采空区下大断面切巷掘进支护工艺优化论文.pdf

2021年第2期 江西煤炭科技 -5 -
采空区下大断面切巷掘进支护工艺优化
张安慎
(山西煤炭运销集团科学技术研究有限公司"山西太原030006 )
摘 要：针对12103工作面二切巷掘进期间受巷道断面大以及上覆11103工作面采空区影响，巷道掘进期间围岩稳定性
差、顶板破碎严重、掘进效率低等技术难题，对巷道掘进过程主要存在的问题进行分析,并根据实际生产情况对原掘进支护
工艺优化，提出采取“注浆锚杆+JW 型钢带+梯形钢棚”联合支护设计，通过实际应用效果来看，联合支护设计控制巷道顶
板破碎、下沉现象，成效显著(
关键词：大断面切巷;采空区影响；联合支护；顶板控制
中图分类号:TD353 文献标识码： B 文章编号:1006-2572(2021)02-0005-03
Optimization of Supporting Technology for Large Section Cut Roadway in Goaf
Zhang Anshen
(Shanxi Coal Transportation and Marketing Group Science and Technology Research Co., Ltd., Taiyuan, Shanxi 030006 )
Abstract： In view of the technical problems such as the poor surrounding rock stability, severe roof fracture, and low excavation
efficiency affected by the large roadway section and the overlying 11103 working face during the excavation of the 12103 working
face, the article analyzes the main problems in the roadway excavation process, optimizes the original excavation support
technology according to the actual production situation, and proposes the & grouting bolt - JW