Real-time monitoring method for bad geological body grouting on basis of four-dimensional resistivity inversion

A real-time monitoring and resistivity technology, applied in the field of real-time monitoring of grouting in unfavorable geological bodies, can solve problems such as the inability to detect the migration path of the veins in real time, the sedimentary core retention and plugging, and the secondary water inrush, etc., and achieve serious weakening. Morbidity, Enhanced Sensitivity, Reduced Effect of False Anomalies

Active Publication Date: 2018-10-12
SHANDONG UNIV
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Problems solved by technology

Existing grouting detection technologies, such as digital borehole camera, geophysical prospecting, etc., cannot detect the migration path of the grout veins, deposit nuclei and plugging conditions during the grouting process in real time.
If the leaks blocked by grouting cannot be found and dealt with in time, it is very easy to cause secondary water inrush

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  • Real-time monitoring method for bad geological body grouting on basis of four-dimensional resistivity inversion
  • Real-time monitoring method for bad geological body grouting on basis of four-dimensional resistivity inversion
  • Real-time monitoring method for bad geological body grouting on basis of four-dimensional resistivity inversion

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0035] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0036] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinatio...

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Abstract

The invention discloses a real-time monitoring method for bad geological body grouting on the basis of four-dimensional resistivity inversion. An approximate range of a bad geological body is determined through a geophysical prospecting means, multiple drill holes are punched at a regional boundary according to the determined approximate range of the bad geological body, electrodes are arranged inthe drill holes, whole-space three-dimensional resistivity cross-hole CT fine detection is carried out, and the bad geological body is identified and located; grouting holes are formed according to adetection result, and the bad geological body is grouted and blocked; a whole-space four-dimensional resistivity cross-hole CT method is used for monitoring the whole process of grouting and blocking, and a four-dimensional resistivity inversion objective function and an inversion equation are created; results obtained through a seismic method and a radar method are used as priori information andsubstituted into the inversion equation, and inversion iteration is conducted to obtain a group of resistivity inversion results; according to imaging results, a conductivity image of dynamic changesof a monitored area is obtained, and correspondingly a migration path, deposition retention and blocking conditions of slurry veins at each stage are obtained.

Description

technical field [0001] The invention relates to a real-time monitoring method for grouting of unfavorable geological bodies based on four-dimensional resistivity inversion. Background technique [0002] Grouting is the most important means of strengthening the deep karst and broken zones of the site. However, the traditional grouting technology cannot achieve transparent perception and visual monitoring of the grout migration process and path, resulting in grouting construction operations mainly relying on experience and A small amount of sensor data has a strong blindness, and it is impossible to realize the process control of grouting and the precise optimization of its parameters, which often leads to incomplete, incomplete, and substandard grouting, burying major safety hazards. [0003] Specifically, the real-time monitoring of the grouting process faces the following two problems: [0004] First, due to the complex geological environment of the monitoring area and the...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V3/38G01V11/00
CPCG01V3/38G01V11/00
Inventor 刘斌庞永昊刘征宇王宁刘沈华
Owner SHANDONG UNIV
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