Advance prediction method for predicting bad geology in front of tunnel

A technology of advanced forecasting and tunneling, which is applied in the field of tunnel and underground space engineering construction, can solve problems such as construction safety hazards, and achieve the effects of small construction interference, wide detection space range, and accurate forecasting results

Inactive Publication Date: 2017-11-21
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

[0003] The purpose of the present invention is to provide an advanced method for predicting unfavorable geology in front of the tunnel, aiming at the problem of potential safety hazards in construction due to failure to clearly grasp the geological environment in front of the tunnel face when the tunnel under construction passes through sections with comple

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  • Advance prediction method for predicting bad geology in front of tunnel

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Embodiment

[0031] The invention provides an advanced forecasting method for predicting unfavorable geology ahead of a tunnel;

[0032] like figure 1 As shown, the advanced prediction method for predicting the bad geology ahead of the tunnel in this embodiment includes the following steps:

[0033] Step 1: According to the construction drawings, delineate the specific scope of the proposed tunnel project site, and conduct detailed research on the survey and design data of the tunnel site area, determine the approximate position of the intersection of faults and other unfavorable geological bodies and the tunnel axis, and estimate the rock stratum, Occurrence of faults and other important geological interfaces to predict groundwater-rich segments. Through a detailed study of the survey and design data of the tunnel site area, combined with on-site and indoor tests, the geological structure, topography, stratum lithology, ground stress characteristics, groundwater storage and transportatio...

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Abstract

The invention discloses an advance prediction method for predicting bad geology in front of a tunnel. The method includes the following steps: (1) studying tunnel site area survey and design materials in detail; (2) carrying out detection using geological radar; (3) constructing a 3D geological simulation model of a tunnel; (4) carrying out monitoring and measuring on a tunnel site, and modifying the simulation model according to the monitoring and measuring result; and (5) designating the specific scope of a bad geological section and roughly analyzing the type of the bad geological body according to the tunnel site area survey and design materials, geological radar data, on-site monitoring and measuring materials and simulation data. Through using the advance prediction method of the invention, the bad geological environment in front of a tunnel face can be analyzed roughly and predicted in advance, and an effective construction means can be adopted in a timely manner to reduce safety risks in tunnel construction. The advance prediction method has the advantages of simple operation, safety and reliability, high prediction accuracy, and the like.

Description

technical field [0001] The invention relates to the technical field of tunnel and underground space engineering construction, in particular to an advanced prediction method for predicting unfavorable geology ahead of a tunnel. Background technique [0002] With the sustained and healthy development of my country's economy and society, the construction of infrastructure continues to increase. In the large-scale infrastructure construction currently underway in my country, there are a large number of railways, highways, water diversion, urban subways and other projects including tunnel construction. Before the design and construction of the tunnel, it is necessary to carry out a detailed survey of the engineering geological conditions of the proposed tunnel project site. However, due to the complexity of the rock mass, there may be discrepancies between the data obtained from the survey and the actual situation revealed after the tunnel excavation. Large discrepancies. If the...

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Application Information

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IPC IPC(8): G01V11/00
CPCG01V11/00
Inventor 张军伟刘秉峰李雪任跃勤祝全兵谢强杨军
Owner SOUTHWEST PETROLEUM UNIV
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