A model and method for simulating rough undulating fracture surface and fracture opening of rock mass
A technology for simulating rock mass and fissure opening, applied in the field of rock seepage, it can solve the problem of inability to simulate the flow state of fluid seepage, and achieve the effect of high production efficiency and simple processing process.
Active Publication Date: 2022-04-22
BEIJING UNIV OF TECH
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Problems solved by technology
Since the existing devices cannot simulate the real flow state of fluid seepage in the rough fracture surface of the actual rock mass, a visual model for observing the flow law of fluid in the fracture surface with different fracture surface roughness and different fracture openings is designed. is very necessary
Method used
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Embodiment 1
[0031] Experimental process such as Figure 5 As shown, the device includes 1-model; 5-flow box; 6-water platform; 7-transparent hose; 8-water tank; 9-recycling box;
[0032] First, scan the rock mass fissure surface that needs to be simulated to obtain a three-dimensional fissure surface map, and remove the interference of impurities in the rock mass by identifying and converting the image to obtain an accurate rock mass fissure surface map, and determine its ups and downs at a certain distance shape.
[0033] Make model 1, such as figure 1 The shown model 1 is made up of two plexiglass plates 2 , an insert block 3 , and an insert plate 4 . Slots 2a and grooves 2b of the same shape and size are engraved respectively on two plexiglass plates 2, according to the ups and downs of each position of the upper and lower rock mass fissure surfaces, the raised shape on the plug-in block 3a with protrusions is made, and the The protruding plug 3a is inserted into the position of the...
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The invention discloses a model and method for simulating the rough undulating fissure surface and crack opening of rock mass. The model is made of two plexiglass plates, and rectangular grooves of the same shape and size are engraved on the surface of the plexiglass plates at equal intervals. According to the shape and size of the groove, make the matching plug. The plug can be inserted into the groove and seal the groove. After insertion, there is no gap between the plug and the groove, and paint between the plug and the groove The upper epoxy resin is used for sealing, and the groove sealed by the insert block is at the same level as the surface of the plexiglass plate, so that the surface of the plexiglass plate forms a smooth flat plate. This model simulates random undulations in the rock mass by making protruding inserts to study a variety of rough undulating shapes and undulating positions. It is only necessary to design the protrusions on the protruding inserts into corresponding shapes and insert them It only needs to be placed in the corresponding groove. The present invention has simple processing process and high production efficiency, and considers the coupling influence of crack surface roughness and crack opening on seepage characteristics.
Description
technical field [0001] The invention relates to the technical field of rock seepage, in particular to a model for simulating the rough and undulating fissure surface and crack opening of an actual rock mass and a method for performing fissure seepage experiments using the model. Background technique [0002] With the continuous development of human society and economy, the scope of engineering construction and production is becoming wider and wider, such as petroleum engineering, nuclear waste storage, water conservancy engineering and mining and other large-scale construction projects, and the interaction between rock mass and fluid makes the engineering The problem becomes more complicated and difficult, which affects the development of the project, and even the safety of the project. Water damage accidents caused by rock mass seepage also occur frequently. More than 90% of coal mine water inrush accidents in my country are related to rock formation water seepage, and more t...
Claims
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IPC IPC(8): G01N15/08
CPCG01N15/0806G01N15/0826
Inventor 范立峰李博王惠栋
Owner BEIJING UNIV OF TECH