Figure 5 | Scientific Reports

Figure 5

From: Research on controlling gas overrun in a working face based on gob-side entry retaining by utilizing ventilation type “Y”

Figure 5

The volume of air leakage under different ventilation modes. Figure 5 illustrates the air leakage under retaining different lengths of gob-side entry by simulation. By adjusting the wind resistance of the lane of the roadway contact for the prevention of the floor outburst or the prevention roadway of the floor outburst. The airflow will move from the retaining gob-side entry to the goaf within the working face’s range of 0–500 m ahead. As the length of the retaining gob-side entry increases, the air leakage gradually increases. When the working face is pushed forward 500 m, the air leakage would be the largest amount of 247 m3 / min. When the range changes between 500 m through 1300 m, the air leakage would gradually decrease.

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