High-density rapid detection method based on z-component transmitting channel waves

Abstract

The invention relates to a high-density rapid detection method based on z-component transmitting channel waves. The method is achieved by the following steps: (1) collecting data; (2) processing the data by firstly setting an observation system (that is, inputting shots and receiver points coordinates), collecting z-component channel waves by the observation system, and then performing channel wave data analysis, bandpass filtering and imaging in sequence; (3) interpreting the data by comprehensively judging chasms, falling columns and other geological abnormal developmental conditions in the working face based on the combination of the imaging result and the geological data disclosed by the working face laneway, and making an integrated interpretation map of the geological structure in the working face. The method greatly increases the work efficiency, allows the construction of the wide-span working face (more than 1000 m) to be completed within 8 hours, collects the Z-component channel wave signals at the same time by the measurement points which are arranged on the laneway lateral walls, increases the ray coverage density, collects the information as much as possible, and improves the detection precision.

Description

technical field [0001] The invention belongs to the technical field of underground geophysical detection in coal mines, and in particular relates to a high-density rapid detection method of transmission channel waves based on the z component, which is used for finely detecting geological anomalies such as small faults and collapsed columns inside mining working faces. Background technique [0002] In the process of coal mining, disasters and accidents often occur because of the inability to accurately predict the small structures in front of the mining. With the development of mechanized coal mining technology, the production capacity and benefits of the fully mechanized mining face largely depend on the degree of ascertainment of small structures, because the existence of small structures will destroy the continuity of the coal seam and affect the surrounding area of ​​the well. If the stability of the rock is affected, it will even form a good water-conducting channel or a...

AI Technical Summary

Problems solved by technology

In channel wave seismic exploration, because Love-type channel waves are relatively simple and easy to form, current channel wave exploration uses Love-type channel waves, which receive two horizontal components of x and y; however, x and y dual components The reception increases the workload and the difficulty of data processing, and the installation of dual-component geophones requires drilling, orientation and inflation, etc., which increases the difficulty of construction and reduces work efficiency

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