While-drilling detection device and method of lithological components of tunnel roof

Abstract

The invention discloses a while-drilling detection method of lithological components of a tunnel roof, which is applicable to the technical field of mine tunnel supporting. While-drilling rock fragments in a roof punching process of a roof bolter are collected through a special rock fragment collection device, and a whole process of rock fragment drainage, filtering, precipitation and drying is finished on a tunnel driving working surface; an enhanced handheld type ore analyzer is combined to determine the lithological components of the tunnel roof in a certain range instantly. The while-drilling detection method provided by the invention is simple to operate and convenient to test; a punching procedure in an anchor bolt supporting process is realized and detection analysis on lithological characters of the tunnel roof is finished at the same time; the while-drilling detection method is particularly suitable for geological conditions that the lithological characters of mines are complicated and diversified; the difficult problem of quantitatively describing the lithological components of the roof is solved and scientific evidences can be provided for designing and adjusting a tunnel roof supporting manner and supporting parameters.

Description

technical field [0001] The invention relates to a method for detecting the lithology composition of the roadway roof while drilling, which is especially suitable for the complex and changeable geological conditions of the coal mine roadway roof lithology, solves the major problem of quantitatively describing the lithology composition of the roadway roof, and is applied to mine roadway support protection technology field. Background technique [0002] The occurrence conditions of my country's coal resources are affected by the depositional environment. The lithology of the roof often changes frequently in the same roadway at the same layer. Since the lithology characteristics of the roadway roof cannot be verified in time, the support design cannot follow the change of the roof lithology. However, timely changes may sometimes cause roof accidents due to insufficient support strength, or excessive support strength, waste support materials, and reduce tunneling efficiency. [0...

AI Technical Summary

Problems solved by technology

[0004] Technical problem: Aiming at the deficiencies of the above-mentioned technologies, a method with simple steps is provided, which solves the technical problem that the lithological composition of the roof cannot be quickly identified during the tunneling and support of the coal mine roadway, and the lithology of the roof strata can be detected in real time during the tunneling process. Safe and efficient detection device and method for lithological composition of roadway roof while drilling

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