[1]王杰①②,张云鹏①②,葛晓东①②,等.液态CO2相变破岩参数及数值模拟研究[J].爆破器材,2022,51(04):16-22.[doi:10.3969/j.issn.1001-8352.2022.04.003]
　WANG Jie,ZHANG Yunpeng,GE Xiaodong,et al.Study on Rock Breaking Parameters and Numerical Simulation of Phase Transition of Liquid CO2 [J].EXPLOSIVE MATERIALS,2022,51(04):16-22.[doi:10.3969/j.issn.1001-8352.2022.04.003]
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液态CO2相变破岩参数及数值模拟研究()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
51
期数:
2022年04
页码:
16-22
栏目:
基础理论
出版日期:
2022-07-08

文章信息/Info

Title:
Study on Rock Breaking Parameters and Numerical Simulation of Phase Transition of Liquid CO2
文章编号:
5683
作者:
王杰①②; 张云鹏①②; 葛晓东①②; 周敏①②
①华北理工大学矿业工程学院（河北唐山,063000）
②华北理工大学河北省矿业开发与安全技术重点实验室（河北唐山,063000）
Author(s):
WANG Jie①②;  ZHANG Yunpeng①②;  GE Xiaodong①②;  ZHOU Min①②
①College of Mining Engineering, North China University of Science and Technology (Hebei Tangshan, 063000)
②Key Laboratory of Mine Development and Safety Technology of Hebei Province, North China University of Science and Technology (Hebei Tangshan, 063000)
关键词:
CO2致裂; TNT当量; 爆炸压力; 数值模拟
Keywords:
CO2 induced cracking;  TNT equivalent;  explosion pressure;  numerical simulation
分类号:
TD235
DOI:
10.3969/j.issn.1001-8352.2022.04.003
文献标志码:
A
摘要:
为更好地了解液态CO2相变破岩技术，对液态CO2相变的相关参数进行了研究。并通过调节装药不耦合系数，对传统数值模拟方法进行优化，确定了用于施工现场的布孔方式。结果表明：所采用的CO2相变致裂器的TNT当量为0.29 kg，乳化炸药当量为0.41 kg；其作用于孔壁上的爆轰压力为1 200 MPa，仅为乳化炸药爆轰压力的7.8%；爆容为509 L/kg，约为乳化炸药爆容的50%；破岩范围半径约为1.75 m。提出了用于工程现场的致裂方案，取得了良好的破岩效果。
Abstract:
In order to better understand the liquid CO2 phase change fracturing technology, relevant parameters of liquid CO2 phase change were studied. By adjusting the charge uncoupling factor, the traditional numerical simulation method was optimized to determine the hole placement method for the construction site. Results show that the CO2 phase change fracture device used in this test has a TNT explosive equivalent of 0.29 kg and an emulsion explosive equivalent of 0.41 kg. Blast pressure on the hole wall is 1 200 MPa, which is only 7.8% of the blast pressure of emulsion explosives. Blast capacity is 509 L/kg, which is about 50% of the blast capacity of emulsion explosives. Radius of rock breaking range is about 1.75 m. A fracturing scheme was proposed for the project site, which achieved good rock breaking results.

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备注/Memo

备注/Memo:
收稿日期：2021-11-27
基金项目：河北省自然科学基金（E2016209388）
第一作者：王杰（1995-），男，硕士研究生，主要从事爆破领域的研究。E-mail：2902299640@qq.com
通信作者：张云鹏（1962-），男，教授，博导，主要从事矿业工程、安全工程、爆炸领域的研究。E-mail：276158733@qq.com
更新日期/Last Update: 2022-07-05