Underground engineering three-dimensional stress field monitoring and early warning device and monitoring method thereof

Abstract

The invention relates to an underground engineering three-dimensional stress field monitoring and early warning device and a monitoring method thereof, and belongs to the technical field of underground engineering. Stress field monitoring probes are fixed to the outer walls of the left end and the right end of the monitoring box, a pressure container is fixed into the monitoring box, the inlet endof the pressure container is connected with one end of a pipeline, the other end of the pipeline is connected with a through hole in the bottom of the monitoring box, and the outlet end of the pressure container is connected with a pressure pipe; the upper end of the pressure pipe is fixedly provided with a sleeve; a through hole plate is fixed to the top of an inner cavity of the sleeve, an inner groove block is fixed to the middle of the through hole plate and provided with a through cavity, a polystyrene ball is assembled on the inner wall of the through cavity, a whistle is fixed to the top side wall of the through hole plate, a controller is fixed into the monitoring box, and an inflator pump is installed in the pressure container, and the pressure field monitoring probe and the inflator pump are electrically connected with the controller. The stress field monitoring probe can monitor the change of the stress field in real time, and the controller receives a stress field change signal monitored by the probe so as to provide early warning in real time.

Description

technical field [0001] The invention relates to an underground engineering three-dimensional stress field monitoring and early warning device and a monitoring method thereof, belonging to the technical field of underground engineering. Background technique [0002] Stress field refers to any point in any object or rock mass, there is an instantaneous stress state corresponding to the point, a spatial stress field composed of a series of instantaneous stress states of points, if the stress state of each point in the stress field They are all the same called a uniform stress field, and if they are constantly changing, they are called a non-uniform stress field. In underground engineering, the most important item is the three-dimensional stress field, which is indispensable whether it is construction or molding. During the construction of underground engineering, it is necessary to monitor the three-dimensional stress field. Once the three-dimensional stress field changes, unne...

AI Technical Summary

Problems solved by technology

During the construction of underground engineering, it is necessary to monitor the three-dimensional stress field. Once the three-dimensional stress field changes, unnecessary troubles will be caused. The traditional monitoring device, which fixes the probe on the surrounding rock wall, is costly and troublesome to operate. improve on existing technology

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