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Tunnel geological advance forecasting method based on mechanical energy nondestructive detection

A technology for geological advance forecasting and non-destructive testing, applied in seismology, measurement devices, geophysical measurements, etc., can solve the problems of the gap between field testing and theoretical research, insufficient technical research, serious "anti-testing" behavior, etc. Travel time, avoid clutter interference, easy and fast layout effect

Inactive Publication Date: 2015-10-14
GANSU ZHITONG TECH ENG DETECTION CONSULTING CO LTD +1
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Problems solved by technology

The application of conventional TSP technology has only a history of more than ten years. It is a developing technology. The research on the technology is not deep enough, and there is still a certain gap between field testing and theoretical research.
With the application of this technology, its own shortcomings have been highlighted, such as: high cost, damaged lining, complicated procedures, unsafe use of explosives, long occupation time, large space resources, affecting construction, and serious "anti-measurement" behavior , data interference and other issues, these are urgently in need of in-depth research and innovation

Method used

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  • Tunnel geological advance forecasting method based on mechanical energy nondestructive detection

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Embodiment Construction

[0026] In the process of implementing the present invention, a seismic wave excitation system, a seismic wave receiving system, and a data analysis system are used.

[0027] The seismic wave excitation system includes a mechanical excitation device, a trigger device, a signal transmission line, and a backing plate;

[0028] The seismic wave receiving system includes a geophone, a signal transmission line and a seismic wave acquisition instrument;

[0029] The data analysis system is mainly a computer.

[0030] Combine below Attached picture , the technical solution of the present invention is described further:

[0031] Such as figure 1 As shown, a method for advanced prediction of tunnel geology based on mechanical energy non-destructive testing is characterized in that the seismic wave receiving point 4 is arranged within the scope of the tunnel face 6 and the unexcavated surrounding rock 1 with a depth of 2 meters around it, and thereafter Seismic wave excitation po...

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Abstract

The invention relates to a tunnel geological advance forecasting method based on mechanical energy nondestructive detection. The method is characterized in that seismic wave receiving points are distributed on a tunnel face and within range of two-meter-deep non-excavated surrounding rocks around the tunnel face, seismic wave excitation points are distributed on the tunnel axis of certain distance within an excavated range behind the tunnel face and the surrounding range or on a bottom plate parallel to the tunnel axis in turn, and a gasket plate is distributed on the position of each excitation point; and after drilling at the seismic wave receiving points, detectors are distributed in the hole bottoms, and the detectors are connected with a seismic wave acquisition instrument via signal transmission lines so that stable, controllable and safe mechanism energy is utilized to excite seismic wave under the premise of no damage to tunnel lining, seismic reflection wave is enabled to reach receiving holes in "first time" by reasonable distribution of the positions of the excitation points and receiving points and thus tunnel geological advance forecasting can be realized.

Description

technical field [0001] The invention relates to the technical field of tunnel geological advance prediction, in particular to a method for tunnel geological advance prediction based on mechanical energy non-destructive testing. This method can use stable, controllable and safe mechanical energy to excite seismic waves under the premise of no damage to the lining, and rationally arrange the positions of excitation points and receiving points so that the seismic reflection waves reach the receiving hole at the first time, thereby reducing clutter Interference, improve forecast accuracy, and finally achieve the non-destructive effect of tunnel geological advance forecast. Background technique [0002] With the continuous strengthening of infrastructure investment and construction, my country will build a large number of tunnel (hole) projects in railway and highway transportation, water conservancy and hydropower, energy mines, municipal engineering and other fields within de...

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Application Information

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IPC IPC(8): G01V1/02G01V1/143G01V1/20
Inventor 王长江李娟任文宏晓龙樊刘东波李佳杨涛涛
Owner GANSU ZHITONG TECH ENG DETECTION CONSULTING CO LTD
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