倾斜煤层柔模混凝土沿空护巷配套装备及施工工艺  

Matching Equipment and Construction Technology of Flexible Concrete Gob-side Roadway Protection in Inclined Coal Seam

作　　者：袁伟淇 卓军 沈蓥 YUAN Wei-qi;ZHUO Jun;SHEN Ying(Longmenxia South Coal Mine,Sichuan Huayingshan Coal Industry Co.,Ltd.,Guang′an 638020,China)

机构地区：[1]四川省华蓥山煤业股份有限公司龙门峡南煤矿,四川广安638020

出　　处：《煤炭技术》2020年第4期40-43,共4页Coal Technology

摘　　要：为了推进倾斜煤层安全高效沿空护巷技术,提高煤炭资源回采率,提出工作面推进前方巷道补强支护、顶板预裂爆破切顶、巷旁机械化柔模混凝土筑墙支护、采空区侧护巷支架挡矸组成的倾斜煤层沿空护巷联合支护方案,并通过井下工程实践对支护效果进行了验证。结果表明:补强支护可降低采面超前压力破坏巷道围岩,挡矸支架可有效隔离采空区为护巷留足安全空间,顶板预裂爆破切顶技术配合机械柔模注浆实现高效筑墙护巷,大幅提升了倾斜煤层机械化沿空留巷水平,降低了职工劳动强度,留巷效果显著。In order to promote the technology of safe and efficient gob-side roadway protection in inclined coal seam and improve the recovery rate of coal resources,a combined support scheme of gob-side roadway protection in inclined coal seam is proposed, which includes strengthening support in front of roadway,roof pre-splitting blasting roof cutting, mechanized soft-touch concrete wall support beside roadway,and gangue retaining support in side roadway of goaf. The supporting effect is verified by underground engineering practice. The results show that the reinforcement support can reduce the advance pressure of mining face and destroy the surrounding rock of roadway. The gangue retaining support can effectively isolate the goaf and leave enough safe space for roadway protection. The technology of roof pre-splitting blasting roof cutting combined with mechanical soft grouting can achieve high-efficiency wall protection,which greatly improves the level of mechanized gob-side roadway retaining in inclined coal seam,reduces the labor intensity of workers and has remarkable effect on roadway retaining.

关 键 词：倾斜煤层 柔模混凝土 沿空留巷 配套装备 施工工艺 

分 类 号：TD353[矿业工程—矿井建设]