期刊
ENVIRONMENTAL EARTH SCIENCES
卷 76, 期 20, 页码 -出版社
SPRINGER
DOI: 10.1007/s12665-017-7050-6
关键词
Coal mining; Ground subsidence; Soil mechanics; Aeolian region
资金
- Natural Science Foundation of China
- Shenhua Group Co., Ltd [U1361203]
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.
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