Research on the collaborative deformation law of mining surface and transmission line tower slab foundation

被引：0
|
作者：
Zhao B. [1 ,2 ]
Zhao Y. [1 ]
Feng J. [1 ]
Wang J. [1 ]
Feng X. [1 ]
机构：
[1] College of Energy Engineering, Xi'an University of Science and Technology, Shaanxi, Xi'an
[2] Key Laboratory of Western Mine Exploitation and Hazard Prevention, Ministry of Education, Xi'an University of Science and Technology, Shaanxi, Xi'an
来源：
Caikuang yu Anquan Gongcheng Xuebao/Journal of Mining and Safety Engineering | 2024年 / 41卷 / 03期
关键词：
collaborative deformation; mining-induced surface deformation; probability integral; slab foundation; transmission line tower;
D O I：
10.13545/j.cnki.jmse.2022.0430
中图分类号：
学科分类号：
摘要：
To ensure the safe operation of the transmission line tower in the mining area under mining influence, the cooperative deformation law of the mining surface and the large slab foundation of the transmission line tower were investigated through theoretical analysis and numerical simulation. Taking the large slab foundation of a transmission line tower overlying a working surface as the research object, based on the failure patterns of the foundation, the mechanical model of the slab foundation was established. The collaborative deformation relationship between the ground surface and the foundation at the tensile (compression, neutral) zone was derived based on the probability integral method. Theoretical analysis indicated that the key parameters of foundation deformation due to mining could have foundation elastic modulus (Ej), soil Poisson's ratio (滋), foundation root opening (bt), soil elastic modulus (E), tower self-weight (P), and foundation section inertia (Iy). Foundation horizontal deformation εj expressed a negative correlation with Ej and 滋. Still, it expressed a positive correlation with surface horizontal deformation ε, bt and E. Foundation tilt deformation ij expressed positive correlation with surface tilt deformation i, P and bt. Still, it behaved negative correlation with Ej and Iy. Numerical simulation demonstrated a decreasing sequence regarding horizontal foundation deformation at different zones, namely deformation value at the tensile zone was the highest, followed by the value at the compression zone and that at the neutral zone. © 2024 China University of Mining and Technology. All rights reserved.
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页码：472 / 480
页数：8
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