Analysis of freeze shaft wall damage in dongrong no . 3 coal mine 东荣三矿冻结段井壁破坏原因简析
2.
Application of combined support on the condition of complex roof in dongrong no . 3 coal mine 复合顶板条件下联合支护技术在东荣三矿的应用
3.
Practice and recognization of three - dimensional earthquake investigation in dongrong no . 3 coal mine 三维地震勘探在东荣三矿的实践和认识
4.
Fully mechanized longwall top coal caving mining with light weight hydraulic powered supports applied to no . 30 seam mining in dongrong no . 3 mine 轻放工艺在东荣三矿30号煤层开采中的应用
