Restoration of Water System in Coalmine Subsided Area with Higher Level of Underground Water — Taking Jiawang Mining Area of Xuzhou as an Example in China

Abstract:

Due to long-term coal mining, causing ground collapse and water system damage. Therefore, it is necessary to restore the water system in coalmine subsided area with higher level of underground water and put forward the unified mode of restoration. On the basis of investigation and study, through inquiring a large number of references, the study area is divided into two functional areas: Fertile farm belt and Ecological control area. Ecological control area is further divided into deep water ecological lake area, ecological island area and shallow water planting areas. This classification not only make the water resource allot scientifically, but also realize the stereoscopic development. Meanwhile, based on the division of functional areas, it strengthens surface water, groundwater and soil water restoration to realize the restoration of water system. By building an embankment and repairing irrigation and drainage facilities to remove water logging, realizing the restoration of surface water. Establish drainage system with deep and dense ditches, to reduce the groundwater level and prevent crops staying in water for long time. Finally, put forward a filling mode, which the clay-coal gangue, coal ash and sludge are mixed in appropriate proportion when filling soil, to improve the soil reclamation filling. This mode can realize the migration of soil moisture to promote crop growth and improve the output of the land.

• Periodical: Advanced Materials Research (Volumes 518-523)
• Pages: 4227-4232
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.518-523.4227
• Online since: May 2012
• Authors: Xin Feng Li, Jin Man Wang, Ke Ning Wu
• Keywords: Higher Level of Underground Water, Land Reclamation, Land Subsidence, Water System Restoration.

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