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中南大学学报(自然科学版)

Journal of Central South University

第48卷    第11期    总第279期    2017年11月

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文章编号:1672-7207(2017)11-2990-08
西部生态脆弱区地表开采损害特征
赵兵朝1, 2,同超1, 2,刘樟荣1, 2,刘浪1, 2,余学义1, 2

(1. 西安科技大学 能源学院,陕西 西安,710054; 2. 西安科技大学 教育部西部矿井开采及灾害防治实验室,陕西 西安,710054)

摘 要: 为进一步揭示西部生态脆弱区地表开采损害特征形成的机理,在分析影响生态脆弱区地表开采损害特征主要因素(开采深度、开采高度、基岩厚度、载荷层厚度以及坡体自身稳定性)的基础上,研究生态脆弱区厚松散层薄基岩、黄土沟壑及山区丘陵下煤层开采的地表损害特征,并以基采比(基岩厚度与开采高度之比,JC)和基载比(基岩厚度与载荷层厚度之比,JZ)为关键参数,揭示生态脆弱区煤层开采损害特征形成的机理。研究结果表明:以基采比和基载比为基础,结合坡体稳定性引起的附加量,能够有效地分析西部生态脆弱区的开采损害特征,为进一步揭示该区域煤层开采地表损害特征的形成机理提供了依据。

 

关键字: 生态脆弱区;开采损害;基采比;基载比;坡体稳定性

Characteristics of mining-induced surface damage in western ecological fragile region
ZHAO Bingchao1, 2, TONG Chao1, 2, LIU Zhangrong1, 2, LIU Lang1, 2, YU Xueyi1, 2

1. School of Energy, Xi’an University of Science and Technology, Shaanxi, Xi’an 710054, China; 2. Key Laboratory of Western Mine Exploitation and Hazard Prevention of the Ministry of Education, Xi’an University of Science and Technology, Shaanxi, Xi’an 710054, China

Abstract:To reveal the formation mechanism of mining-induced surface damage characteristics in the western ecological fragile region, the characteristics of surface damage under conditions of thick alluvium with thin bedrock, and loess ravine and mountain and hills were studied based on the analysis of affecting factors such as mining depth, mining height, bedrock thickness, overburden thickness and slope stability. The ratio of bedrock thickness and mining height (JC), the ratio of bedrock thickness and overburden thickness (JZ), and the slope stability were employed as key parameters to reveal the formation mechanism. The results show that using JC and JZ, combined with slip additional amount caused by slope stability, the mining damage characteristics of the western ecological fragile area can be effectively analyzed. This study provides a basis to reveal the formation mechanism of mining-induced surface damage characteristics in the western ecological fragile region.

 

Key words: ecological fragile region; mining-induced surface damage; ratio of bedrock thickness and mining height (JC); ratio of bedrock thickness and overburden thickness (JZ); slope stability

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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