摘要
为了探究采空区顶板冒落落地瞬间形成的空气冲击波流速和空气冲击波在巷道中的传播衰减规律,以赤峰中色白音诺尔矿业有限公司大型采空区为工程背景,利用相似模型,建立空气冲击波流速与采空区顶板高度H、采空区顶板暴露面积Se、采空区暴露面积Sk等参数之间的关系式,计算出采空区顶板围岩突然崩落时形成的空气流流速。当由此产生的空气冲击波在巷道中传播时,考虑在巷道中摩擦阻力和局部阻力的作用下,从理论上计算冲击波在巷道中传播时所受的阻力和传播距离,并探究空气冲击波在巷道中的传播衰减规律,为指导矿山正常生产、保障矿山的安全提供了依据。
In order to explore and research the flow of air shockwave formed by goaf roof suddenly falling to the land and its propagation in roadway, in the engineering background of large goal of Chifeng NFC Baiyinnuoer Mining Co., Ltd, this paper utilize a similar model and establish the function relation between the velocity of air current and goaf roof height H, the exposed area of goaf roof Se, the exposed area of goal Sk and other parameters and also calculate the velocity of air current formed by goal roof suddenly falling to the laud. In the addition, taking the effect of frictional resistance and local resistance in roadway into consideration, when the resulting air current propagate in the roadway, this paper theoretically calculate the resistance suffered by air current and the propagation distance of the air current and also research air shockwave＇s propagation attenuation law in roadway, which provides the basis for guiding the normal production of mine and ensuring the safety of mine.
出处
《科技与创新》
2014年第16期112-113,116,共3页
Science and Technology & Innovation
基金
江西省研究生创新专项资金项目(编号:YC2014-S350)
江西理工大学研究生创新专项资金项目(编号:YC2013-X02)
关键词
大型采空区
空气冲击波
顶板冒落
摩擦阻力
large mined-out region
air shock wave
roof caving
frictional resistance
