Ultrasonic multipoint real-time monitoring method for mine surrounding rock top plate disasters

Abstract

The invention discloses an ultrasonic multipoint real-time monitoring method for mine surrounding rock top plate disasters and belongs to the technical field of safety monitoring and controlling for mining industry and geotechnical engineering. An ultrasonic multipoint real-time monitoring device is characterized by comprising a non-metal ultrasonic detector (1), a plurality of single-transmitting double-receiving dry hole energy converters (2), a multiple-point-location switching device (3), a main control computer (4) and a sound-light alarming device (5), the single-transmitting double-receiving dry hole energy converters (2) are connected with the multiple-point-location switching device (3) via connecting cables, the multiple-point-location switching device (3) is connected with the non-metal ultrasonic detector (1) via a connecting cable, the non-metal ultrasonic detector (1) is connected with the main control computer (4), and the main control computer (4) is connected with the sound-light alarming device (5). The ultrasonic multipoint real-time monitoring method for the mine surrounding rock top plate disasters has the advantages of high safety, high automation degree, wide application range, multiple-point-location monitoring, graded alarming and the like.

Description

technical field [0001] The invention discloses an ultrasonic multi-point real-time monitoring method for mine surrounding rock roof hazards, which belongs to the technical field of mining and geotechnical engineering safety monitoring and monitoring. Background technique [0002] Under the mine, there are risks such as surrounding rock slabs, roof caving, and rockburst dynamic disasters. Among them, the roof accident is the most prominent, which poses a direct threat to the staff and equipment, and affects the progress of the project. It can also cause support failure. Even earthquakes. From the beginning of 2012 to the end of September 2012 alone, there were 11 roof fall accidents and 44 people died. The safety of the surrounding rock roof needs to be solved urgently. [0003] To ensure safety, advance prevention and early warning must be carried out for the occurrence of the above problems, and the state of the surrounding rock roof needs to be monitored. At present, the...

AI Technical Summary

Problems solved by technology

[0004] Ultrasound has a very sensitive response to changes in the internal density of rock mass, internal defects, and cracks. It can truly reflect the internal changes of the surrounding rock, that is, the damage evolution. Ultrasonic monitoring has the characteristics of simplicity, easy operation, and no damage. It is often used in the test of the loose circle of surrounding rock in mines. There are no reports on the use of ultrasonic testing for real-time monitoring of surrounding rock roof disasters and multi-point monitoring.

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