[1]彭泽森①,倪迪②,陶小钧②,等.隧道扩挖既有衬砌的爆破拆除[J].爆破器材,2019,48(06):48-54.[doi:10.3969/j.issn.1001-8352.2019.06.010]
　PENG Zesen,NI Di,TAO Xiaojun,et al.Blasting Demolition of Existing Lining in Tunnel Expansion Excavation[J].EXPLOSIVE MATERIALS,2019,48(06):48-54.[doi:10.3969/j.issn.1001-8352.2019.06.010]
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隧道扩挖既有衬砌的爆破拆除()
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《爆破器材》[ISSN:1001-8352/CN:32-1163/TJ]

卷:
48
期数:
2019年06
页码:
48-54
栏目:
爆破技术
出版日期:
2019-12-09

文章信息/Info

Title:
Blasting Demolition of Existing Lining in Tunnel Expansion Excavation
文章编号:
5376
作者:
彭泽森①; 倪迪②; 陶小钧②; 朱爱山③
①中国地质大学（武汉）（湖北武汉，430074）
②台州市交通投资集团有限公司（浙江台州，318000）
③浙江省隧道工程集团有限公司（浙江杭州，310005）
Author(s):
PENG Zesen①;  NI Di②;  TAO Xiaojun②; ZHU Aishan③
① China University of Geosciences (Wuhan) (Hubei Wuhan, 430074)
② Taizhou Communications Investment Group (Zhejiang Taizhou, 318000)
③ Zhejiang Tunnel Engineering Group (Zhejiang Hangzhou,310005)
关键词:
隧道工程; 方案比选; 爆破拆除; 振动速度; 数值模拟
Keywords:
tunnel engineering;  scheme comparison;  blasting demolition;  vibration velocity;  numerical simulation
分类号:
U457+.6
DOI:
10.3969/j.issn.1001-8352.2019.06.010
文献标志码:
A
摘要:
以浙江温岭楼山隧道扩挖工程为背景，采用ANSYS数值模拟软件对两种工法下隧道拱顶既有衬砌的爆破拆除方案进行对比，研究不同的爆破开挖方案对隧道周边岩土体及既有隧道产生的影响。其中，工法一对隧道I部分衬砌及上方I部分岩土体同时进行开挖；工法二则对上述两部分进行分部开挖。通过对两种工法下监测点的振动速度进行研究分析，并参考GB 6722—2014《爆破安全规程》，对比选出合适的爆破拆除方法。结果表明：两种工法左侧未开挖隧道的振动速度均低于安全标准；工法一的爆破振动速度相对较大，隧道右洞质点振动速度大于安全允许值；采用Matlab对右洞监测点的振动速度进行拟合，获得了爆破振动衰减规律。
Abstract:
Based on the project of expanding and digging Wenling Loushan Tunnel in Zhejiang, the blasting demolition schemes of existing lining of tunnel arch roof under two engineering options were compared by ANSYS numerical simulation software, and the influences of different blasting excavation schemes on surrounding rock and soil mass and existing tunnels were studied. In construction method 1, the lining of part I of the tunnel and the rock and soil mass of part I above the tunnel are excavated at the same time. In construction method 2, the above two parts are excavated by segments. Vibration velocity of monitoring points under the two construction methods were analyzed. According to Safty Regulations for Blasting (GB 6722—2014), it was concluded that blasting vibration velocities in the two construction methods meet the standard. Vibration velocity in construction method 1 is relatively large, and that of the particle point in the right hole of the tunnel using engineering method 1 is greater than the safety allowable value. Matlab was used to fit the vibration velocity of the monitoring point in the right hole, and the blasting vibration attenuation tendency was obtained.

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备注/Memo

备注/Memo:
收稿日期：2019-06-14
基金项目：浙江省交通运输厅科研计划项目（2018013）；国家自然科学基金（41672260）
第一作者：彭泽森（1995－），男，硕士研究生，主要从事爆破技术相关的研究。E-mail:1774783464@qq.com
更新日期/Last Update: 2019-12-04