Mining roof plate absciss layer warning instrument and measurement method

Abstract

The invention provides a mining roof plate absciss layer warning instrument and a measuring method, belonging to the filed of automatic measurement of mine. A mechanical device is mounted on a common anchor rod exposed out of a roof plate to directly replace an anchor rod screw cap and a gasket; the subsidence of the roof plate or the movement of the agsciss layer directly acts on a indicating dial, and the mechanical device transforms the displacement into rotation of a pointer for direct indication; the cup-shaped indicating dial (2) is sleeved outside a roof plate screw cap (1); one end of an irregular spiral steel band (3) penetrates through the cap-shaped indicating dial (2) to be fixed on one end of the roof plate screw cap (1), and the other end is screwed into a measuring handle (5) and penetrates through a pressure spring (4) to be connected with and fixed to a stop block (6) arranged in the measuring handle (5); a pointer (9) is fixed on a pointer seat (8); and the pointer seat (8) is tightly locked on the end part of the measuring handle (5) by a fixing jackscrew (10). The mining roof plate absciss layer warning instrument is mainly used for measurement and early warning of roof plate collapse in a mine and coal mine tunnel and on an extraction coal face.

Description

technical field [0001] The invention provides a mine roof detachment early warning instrument and measurement method, which belong to the field of mine automatic measurement, and specifically relate to a measuring instrument that can automatically measure and visually indicate the roof sinking or detachment of mine or coal mine roadway and mining working face. It is used in the measurement and early warning of roof collapse in mines and coal mine roadways and mining faces. technical background [0002] At present, two types of measuring equipment and methods are used for the on-line monitoring of roof subsidence and abscission in mines and coal mines - force-measuring bolts or different types of abscission instruments. Because the former adopts the electronic measurement method, that is, the sinking pressure is converted into an electronic signal to realize the detection of the state, its structure is complicated, the processing cost is high, and it is not easy to popularize...

AI Technical Summary

Problems solved by technology

Due to the use of electronic measurement methods, the former converts the sinking pressure into electronic signals to realize the detection of the state. Its structure is complex, the processing cost is high, and it is not easy to popularize.

The latter adopts mechanical measurement. Although the structure is simple, the measuring range is small and it is difficult to obtain the measuring points. Its improved type must also place special steel wires in the holes of the top plate, supplemented by a special measuring mechanism, to complete the state monitoring. Providing data for professional engineering and technical personnel and management personnel also has many inconveniences for the majority of miners

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