An intelligent electronic portable instrument

Abstract

The invention discloses a portable intelligent electronic wall-tapping and roof-knocking apparatus to solve the problems that forecast accuracy of rib spalling and roof fall accidents of tunnel sidewalls and mine work surfaces is limited in the prior art, technology has certain hysteresis quality, and pre-judgement cannot be carried out in time. The apparatus comprises a supporting pole, an electromagnetic vibration exciter, transducers, a fixed support, and a host, wherein the fixed support is fixed at a front end of the supporting pole; the electromagnetic vibration exciter and the transducers are arranged side by side, are fixedly mounted to the fixed support, and is in electrical connection with the host through an aviation connector and a cable or in wireless communication with the host. A conventional method for detecting roof plates and side walls is changed, the apparatus can be furthest adjacent to an objective body, and time and labor can be saved. The electromagnetic vibration exciter can be well coupled to a knocked surface to enable a received signal to be more accurate and reliable. Conventional operation modes, such as motivation and reception through an elastic-wave detector, are changed. The apparatus is smart in design, blasting or hammering is not required, and a worker can hold the host for timely tracking measurement according to detection requirements.

Description

technical field [0001] The invention relates to the field of geophysical prospecting instruments, in particular to an electronic roof-knocking instrument, which is used to predict the occurrence of sidewalls and roof-fall accidents caused by deformation of mine working faces and roadway side walls due to mine pressure. Background technique [0002] The phenomenon that the mine working face and the side wall of the roadway are deformed under the action of the mine pressure, and the phenomenon of being damaged and falling off is called the side wall, and the collapse of the top is called the roof fall, and the two often occur at the same time. Due to complex geological conditions in some mining areas, as well as unscientific and unreasonable mining operations, etc., frequent roof failure accidents occur frequently, and roof failure accounts for more than 40% of mining operation accidents. At present, the prediction and prediction of roof caving is usually carried out by miners...

AI Technical Summary

Problems solved by technology

At present, the prediction and prediction of roof caving is usually carried out by miners by “knocking on the roof” (such as checking whether there are noises, cracks, ribs, slag falling, and broken brackets when the roof sinks). It is greatly affected by subjective factors, and human misjudgment is likely to cause unnecessary accidents

In addition, the method of knocking on the roof also includes the wooden wedge method (a small wooden wedge is nailed into the crack of the roof, if the roof is deformed and the crack increases, the small wooden wedge will automatically fall or loosen, indicating that the roof is in danger of falling), the marking method ( Put yellow mud, paint, and cement mortar on the cracks of the roof, and observe the changes, which can also reflect the deformation of the roof), signal column method (in the stope every 7 to 10m is supported by orchid moso bamboo (or wooden columns) Between the roof and the bottom plate, if the moso bamboo (or wooden column) is found to be fracturing and there is a sound, it means that the roof sinks and there is a danger of falling), but this kind of method is a traditional method, the prediction accuracy is limited, and it has a certain hysteresis, so it cannot be carried out. Prediction

The roof delamination monitor is a commonly used method in modern mines. It adopts distributed layout and continuously monitors the displacement of the drilling rock layer through the mechanical multi-point displacement meter in the borehole, and performs manual or electronic measurement. Due to the need for layout, drilling, Pre-embedded displacement meters, monitoring and other processes have large blind spots, high costs, and lack of timeliness and portability.

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