急倾斜“三软”煤层异形断面巷道锚网索梁联合支护技术
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摘要
基于急倾斜"三软"煤层围岩应力呈非对称分布且顶底板强度低、煤层松软易垮的特性,提出了异形断面分布切割、锚网索梁非对称联合支护方案,通过工业性试验结果表明:在异形断面非对称锚网索梁联合支护工艺合理、参数可靠、质量有保障的前提下,能够有效地控制急倾斜"三软"煤层顶板变形破坏和高帮煤体松散垮冒,能够保证巷道施工质量与安全,同时为提高巷道掘进单进水平提供保障。
As the stress is asymmetrically distributed in the surrounding rock of three-soft coal seam which is of low roof and floor strength, soft and easy to collapse, the unsymmetrical joint support scheme of the special-shaped section distribution cutting and the anchor net cable beam is proposed. Results of the industrial test show that the joint support can effectively control the deformation and failure of three-soft coal seam roof and the coal body loosening and caving at the high part of coal wall,under the premise of reasonable supporting technology,reliable parameters and guarantee of quality,which can ensure the quality and safety of the tunnel construction,and also provide a guarantee for the improvement of specific roadway tunneling efficiency.
As the stress is asymmetrically distributed in the surrounding rock of three-soft coal seam which is of low roof and floor strength, soft and easy to collapse, the unsymmetrical joint support scheme of the special-shaped section distribution cutting and the anchor net cable beam is proposed. Results of the industrial test show that the joint support can effectively control the deformation and failure of three-soft coal seam roof and the coal body loosening and caving at the high part of coal wall,under the premise of reasonable supporting technology,reliable parameters and guarantee of quality,which can ensure the quality and safety of the tunnel construction,and also provide a guarantee for the improvement of specific roadway tunneling efficiency.
引文
[1]伍永平,张永涛,解盘石,等.急倾斜煤层巷道围岩变形破坏特征及支护技术研究[J].煤炭工程,2012,44(1):92-95.
[2]张传宝,王海兵,陈建强.急倾斜煤层巷道变形特征及控制研究[J].煤炭工程,2017,49(8):171-174.
[3]陈仕仁,卓军.倾斜破碎顶板煤巷锚网索梯联合支护实践[J].中国科技纵横,2017(12):170-171.
[4]葛玉剑.急倾斜煤层巷道支护技术[J].煤,2011,20(7):84-86.
[5]张东升,文江,王旭峰,等.厚煤层大断面巷道锚网索喷支护技术研究与应用[J].煤炭工程,2015,47(1):37-39.
[6]李泽荃,赵红泽.急倾斜煤层巷道锚网支护技术研究与应用[J].煤炭工程,2016,48(5):50-52.
[7]常聚才,谢广祥,罗勇,等.急倾斜煤层全煤巷道锚网索支护参数设计[J].煤炭科学技术,2007,35(1):46-48.
[8]王永槐,杨吉文,韩书才.急倾斜煤层煤岩结合弱面巷道锚网支护快速掘进技术[J].煤矿开采,2008,13(1):51-53.
[2]张传宝,王海兵,陈建强.急倾斜煤层巷道变形特征及控制研究[J].煤炭工程,2017,49(8):171-174.
[3]陈仕仁,卓军.倾斜破碎顶板煤巷锚网索梯联合支护实践[J].中国科技纵横,2017(12):170-171.
[4]葛玉剑.急倾斜煤层巷道支护技术[J].煤,2011,20(7):84-86.
[5]张东升,文江,王旭峰,等.厚煤层大断面巷道锚网索喷支护技术研究与应用[J].煤炭工程,2015,47(1):37-39.
[6]李泽荃,赵红泽.急倾斜煤层巷道锚网支护技术研究与应用[J].煤炭工程,2016,48(5):50-52.
[7]常聚才,谢广祥,罗勇,等.急倾斜煤层全煤巷道锚网索支护参数设计[J].煤炭科学技术,2007,35(1):46-48.
[8]王永槐,杨吉文,韩书才.急倾斜煤层煤岩结合弱面巷道锚网支护快速掘进技术[J].煤矿开采,2008,13(1):51-53.