厚煤层柔模快速沿空留巷工艺在神东矿区的应用

摘要

According to the high construction risk, poor airtightness and low speed in the traditional gob-side entry retaining, the 12-308 working face of Shangwan Coal Mine applied the new gob-side entry fast retaining technology, which uses gob-side entry retaining support matching with flexible template concrete pump grouting, and the advancing speed reached 15m/d in a 280�5m long and 3�8m high working face. The technology realized fast retaining of gob-side entry in thick coal seam, satisfying the demand of working face full speed advancement with small deformation of retained roadway.%针对现有沿空留巷工艺存在的施工危险性高，留巷密闭性差，留巷速度慢的问题，上湾煤矿12上308综采工作面采用新研发的沿空留巷支架配合柔模泵注混凝土沿空留巷工艺，使长280�5m，采高3�8m的工作面留巷速度达到15m／d。此沿空留巷工艺实现了厚煤层工作面快速沿空留巷，满足了综采工作面全速推进的要求，且所留巷道变形量不大，应用效果良好。