Stability Evaluation of an Expressway Construction Site above an Abandoned Coal Mine Based on the Overlay and Index Method

Qingbiao Guo, Guangli Guo, Yingming Li, Lei Wang and Xingwang Zhao
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Qingbiao Guo: School of Geomatics, Anhui University of Sciences and Technology, No. 168 Taifeng Road, Huainan 232001, China
Guangli Guo: School of Environment Science and Spatial Informatics, China University of Mining and Technology, No.1 University Road, Xuzhou 221116, China
Yingming Li: School of Mining and Safety Engineering, Anhui University of Sciences and Technology, No.168 Taifeng Road, Huainan 232001, China
Lei Wang: School of Geomatics, Anhui University of Sciences and Technology, No. 168 Taifeng Road, Huainan 232001, China
Xingwang Zhao: School of Geomatics, Anhui University of Sciences and Technology, No. 168 Taifeng Road, Huainan 232001, China

Sustainability, 2019, vol. 11, issue 19, 1-19

Abstract: In recent years, more and more expressways pass through the abandoned coal mine, while the surface residual subsidence of the abandoned coal mine threatens the operation safety of the expressway. It is of significance to evaluate the stability of the construction site and take reasonable managements for effectively guaranteeing the traffic safety. How to accurately evaluate the stability of the construction site is the primary problem. This study proposes a stability evaluation model using the overlay and index method and points out that the evaluation scores and weights of evaluation indices are key parameters to determine the reliability of evaluation results. To reasonably determine the evaluation score, the scoring criteria of qualitative indices is obtained by the equidistant method, while the scoring criteria of quantitative indices is obtained by establishing scoring functions. The weights of evaluation indices are got by adopting the FAHP (fuzzy analytic hierarchy process). Then the built model is applied to evaluate the stability of the Wuyun Expressway construction site, and the results show that the Wuyun Expressway construction site is basic stable. Finally, the sensitivity of indices weights on the evaluation result is analyzed with the maximum C k ( C m , p c ) of 5.9% far lower than the weight change of ±30%, and the average residual subsidence velocity of the maximum subsidence point is 0.0456 mm/d using a high-resolution leveling, proving the credibility of the proposed model. Research results provide new ideas and systematic technical references for the stability evaluation of the construction site above an abandoned coal mine.

Keywords: stability evaluation; expressway; abandoned coal mine; the overlay and index method (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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