Tunnel construction geological disaster forecasting method

A technology for geological disasters and tunnel construction, applied in seismology, seismic survey, geophysical survey, etc., can solve problems such as not taking into account important factors of tunnel construction

Active Publication Date: 2018-08-17
NORTH CHINA UNIVERSITY OF TECHNOLOGY +1
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Problems solved by technology

[0003] At present, the advanced geological prediction technology usually focuses on the evaluation and description of the four elements of geological defects, which only belongs to the investi

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  • Tunnel construction geological disaster forecasting method

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Embodiment Construction

[0026] Embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art would recognize that the described embodiments can be modified in various ways or combinations thereof without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims. Also, in this specification, the drawings are not drawn to scale, and like reference numerals denote like parts.

[0027] Combine below figure 1 and figure 2 This embodiment will be described in detail.

[0028] figure 1 It is a schematic flow chart of the geological disaster prediction method for tunnel construction according to the present invention, as figure 1 As shown, the tunnel construction geological disaster prediction method of the present invention comprises the following steps:

[0029] Before the excavation of the S1 tunnel, the seismic wave ...

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Abstract

The present invention discloses a tunnel construction geological disaster forecasting method. The method comprises the steps of: S1, prior to tunnel excavation, detecting information of a geological flaw body of a tunnel surrounding rock at front of a tunnel face; S2, in the process of tunnel excavation, collecting rock failure focus information around the geological flaw body and auxiliary focusinformation in a hole; S3, according to the rock failure focus information, determining corresponding micro-seism event information and a seismic wave transmission speed corresponding to the micro-seism event information; S4, according to a speed model of stratum optimization, correcting and calibrating the seismic wave transmission speed in the step S3 so as to correct and calibrate the micro-seism event information; and S5, forecasting geological disasters caused by tunnel construction in real time. Through combination of the seismic wave method and the micro-seismic monitoring technology, the tunnel construction geological disaster forecasting method considers the seismic waves caused by construction factors to perform correction and calibration of the rock failure micro-seism event, forecast the geological disasters which are likely to happen in the construction process such as collapsing, roof collaspe and the like.

Description

technical field [0001] The invention relates to the technical field of geological disaster forecasting, in particular to a method for forecasting geological disasters in tunnel construction. Background technique [0002] In the construction of underground projects in our country, tunnels are often used to cross mountains along highways or railways. During tunnel construction, due to the complex and changeable geological bodies in front of the tunnel face, faults, karst caves, broken zones, underground rivers, and high ground stress are often encountered. Geological conditions, if the geological conditions in front of the tunnel cannot be grasped in time, it is likely to cause geological disasters such as landslides, water gushes, rockbursts, and even debris flows. Carrying out geological advance forecasting is of great significance to the quality and safety of tunnel construction. [0003] At present, the advanced geological prediction technology usually focuses on the eval...

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Application Information

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IPC IPC(8): G01V1/00G01V1/30
CPCG01V1/008G01V1/306G01V2210/6222G01V2210/642
Inventor 姚海波单中趁尹留阳耿彦生肖剑刘彦军禄苗苗
Owner NORTH CHINA UNIVERSITY OF TECHNOLOGY
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