Mining fracturing simulating test device for sealing drilling

Abstract

The invention belongs to the technical field of a mining fracturing simulating device for sealing drilling and relates to a mining fracturing simulating test device for sealing drilling, wherein a model frame is vertically provided with a lateral loading device which is respectively connected with a hydraulic power control system; the inside of the model frame is provided with an independent compression clapboard, a drilling monitoring sensor is arranged in the middle drilling hole of the entire device, the top orifice side wall of the drilling hole is provided with a top bush, the inside wall of the drilling hole is provided with a sensing sheet for measuring electrode stress and strain, the top of the entire device is symmetrically provided with a compression plate whose upper end is provided with a top loading device, a plurality of stress monitoring points are arranged in the entire device, a computer control processing system is electrically connected with an ultrahigh density electrical measurement system, a stress data collecting plate, an imaging data collecting plate and the hydraulic power control system respectively; the device is simple in structure, convenient to maintain, install and operate, scientific in principle and precise in collected data.

Description

Technical field: [0001] The invention belongs to the technical field of closed borehole mining damage simulation test equipment, relates to a closed borehole mining damage simulation test device, and studies the damage mechanism of the closed borehole under the mining response. Background technique: [0002] With the continuous increase of coal mining depth and the change of mining methods, the conditions for the occurrence of water hazards in coal mines and the methods of water hazards have undergone great changes. The hidden dangers of coal mine safety production. Combined with the research status at home and abroad, no further research has been carried out on the sealing mechanism of the borehole and the secondary aqueduct caused by the failure and instability of the closed borehole under the influence of mining. Therefore, a simulation test device for mining failure of closed boreholes is sought to observe the development of unstable fissures caused by mining failures o...

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Problems solved by technology

[0005] Compared with the prior art, the present invention uses a closed borehole mining failure simulation test device to conduct in-depth research on the failure, instability and water damage of closed boreholes under mining conditions, and solves the problem of coal mines with closed boreholes currently encountered in mines. It can solve problems such as column retention, water inrush from poorly sealed boreholes, and water inrush due to mining damage in closed boreholes, liberate coal resource reserves threatened by water damage from closed boreholes, and provide guidance for optimizing the layout of mining systems; its structure is simple and easy to maintain and installation, the principle is scientific, the operation is convenient, and the collected data is accurate, which has guiding significance for the water inrush problem in closed boreholes encountered in coal mine production

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