Spatial Pattern Reconstruction of Water and Land Resources in Coal Mining Subsidence Areas within Urban Regions

Xiaojun Zhu (), Feng Zha, Hua Cheng, Liugen Zheng, Hui Liu, Wenshan Huang, Yu Yan, Liangjun Dai, Shenzhu Fang and Xiaoyu Yang
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Xiaojun Zhu: Anhui Province Engineering Laboratory for Mine Ecological Remediation, Anhui University, Hefei 230601, China
Feng Zha: Anhui Province Engineering Laboratory for Mine Ecological Remediation, Anhui University, Hefei 230601, China
Hua Cheng: Anhui Province Engineering Laboratory for Mine Ecological Remediation, Anhui University, Hefei 230601, China
Liugen Zheng: Anhui Province Engineering Laboratory for Mine Ecological Remediation, Anhui University, Hefei 230601, China
Hui Liu: Anhui Province Engineering Laboratory for Mine Ecological Remediation, Anhui University, Hefei 230601, China
Wenshan Huang: Huaibei Bureau of Natural Resources and Planning, Huaibei 235000, China
Yu Yan: Huaibei Bureau of Natural Resources and Planning, Huaibei 235000, China
Liangjun Dai: Anhui Construction Engineering Group Corporation Limited, Hefei 230031, China
Shenzhu Fang: Anhui Construction Engineering Group Corporation Limited, Hefei 230031, China
Xiaoyu Yang: Department of Engineering Management, Hefei College of Finance and Economics, Hefei 231299, China

Sustainability, 2022, vol. 14, issue 18, 1-24

Abstract: Water and land resources are important material bases of economic and social development, and their spatial patterns determine the pattern of the urban development. The development and expansion of coal-resource-based cities have introduced new societal problems, such as the overlapping of new city construction areas and underground coal resources. Underground coal mining also leads to surface subsidence, which destroys water and land resources and seriously affects the sustainable development of coal-resource-based cities. The surface subsidence area takes a long time to stabilize, and may form a large waterlogging area due to the high groundwater level, thereby increasing the difficulty of reconstructing mining subsidence areas. In this context, a scientific and complete method for reconstructing the spatial pattern of water and land resources in unstable coal mining subsidence areas within urban is proposed in this paper. This method initially predicts the surface subsidence value and then divides the subsidence area within the urban region into the waterlogging area and the non-waterlogging area according to the surface subsidence value. The waterlogging area will be renovated into a landscape lake district in the city by a series of transformation measures. Afterwards, goaf rock mass activation and surface stability evaluation analyses are performed in the non-waterlogging area. According to the evaluation results, land resources can be divided into unaffected, restricted and prohibited building areas, with each area being transformed differently. The Lv Jin Lake in Huaibei is selected as a case study, and the proposed method is applied to reconstruct its water and land resources. The original spatial pattern of the large-scale waterlogging area and abandoned land due to mining subsidence in urban areas is then reconstructed into a spatial pattern that integrates the urban landscape, scenario living and eco-tourism. Compared with traditional subsidence area management, the proposed method greatly increases the utilization value of water and land resources, improves the urban ecological environment, enhances the urban quality and effectively alleviates the problems of land shortage and human–land conflict in coal-resource-based cities.

Keywords: surface subsidence; subsidence waterlogging; urban sustainability; water and land resources; spatial pattern reconstruction (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2022
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