Soil column simulation experiment device aiming at reclaimed soil and coal ash matrix in mining area

Abstract

The invention discloses a soil column simulation experiment device aiming at reclaimed soil and coal ash matrix in a mining area. The soil column simulation experiment device comprises a transparent column body, a plurality of flange disks, a movable plate, a stainless steel wire gauze, a base disk, a bracket and an underground water level simulation component, wherein the base disk is fixed at one end of the column body; the bracket is connected with the base disk; the column body has a multi-section structure and consists of a plurality of sub column bodies; two adjacent sub column bodies are fixedly connected by one of the flange disks; the movable plate and the stainless steel wire gauze are accommodated in a groove of the flange disk close to the bottom; and the underground water level simulation component is connected to the bottom of the base disk. The soil column simulation experiment device has the advantages that when capillary water rises, experiments such as soil water and salt movement under an atmosphere rainfall condition, soil water and salt movement under an evaporation condition and soil water and salt movement under an underground water level change control condition can be simulated; and the water and salt movement in the coal ash matrix of the reclaimed soil filled by the mining area coal ash can be dynamically observed through the device, so that a reclaiming mode suitable for crop growth can be found out.

Description

technical field

[0001] The invention relates to a simulation experiment device for a coal mine area, in particular to a soil column simulation experiment device aimed at reclamation soil and fly ash matrix in a mine area. Background technique

[0002] Land reclamation technology refers to the action or process of restoring or restoring some or all of the ecological functions by taking restorative ecological engineering measures for the excavation damage, subsidence, occupation and other land damage caused by the production and construction process. Land reclamation for the purpose of improving soil fertility and biological productivity in waste dumps, tailing ponds, and urban quarries. At present, the reclaimed land has problems such as low crop yield and low quality of reclaimed soil. Improving the comprehensive utilization benefits of land consolidation and properly handling the relationship between land consolidation and coal production is the key to the sustainable deve...

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