investigation of the different combination structures influence on energy dissipation of coal-rock combination. The results show that when the rock height increases

the strength and elastic modulus increase

and the softening process decreases. The raise of rock height could increase the impact risk

as well as the reduction of difference between the elastic modulus of rock and coal. In addition

a new decision method was proposed based on the analyses of height and mechanical properties of coal-rock combination

compared with the “four index” of traditional fuzzy evaluation. The result of assessing the rock burst index by the decision method has higher accuracy and practicability. These results provide the data and theoretical support for further development study of rock burst risk in coal-rock combinations.

关键词

Keywords

references

Views

259

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Acoustic emission and failure early warning characteristics of cemented tailings backfill with different fly ash dosages

Mechanical response and macro and micro failure mechanism of water-bearing coal samples with different loading rates

Acoustic emission of sandstone with hydro-mechanical coupling and PFC-based modelling of energy dissipation

Strength and failure modes of shale based on Brazilian test

Study of fractal and damage characteristic in the deformation and failure process of salt rack based on acoustic emission

Related Author

ZHAO Kang

HUANG Qi-zheng

SHI Yi-chen

MA Chao

FENG Yin-cheng

TIAN Xiang-qin

LIU Lang

XU Qing-zhao

Related Institution

Solids Waste and Chemicals Management Center, Ministry of Ecology and Environment

School of Civil and Surveying & Mapping Engineering, Jiangxi University of Science and Technology

Zhangzhou Vocational Institute of Technology

College of Energy Engineering, Xi’an University of Science and Technology

School of Mining Engineering, Anhui University of Science and Technology

AI问答

⁰