Detection device for underground coal mine drill rod length and fault and using method thereof

Abstract

The invention relates to a detection device for underground coal mine drill rod length and fault and a using method of the detection device. The detection device comprises a power supply module, a control module, a detection module and a signal processing module, wherein the power supply module comprises a power supply which is a nickel-hydrogen battery; the detection module comprises a receiving probe and a trigger receiving module; the signal processing module comprises a differential amplification module and an A / D (Analog to Digital) module; the control module comprises a touch screen, a CPU (Central Processing Unit) control panel, an electric pulse emitting circuit and a storage module; the using method comprises a acoustic detection mode and an electric pulse detection mode. According to the detection device and the using method of the detection device, the detection device is simple and compact in structure, quick and accurate for detection, complete in function and explosion-proof in design, different drill rod detection requirements can be met, and the detection device can work in the environment of underground coal mine explosive gas.

Description

technical field [0001] The invention relates to the detection technology of coal mine equipment, in particular to a coal mine underground drilling rod length and fault detection device and its application method. Background technique [0002] Underground coal mine drilling construction is an important part of the drilling technology field in my country, and it is an important prevention and control measure for safety disasters in mine construction and production processes such as underground gas disasters in coal mines, floor water inrush and rock impact pressure. In order to eliminate the hidden dangers of coal mine safety accidents and achieve high-yield, high-efficiency and safe production in the mine, the drilling must reach the design depth and position. At present, there is a lack of instruments for measuring the depth of the borehole in coal mines. The method to obtain the depth of the borehole is to obtain the depth of the borehole by manually counting the drill pipe...

AI Technical Summary

Problems solved by technology

At present, there is a lack of instruments for measuring the depth of the borehole in coal mines. The method to obtain the depth of the borehole is to obtain the depth of the borehole by manually counting the drill pipes after the drilling construction is completed. There are the following shortcomings: the human influence factor is large, and errors or errors are easy to occur; It takes a long time to obtain the drilling depth; it is necessary to arrange special personnel to be on duty throughout the whole process to prevent false data reporting and increase management costs

[0003] In addition, at present, the measurement-while-drilling and directional drilling in coal mines in my country all use wired methods to transmit measurement signals. The central cable-through drill pipe is used as a signal transmission channel. The sealing and connection status of the wire in the drill pipe directly affects the communication status of the measurement while drilling, but in the underground construction of the coal mine, due to various unmeasurable factors such as materials, processes and construction conditions, the seal damage at the joint of the drill pipe occurs from time to time. Cause short circuit or open circuit, unable to carry out measurement while drilling

When there is an abnormality in the measurement while drilling device, because there is no instrument to detect whether the drill pipe cable core is connected normally, it is impossible to judge the problem. We can only roughly guess various situations and verify repeatedly. In serious cases, the drill is even lifted for inspection, which affects construction efficiency

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