Abstract:
The implementation of agricultural land protection before coal mining subsidence in high ground-water level area is constrained by various factors and requires systematic decision-making.This paper constructs the agricultural land protection technology system and analysis its limiting factors in high ground-water level area, and builds a progressive decision framework.The research shows that the technologies for protecting farmland before coal mining subsidence in high ground-water level area include terrace consolidation, drainage, advanced filling, and digging deep to fill shallow.The main limiting factors include subsidence water logging, drainage conditions, filling materials and land planning.The implementation of protection technology also needs to consider influencing factors such as construction conditions, capital investment, and land quality.Peibei mining area is in the late stage of coal mining.From 2020 to 2030, an additional coal mining subsidence area of 2 300 hm
2, mainly mild to moderate subsidence which is conducive to the implementation of various protective projects, and has a large potential of reduction of agricultural land loss and upgrading.The study can provide reference for the protection of agricultural land before coal mining subsidence in the coal-grain overlapping area in eastern China.