Visual experiment system device used for simulating grouting plugging for water inrush of roadways

[0021] Such as figure 1 As shown, the present invention is implemented as follows: The visual test system device for simulating water inrush grouting and blocking of roadways of the present invention is composed of water moving system, roadway model system, grouting system, view recording system, flow monitoring System, data acquisition system, support system, waste liquid collection system are composed of 8 parts. The dynamic water system consists of (1) water source pipe, (2) water collection tank, (3) drain pipe, (4) water inrush pipeline, (5) control valve and (6) water tank bracket; (6) water tank bracket is made of steel plate material It is made to ensure the stability and safety of the whole part of the moving water system. It can freely adjust the lifting height, so that (2) the height of the water collection tank can be adjusted up and down, and different water inrush pressures can be simulated by the height of the water head; (1) One end of the water source pipe is connected to the outside The other end of the water source extends into (2) the water collection tank, and (5) a control valve is installed on it, which can adjust the water flow; (2) the top side of the water collection tank is lower and is provided with an overflow collection device, connected to (3) The drain pipe can drain (2) the overflowing water from the water collection tank in time to ensure the establishment of a stable water head; (4) One end of the water inrush pipeline is connected to (2) the lower end of the water collection tank, and (5) a control valve is installed on it. The flow rate is adjusted to simulate the test water inrush flow, and the water flow value can be displayed through the (13) flow totalizer connected at the other end. The roadway model system is composed of (7) transparent pipes and (8) scraps; (7) transparent pipes are used to simulate water inrush roadways, and can be replaced according to test needs; (8) scraps can be selected according to test needs. To simulate the gravel blocks, sand bags, etc. that were filled and thrown before grouting and plugging in the water inrush roadway. The grouting system consists of (9) high-pressure grouting machine, (10) grouting pipeline and (11) pressure gauge; according to the experimental design of single-liquid grouting or multi-liquid grouting selection (9) the number of high-pressure grouting machines, and Effectively connect with (10) grouting pipeline through a multi-way joint; (10) There are (11) pressure gauges installed on different positions of the grouting pipeline to observe the grouting pressure value, and the other end is connected to (7) transparent pipeline . The view recording system is composed of 4 (12) digital cameras distributed at different positions of the (7) transparent pipe at intervals, and its main function is to record test videos and take photos during the test. The flow monitoring system is composed of two (13) flow totalizers located at the front and back ends of the (7) transparent pipeline. Its main function is to display the water inrush flow, and to monitor the flow changes during the grouting and blocking process of the simulated water inrush roadway. The data acquisition system consists of 4 (14) pressure sensors connected at intervals (7) at different positions of the transparent pipeline and (15) DT data acquisition instrument for pressure change data acquisition and storage. Its main function is to collect and store simulated grouting (7) Pressure changes at different positions of the transparent pipe during the blocking test. The support system is composed of (16) telescopic frame, (17) telescopic table and (18) ruler; the position of 3 (16) telescopic frames used for erecting (7) transparent pipe can be moved and the height can be adjusted freely. The (18) ruler on it can adjust (7) the inclination and curvature of the transparent pipe; (17) the telescopic table is used to set up (12) the digital camera, and the height can be adjusted freely to adjust the (12) digital camera and (7) ) The distance of the transparent pipe, select the best view shooting position. The waste liquid collection system consists of (19) waste liquid pipe and (20) waste liquid bucket connected to the end of (7) transparent pipe. Its main function is to drain and store the aqueous solution during the test and part of the grouting slurry carried out. , To prevent direct discharge and pollution of water sources and the environment.

[0022] The (1) water source pipe, (3) drain pipe and (4) water inrush pipeline are all equipped with control valves to adjust the flow rate.

[0023] The (2) water collection tank is lower on one side and provided with an overflow collection device, which is connected with (3) the drain pipe.

[0024] The (6) water tank bracket can be raised and lowered freely, so that the height of the (2) water collection tank can be adjusted to reach the water head height required by the test.

[0025] The (7) transparent pipe is a large diameter (greater than 100mm) transparent pneumatic pipe, which realizes the visualization during the simulation grouting plugging test.

[0026] The (10) grouting pipeline is equipped with a multi-way joint and (11) a pressure gauge, so that the grouting pressure can be observed at any time.

[0027] The (13) flow totalizer has the function of displaying and storing instantaneous flow and accumulated flow data.

[0028] The combination of (15) DT data acquisition instrument and (14) pressure sensor has the function of collecting and storing pressure change data every set time interval.

[0029] The (16) telescopic frame is provided with a (18) ruler, and the height can be adjusted freely.

[0030] The visual test system device for simulating water inrush grouting and plugging of roadways of the present invention is a set of indoor experimental researches for simulating water inrush grouting and plugging in coal mine production units, universities and scientific research units, etc. Visual test system. It can simulate the visualization and test effect of grouting and blocking of roadways under different conditions of water inrush pressure and water inrush flow. It can also simulate the visualization and test effect of grouting and plugging in roadways with inclination and curvature during water inrush. Research to explore the grouting sealing effect and influencing factor criteria under different water inrush factors and roadway characteristics is of great significance for guiding water inrush in roadways encountered in actual underground engineering construction to adopt grouting to plug rescue and disaster relief projects. And value.