Mined-out subsidence area subsidence monitoring device

Abstract

The invention discloses a mined-out subsidence area subsidence monitoring device. The mined-out subsidence area subsidence monitoring device is characterized by comprising a controller, a fixed bearing plate and a movable bearing plate; fixed pulleys are arranged on the fixed bearing plate and the movable bearing plate, and a rope is wound on the fixed pulley between the fixed bearing plate and the movable bearing plate; one end of the rope is fixedly connected with the fixed bearing plate or the movable bearing plate, and the other end is fixedly connected with the fixed bearing plate or themovable bearing plate through a tensile displacement sensor; the fixed bearing plate is fixedly connected with an upper-layer base pile casing through a connecting rod; a base protection cylinder is provided with an outer threaded cylinder, the outer threaded cylinder is in threaded fit with the movable bearing plate, a driving motor is installed in the base protection cylinder, and the output endof the driving motor is fixedly connected with the outer threaded cylinder; and the output end of the tensile displacement sensor is electrically connected with the input end of the controller, and the output end of the controller is electrically connected with the input end of the driving motor. The device has the advantages of high applicability, high automation degree, high monitoring result accuracy, low investment cost and the like.

Description

technical field [0001] The invention relates to the technical field of environmental control in mining areas, more specifically, it relates to a subsidence monitoring device for goaf subsidence areas. Background technique [0002] Mined out area collapse refers to the ground subsidence phenomenon caused by the instability of the upper rock and soil layer under the action of self-weight due to the formation of space by underground excavation. With the increasing demand for coal and the expansion of the scale of coal resources development, the problem of goaf subsidence has become more and more serious. While the development of coal resources has made great contributions to social and economic development, it has also had a very significant impact on the environment of mining areas. Even damage, for this reason, it is very necessary to study the subsidence monitoring of the goaf subsidence area. [0003] At present, when the goaf subsidence area subsides, the subsidence veloc...

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Problems solved by technology

[0004] However, the above-mentioned subsidence monitoring technology in goaf subsidence areas has the following defects: 1. With the more detailed division of subsidence layers with different subsidence rates, the number of measuring tapes continues to increase, the installation of measuring tapes is complicated, and adjacent measuring tapes are easy to contact and interfere with each other 2. Since one end of the tape measure is relatively fixed to the ground surface, and the other end is fixedly connected to the corresponding protective tube, the longer the length of the tape measure corresponding to the bottom protective tube is, the greater the detection error will be under the action of its own tension; 3. With the help of the ground The combined structure of the pulley and the counterweight weighs to read the subsidence value, and the accuracy of the subsidence value is easily affected by external environmental factors such as ground surface vibration, wind force, and debris attachment; 4. Reading the subsidence value can only measure the distance between each subsidence layer and the ground. The amount of subsidence is low, and its function is single; at the same time, the cost of manpower and material resources invested in the overall detection process is high, and the degree of intelligence is low, so it is difficult to popularize and apply

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