An automatic protection device for goaf subsidence based on open-well combined mining

A technology of automatic protection and goaf, applied in mining devices, safety devices, mining equipment, etc., can solve the problems of large dilution rate, large amount of work and investment in mining pillar excavation, waste of mineral resources, etc., to achieve protection safety and improve detection accuracy

Active Publication Date: 2020-09-11
INNER MONGOLIA UNIV OF SCI & TECH
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Problems solved by technology

If the boundary pillar is left too thick, it will cause a waste of mineral resources, because the recovery rate of the pillar is low (only about 40%), or even less, the dilution rate is high, and the excavation work and investment for mining the boundary pillar are relatively large

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  • An automatic protection device for goaf subsidence based on open-well combined mining
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  • An automatic protection device for goaf subsidence based on open-well combined mining

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0023] In describing the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", " The orientation or positional relationship indicated by "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, so as to Specific orientation configurations and operations, therefore, are not to be construed as limitations on the invention.

[0024] An automatic prote...

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Abstract

The invention discloses an automatic goaf collapse protection device based on open-pit combined mining. The device is characterized by comprising an information acquisition processing device arranged in a goaf area and a protection device arranged in a roadway, wherein the information acquisition processing device further comprises an ultrasonic ranging sensor, a 3D acceleration sensor and a pressure sensor; the ultrasonic distance measuring sensor is arranged in the goaf and used for monitoring collapse above the goaf; the 3D acceleration sensor is arranged at the top of the goaf and used for monitoring the collapse trend; and the pressure sensor is arranged on a hydraulic support and is used for monitoring the changes of hydraulic bearing pressure and other structures. The device is used for achieving early warning and protecting equipment and personnel safety through the information acquisition device and the protection device, the protection device of the trapezoidal structure is used for coping with strong shock waves for protection, and the two aspects are combined, so that the problem that the protection device is impacted by impact waves to be deformed so as not to achieve protection or to be poor in protection effect is solved.

Description

technical field [0001] The invention relates to the field of mine protection, in particular to an automatic protection device for goaf subsidence based on combined open mining. Background technique [0002] In open-pit mining, the in-situ stress will be unloaded on a large scale as the mining progresses. Underground mining is a combined effect of loading and unloading, while open-pit mining followed by underground mining or combined open-pit mining is a more complicated unloading and unloading process. loading process. The experience of domestic and foreign mines converted from open-pit mining to underground mining shows that the slope stability is lower than that of single open-pit mining. There will be compound disturbances in the process of open well combined mining, and the slope stability is affected by many different factors. The main factors of slope instability are quite different from those in single mining. The instability of the slope will affect the underground...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F17/00E21F11/00E21F17/18
CPCE21F11/00E21F17/00E21F17/18
Inventor 康恩胜庞文娟赵泽熙孟海东刘业娇赵亚军贾廷贵
Owner INNER MONGOLIA UNIV OF SCI & TECH
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