大采高综采工作面超大断面切眼支护技术

摘要

针对大埋深近水平大采高综采工作面切眼断面超大、支护难的实际情况，使用综掘机掘进，采用锚网+锚索+钢梁联合支护和单体支柱加π型梁支护的方式，能够较好地对大跨度、大高度条件下的切眼顶板及两帮围岩起到支护控制作用。本文介绍了在综掘工艺下，该支护方式的具体支护参数及施工工艺，并成功应用于某矿切眼。%Considering the difficulty of supporting engineering in fully mechanized mining face, the mechanized digging machine and combined supporting technique withπ type beam supporting were used to construct a supporting system for the cutting roadway roof and surrounding rock in large span and great height condition. In this article, the author described the specific supporting parameters and construction process of the mechanized tunneling.