Resistivity real-time imaging monitoring method and system for water-bursting geological disaster in construction period of underground engineering

Abstract

The invention discloses a resistivity real-time imaging monitoring method and a resistivity real-time imaging monitoring system for a water-bursting geological disaster in a construction period of underground engineering. The method comprises a data acquisition method, a data transmission method, a data real-time inversion and imaging method and a catastrophe premonition identification and early warning method. The invention also relates to the resistivity real-time imaging monitoring system for the water-bursting geological disaster in the construction period of the underground engineering. The system consists of a data acquisition subsystem, a data transmission subsystem, a data processing (data real-time inversion and imaging) subsystem and an early warning subsystem. The invention has the advantages that: data are acquired, transmitted, inverted and imaged in real time; a real-time dynamic image of crack generation, expansion and penetration can be effectively obtained; information such as the generation position and formation process of main cracks and burst water seepage channels is obtained; a series of premonition information can be successfully obtained; and geological disasters can be forecast and timely warned.

Description

technical field [0001] The invention relates to a real-time imaging monitoring method and system for water inrush geological disaster resistivity during the construction period of an underground project. Background technique [0002] In recent years, with the acceleration of my country's infrastructure construction and the implementation of the energy strategy, and the rapid development of the western development process, my country has built a large number of projects such as railways, highways, hydropower and cross-basin water transfer. Quite a lot of underground projects such as long tunnels and tunnels. [0003] These underground projects generally have the characteristics of large buried depth, long tunnel line, complex geological conditions, and developed water-bearing structures. Because it is difficult to find out all the hydrogeological conditions in the previous exploration work, the probability of encountering water inrush (inrush) disasters during excavation is g...

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Problems solved by technology

However, the current research work adopts the form of a symmetrical quadrupole device with a single pole distance, and obtains information intuitively from the apparent resistivity time-history curve. The response to changes in bulk electrical properties is insensitive, and information on the initial stage of rock mass failure cannot be obtained, resulting in a delay in the issuance of early warnings; detailed information, it is impossible to carry out real-time imaging monitoring of rock mass failure and other processes, which may lead to the omission of important precursory information; real-time dynamic images of

[0007] (1) The current monitoring methods for stress, displacement, temperature, water pressure, etc. can only obtain local relevant information near the buried component point, and cannot comprehensively monitor large-scale, especially deep, water inrush information, and cannot obtain information on crack expansion, water inrush, etc. The essential information on the evolution of water inrush disasters such as channel development and rock formation rupture is poor in intuition and timeliness, which can easily cause the omission of important information, resulting in misjudgment and misjudgment

[0008] (2) The existing DC resistivity monitoring method only relies on the apparent resistivity image for monitoring and judgment, but has not broken through the real-time inversion method, and cannot truly present the crack expansion, rock formation breaking, and water inrush channel formation during the water inrush disaster process. process, the monitoring effect can often be unsatisfactory

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