Theoretical analysis of the secondary development of mining-induced surface cracks in the Ordos region

被引:17
|
作者
Xu, Yuankun [1 ]
Wu, Kan [1 ]
Bai, Zhihui [2 ]
Hu, Zhenqi [3 ]
机构
[1] China Univ Min & Technol, Sch Environm Sci & Spatial Informat, Xuzhou 221116, Peoples R China
[2] Jizhong Energy Grp Co Ltd, Fengfeng Grp, Handan 056000, Peoples R China
[3] China Univ Min & Technol Beijing, Inst Land Reclamat & Ecol Restorat, Beijing 100083, Peoples R China
关键词
Coal mining; Ground subsidence; Soil mechanics; Aeolian region; SUBSIDENCE;
D O I
10.1007/s12665-017-7050-6
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Prior studies have indicated that mining-induced surface dynamic cracks in eastern China only undergo one "expanding-closure" development cycle. However, field measurements from the Bulianta mines of northwestern China demonstrated that ground dynamic cracks in the Ordos region went through two "expanding-closure" cycle. Using in situ measurement data and theoretical analysis, we find that the strata control theory cannot reasonably explain this special phenomenon. In this paper, we propose a novel explanation from the perspective of soil mechanics. A comparison of two field examples in eastern and northwestern China demonstrates that our theoretical explanation is in agreement with in situ observations and therefore is a reasonable interpretation for the secondary development of ground dynamic cracks in the Bulianta mines. This study provides a theoretical basis for the mechanism of mining-induced ground dynamic cracks.
引用
收藏
页数:9
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