TBM rock-breaking source seismic detection device and method based on ground-tunnel combination

Abstract

The present disclosure provides a TBM rock-breaking seismic source seismic detection device and method based on the ground-tunnel combination. The present disclosure uses the rock-breaking vibration of the cutterhead as the seismic source during the working process of the roadheader, and the rock-breaking vibration signal is installed at the rear of the cutterhead. The rock-breaking seismic source is received and stored by the leading receiving station array. The excited seismic waves are reflected by the wave impedance interface and then received and stored by the tunnel receiving station array and the surface receiving station array. The noise signals generated by the roadheader and the surface noise source are The noise receiving station receives and stores the above signals, and the above signals are timely transmitted to the seismic wave data processor for timely processing, making full use of the advantages that the tunnel receiving station array is sensitive to horizontal seismic wave information, and the surface receiving station array is sensitive to elevation direction seismic wave information. Ultimately, a more accurate seismic profile of the rock mass in front of the face of the TBM and around the tunnel can be obtained.

Description

technical field [0001] The disclosure belongs to the technical field of TBM rock-breaking seismic source seismic detection, and relates to a TBM rock-breaking seismic source seismic detection device and method based on ground-tunnel combination. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] Compared with the traditional drilling and blasting method, tunnel boring machine (TBM) construction has significant advantages such as high degree of mechanization and fast construction speed. With the continuous development of tunnel engineering in my country, tunnel boring machine has been more and more widely used. application. However, the adaptability of tunnel boring machines to changes in geological conditions is poor. Once they are not handled properly when encountering unfavorable geological sections, disasters such as water and mud inrush ...

AI Technical Summary

Problems solved by technology

However, for the advanced detection of seismic waves in the cave, the observation space available in TBM tunnels is relatively narrow, especially in small-diameter TBM (4m-6m) tunnels. Middle: ①The horizontal offset (perpendicular to the tunnel excavation direction) is insufficient, and the survey line is almost one-dimensionally arranged along the tunnel excavation direction; ②The layout space of geophones is limited, and the number of geophones that can be arranged is small, resulting in the seismic data obtained less

In this case, although the abnormal body in front can be identified, it is not conducive to obtaining the wave velocity distribution, which affects the positioning effect of the abnormal body in front of the face

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