Coal gangue leachate infiltration soil column simulation system and characteristic parameter determination method

Abstract

Provided are a coal gangue leachate infiltration soil column simulation system and a characteristic parameter determination method. The simulation system comprises a bottom member, one or more soil column experiment standard members which are connected to the bottom member in series and multiform coal gangue leachate supply simulation systems on the tops of the soil column experiment standard members; simulation system soil loading members are multiple standard members and are subjected to automation control through a computer, determination of characteristic parameters is achieved based on the system, determining steps and a calculation method are provided, when determination is conducted, large-diameter undistributed soil columns are adopted for conducting an indoor experiment, and the multiform coal gangue leachate supply simulation systems are used for simulating four hydraulic boundary conditions, namely, a low strength coal gangue leachate all filtration boundary condition, a medium strength coal gangue leachate runoff filtration boundary condition, a high strength coal gangue leachate stable filtration boundary condition and a coal gangue leachate melt filtration boundary condition. The coal gangue leachate infiltration soil column simulation system and the characteristic parameter determination method have the advantages of being high in practicability, good in use effect and convenient to apply and popularize.

Description

technical field [0001] The invention belongs to the field of environmental protection in mining areas, and in particular relates to a soil column simulation system for coal gangue leachate infiltration and a method for measuring characteristic parameters. Background technique [0002] Precipitation mainly refers to rainfall and snowfall. Moisture reaches the ground from the atmosphere in various forms. Other forms of precipitation include dew, frost, hail, etc. Precipitation is an important part of the hydrological cycle and the basic source of water for human beings. Precipitation data is the basis for analyzing reasonable flood and drought conditions and basin drought conditions, and is also the basis for the planning, design, management and application of water resources development and utilization, such as flood control, power generation, irrigation, etc. The process of precipitation infiltration to recharge groundwater is one of the most basic links in the "three water...

AI Technical Summary

Problems solved by technology

No matter what kind of soil column is used for the test, there are still the following problems: ① The length of the single section of the soil-loading component in the soil column experiment is large, and the convenience is poor, so that the installation of the soil column is difficult, which causes inconvenience to the cleaning of the instrument; ② The installation of monitoring equipment is cumbersome and requires Drill holes in the soil column to destroy its structure; ③The monitoring equipment is generally manual observation, which makes the experiment accuracy low and artificial

However, due to the differences in the composition, structure and environment of unsaturated soil, it is difficult for the small specimens used in indoor experiments to represent the actual situation of the real soil.

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