- Clastic rock and low-grade metamorphic rock, and the non-disease area is mainly in the coal stratum.
- Controlled source audio magnetic telluric (CSAMT) is an effective approach to detect deep coal stratum in complicated-terrain mountain.
- The author supposed that it is feasible for us to take the methods discussed in this paper to handle the issue of the coal stratum pressure.Some metrical problems is also studied here in the paper.
- Baste on the analysis of study contents and methods of coal faults,mechanic characteristics of rock mass in coal stratum and the theory of cause of fault formation were put forward.
- Collapse Treatment for Coal Stratum of Kuigang Tunnel
- We need to replenish our stocks of coal.