Deep well cross-hole underground water flow rate, flow direction and geological parameter determining device and method

Abstract

The invention discloses a deep well cross-hole underground water flow rate, flow direction and geological parameter determining device. The determining device comprises a detector and a source injector, wherein the detector is connected with a data collection instrument, and the source injector is connected with a source-injecting control instrument. A method adopting the device comprises the following steps that the corresponding relationship between the conductivity and the concentration of a tracer material solution at different temperatures is determined; at least two drilling holes are selected; a target aquifer section is selected; the detector is lowered into the target aquifer section in a hole to test the conductivity background value and the temperature value; the source injectoris used to inject the tracer material solution into a source-injecting hole, and the detector is used to measure the water conductivity and the temperature in the detecting hole, so that obtain a distribution curve of the solubility of the tracer material solution with time is obtained; and a crossed test is carried out to calculate and obtain the seepage velocity and the flow direction of the underground water in the holes. The deep well cross-hole underground water flow rate, flow direction and geological parameter determining method can rapidly complete the determination of the undergroundwater flow rate, flow direction and related hydrogeological parametric of the underground water without radioactive pollution.

Description

technical field [0001] The invention relates to the technical field of groundwater parameter measurement, in particular to a deep well cross-hole groundwater flow velocity and flow direction and geological parameter measurement device and method. Background technique [0002] Groundwater velocity and flow direction are two important dynamic parameters in the study of groundwater seepage field, and are the basis for determining the permeability coefficient and seepage volume of aquifers. With the rapid development of underground engineering, more and more engineering construction needs to master the basic parameters of groundwater seepage in order to solve the possible hidden dangers of accidents, such as deep well grouting diffusion process, detection of reservoir seepage inlet, river embankment Piping leakage, mine water disaster prevention, road bridge and culvert slope seepage, underground railway hydrogeological survey and monitoring, excavation and drainage of foundatio...

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Problems solved by technology

However, the isotope single-hole dilution test is a radioactive operation during the tracer injection process. The storage of radioisotopes, on-site injection, protection, testing, and the cooperation of auxiliary personnel are prone to radioactive accidents, wh

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