Simulation method for groundwater regime of karst big spring

Abstract

The invention discloses a simulation method for groundwater regime of karst big spring, and relates to the technical field of hydrogeology. According to the method, by adopting the tracing test and the correlation analysis for the spring water levels and observation water levels of different depths, the plane extending direction of an advantageous seepage channel of karst is determined; and through layered monitoring for underground water temperature and conductivity, the vertical occurrence position of a karst pipeline is determined, and on the basis, a dual structure seepage-predominant flowcoupling model is established, so that the simulation for the spring water regime is carried out. With the method, the dynamic change process of heterogeneous medium groundwater of the karst can be more accurately simulated, and then a scientific basis is provided for accurately mastering the implementing opportunity of the spring protection measures. In addition, the karst channel found by the method is not limited to the spring water level simulation, meanwhile, a basis can be provided for a plenty of city underground space exploitation projects, so that the damage caused to buildings by underground karst caves and crushed zones is avoided, and thus the life and property safety of people is protected.

Description

technical field [0001] The invention relates to the technical field of hydrogeology, in particular to a method for simulating groundwater dynamics of large karst springs. Background technique [0002] At present, the methods for predicting groundwater dynamics mainly include mathematical statistical methods based on time series water level monitoring, analytical methods and numerical methods based on groundwater dynamics. As a relatively complex aquifer system, karst aquifers include various types of voids such as pores, fissures, karst pipes, and small caves. The groundwater flow in porous media mostly satisfies Darcy’s law, while the karst fissures in pipe media Rapid flow movement cannot be simply described by Darcy's law, so mathematical statistics, analytical methods, numerical methods, etc., often have large deviations in simulating heterogeneous karst water levels. [0003] In order to protect the large karst springs and timely formulate spring protection measures, i...

AI Technical Summary

Problems solved by technology

As a relatively complex aquifer system, karst aquifers include various types of voids such as pores, fissures, karst pipes, and small caves. The groundwater flow in porous media mostly satisfies Darcy’s law, while the karst fissures in pipe media Rapid flow movement cannot be simply described by Darcy's law, so mathematical statistics, analytical methods, numerical methods, etc., often have large deviations in simulating heterogeneous karst water levels

[0003] In order to protect the large karst springs and timely formulate spring protection measures, it is necessary to accurately warn the dynamic changes of the spring water level. In order to improve the simulation accuracy of the groundwater level in the heterogeneous aquifer system, the predecessors have solved the multiple The problem of the heterogeneity simulation of the medium field, but there are certain defects in the method of determining the location of the karst pipeline based on the geostatistical method and the geophysical method

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