A method for 3D visualization of colloidal motion distribution in unsaturated soil

Abstract

The invention discloses a method for three-dimensional visualization of colloidal motion distribution in unsaturated soil. The undisturbed soil is loaded into a cylindrical transparent container; the soil column is fully saturated and no water leakage or seepage occurs; measuring points are inserted on the surface of the soil column , establish a measurement circuit, wait until the circuit is stable; deploy nano-Fe 3 o 4 Colloid, the colloid is poured on the surface of the soil column, and the colloid solution needs to be shaken before pouring to make the nano-Fe 3 o 4 The particles are evenly distributed in the solution. After the colloid has completely infiltrated into the soil, let it stand and ensure that the Fe 3 o 4 The colloid is fully infiltrated; read the potential data measured by the equipment, and divide the data into two parts according to the colloid injection time; use the finite difference method based on the central difference formula to carry out the forward modeling of the potential distribution; use the forward modeling results, use the BP God Invert the conductivity distribution of the network, and visualize the inversion results in 3D. The invention has strong operability, clear method, can obtain reliable soil colloid movement characteristics, and provides a new method for improving the efficiency of soil pollution control.

Description

A method for 3D visualization of colloidal motion distribution in unsaturated soil technical field The invention belongs to agricultural technology and environmental ecology technology field, relate in particular to a kind of colloid movement in unsaturated soil Methods for 3D visualization of distributions. Background technique [0002] With the change of national strategic goals, environmental issues have received more and more attention in recent years, and Compared with air pollution and water pollution, the research work on soil pollution is relatively less. Soil pollutants are mainly brought into soil by human activities, landfill leakage, atmospheric heavy metal deposition, sewage Discharge, agricultural production, industrial manufacturing and other activities will eventually carry pollutants into the soil in the form of sewage, and the waste water Some pollutants exist in the form of colloids, and in the process of exercise, the colloids will adsorb heavy me...

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Problems solved by technology

[0004] The development of electrical prospecting has a long history and is now widely used in geological prospecting engineering. The principle is to solve related problems by studying and summarizing the general distribution of electromagnetic fields in natural electric fields or artificial electric fields in terms of time and space. Applied to large-scale research, it is impossible to conduct research in a laboratory environment, and the cost and cycle of the experiment are relatively large

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