On-line monitoring device and method of mining overburden stratum movement of shallow coal seam

Abstract

The invention provides an on-line monitoring device and a method of mining overburden stratum movement of a shallow coal seam and belongs to the field of monitoring equipment for coal mines and metal mines. The shallow coal seam is buried shallowly, after the coal seam is mined, a stratum controlling the overburden stratum movement is just a key layer, and not all strata are required to be monitored, so that the device and the monitoring method can monitor multiple strata simultaneously movably. The device comprises a ladderlike compressor, pressure sensors, a converter and a data acquisition device. The ladderlike compressor is connected with the pressure sensors; an inner rod of the compressor moves down due to sinking movement of an overburden stratum; the pressure sensors generate signals and are connected with the converter; the converter converts pressure signals into data signals; and the data acquisition device is connected with the converter and acquires data converted by the converter. The device and the method realize real-time monitoring of the overburden stratum movement of the shallow coal seam through data acquisition, data transmission and data processing, and can visually show overburden stratum movement and deformation.

Description

technical field [0001] The invention belongs to the field of monitoring equipment and methods for coal mines and metal mines, and in particular relates to a device and method for monitoring the movement and subsidence of key overlying rock strata after shallow coal seam mining. Background technique [0002] The depth of the shallow coal seam is small. After the coal seam is mined, it is not all the rock formations that control the movement of the rock formations, but only the thick and high-strength rock formations. In the prior art, the ground surface subsidence and deformation values ​​are mainly obtained by using GPS-RTK combined level measurement and surface subsidence prediction software calculations, but these methods cannot know the moment-to-moment movement of key rock formations, such as subsidence speed, subsidence time, break time etc. Contents of the invention [0003] In order to solve the above-mentioned problems in the prior art, the present invention provi...

AI Technical Summary

Problems solved by technology

In the prior art, the ground surface subsidence and deformation values ​​are mainly obtained by using GPS-RTK joint level measurement and surface subsidence prediction software calculations, but these methods cannot know the moment-to-moment movement of key rock formations, such as subsidence speed, subsidence time, break time etc.

Images