Academic Journal of Engineering and Technology Science, 2024, 7(1); doi: 10.25236/AJETS.2024.070102.

## Prediction of surface subsidence in Gequan coal mine based on probability integral and numerical simulation

Author(s)

Jianfei Zhang1, Pengpeng Zhang1, Xuan Ji1, Yanheng Li1,2,3

Corresponding Author:
Yanheng Li
Affiliation(s)

1School of Earth Science and Engineering, Hebei University of Engineering, Handan, 056038, China

2Key Laboratory of Resource Exploration Research of Hebei Province, Hebei University of Engineering, Handan, 056038, China

3Hebei Collaborative Innovation Center of Coal Exploitation, Hebei University of Engineering, Handan, 056038, China

### Abstract

The goaf produced by underground mining will produce subsidence on the surface, which will threat to the overlying buildings. In order to study surface subsidence, probability integral method and FLAC3D numerical simulation method were adopted to simulate and predict the coal seam mining in Gequan Mine. The results showed that the subsidence decreased gradually from the center of the goaf to both ends, from the underlying strata to the surface, and the result of probability integral calculation was slightly larger than that of numerical simulation. However, in the case of fully considering complex strata and insufficient mining, numerical simulation can better reflect the real situation in the mining surface subsidence of Gequan Mine, which has good reference significance.

### Keywords

Goaf, Probability integral method, Numerical simulation method, Surface subsidence

### Cite This Paper

Jianfei Zhang, Pengpeng Zhang, Xuan Ji, Yanheng Li. Prediction of surface subsidence in Gequan coal mine based on probability integral and numerical simulation. Academic Journal of Engineering and Technology Science (2024) Vol. 7, Issue 1: 8-15. https://doi.org/10.25236/AJETS.2024.070102.

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