Method for monitoring whole-process safe displacement of underground surrounding rock

Abstract

The invention provides a method for monitoring whole-process safe displacement of an underground surrounding rock, belonging to the technical field of mining industry and geotechnical engineering safety detection and monitoring. The method is characterized in that an ultrasonic displacement monitoring device (1), an infrared thermal imager (2), an underground master control computer (3) and an acousto-optic alarm device (4) are installed and connected on a travelling mechanism (5) to jointly form a whole-process safe displacement monitoring device; the ultrasonic displacement monitoring device (1), the infrared thermal imager (2) and the underground master control computer (3) are connected to carry out real-time recording and analysis on the monitored surrounding rock displacement and infrared thermal image or temperature; the underground master control computer (3) is connected and communicates with the acousto-optic alarm device (4); and the travelling mechanism (5) ensures that the displacement monitoring device reaches the predetermined position. The method has the advantages of simplicity and convenience in displacement monitoring and operation, high safety, high degree of automation, no damage, real-time and reliable monitored data, wide application range and the like.

Description

technical field [0001] The invention discloses a whole-process safety mobile monitoring method for underground surrounding rock, which belongs to the technical field of mining and geotechnical engineering safety detection and monitoring. Background technique [0002] After the excavation of hard rock roadway or tunnel, the biggest problem encountered is the safety of the surrounding rock, which involves the roof caving and rockburst of the surrounding rock. Due to its destructive, sudden and dynamic characteristics, it not only affects the underground The construction personnel and equipment constitute a direct threat, and affect the construction progress, and can also cause over-excavation, support failure, and even earthquakes. As the development of underground space and resource mining continue to go deeper, the engineering disasters caused by excavation are becoming more and more serious, and the safety of surrounding rocks needs to be solved urgently. [0003] In view ...

AI Technical Summary

Problems solved by technology

[0004] The use of ultrasonic waves to detect the displacement of surrounding rocks is relatively fast, convenient, simple to calculate, easy to achieve real-time control, and can meet practical requirements in terms of measurement accuracy. Infrared thermal image detection technology has the advantages of non-contact, real-time, fast, and full-field measurement. , the application of infrared thermal imager to monitor the infrared radiation produced during the rock deformation process has been successfully experienced. During the loading process of rock samples, micro-cracks are accompanied by infrared radiation. The stronger the micro-cracks, the stronger the infrared radiation generated. In the infrared The more obvious the image displayed in the thermal imager, the infrared radiation temperature change and threshold of stress concentration and rupture inside the surrounding rock can be determined, and early warning can be given to the safety of the surrounding rock. Therefore, ultrasonic displacement monitoring devices and infrared thermal imaging cameras are used here to detect Conduct mobile monitoring, which is rarely reported

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