Evaporation-infiltration controllable ecological restoration system for mine filling field in arid region

Abstract

The invention provides an evaporation-infiltration controllable ecological restoration system for a mine filling field in an arid region, which comprises a water retention-water storage covering subsystem, a water storage layer, an evaporation-preventing layer and a concrete frame structure, which are sequentially arranged outwards along the surface layer of the mine filling field, and a water retention-water storage covering subsystem, which covers the surface layer of the mine filling field and comprises an anti-seepage layer, a water storage layer, an evaporation-preventing layer and a concrete frame structure, which are sequentially arranged outwards along the surface layer of the mine filling field; the intelligent under-layer drip irrigation subsystem is connected with the water retention-water storage covering subsystem, supplies water and comprises a drip irrigation pipe network, a plurality of sensing assemblies, a controller, a water storage tank and an electric water gate, the drip irrigation pipe network is arranged between the water storage layer and the anti-evaporation layer, and the sensing assemblies are correspondingly arranged in the water storage layer and the anti-evaporation layer and used for executing detection actions; the detection action is used for detecting soil parameters such as matrix suction, moisture content and temperature representing the water storage layer and the anti-evaporation layer, the controller is used for controlling the sensing assembly to perform the detection action and obtain the soil parameters, and meanwhile, the opening and closing states of the electric water gate are controlled by performing program calculation on the soil parameters.

Description

technical field [0001] The invention belongs to the technical field of mine ecological restoration, in particular to a controllable transpiration-seepage ecological restoration system for mine landfills in arid areas. Background technique [0002] Traditional mine ecological restoration methods generally directly use a certain thick soil layer and then plant plants. During rainfall or artificial irrigation, due to the high soil permeability, water can easily enter the soil layer, penetrate the soil layer, and enter the interior of the landfill, so the traditional method has limited water storage capacity. And due to the great soil permeability, the water in the soil is easy to evaporate, and the water use efficiency is extremely low. In order to solve the above problems, it is proposed in the prior art to add 20-30% soil, 10-20% peat soil, 10-15% vermiculite, 10-15% high molecular polymer, and 10-15% bentonite to the repair substrate. %, and then increase the water storage...

AI Technical Summary

Problems solved by technology

During rainfall or artificial irrigation, due to the high permeability of the soil, water can easily enter the soil layer, penetrate the soil layer, and enter the interior of the landfill, so the traditional method has limited water storage capacity.

Moreover, due to the great permeability of the soil, the water in the soil is easy to evaporate, and the water use efficiency is extremely low.

In order to solve the above problems, it is proposed in the prior art to add 20-30% of soil, 10-20% of peat soil, 10-15% of vermiculite, 10-15% of high molecular polymer, and 10-15% of bentonite to the restoration substrate. %, and then increase the water storage and water retention capacity of the substrate layer. This simple material modification is difficult to effectively reduce the evaporation rate of the substrate, and high-quality soil is scarce in arid areas. A large number of materials such as polymers and bentonite will cause Substantial increase in engineering costs

In addition, the irrigation method was not considered when the technology was in service. Due to the lack of quantitative reference, the common irrigation method is prone to water loss or insufficient irrigation, which is not conducive to water saving and energy saving.

Among the schemes disclosed in the prior art, it is proposed to set up ecological intercepting ditches inside each level of slope protection platform, and set up grit chambers and water collection ditches at certain distances, so that the runoff generated on the slope surface during rainfall can be rationally utilized , but rainfall is scarce all year round in arid areas, and it is difficult for gutters to effectively store water

It is also proposed to lay geomembrane and other anti-seepage layers in the soil layer to block the infiltration of water and improve the water storage capacity of the soil. It is difficult for the structure to effectively store water

[0003] That is to say, in the mine ecological restoration technology proposed in the prior art, there are still technical problems such as the lack of high-quality clay in arid areas, the poor water retention and storage effect of the cover layer, and the difficult coexistence of high permeability and low evaporation properties;

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