Underground mine main ore pass material level real-time monitoring system and method

Abstract

The invention relates to an underground mine main ore pass material level real-time monitoring system and method. The system comprises a vibrating wire type stress meter, a four-channel vibrating wiredata collector and a data cable. The vibrating wire type stress meter is buried in the wall of a main ore pass at the bottom corner of the main ore pass, the vibrating wire data collector is arrangedat the top of a stage haulage roadway, and the vibrating wire type stress meter is electrically connected with the vibrating wire data collector through the data cable; and the vibrating wire data collector is connected with a ground dispatching room remote server through a network in a mine. According to the method, through a mode of burying the vibrating wire type stress meter in the supportingconcrete at the bottom of the main ore pass, a pressure value of a borehole wall is obtained; through a Janssen formula, a relation between the lateral pressure f of the bottom well wall of the ore pass and the material level H of the ore in the ore pass is established, and the relational expression of the well wall pressure value and the material level conforming to the field height is fitted through calibration of field data; and errors existing in theoretical calculation and actual measurement are eliminated, a corresponding program is compiled for calculation, and real-time monitoring ofthe material level is realized.

Description

technical field [0001] The invention belongs to the technical field of mining engineering, and in particular relates to a real-time monitoring method for the material level of a main chute in an underground mine. Background technique [0002] In the field of underground mining of metal deposits, in order to reduce costs and improve production efficiency, at the same time, with the advancement of chute excavation technology, the stage height continues to increase, and the depth and ore storage volume of the main chute also increase. The ore storage volume of the chute is an important data related to production scheduling, and is generally calculated by measuring the ore level. Affected by moisture and dust in the chute, the increase in the depth of the main chute increases the difficulty of monitoring the ore material level, especially when the on-site monitoring environment is relatively harsh, the accuracy of the traditional material level monitoring method is reduced, and ...

AI Technical Summary

Problems solved by technology

The sling method and the UAV measurement method use interval measurement, which cannot achieve real-time monitoring, and the monitoring data lags behind, which affects production efficiency and interferes with production

[0005] (2) Susceptible to environmental influences

Due to the poor ventilation in the chute, dust and water vapor will exist for a long time, which will scatter light and sound waves, resulting in a significant drop in the accuracy of laser and ultrasonic ranging, or even impossible measurement

[0006] (3) Heavy maintenance workload

The traditional measurement method needs to measure from the unloading port on the upper part of the chute. A large amount of dust generated by unloading will cover the monitoring equipment, which needs to be cleaned regularly, increasing a lot of maintenance workload

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