Roof dynamic state monitor for comprehensive mechanization filling coal mining goaf

A comprehensive mechanized and filling coal mining technology, which is applied to mining equipment, earthwork drilling, mining equipment, etc., can solve the problem of inability to measure the subsidence, and achieve the effects of reducing the difficulty of measurement, accurate measurement data and simple structure

Active Publication Date: 2014-08-20
CHINA UNIV OF MINING & TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the goaf is densely filled with solid materials, other equipment cannot

Method used

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  • Roof dynamic state monitor for comprehensive mechanization filling coal mining goaf
  • Roof dynamic state monitor for comprehensive mechanization filling coal mining goaf
  • Roof dynamic state monitor for comprehensive mechanization filling coal mining goaf

Examples

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[0022] An embodiment of the present invention will be further described below in conjunction with the accompanying drawings:

[0023] figure 1 As shown, the integrated mechanized filling coal mining goaf roof dynamic monitor of the present invention is mainly composed of monitoring components and multi-stage telescopic rods; the monitoring components include a chassis 12, a displacement meter support 9 arranged on the chassis 12, and a displacement meter The support 9 is provided with a base cylinder 5, the base cylinder 5 is provided with a multi-stage telescopic rod, and the base cylinder 5 is provided with a spring support 8 and a grating displacement meter 15 inserted in the spring support 8. The grating displacement meter 15 includes four parts: a scale grating, an indicating grating, an optical path system and a measuring system. When the scale grating moves relative to the indicating grating, it forms light and dark moire fringes that are roughly sine-distributed; The rela...

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Abstract

A roof dynamic state monitor for a comprehensive mechanization filling coal mining goaf is composed of a monitor base, a multi-level telescopic rod and an underframe. The monitor base is composed of a base cylinder, a spring, a transmission cable, a pattern displacement meter and a guide rod, wherein a displacement meter support, a protective port, a spring support and a range limiting plate are arranged in the base cylinder, the pattern displacement meter contains a chip, the base cylinder is fixed on the underframe with screws, the spring is arranged in a clamping groove of the spring support, the pattern displacement meter is arranged in a clamping groove of the displacement meter support, the guide rod is directly connected to the pattern displacement meter, the guide rod and the pattern displacement meter are arranged in the spring in a sleeved mode, and the transmission cable is connected with the chip. The multi-level telescopic rod is composed of a first-level rod body, a second-level rod body and a third-level rod body, wherein the first-level rod body is installed in the base cylinder and is in direct contact with the range limiting plate on the guide rod, the second-level rod body is fixed in an installation groove of the first-level rod body through a fastening bolt, and the third-level rod body and the second-level rod body are fixed through a fixing bolt. The roof dynamic state monitor can directly and accurately monitor the dynamic subsidence of a roof and is ingenious in structure and convenient to use.

Description

technical field [0001] The invention relates to a comprehensive mechanized filling coal mining goaf roof dynamic monitor, which is especially suitable for the working face in the filling coal mining goaf to detect the sinking amount of the roof. Background technique [0002] In filling coal mining, the average tamping force of the tamping mechanism behind the hydraulic support to the filling material is 2MPa, which can make the filling material preliminarily dense. Since the gob is densely filled with solid materials, other equipment cannot measure the sinking of the roof above the densely filled material in the goaf. However, the roof subsidence of the filling goaf has a direct impact on the failure pattern of the overlying strata and the surface subsidence, so it is very important to measure the roof subsidence of the filling goaf, and it is also an urgent problem to be solved on site. . Contents of the invention [0003] Technical problem: The purpose of the present i...

Claims

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Application Information

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IPC IPC(8): E21F17/18
CPCE21F17/18
Inventor 张强张吉雄夏炜阳李剑
Owner CHINA UNIV OF MINING & TECH
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