基于AE的深部復變環境下急斜特厚煤層開采動力失穩分析

張立杰; 蔡美峰; 來興平; 張勇; 張海燕; 呂兆海; 任奮華

doi:10.13374/j.issn1001-053x.2007.01.001

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基于AE的深部復變環境下急斜特厚煤層開采動力失穩分析

doi: 10.13374/j.issn1001-053x.2007.01.001

張立杰^1,2,
蔡美峰¹,
來興平^2,3,
張勇^2,3,
張海燕²,
呂兆海^2,3,
任奮華¹

1. 北京科技大學土木與環境工程學院, 北京 100083;
2. 西安科技大學, 西安 710054;
3. 教育部西部礦山開采及災害控制重點實驗室, 西安 710054

基金項目:

國家自然科學基金資助項目(No.10402033,50490271)

教育部西部礦山開采與災害控制重點實驗室重點資助項目(No.04JS19)

詳細信息

作者簡介:
張立杰(1966-),男,副教授,博士研究生;蔡美峰(1943-),男,教授,博士生導師

中圖分類號: TD353;TB125
計量
- 文章訪問數: 141
- HTML全文瀏覽量: 54
- PDF下載量: 6
- 被引次數: 0
出版歷程
- 收稿日期: 2006-02-28
- 修回日期: 2006-05-22
- 網絡出版日期: 2021-08-16

Dynamical destabilization analysis of steep and heavy thick coal seam in a deep-mine under the complex-variable environment based on AE

1. Civil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083, China;
2. Xi'an University of Science and Technology, Xi'an 710054, China;
3. Key Lab for Western Safe Mining & Hazard Control, the Ministry of Education of China, Xi'an 710054, China

摘要

摘要: 華亭煤礦5^#煤是賦存在深部的急斜特厚煤層,其開采擾動極其頻繁,最大主應力與最小主應力相差較大,開采過程中頻繁出現動力失穩并誘致衍生災害.基于聲發射的煤巖動力失穩行為實驗與現場相關測試的比較,綜合分析了復雜變化環境下煤巖在不同的動態拉伸比能、壓縮變形阻力和剪切應力作用下的失穩聲發射能率和總事件等定量規律.
- 特厚煤層 /
- 聲發射(AE) /
- 復變環境 /
- 大尺度采空區 /
- 動力失穩
Abstract: The No. 5 coal of Huating Coal Mine in China is a deep and heavy thick coal seam. In the coal seam, the dependence of excavation and disturbance is very serious, the difference between the maximum and minimum principal stress levels is greater, and there are frequent destabilizations leading to hazards during min-ing. Based on the comparison of the acoustic emission (AE) experiment of coal-rock unstable crack propagation and destabilization with their in-situ measurement, this paper investigated the regularity of various dynamics load and comprehensively analyzed the quantificational destabilization characters including variable dynamical specific energy of tension, resistance to compression, and proportional limit of shear under the complex-variable excavation and geological environment.
- heavy thick coal seam /
- acoustic emission (AE) /
- complex-variable environment /
- large scale mined-out area /
- dynamical destabilization