Multifunctional monitoring device for mining subsidence land damage in coal mining area

Abstract

The invention discloses a multifunctional monitoring device for mining subsidence land damage in a coal mining area. The multifunctional monitoring device comprises a subsidence observation pillar buried in a main section of a mining face, a vertical connection channel is embedded in the center of the subsidence observation pillar, at least three layers of horizontal connection channels are embedded in the subsidence observation pillar, the horizontal connection channels penetrate to the side of the subsidence observation pillar, the horizontal connection channels are perpendicular to the vertical connection channel and communicate with the vertical connection channel, the top of the vertical connection channel communicates with a main horizontal connection channel, and a data collector communicating with a central processor is arranged at a position of the main horizontal connecting channel extending out the subsidence observation pillar, and the three layers of the horizontal connection channels are, from top to bottom, a first layer horizontal connection channel, a second layer connection channel, and a third layer connection channel; soil moisture sensors are arranged on the outside of the three layers of the horizontal connection channels, and data lines on the soil moisture sensors correspondingly pass through the corresponding horizontal connection channels to enter thevertical connection channel, and are finally communicated with the data collector through the main horizontal connection channel. Dynamic monitoring, unattended in a certain period of time, and an effect of multi-level non-destructive monitoring can be achieved.

Description

technical field [0001] The invention relates to a multi-functional monitoring device for mining subsidence land damage in a coal mining area, in particular to fixed-point monitoring of main features of land damage such as movement and deformation of the ground surface and soil water content in the mining process, so as to realize unattended operation within a certain period of time. Background technique [0002] my country is a big consumer of coal resources. The proportion of coal resources in my country's primary energy consumption is as high as 70%. The mining of coal resources will inevitably cause different degrees of subsidence, damage, and occupation of land resources. The damaged land needs to pass through land Reclamation and other measures to restore it to its original state and level of productivity. Among them, the characteristics, degree and distribution of land damage are the most important basis for selecting reclamation techniques and measures. [0003] Due t...

AI Technical Summary

Problems solved by technology

However, coal mining is a continuous production activity. Usually, the mining cycle of a working face is more than one year, which brings certain difficulties to on-site monitoring. In addition, the characteristics of land damage have multiple indicators, such as movement deformation and soil moisture content. Changes, etc., which require a lot of manpower and time to complete the acquisition of various data

In the previous monitoring process, several time nodes were designated for monitoring, resulting in data discontinuity

Images