Method for obtaining permeability coefficients of coal mine roof through water draining experiment
A technology of water discharge test and permeability coefficient, which is applied in electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of manpower, material resources, large differences in water volume, and result errors, and achieve the effect of improving accuracy
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[0027] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0028] Figure 1 to Figure 6 Some embodiments according to the invention are shown.
[0029] Such as figure 1 Shown, the method steps for obtaining the permeability coefficient method for the coal mine roof water discharge test of the present invention are:
[0030] S11. According to the hydrogeological conditions of the mining area, set the water discharge holes required for the water discharge test on the roof and select the observation holes;
[0031] S13. Collect the observation data of the observation hole under the condition of drilling water in the working face within a predetermined time before the water discharge test, that is, time-water level data;
[0032] S15. Open the water di...
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