加高加固
Heightening and Consolidation
半煤岩软底巷道
Semi Coal and Rock Roadway with Weak Floor
半圆拱形巷道
semi-circular arched tunnel
扁宽断面巷道
roadways of flat and wide cross-section
标定巷道开掘方向
Marking the Direction of Laneway
采动敏感型巷道
mining induced sensitive roadway
采矿巷道围岩支护
design of surrounding rock support system in mine entries