空孔直眼掏槽成腔模型理论与实践分析

›› 2005, Vol. 26 ›› Issue (3): 479-483.

空孔直眼掏槽成腔模型理论与实践分析

林大能^1,2，陈寿如²

1.中南大学资源与安全工程学院，湖南长沙 410083；2.湖南科技大学能源与安全工程学院，湖南湘潭 411201

收稿日期:2003-12-10 出版日期:2005-03-10 发布日期:2013-11-21
作者简介:林大能，男，1972年生，博士生，副教授，从事岩土动力学与爆炸理论及其应用方面的研究。

Experimental and theoretical study of parallel hole cut blasting with cavity

LIN Da-neng^{1, 2}, CHEN Shou-ru²

1.School of Resource and Safety Engineering, Center South University, Changsha 410083, China; 2. School of Energy and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, China

Received:2003-12-10 Online:2005-03-10 Published:2013-11-21

摘要/Abstract

摘要： 空孔直眼掏槽是隧道或井巷掘进的主要方法之一。基于典型空孔掏槽炮眼布置，分析了掏槽眼爆破形成空腔的物理力学过程；建立了空腔形成的物理和力学模型；研究了腔内碎石在高压爆生气体作用下的抛射过程；得出了空腔尺寸的理论计算方法。槽腔岩石介质破碎和外端部漏斗形成取决于掏槽眼装药爆炸动作用；碎石的抛出率与炸药性质、岩石性质和爆破参数有关。理论分析与在某矿进行的48次试验结果有较好的吻合性。

关键词: 爆破动力学, 直眼掏槽, 槽腔模型, 实验分析

Abstract: The physical behavior of cut holes in the course of forming empty space was analyzed; and the mechanic model of empty space’s formation was established based on the typical borehole distribution in parallel cut blasting with cavity. The movement behavior of fragment pieces of rock in space was studied. The principle of the sizes of empty space resulted from cut blasting with cavity was put forward; and the related calculation method was given, of which the results coincide with the results of 48 trials in a coal mine. The research results show that the ratio of fragment pieces thrown out of space is relevant to the characteristic of explosive, parameters of rock and types of charge structure.

Key words: blasting dynamics, parallel cut, empty space, experimental analysis

中图分类号:

TD 236

林大能，陈寿如,. 空孔直眼掏槽成腔模型理论与实践分析[J]. , 2005, 26(3): 479-483.

LIN Da-neng , CHEN Shou-ru,. Experimental and theoretical study of parallel hole cut blasting with cavity[J]. , 2005, 26(3): 479-483.

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