Temperature control-pressure control underground water transfluent pollution simulation system

Abstract

The invention provides a temperature control-pressure control underground water transfluent pollution simulation system at least comprising an earth column, and a sampling and testing device, a constant pressure control unit, a constant temperature water control unit and a monitoring unit which are connected with the earth column; the earth column comprises an earth column inner tube which contains an earth sample and an earth column outer tube which is sleeved on the earth column inner tube; the sampling and testing device at least comprises a testing inner tube, a testing outer tube, a sampling cup and a plurality of parameter instruments; the constant pressure control unit at least comprises a constant pressure water tank, a supercharge pump B and a water tank outer tube; the constant temperature water control unit comprises a constant temperature water circuit control part, a constant temperature water tank, a supercharge pump A and a constant temperature water circulation pipeline; and the monitoring unit comprises a pressure display circuit control part, a temperature display circuit control part and a concentration display circuit control part. According to the temperature control-pressure control underground water transfluent pollution simulation system, the defects in the prior art are overcome, the temperature and pressure water taps can be regulated precisely and conveniently, so that conditions required for indoor physical simulation researches are met.

Description

technical field [0001] The invention provides a constant temperature and constant pressure groundwater leakage pollution simulation system, which can be widely used in the study of hydrogeological and geological environments such as pollutant migration, water and soil interaction, dissolution and precipitation of minerals and soil under leaching conditions, and groundwater restoration. question. Background technique [0002] With the over-exploitation of groundwater, human activities are intensifying, and the groundwater pollution caused by factors such as seawater intrusion, garbage seepage, intrusion of upper saline water into lower freshwater, and sewage recharge are becoming more and more serious. The prediction and prevention of groundwater pollution is particularly important. important. As an important research method for such problems, the indoor physical simulator has many advantages. As the main tool for physical simulation, the soil column model affects the develo...

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Problems solved by technology

[0003] According to the previous studies, the current soil column model has the following defects: First, although some efforts have been made in temperature and pressure adjustment of the soil column device used at the present stage, the effect is still not good and cannot be accurately calculated. Adjust the temperature and pressure head at will; Second, most of the current soil columns are designed for unsaturated or low-pressure hydraulic conditions, but due to the low permeability of clayey soil and other media, the flow rate is too slow, and the experiment period is too long

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