摘要
坚硬顶板具有来压步距大、强度大等特点,给顶板支架带来较大损坏,且会严重威胁工作面开采安全,顶板事故是井下采煤的四大事故之一,坚硬顶板最常用且最有效的处理方式为人工强制放顶。本文以杜儿坪矿13302工作面为实例,介绍了坚硬顶板危害和爆破卸压机理,然后利用数值模拟手段对爆破参数进行了优化,为顶板管理提供了参考经验。
The hard roof has the characteristics of large pressure step distance and high strength,which causes great damage to the roof support and seriously threatened the safe mining.The roof accident is one of the four major accidents of underground coal mining.The working face 13302 of Du＇erping mine was taken as an example,the damage of hard roof and the mechanism of blasting unloading pressure was introduced,the blasting parameters were optimized based on numerical simulation,providing reference for roof management.
作者
王华斌
Wang Huabin(Du＇erping Mine,Xishan Coal and Electricity Group,Taiyuan 030022,China)
出处
《煤炭与化工》
CAS
2018年第8期36-38,41,共4页
Coal and Chemical Industry
关键词
杜儿坪矿
人工强制放顶
坚硬顶板
来压步距
参数
Du＇ erping Mine
compulsory artificial caving
hard roof
stepping distance
parameter
