倾斜底板非对称底鼓灾变机理及灾变模式研究

doi:10.19286/j.cnki.cci.2024.01.001

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Abstract Asymmetrical floor heave disaster is easy to occur in deep inclined floor with high in-situ stress. The combined finite-discrete element numerical method (FDEM) was used to study the mechanism and mode of asymmetric floor heave disaster in inclined floor strata, and the influence of dip angle was also investigated. The results showed that: ①The stress-driven floor heave mechanism could be interpreted as the progressive fracture-swelling-squeezing deformation; annular tangential concentrated stress was the driving source;②When the dip angle wa 15°~30°, the asymmetric floor heave was obvious; when the dip angle was 45°~75°, the asymmetry feature ws weakened; however, when the inclination angle was 0° or 90°, the floor heave was symmetrical.

Key words： asymmetric floor heave inclined floor surrounding rock the combined finite-discrete element method fracture propagation large deformation

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	Jia Yongjie

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Jia Yongjie. Study on disaster mechanism and disaster mode of asymmetric floor heave in inclined floor[J]. CCI, 2024, 47(1): 1-7，11..

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http://www.mtyhg.com.cn/EN/10.19286/j.cnki.cci.2024.01.001 OR http://www.mtyhg.com.cn/EN/Y2024/V47/I1/1

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