Advanced Dynamic Forecasting Method Using Isotope Tracer for Water-conducting Channels in Rock Mass

Abstract

The present disclosure provides an advanced dynamic prediction method using isotope tracer rock mass water-conducting channel. Pilot drilling is carried out in front of tunnel excavation to form well logging, and filter pipes are set in the well logging; radioactive isotope tracers are put into the filter pipes to use The principle of seepage The water flow infiltrates and measures the flow velocity and flow rate of the water; the inspection logging is drilled in front of the water flow, and through the measurement of the isotope concentration in the inspection logging and the record of the water volume, the distribution of the water conduction channel is inversely deduced, and through the inflow logging The change of the isotope concentration of the water determines the water supply relationship of the aqueduct.

Description

technical field [0001] The disclosure belongs to the field of tunnel construction, and relates to an advanced dynamic prediction method using isotope tracer rock mass water-conducting channels. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] Isotope tracers, the stable nuclides and radionuclides that make up each element in nature generally have the same physical and chemical properties. Therefore, radioactive nuclides or enriched rare and stable nuclides can be used to trace the objective state and change process of the research object. The distribution and changes of substances labeled with radionuclides can be observed through radioactive measurement methods, and the enriched rare and stable nuclides can be directly measured by mass spectrometry or by neutron methods. [0004] According to the knowledge of the inventor, the methods c...

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Problems solved by technology

[0004] According to the knowledge of the inventor, the methods commonly used in the field of geophysical exploration to detect water, faults, and water channels include: terrestrial sonar method, transient electromagnetic method, and compound induced polarization method. The geophysical field cannot completely and accurately identify geological At the same time, the multi-solution of the inversion greatly limits the accuracy of the data. At the same time, the interpretation of the data is affected by the experience of the observers, and the existence of the aqueduct and the distribution range of the aqueduct cannot be fully identified. Unable to estimate actual water volume

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