Inspection system and inspection method for roadway spraying sealing effect
An inspection system and roadway technology, which is applied in the direction of detecting the appearance of fluid at the leakage point and using liquid/vacuum degree to measure the liquid tightness, etc., can solve the problem of unstable mine gas gushing, unstable air flow in the roadway, and inability to inspect spraying Effect and other issues, to achieve the effect of accurate and reliable inspection results, saving manpower and material resources, and reducing the workload of re-spraying
Active Publication Date: 2022-07-19
渭南陕煤启辰科技有限公司
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Problems solved by technology
[0003] (1): The wind flow in the roadway is unstable, the wind speed at the same measuring point is different at different times, and the gas concentration is also different, which is greatly affected by the wind flow in the process of measuring the gas concentration
[0004] (2): The emission of mine gas is unstable, and the amount of gas emission in different time periods is different, and at the same time, it is greatly affected by mine pressure and mining
[0005] (3): Measuring wind flow gas concentration is an indirect measurement method. This method can only roughly test the spraying effect of the entire section or a certain section of the roadway, and cannot test the spraying effect of a specific location. It is impossible to test the entire section or a certain section. Provide targeted respray guidance
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Embodiment
[0041] A method for testing the sealing effect of roadway spraying. After the roadway is sprayed and the sprayed material is completely solidified, a Φ43mm hole is constructed near the position where the sprayed wall surface needs to be tested, and the hole depth is 2m, and the bag-type grouting hole sealer 1 is slowly pushed into In the hole, pay attention to distinguish the gas injection pipe 1-1 and the grouting pipe 1-2, and connect the grouting pipe 1-2 to the outlet end of the grouting pump 3, that is, connect the grouting pipe 1-2 to the On the output end of the grouting pump suction device 3-3, the gas injection pipe 1-1 is connected to the pressure air source 2 through the compressed air pipeline. The grouting pump stirring device 3-2 of the grouting pump 3 and the grouting pump The slurry suction device 3-3 is connected to the pressure air source 2 through the pressure air pipeline; pour clean water into the grouting pump 3, open the second valve 2-2, and slowly pour ...
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The invention discloses an inspection system and inspection method for the sealing effect of roadway spraying. A gas injection pipe and a grouting pipe are arranged on the hole device, one end of the gas injection pipe is connected to the pressure air source, and the other end passes through the bag-type grouting hole sealer, and one end of the grouting pipe is connected to the The grouting pump is connected, and the other end extends into the bag-type grouting hole sealer; the foam spray gun and the foam supply device are connected through the foam spray gun suction pipe. The invention can accurately and reliably test the spraying and sealing effect of the roadway.
Description
technical field [0001] The invention belongs to the technical field of testing the sealing effect of a coal wall sealing wall in a mine, and particularly relates to a testing system and a testing method for the sealing effect of roadway spraying. Background technique [0002] At present, the method for testing the sealing effect of spraying in underground tunnels of coal mines is to measure the gas concentration in the upper and lower airflows, that is, before and after the tunnel is sprayed, the gas concentration in the upper and lower airflows of the spraying section is measured. There are several problems with this test method: [0003] (1): The wind flow in the roadway is unstable. The wind speed of the same measuring point at different times is different, and the gas concentration is also different. The gas concentration is greatly affected by the wind flow in the process of measuring the gas concentration. [0004] (2): Mine gas gushing is unstable, and the gas gushin...
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IPC IPC(8): G01M3/12
CPCG01M3/12
Inventor 刘强王小军耿耀强胡国和高少辉赵腾飞
Owner 渭南陕煤启辰科技有限公司