Study Of Land Restoration In The Wangzhuang Coal Mine

This paper takes Wangzhuang mine of Lu'an coal mine,Shanxi province as the research object.On the basis of systematically analyzing the present situation of land reclamation at home and abroad,the paper analyzes the influence of land destruction on the surface environment,groundwater and topography,the feasibility of land reclamation in the study area was analyzed from the the perspective of reclamation potential and reclamation benefit.Combined with the actual situation of Wangzhuang mine,the evaluation index system and evaluation criteria of land reclamation suitability are established in four directions of cultivated land?proper garden?woodland and fishery.Using the AHP based on extension theory,the weights of the suitability evaluation indexes are allocated.By choosing the membership function of trapezoid distribution to calculate the membership degree of evaluation index,the mathematical model of suitability evaluation for land reclamation of Wangzhuang mine is established.By using fuzzy comprehensive evaluation method for reclamation of land suitability evaluation.According to the evaluation results,Woodland and fisheries most suitable for land reclamation,followed by arable land and garden.In view of the suitability evaluation results,ecological rehabilitation measures were carried out by land leveling,soil restructuring,biological improvement and chemical improvement.