HIGHLIGHTS
SUMMARY
As the depth of the coal mine increases, the conditions for gas deposition become complex. Crossing borehole is a widely used technique in coal mine gas pre-drainage, neighboring layers, and gas management in mining areas, especially in strip pre-drainage of coal mine tunnels. When constructing upward crossing boreholes in bottomslab grid tunnels, high-pressure water to induce borehole blowout was used, forming several borehole blowouts in the range of the hole group, causing the stress redistribution 2 of 14 of the coal body. The literature concluded that the difference in the gas . . .
If you want to have access to all the content you need to log in!
Thanks :)
If you don't have an account, you can create one here.