Blasting vibration test device for measuring slope stability and evaluation and early warning method

Abstract

The invention discloses a blasting vibration test device for measuring slope stability and an evaluation and early warning method, and relates to the technical field of mining professional slope stability detection. The blasting vibration test device comprises a steel structure box body, a slope model is arranged in the steel structure box body, and a bearing steel plate is fixedly arranged at the bottom of an opening in the front side of the steel structure box body; a vibration reduction base is fixedly arranged below the steel structure box body, and a threaded telescopic mechanism is fixedly arranged at the position of an upper frame of the steel structure box body. The device can work cooperatively with a speed sensor and an acceleration sensor at the same time, then multiple groups of reference data are measured, the situation that the accuracy of the measured data is affected due to the fact that the analogy error is large is avoided, and in addition, technical personnel can obtain early warning notification through a control host in a slope model building mode, and the vibration wave transmission condition around the field explosion point can be directly observed, dangerous places can be found in time, measures of adjusting and controlling the explosive equivalent are taken for treatment and early warning, and slope safety and safe production of the stope are guaranteed.

Description

technical field [0001] The invention relates to the technical field of mining slope stability detection technology, in particular to a blasting vibration test device and an evaluation and early warning method for measuring slope stability. Background technique [0002] The blasting vibration wave produced in the blasting mining process of the mining industry will affect the slope to a certain extent, so the propagation law of the blasting vibration wave inside the slope is studied, and the stability safety factor of the slope and the safe vibration velocity of the slope are estimated. As well as the critical vibration velocity, it can effectively monitor the stability of the slope of the open-pit mine by blasting vibration, which is of great significance to ensure the safe production of the mine. Slope stability test device. [0003] The main disadvantages of existing test devices for measuring slope stability are: the side walls of similar model frames are made of wood or ...

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Problems solved by technology

[0003] The main disadvantages of existing test devices for measuring slope stability are: the side walls of similar model frames are made of wood or steel, which will generate non-negligible reflected waves, and when the water content of the slope model is large , the wooden side wall is susceptible to corrosion and has poor durability; the steel side wall will have a greater impact on the overall test data, and there will be a large error between the measured data and the specific data on the spot, and it is not easy to observe and measure. In addition, the existing The production cost of the test device is relatively high, the overall service life is relatively short, and it cannot cooperate with the speed sensor and the acceleration sensor at the same time

[0004] In addition, the safety monitoring and early warning of slopes is a complex engineering system decision-making problem, and the stability of slopes is affected by internal and external factors in many ways, such as the influence of slope geology and rock conditions on slope stability. To divide by clear boundaries, a certain range can only be roughly determined according to the experience of experts and the relevant regulations of the norms. Most of the existing evaluation and early warning methods for slope stability are based on monitoring displacement, and there is no necessary monitoring of slope stability. The stability safety factor, slope safety vibration velocity, and critical vibration velocity are predicted. Therefore, when performing blasting operations on open-air rock, the stability of the slope near the blasting site cannot be predicted. The upper limit of the

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