Monitoring device for deformation of top and bottom plates of coal mine roadway
A monitoring device and technology of coal mine roadway, applied in the direction of mechanical solid deformation measurement, etc., can solve the problems of hindering mine pressure, large measurement error, and inconvenient portability of equipment, so as to achieve accurate measurement results, prevent interference from external factors, Avoid rotation and skew effects
Inactive Publication Date: 2019-05-28
李伟涛
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Problems solved by technology
At present, the traditional device for measuring the approaching amount of the top and bottom plates can only measure the sum of the sinking of the roof and the bottom of the bottom, but cannot measure the sinking of the top and the bottom of the bottom respectively, and there are large measurement errors and large equipment volume Disadvantages such as inconvenient to carry have greatly hindered the study of mine pressure
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[0021] The technical scheme and structure of the present invention are described below in conjunction with the accompanying drawings, so that those skilled in the art can understand.
[0022] As shown in the figure, the present invention relates to a monitoring device for the deformation of the roof and floor of a coal mine roadway, which includes a reading steel pipe 6, and the outer wall of the reading steel pipe 6 is marked with a scale value 5, and the positions with scales are all hollow structures, and two springs are placed in the middle 7. At the same time, a slide rail 9 is arranged on the inner wall of the reading steel pipe. Two identical ordinary steel pipes 3 are respectively nested at both ends of the reading steel pipe 6 , and the joints between the two and the reading steel pipe 6 are connected to the zero adjustment nut 4 by threading. In the other end of two common steel pipes 3, insert telescopic reference rod 1 again, can adjust the length of telescopic re...
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The invention relates to a monitoring device for deformation of top and bottom plates of a coal mine roadway. The device comprises a reading steel pipe, an outer wall of the reading steel pipe is marked with a scale value, a position with the scale is of a hollow structure, and two springs are placed in the middle. An inner wall of the reading steel pipe is provided with a sliding rail. Two identical ordinary steel pipes are respectively nested at the two ends of the reading steel pipe, and the positions of the two ordinary steel pipes connected with the reading steel pipe are connected with zeroing nuts respectively by screwing. Telescopic reference rods are inserted into the other ends of the two ordinary steel pipes, the length of the reference rods can be adjusted according to the height of the roadway, and a magnetic base finally contacts a threaded nail with a bottom. Equidistant eyelets are formed in each of the steel pipes in the axial direction, and pins can be inserted for fixing. The device has the advantages of low cost, strong operability, easy availability of raw materials and the like. The device overcomes the defect that a general measuring device can only measure the convergence amount of the top and bottom plates, and can not respectively measure the sinking amount of the top plate and the bottom heaving amount of the bottom plate, and has great practical significance for analyzing the pressure changes of a fully mechanized roadway mine.
Description
technical field [0001] The invention relates to a measuring device, in particular to a monitoring device for the deformation amount of the roof and floor of a coal mine roadway. Background technique [0002] In the process of coal mining, it is necessary to closely observe the degree of mine pressure, clarify the law of overlying rock movement and determine reasonable support technology to prevent safety accidents. The observation of the approaching amount of the roof and floor in the mining roadway is particularly important . At present, the traditional device for measuring the approaching amount of the roof and floor can only measure the sum of the sinking of the roof and the bottom of the bottom, but cannot separately measure the sinking of the top and the bottom of the bottom, and there are large measurement errors and large equipment volume Disadvantages such as inconvenient to carry have greatly hindered the study of mine pressure. Contents of the invention [0003...
Claims
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IPC IPC(8): G01B5/30
Inventor 李伟涛
Owner 李伟涛