Method for analyzing underground leakage of soil in karst region

Abstract

The invention discloses a method for analyzing the underground leakage of soil in a karst region. The method comprises the following steps: selecting a plurality of typical observation points in a study area; setting one quadrat at each observation point, and drawing a line marker at the contact of a rock interface and a soil surface; carrying out a soil sample collection technology in a "soil layer + rock-soil interface" manner, measuring the soil layer creep displacement with the drawn line marker as a reference point according to the time scale required by the study, which is individual rainfall, month, season or year, after the soil leakage; collecting a soil sample after the leakage or study period, and analyzing the soil particle composition of the soil sample; carrying out a traditional technology which is a pipette technology or a laser particle size technology; and analyzing the creep displacement and the leakage of the soil. The creep displacement of crack soil in the karst region and the mass fraction change of the particle size grades of soil particles are analyzed by combining line marker drawing with the soil particle analysis-pipette technology in order to reveal theunderground leakage process of the soil in the karst region.

Description

technical field [0001] The invention belongs to the field of soil erosion and soil science, and specifically relates to an analysis method of soil underground leakage in karst areas based on the combination of marking and soil particle analysis, which is specially used for the research of soil underground leakage in karst areas. Background technique [0002] The special "dual" structure and porous medium characteristics of the karst area make the runoff flow in the shallow pores (cracks), pipes, and funnels during the rainfall process will take away the soil, resulting in "soil leakage". Soil underground leakage is a special way of soil erosion in karst rocky desertification areas. [0003] As early as the 1960s, foreign countries had pointed out the phenomenon of soil underground leakage. However, due to the difficulty of direct observation of underground leakage and the lack of practical research methods and means, people do not have a deep understanding of the mechanism o...

AI Technical Summary

Problems solved by technology

These methods have limitations in quantitatively revealing the subsurface leakage of water and soil in karst slope land, and it is difficult to reveal the process and mechanism of soil subsurface leakage.

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