Method for determining large karst spring replenishment channel and intensity

Abstract

The invention discloses a method for determining the large karst spring replenishment channel and intensity. The method comprises the following steps of 1, using a spring water position to judge the sensitivity of a rainfall station; 2, determining the main runoff zone depth and distribution thereof; 3, verifying the main runoff zone depth and distribution thereof determined in the step 2 througha temperature and conductivity tracer technique; 4, calculating the intensities of different runoff replenishment sources. By means of the method for determining the large karst spring replenishment channel and intensity, on the basis of the nature of a regional hydrogeological condition, through the four elements of the relevance of the rainfall station and the spring water position, the karst fissure rate, the temperature tracer and the water chemical mixing ratio, the outdoor large-scale karst spring replenishment channel is precisely identified, a scientific basis is provided for protection of large karst spring water flow and water quality, and decision-making support is provided for related government departments to manage groundwater resources.

Description

technical field [0001] The invention relates to the technical field of hydrogeology, in particular to a method for determining a karst big spring supply channel and its strength. Background technique [0002] With the change of global climate and environment and the intensification of human activities, many environmental hydrogeological problems such as spring flow depletion and spring water pollution have appeared in karst distribution areas in recent years. Therefore, karst water supply channels have become a difficult problem in karst research at home and abroad. Although predecessors tried to study the source of runoff in karst water systems by using computer numerical simulation inversion, optimization algorithm identification, probability and statistics models, and indoor experiments, due to the limitation of technological development, there is no accurate identification under the conditions of modern science and technology. An effective method for subsurface recharge ...

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Problems solved by technology

Although predecessors tried to use computer numerical simulation inversion, optimization algorithm identification, probability statistics model, indoor experiment and other methods to study the source of runoff in karst water system, due to the limitation of technological development level, there is no accurate identification under the condition of modern science and technology. Efficient method for subsurface recharge runoff pathways in karst spring domains

[0003] At present, these methods of karst spring supply channels and their strength are still in the stage of generalization of hydrogeological conditions, and there are three insurmountable fatal flaws: First, the generalized hydrogeological conditions are too idealized, divorced from natural actual conditions, and cannot be used for Accurately guide engineering practice problems; second, due to the constraints of time scale and spatial scale, especially the scale effect of indoor experimental methods is huge, the obtained hydrogeological parameters often have several orders of magnitude errors; Accurately obtain the three-dimensional spatial distribution of karst channels

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