[1]费鸿禄,苏强,蒋安俊,等.爆破载荷下隧道围岩破坏裂隙范围研究[J].爆破器材,2019,48(02):51-56.[doi:10.3969/j.issn.1001-8352.2019.02.010]
 FEI Honglu,SU Qiang,JIANG Anjun,et al.Damage Fracture Range of Tunnel Surrounding Rock under Blasting Load[J].EXPLOSIVE MATERIALS,2019,48(02):51-56.[doi:10.3969/j.issn.1001-8352.2019.02.010]
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爆破载荷下隧道围岩破坏裂隙范围研究()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
48
期数:
2019年02
页码:
51-56
栏目:
爆破技术
出版日期:
2019-04-02

文章信息/Info

Title:
Damage Fracture Range of Tunnel Surrounding Rock under Blasting Load
文章编号:
5300
作者:
费鸿禄苏强蒋安俊洪陈超
辽宁工程技术大学爆破技术研究院(辽宁阜新,123000)
Author(s):
FEI Honglu SU Qiang JIANG Anjun HONG Chenchao
Blasting Technology Research Institute, Liaoning Technical University (Liaoning Fuxin, 123000)
关键词:
爆破载荷冲击波应力波爆生气体裂隙范围
Keywords:
blasting load shock wave stress waves explosion gas fracture range
分类号:
TD235
DOI:
10.3969/j.issn.1001-8352.2019.02.010
文献标志码:
A
摘要:
为确定爆破载荷作用下岩体的裂隙范围,应用摩尔-库伦强度准则确定岩石在冲击波作用下的粉碎区;在考虑粉碎区范围、应力波衰减指数改变和岩石三向受力状态的情况下,用Mises强度准则计算裂隙区范围;在不考虑爆生气体在应力波形成的裂隙区损失的前提下,用岩石的断裂韧性来计算爆生气体充满粉碎区后岩石裂隙的二次扩展范围。通过理论计算与现场声波实测值对比,理论计算值比实测值小8.45%。分析表明,该裂隙范围计算方法合理,并可以对类似工况的裂隙范围进行估算。
Abstract:
In order to determine the fracture scope of rock mass under blasting load, Mohr-Coulomb strength crite-rion was used to determine the rock crushing zone under shock wave action. Fracture zone was calculated by Mises strength criterion considering crushing zone, change of stress wave attenuation exponent and three-dimensional stress state of rock. The two expansion range of rock fissure after blasting gas was calculated by using the fracture toughness of rock without considering the loss of explosive gas in the fracture zone formed by the stress wave. By comparing theoretical calculation with measured acoustic wave data at the scene, the former is smaller than the latter 8.45%. Analysis shows that the method for calculating the fissure area is reasonable and can estimate the fracture scope in similar working conditions.

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备注/Memo

备注/Memo:
收稿日期:2018-09-27
第一作者:费鸿禄(1963-),男,博士,教授,博导,主要从事工程爆破、地下工程教学和科研工作。E-mail:feihonglu@163.com
通信作者:苏强(1992-),男,硕士,主要从事岩土工程爆破工程方面的研究。E-mail:41810186@qq.com
更新日期/Last Update: 2019-04-02