Geological forecasting method used in multi-arm drill jumbo construction tunnel

Abstract

The invention relates to a geological forecasting method for a multi-arm drill jumbo construction tunnel, and belongs to the technical field of earthquake forecasting. A plurality of detectors are embedded in the left and right side walls of the tunnel, and the detectors are connected in series and connected to the data acquisition host; a rock breaking vibration signal generated when the multi-arm drill jumbo excavates on a tunnel face is used as a detection seismic source for geological forecast, and long-time reflection seismic signals are continuously collected; seismic interference processing and inversion calculation are carried out on the collected seismic signals, a seismic reflected wave energy diagram is generated, and the geological condition in front of the tunnel face is forecasted based on analysis and interpretation of the reflected wave energy diagram. The method is ingenious in design, adopts a passive seismic source, does not need artificial seismic source excitation, effectively reduces the cost of forecasting implementation, does not affect construction, is convenient and easy to use, is high in adaptability, and is suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of earthquake prediction, and in particular relates to a geological prediction method used in a tunnel constructed by a multi-arm rock drilling rig. Background technique [0002] Drilling and blasting construction with multi-arm rock drilling rigs has a larger footage per cycle of blasting operations than the traditional pneumatic pick drilling and blasting method. At the same time, the blasting accuracy is improved, and the amount of over- and under-excavation works is reduced. Although the construction cost increases, the overall improvement improved construction efficiency. In recent years, various new technological trends in the construction of domestic highway tunnels have been promoted more and more with the advancement of science and technology, and the mechanization and intelligence of construction. It is believed that multi-arm rock drilling rigs with higher precision control will continue to appli...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a geological prediction method used in tunnel construction by multi-arm rock drilling rigs, which is used to solve the technical problems in the above-mentioned prior art, such as: in the process of tunnel construction by multi-arm rock drilling rigs At this stage, there is no reasonable design for the earthquake source forecast when the multi-arm rock drilling rig is excavating the tunnel, which makes the tunnel construction of the multi-arm rock drilling rig a potential safety hazard; Human and material resources cost to deal with potential safety hazards, therefore, the prediction of potential safety hazards must ensure its accuracy

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