Assay method of migration path of groundwater by using tracer agent

Abstract

The invention discloses an assay method of a migration path of groundwater by using a tracer agent. The assay method includes the following steps that a tracer area is determined and a ground map of the tracer area is drawn; the type of the tracer agent is determined; the delivery quantity of the tracer agent is determined; a delivery well and monitoring wells are selected and distributed; delivery and sampling of the tracer agent are carried out; detection of a tracer sample is carried out; a result of the groundwater migration path is summarized; and result interpretation of the groundwatermigration path is carried out. According to the assay method of the migration path of the groundwater by using the tracer agent, an assay method of a sodium fluorescein tracer agent is adopted, a time-concentration relation curve is drawn, according to the time-concentration relation curve and the straight line distance between the delivery well and the monitoring wells, the groundwater average velocity and the groundwater flow direction of the delivery well and the monitoring wells are measured, then hydraulic power relation conditions of the groundwater in and out of the tracer area are found out, the groundwater flow rate is determined, and the main direction of the groundwater flow direction is determined.

Description

technical field [0001] The invention relates to a measurement method, in particular to a method for measuring groundwater migration path by using a tracer, and relates to the technical field of groundwater movement observation. Background technique [0002] The groundwater circulation system is not only controlled by topography and geomorphology, but also by geological structure. Since the development of karst and the migration of groundwater generally have obvious heterogeneity, in addition to the characteristics of ordinary karst pores, there are also developed karst caves and Fissures and other pipeline media have different karst forms, many seepage and water outlet points, large changes in water conservancy slope, and obvious differences in hydraulic flow rates, forming an intricate hydraulic geological system. The storage capacity of groundwater and the structure of karst aquifers , groundwater trend, and groundwater plume distribution are difficult to analyze and under...

AI Technical Summary

Problems solved by technology

Although these tracer techniques are widely used in various geological karst areas, they also have disadvantages to varying degrees: chemical tracers are usually used in large quantities, with high costs and large detection errors; isotope tracers require professional construction The use of special equipment for detection will pollute the water environment, which is not conducive to large-scale promotion and application

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