A Advance Forecasting Method for Predicting Unfavorable Geology in Front of the Tunnel

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 discrepancy. If the g...

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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 complex lithology and strong structural action. Forecasting method, through the use of this advanced forecasting method, the adverse geological environment in front of the tunnel face can be accurately analyzed and forecasted, so that effective construction methods can be adopted early and in time to reduce potential safety hazards and ensure construction safety

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