关键词: 巷道, 穿层施工, 联合支护

Abstract: In response to the technical challenges such as the complex construction conditions，high construction difficulty and low efficiency of the 15112 transportation channelway system roadway of Nanhe Coal Industry Company，a comparative analysis of the construction techniques of the system roadway through technical research was carried out. The close-range coal seam penetration construction technology was adopted，and the artificial false roof support technology was used for the roof of the penetration section. For the triangular coal pillars in the reverse excavation section，the anchor cable suspension shed + flexible formwork pouring support technology was used. Judging from the actual application effect on site，the con⁃ struction technology was optimized，the excavation process was simplified，the number of tunnel penetration times was reduced，and the system tunnel excavation cycle was shortened by 8 d. After the combined sup⁃ port was adopted，the stability of the surrounding rock in the special area was controlled，and remarkable application results were achieved.

Key words: roadway, layered construction, joint support