The characteristics about the breakage of coalseams at the Xiejiaji coalmine No.2 and the Xinzhuangzi coalmine indicate that the yvary greatly from seam to seam in the Huainan mining area. The coalseams of C 13 ,B 11b ,B 9b and B 4 are damaged seriously, but the ones of B 10 ,B 6,A 3 and A 1 remain almost safe and sound, and the ones of B 8 and B 7 are slightly damaged. This knowledge is helpful to preventing gas outburst and to taping the coalseam methane.
| 
推荐 
点击下列相关研究机构和相关文献作者，可以直接查到这些机构和作者被《中国知识资源总库》收录的其它文献，使您全面了解该机构和该作者的研究动态和历史。
