Home | About Journal  | Editorial Board  | Instruction | Subscription | Advertisement | Message Board  | Contact Us | 中文
MODERN TUNNELLING TECHNOLOGY 2019, Vol. 56 Issue (5) :150-156    DOI:
Current Issue | Next Issue | Archive | Adv Search << [an error occurred while processing this directive] | [an error occurred while processing this directive] >>
Numerical Analysis of Controlled Blasting Effect of the Spheroidal Weathered Granite Body in Shield Tunnelling
(1 Guangzhou Mass Transit Engineering Consultant Co., Ltd., Guangzhou 510010; 2 China University of Mining and Technology, Beijing 100083)
Download: PDF (3611KB)   HTML (1KB)   Export: BibTeX or EndNote (RIS)      Supporting Info
Abstract It is challenging for shield tunnel construction when spheroidal weathered granite body is encountered, and controlled blasting could be adopted as a pretreatment measure. In this paper a numerical simulation calculation was conducted by FEM ANSYS regarding controlled blasting of the spheroidal granite weathered body, the blast vibration and rock breaking effect were analyzed. The results show that the vibration velocity of the ground right above explosive is 0.35 cm/s after blast treatment, meeting the requirement of the specification of blast construction;good rock breaking effect is obtained for the spheroidal weathered granite body under the effect of blasting, and the max. size of the broken rock is 6.71 cm, meeting the mucking requirement for shield driving.
Service
Email this article
Add to my bookshelf
Add to citation manager
Email Alert
RSS
Articles by authors
ZHU Siran1 SUN Li2
Keywords： Shield tunnel   Granite   Speroidal weathered body   Controlled blasting   Numerical simulation     
Abstract： It is challenging for shield tunnel construction when spheroidal weathered granite body is encountered, and controlled blasting could be adopted as a pretreatment measure. In this paper a numerical simulation calculation was conducted by FEM ANSYS regarding controlled blasting of the spheroidal granite weathered body, the blast vibration and rock breaking effect were analyzed. The results show that the vibration velocity of the ground right above explosive is 0.35 cm/s after blast treatment, meeting the requirement of the specification of blast construction;good rock breaking effect is obtained for the spheroidal weathered granite body under the effect of blasting, and the max. size of the broken rock is 6.71 cm, meeting the mucking requirement for shield driving.
Keywords： Shield tunnel,   Granite,   Speroidal weathered body,   Controlled blasting,   Numerical simulation     
Cite this article:   
ZHU Siran1 SUN Li2 .Numerical Analysis of Controlled Blasting Effect of the Spheroidal Weathered Granite Body in Shield Tunnelling[J]  MODERN TUNNELLING TECHNOLOGY, 2019,V56(5): 150-156
URL:  
http://www.xdsdjs.com/EN/      或     http://www.xdsdjs.com/EN/Y2019/V56/I5/150
　
No references of article
[1] FAN Lei.Study on the Key Techniques for Comprehensive Control of Heat Harm of the Deep-buried and Super-long Tunnel with High Ground Temperature[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(6): 1-10
[2] GAO Juru1 ZHANG Bo1 WANG Yao1 QU Haobo1 YAO Zhijun2.Study on the Key Techniques for Improving Working Environment of the Extra-long Highway Tunnels in High Altitude Areas[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(6): 11-18
[3] LIU Xian1 LI Haitao1 GUAN Panfeng2 YANG Zhihao2.Research on Design Parameters for Shield Tunnel Lining Structure with Quick Connectors[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(6): 19-26
[4] LI Qiang1 GAN Penglu2,3 ZHONG Xiaochun4.Study on Effect of Backfilling Grouting Thickness on Anti-floating of the Shield Tunnel[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(6): 27-35
[5] LI Rongxin1 CHEN Huawei2 ZHOU Songyuan1 LIU Xinping1.Analysis on the Genesis of Gas in the Tunnel with Oil and Gas and Its Safety Management[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(6): 36-40
[6] TANG Bin.Research on the Distribution Characteristics and Migration Law of Shallow Natural Gas of Longquanshan Tunnel on Chengdu Metro[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(6): 41-46
[7] QIN Liang1 ZHANG Qingchao2.Physical Simulation of Tunnel Advance Geological Prediction by Transient Electromagnetic Method[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(6): 47-51
[8] ZHANG Minqing LI Shu LIU Juncheng.Research and Development of the Embedded Rubber Waterstops Reinforced with Horizontally Built-in Steel Plates[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(6): 52-56
[9] MA Shilong WU Mingying YAO Zhaoming.Study on Creep Test and Empirical Damage Model of Artificial Frozen Soils[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(6): 57-62
[10] MA Li1 LI Sheng2 WANG Qicai2 YU Bentian2 LIU Yapeng2 WANG Qingshi2.Study on Earth Pressure Difference Law of Load Relieving Structure of the Rectangular and Arched High-filled Loess Open Cut Tunnels[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(6): 63-69
[11] GUO Jian1,2 YANG Zhiguo1,2 KANG Fengxue3.Analysis of Deformation Stability Reliability of Tunnel Surrounding Rocks Based on Vector Projection Response Surface Method[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(6): 70-77
[12] LIU Mingcai.Study on Stability of the Support System with Anchor Bolts and Shotcrete under Overbreak and Underbreak Conditions[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(6): 78-84
[13] YU Jianxin1 LIU Huanchun2 WEI Haixia1 CHEN Chen2.On Mutual Dynamic Effect of Tunnel Blasting Construction Adjacent to Existing Tunnel[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(6): 85-92
[14] XIE Liguang1 YANG Qun2 SHENG Yong1 TANG Fujun1.Exploration on the Equilibrium Evaluation Model for the Health Status of Road Tunnels[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(6): 93-98
[15] SUN Haoxuan1 LI Peixian1 CUI Ximin1 YAO Dehua2 XIAO Wu3.Analysis of the Effect of Underground Coal Mining on the Bayueshan Tunnel[J]. MODERN TUNNELLING TECHNOLOGY, 2019,56(6): 99-106
Copyright 2010 by MODERN TUNNELLING TECHNOLOGY