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通过介绍刨煤工作面收尾期间预留回撤巷技术在实际生产中的经验做法及应用效果,着重对预留回撤巷道的施工方法、注意事项、技术要求以及支护参数进行了分析,给出了回撤通道的支护方案。并结合预留回撤巷技术在小青煤矿W2712工作面取得成功的应用,证明了预留回撤巷的支护强度和断面空间能够满足生产需要,可以有效提高设备回撤速度、减少设备占用时间,为刨煤工作面安全、高效回撤提供了必要的保证。
By introducing the practical experience and application effect of the technology of reserved laneway during the completion of plowface finishing, the author focuses on the analysis of construction methods, precautions, technical requirements and support parameters of the reserved roadway, Out of the channel support program. Combined with the successful application of the reserved backholes in the W2712 working face of Xiaoqing Coal Mine, it is proved that the support strength and cross-sectional space of the reserved backlane lane can meet the production needs, which can effectively increase the speed of equipment withdrawal and reduce the equipment occupancy Time, provided a necessary guarantee for the safe and efficient withdrawal of the coal face.