A Closed Borehole Mining Damage Simulation Test Device
A technology of mining destruction and simulation test, which is applied in the direction of soil material testing, material inspection products, etc., can solve problems such as water inrush from bad drilling, and achieve the effects of convenient operation, simple structure, and easy installation
Inactive Publication Date: 2016-08-17
SHANDONG UNIV OF SCI & TECH
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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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[0009] The main structure of this embodiment includes an independent pressurized partition 1, a pressurized plate 2, a drilling roof casing 3, a top loading device 4, a side loading device 5, a drilling imaging detection sensor 6, and a measuring electrode stress and strain sensor 7 , stress monitoring point 8, hydraulic pipeline 9, ultra-high density electrical measurement system 10, stress data acquisition board 11, imaging data acquisition board 12, hydraulic power control system 13, computer control processing system 14 and model frame 15; closed drill The left and right sides of the hole mining failure simulation test device are symmetrically equipped with model frames 15, which are fixed models and play a supporting role when the model is loaded with lateral and vertical pressure; the vertical distribution of the model frame 15 is provided with 3 -7 lateral loading devices 5, when the lateral loading devices 5 work, they press the borehole as a component of the simulated ...
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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, and relates to a closed borehole mining damage simulation test device, which studies the damage mechanism of closed boreholes under mining response. Background technique: [0002] With the deepening of coal mine mining and the change of mining methods, the conditions and methods of water damage in coal mines have undergone major changes. Among them, the sealing of bad boreholes is an important factor that induces water damage in coal mines and is a threat. Hidden dangers of coal mine safety production. Combining the research status at home and abroad, there is no further research on the sealing mechanism of boreholes and the secondary water-conducting channels caused by the failure and instability of closed boreholes under the influence of mining. Therefore, a closed borehole mining failure simulation test device is sought to observe the developme...
Claims
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IPC IPC(8): G01N33/24
Inventor 魏久传肖乐乐牛超尹会永郭建斌谢道雷张伟杰
Owner SHANDONG UNIV OF SCI & TECH