Offshore mining top board seepage flow sudden inflow test method and device

The technology of a test device and a test method is applied in the field of test methods and devices for seepage water inrush of an underwater mining roof, which can solve the problems of inconvenient measurement of the distribution of cracks and displacements in a model, and achieve the effect of improving accuracy and depth.

Active Publication Date: 2008-11-19
CENT SOUTH UNIV
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Problems solved by technology

Traditional measurement methods are not convenient for measuring the distribution of model cracks and displacements. Advanced measurement technology should be used to ensure that the test device and test method can achieve

Method used

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  • Offshore mining top board seepage flow sudden inflow test method and device
  • Offshore mining top board seepage flow sudden inflow test method and device
  • Offshore mining top board seepage flow sudden inflow test method and device

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Embodiment Construction

[0040] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0041] Such as figure 1 Shown, a kind of underwater mining roof seepage water inrush test method of the present invention, its steps are:

[0042] (1) Build a model box: Utilize the similarity ratio to configure the model material for the test, and place the configured test material in the model box according to the actual relative position. In a preferred embodiment, the middle and upper part of the model material and the model box can The side is filled with silica gel to achieve the purpose of waterproofing, ensuring that water will not flow out along both sides of the model box during the test;

[0043] (2) Apply lateral pressure: apply lateral pressure to the model material in the model box, and keep the lateral pressure constant during the test;

[0044] (3) Apply water pressure: seal the top of the model box, and apply a set ...

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Abstract

The invention discloses an experimental method for top plate seepage and water inrush when in underwater exploitation as well as an apparatus thereof, comprising the steps of: (1) putting a configured experimental material in a model box according to the practical relative position; (2) exerting lateral pressure on the model material in the model box; (3) sealing the top part of the model box and exerting the stated water pressure on the top part of the model; (4) acquiring water pressure data, tectonic stress data, displacement digital photos and crack digital photos magnified by certain times at regular intervals in the exploitation process until the water inrush destruction takes place; (5) repeating the steps of (1), (2) and (3) to change lateral pressure and water pressure parameters, and repeating the step (4); and (6) obtaining the relation between the water pressure at the top part, the tectonic stress and the model surface displacement, model surface crack. The method and apparatus can embody the combined action of tectonic stress and water pressure at the top part and deadweight function of cover layer more factually, thereby improving the testing precision.

Description

technical field [0001] The invention mainly relates to the field of test models for underwater mining, in particular to a test method and device for seepage and water inrush on roof plates of underwater mining. Background technique [0002] With the rapid development of the economy, the demand for various mineral resources is strong, which promotes the rapid development of the mining industry. The huge and continuous demand, and the resource constraints that have begun, have led people to start betting on underwater ore mining. Underwater mining is a kind of ore body that is difficult to mine. Underwater mining technology, especially seabed mining, needs further research. One of the key issues is the research on the mechanism and control technology of underwater mining roof water inrush. The consequences of underwater mining roof water inrush are unimaginable, and its research is of great significance to the safe and efficient mining of underwater mining and the critical m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00
Inventor 李夕兵彭述权刘爱华赵国彦陈红江
Owner CENT SOUTH UNIV
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