A mine borehole logging analyzer and method

Abstract

The invention discloses a mine borehole logging analyzer and method. The analyzer includes a probe, a push rod, a connecting cable and a control box; wherein, the control box includes a box body and a display unit and a data storage unit arranged in the box body , a control circuit unit, a power supply unit, and a depth measurement module; the probe includes a metal casing and a transmission and control unit, a hole inclination measurement unit, a natural gamma unit, a camera unit, and / or a power supply unit that are arranged in the metal casing and are sequentially connected; the method The following analyzes and calculations can be performed: (1) Calculation of the trajectory of the specified section of the borehole; (2) Calculation of the trajectory of the borehole plane; (3) Lithology stratification of the rock formation; (4) Analysis of the borehole structure and water abundance. The invention detects all kinds of boreholes underground, including layered lithology, softness and hardness of rock formations, rock pores, fissures, water outlet points, and roof separation conditions, and calculates the true thickness of rock formations, drilling profile tracks, and drilling plane tracks. In turn, the drilling prediction geological profile can be drawn.

Description

【Technical field】 [0001] The invention belongs to the technical field of borehole detection and logging, and relates to an underground borehole logging analyzer and method in mines. 【Background technique】 [0002] At present, in geological exploration, the conventional method of drilling formation and lithology is mainly to use geophysical well detection, which has become the industry standard. A variety of logging methods (such as natural gamma ray, spontaneous potential, density, apparent resistivity, double-receipt time difference, borehole diameter, etc.) are often used for detection, and it is usually stipulated that more than four parameters are required to accurately judge the formation lithology. However, for the lithology detection of boreholes in the underground environment of mines (such as anchor cable holes, the diameter is only 28mm, 31mm), due to the limitation of current technical conditions, the design size of most logging instruments cannot be designed to b...

AI Technical Summary

Problems solved by technology

However, there are obvious deficiencies in the identification of rock formation lithology: (1) It is greatly affected by the recognition ability of human eyes and the quality of drilling construction (borehole wall smoothness, rock formation softness and hardness, etc.), and it cannot be well distinguished only by photos or videos Similar lithology, such as siltstone, mudstone

(2) Limited by shooting conditions (such as shooting angle, light, drilling medium, and muddy water in the drilling), the interpretation of videos or photos will vary greatly

Due to the above limitations, it is unreliable to conduct lithology identification and stratification of downhole boreholes only based on video camera technology

[0004] Significant hole inclination often occurs in downhole drilling. Whether on the plane or in the profile, the drilling trajectory and design will deviate, especially when the design inclination is relatively small, it will be very obvious, which will lead to drilling design The goal cannot be achieved, and the geological phenomenon cannot be explained when the hole inclination is serious

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