China Naming Network - Eight-character query< - Why is the gas emission the largest in July and August every year?
Why is the gas emission the largest in July and August every year?
The reason for this is the following：
1. The gas content of this coal seam is the decisive factor of mine gas emission.
2, the hot weather, the ground atmospheric pressure decreases and increases, will increase or decrease the mine gas emission.
3. The deeper the mining, the higher the gas content in coal seam, the wider the mining scope, the greater the exposed area of coal seam and surrounding rock, and the greater the gas emission in mine.
4. Open structural cracks caused by tensile force are beneficial to gas discharge, while closed structural cracks are beneficial to gas accumulation.