Research On The Ecological Restoration Technology Of An Abandoned Open Quarry

This paper mainly studies the ecological restoration technology of an abandoned open quarry.On the basis of extensive references at home and abroad,this paper summarizes the research results of ecological restoration technology of abandoned open-pit quarry,and analyzes the main problems existing at present.Through the survey,the geological environment problems of the mining area,such as geological disaster,water and soil pollution,landform landscape and land resources damage,are figured out.In particular,the problems of unstable slope reinforcement and ecological restoration of open pit,ecological restoration of high and steep hard rock slope,disposal of a large number of waste slag in waste dump are salient,making it difficult to control geological disaster and ecological restoration.Based on the analysis of the main factors affecting the management of geological hazards and ecological restoration,the slopes are classified according to slope angle,slope height,lithology,and stability.At the same time,corresponding disaster control and ecological measures are proposed for different types of slope Recovery mode.Based on the principles of system engineering,this paper determines the main body plan for the restoration and management of the abandoned quarry: Large swallow trough,reclamation of abandoned land,ecological greening.This plan aims to improve the geological environment of the mine and boost the creation of ecological industry in the later period.Meanwhile,this paper also lays out the overall arrangement of the restoration and treatment plan.On the one hand,the plan organically integrates the management of mine geological hazards,disposal of abandoned slag,and ecological restoration,which effectively avoids the overuse,in the restoration and management work of mine geological environment,of rigid supports such as concrete,mortar,and stone,which will causes inharmony with local rural landscape.On the other hand,it also maximizes the use of land resources and gives full play to the ecological service functions after treatment,ensuring the concept of "zero-emission" ecological and environmental protection governance that balances "cleaning,cutting,digging and filling" being fully put through.In order to solve the problem of a large number of abandoned slags in the unstable slope of the open-pit mining pit and the dumping ground,this paper proposes a composite model of "construction counter pressure" disaster relief and ecological greening and analyzes its technical methods and rationales.This technology can not only effectively reduce the height and slope gradient of the slope,completely guaranteeing the long-term stability of the unstable slope,but also consume a lot of mine waste slag,which is very conducive to the ecological greening of the slope and maintain the long-term greening effect.Given the habitat characteristics of high and steep hard rock slopes and the difficulties of ecological restoration,based on the principles of ecological engineering and the principle of "adjusting to local conditions,being naked or bare as possible," this paper puts forward the full use of micro-topography to build a "big swallow trough" ecological landscape restoration Model and construct the structure of the trough and soil layer and the maintenance system.This technology can not only effectively overcome the problems of traditional swallow trough vegetation,such as the lack of natural water retention and poor fertility,and poor long-term greening effects,but also greatly promote the plant to enter the natural growth period without artificial intervention and self-derivation as soon as possible,thus reducing manual workload.The ecological restoration technology of the abandoned open-air quarry can provide a reference model for similar mines.