陕西煤炭2025，Vol.44Issue(9)：101-105,5.DOI:10.20120/j.cnki.issn.1671-749x.2025.0918
切顶后深部煤矿沿空留巷柔模墙支护矿压显现规律研究
Behavior law of mine pressure for flexible formwork wall-supported gob-side entry retaining of deep coal mines after roof cutting
焦金宝 1岳喜占 1吴玉意 2崔猛 1秋丰岐 2郭林1
作者信息
- 1. 中煤新集能源股份有限公司,安徽 淮南 232170
- 2. 中煤能源研究院有限责任公司,陕西 西安 710054
- 折叠
摘要
Abstract
In order to explore the mine pressure behavior law of gob-side retaining roadway supported by flexible formwork wall under the conditions of roof cutting,taking the 360804 working face of Xinji No.1 mine as the background,the deforma-tion of roof and force change of unit support were measured by field monitoring means,and the roof cutting effect and road-way forming effect were evaluated.The results show that mine pressure on the side of the flexible formwork wall is more se-vere than that on the side of the coal side in the mining process,and the mine pressure shows obvious asymmetry.The sup-port strength of the side of the flexible formwork wall should be increased when the roadway is retained.The law of mine pressure development in retaining roadway shows obvious stage characteristics:the roadway mine pressure development de-gree is weak within 0～15 m of lagging face;In the range of 15～35 m lagging working face,the mine pressure of roadway is more severe.After 35～85 m lagging working face,the roadway mine pressure becomes slow.After the lagging working face being 85 m,the roadway mine pressure becomes stable,and the mine pressure mainly concentrates in the range of 15～35 m of the lagging working face.It is necessary to strengthen the roadway temporary support within this range.The engineering practice shows that the roadway roof collapses along the cutting seam effectively,and it is feasible to adopt the support mode of anchor mesh cable and flexible formwork concrete wall combined with unit support and single pillar.关键词
深部开采/沿空留巷/切顶卸压/柔模墙支护/矿压显现规律Key words
deep mining/gob-side entry retaining/roof cutting and pressure relief/flexible formwork wall support/mine pressure behavior分类
矿业与冶金引用本文复制引用
焦金宝,岳喜占,吴玉意,崔猛,秋丰岐,郭林..切顶后深部煤矿沿空留巷柔模墙支护矿压显现规律研究[J].陕西煤炭,2025,44(9):101-105,5.
