Novel coal rock identification device and method

Abstract

Directed at the problems of complexity, lack of extensive availability and the like of current coal rock identification devices, the invention provides a novel coal rock identification device and method for fast, convenient and accurate identification of coal beds and rock walls in coal mines. The device and the method utilize different characteristics of different substances' dielectric constant epsilon to acquire the phase difference variation according to the capacitance change of a parallel-plate capacitor, and then identifies whether the coal sample in a current mining area is a diggable coal bed. The coal rock identification device and method provided by the invention have the advantages of simple and convenient operation, and can reflect the coal rock identification conditions under the coal mine in real time.

Description

technical field [0001] The invention relates to a detection device and method suitable for underground coal mines, in particular to a novel coal rock identification device and method. Background technique [0002] Coal is one of the important resources in our country. With the continuous development of coal mining technology, the operation process of traditional coal mining face is developing in the direction of less people and no one. When mining coal, it is necessary to identify coal rocks. Improving the accuracy of identifying the interface between coal seams and rock layers is of great significance for accurately grasping coal cutting strength, ensuring coal quality, accurately calculating recovery rates, and saving coal resources. The method of identifying coal rocks has the disadvantages of high labor intensity and low production efficiency. Therefore, automatic identification of coal rocks through scientific methods has become a hot research topic. [0003] A practi...

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Problems solved by technology

[0004] At present, the most widely used method is to rely on the underground staff to carry out manual drilling identification, which has low identification accuracy and high risk

In addition to manual identification, in recent years, many scholars are also researching automatic identification methods, such as: coal-rock interface detection method based on infrared rays, the method of using vibration sensors to obtain vibrations of different frequencies in coal seam rock layers, based on coal-rock natural gamma ray The sensor method of ray radiation characteristics, etc., but most of the results obtained are not ideal, so they cannot be widely used

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