Model and method for simulating rock mass rough fluctuation fracture surface and fracture opening degree
A technology for simulating the opening of rock mass and cracks, which is applied to the model of simulating the rough and undulating crack surface and crack opening of actual rock mass, and in the field of crack seepage experiments, which can solve the problems of inability to simulate fluid seepage and flow state
Active Publication Date: 2020-06-19
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 a method for simulating a rock mass rough fluctuation fracture surface and a fracture opening degree. The model is made of two organic glass plates, and rectangulargrooves with the same shape and size are carved in the upper surface of the organic glass plate at equal intervals; inserting blocks matched with the grooves are manufactured according to the shapesand sizes of the grooves; the inserting blocks can be inserted into the grooves and seal the grooves, no gap exists between the inserting blocks and the grooves after the inserting blocks are inserted, epoxy resin is coated between the inserting blocks and the grooves for sealing, and the grooves sealed by the inserting blocks and the upper surface of the organic glass plate are located on the same horizontal plane, so that a smooth flat plate is formed on the upper surface of each organic glass plate. According to the model, random fluctuation in a rock mass is simulated by manufacturing theinsertion blocks with the protrusions, various different rough fluctuation forms and fluctuation positions are studied, only the protrusions on the insertion blocks with the protrusions need to be designed into the corresponding shapes and inserted into the corresponding grooves, the machining process is simple, the manufacturing efficiency is high, and the coupling influence of the fracture surface roughness and the fracture opening degree on the seepage characteristics is considered.
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