Continuous monitoring system of overburden rock displacement in ore bed mining process and structuring method thereof

Abstract

The invention discloses a continuous monitoring system of overburden rock displacement in an ore bed mining process, which comprises an inclination measuring drilling hole, an inclination measuring pipe assembly, a monitoring device and a monitoring station. When in use, a plurality of fixed inclinometers are arranged at different positions as required so as to realize the continuous whole-coursemonitoring on mined overburden rock displacement; meanwhile, the monitoring device for a flexible chain structure can be used for preventing the damage of overburden rock movement on instruments so as to ensure monitoring is carried out smoothly; and the monitoring system is used for evaluating the space-time influence degree of the mining to overburden rock so as to provide a basis for the judgment of the influenced degree and the safety of deep mining operation execution, facilities in an overburden rock stratum, ground facilities, and the like. In addition, the invention also discloses a method for structuring the monitoring system, wherein methods for embedding an inclination measurement pipe, carrying out anti-sliding safety protection during lowering the inclination measurement pipe, lowering the inclination measurement pipe when water or no water exists in the drilling hole, fixing the inclination measurement pipe by deep hole grouting, and the like not only effectively solve the problem of huge difficulty on installing deep-hole inclination measurement pipes, but also effectively improve the construction efficiency and the safety.

Description

technical field [0001] The invention relates to the field of rock strata movement monitoring, in particular to a continuous monitoring system for overburden displacement during mining of a mine and a construction method thereof. Background technique [0002] When the mining seam is deep, the change of the stress field of the mining surrounding rock caused by the movement of the overlying strata caused by the mining process is the source of accidents such as roadway collapse, gas outburst, rock burst, underground water seepage, and surface subsidence in the mining face. , will also play a decisive role in the deformation of the roadway, wellbore and ground drilling casing in the overlying strata, monitor the state of strata movement in real time, draw a curve to obtain the change trend, and evaluate the stability of the overlying strata caused by mining. Preconditions and important means to prevent various disasters. [0003] In the prior art, the monitoring of the overlying...

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Problems solved by technology

[0003] In the prior art, the monitoring of the overlying strata is only the application of small deformation monitoring in the early stage of mining with the installation of movable inclinometers in ground boreholes. This technology has the following disadvantages: (1) It is limited by the conditions of instruments and equipment , the range of deformation monitoring is limited, and the number of monitoring times will also be limited due to the limitation of manpower and material resources, and it is impossible to monitor the displacement of the entire overlying strata continuously with large deformation; (2) due to the movement of overlying strata caused by mining, It is easy to cause the monitoring instrument to be unable to be lowered into the borehole; (3) It is impossible to continuously monitor the condition of the overlying strata for a long time

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