Research on Coal Mine Goaf Restoration Based on Stability of Overlying Rocks and Numerical Simulation Analysis: A Case Study of Jingmen Garden Expo Park

Zaicheng Xu, Wei Xu (), Peng Zhou, Zhenhua Zhu, Junyi Zhao and Peng Gao
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Zaicheng Xu: School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430074, China
Wei Xu: School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430074, China
Peng Zhou: School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430074, China
Zhenhua Zhu: School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430074, China
Junyi Zhao: School of Urban Design, Wuhan University, Wuhan 430072, China
Peng Gao: School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430074, China

Sustainability, 2023, vol. 15, issue 2, 1-26

Abstract: Goaf restoration is an important part of urban space management. With mining of coal resources, appearance of goaf and subsidence areas causes serious geological disasters and environmental and ecological problems, which significantly affect urban safety, development, and construction. Therefore, repair of goafs is crucial. In this study, the goaf of Jingmen Garden Expo Park was taken as an example. Through acquisition of engineering geological condition parameters and data on the goaf combined with the mechanical parameters selected for the site, the deformation mechanism of the overlying strata of the goaf was analyzed, and a numerical model of the goaf was established. On this basis, FLAC(3D) was used for numerical simulation to evaluate the stability of the goaf; the suitability of the site was evaluated and divided, and the ecological restoration model of the goaf in Jingmen Garden Expo Park was studied. The results showed that different degrees of ecological restoration and construction of various facilities and buildings could be carried out in the goaf. Based on the varying degrees of stability in the goaf, an appropriate restoration path is suggested according to the suitability of these different degrees. The green, innovative, and sustainable restoration design of the goaf can be carried out according to these restoration paths in order to establish a green ecological system in Jingmen Garden Expo Park.

Keywords: goaf; stability of overlying rock; numerical simulation; suitability evaluation; ecological restoration design (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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