[1]陈伟,马宏昊,沈兆武,等.壳体环向聚能致裂器的作用原理与应用研究[J].爆破器材,2015,44(03):27-30.[doi:10.3969/j.issn.1001-8352.2015.03.006]
　CHEN Wei,MA Honghao,SHEN Zhaowu,et al.Mechanism and Application Study of the Shell Annular Cumulative Cracking Device[J].EXPLOSIVE MATERIALS,2015,44(03):27-30.[doi:10.3969/j.issn.1001-8352.2015.03.006]
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壳体环向聚能致裂器的作用原理与应用研究()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
44
期数:
2015年03
页码:
27-30
栏目:
基础理论
出版日期:
2015-06-20

文章信息/Info

Title:
Mechanism and Application Study of the Shell Annular Cumulative Cracking Device
文章编号:
4885
作者:
陈伟; 马宏昊; 沈兆武; 王德宝
中国科学技术大学近代力学系（安徽合肥，230027）
Author(s):
CHEN Wei;  MA Honghao;  SHEN Zhaowu;  WANG Debao
Department of Modern Mechanics, University of Science and Technology of China (Anhui Hefei, 230027)
关键词:
掏槽爆破; 聚能致裂; 聚能环; 模型试验
Keywords:
cut blasting;  shaped fracturing;  shaped ring;  model experiment
分类号:
TD235
DOI:
10.3969/j.issn.1001-8352.2015.03.006
文献标志码:
A
摘要:
针对岩巷掘进等工程爆破中掏槽爆破效率低的问题，采用“先切后掏”的爆破技术，设计了一种壳体环向聚能致裂器。其结构特点是：直接利用弹壳材料作为聚能材料，在圆管形弹壳上设置多个聚能环，既减少装药量又能提高炸药能量利用率。装药起爆后，在轴向同时形成多排环向聚能射流，对周围岩石介质进行致裂，裂缝在爆生气体的径向准静态载荷作用下进一步扩展，形成交错的裂纹网。通过掏槽爆破模型试验对该致裂器的作用原理进行了验证，结果表明：掏槽爆破的炮孔利用率达到98%，能有效提高爆破效率和循环进尺，降低爆破成本。
Abstract:
Aiming at solving the low cut blasting efficiency in rock drifting, a shell annular cumulative cracking device was proposed based on the "cutting to slotting" technology. The shell materials were used to be shaped materials and multiple shaped rings were equipped on the circular tube. It could not only reduce charge quantity but also raise the utilization ratio of explosive energy. After explosion, the multiple annular shaped jet could be formed along the axial line simultaneously, resulting in the crack of the surrounding rock medium. The crack network would be further developed under the action of quasi static loading of detonation gas. This device was tested through the cut blasting model experiment. The results show that, with this device, the utilization ratio of blasting hole achieves 98%. The blasting efficiency and cyclical footage can be improved effectively and the cost of drifting can also be reduced.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期：2014-10-14
基金项目：国家自然科学基金重点项目(51134012)；国家自然科学基金面上项目(51174183, 51374189)
作者简介：陈伟（1988~），男，博士，主要从事现代爆炸技术与安全工程研究。 E-mail: chwei@mail.ustc.edu.cn
通信作者：马宏昊（1980~），男，博士，副教授，主要从事爆破器材与安全工程研究。E-mail: hhma@ustc.edu.cn
更新日期/Last Update: 2015-05-11