某水工隧洞爆破震动对周边建筑物影响的试验分析  

Experimental Analysis of Influence of Blasting Vibration in a Hydraulic Tunnel on Surrounding Buildings

作　　者：乔雄[1,2] 陈建勋[1] 王梦恕[3] 王晓星 

机构地区：[1]长安大学公路学院,陕西西安710064 [2]兰州理工大学土木工程学院,甘肃兰州730050 [3]北京交通大学土木建筑工程学院,北京100044 [4]衢州市公路管理局,浙江衢州324000

出　　处：《地震工程学报》2016年第4期504-509,共6页China Earthquake Engineering Journal

基　　金：长江学者奖励计划项目(T2014214);国家自然科学基金项目(51278063);陕西省重点科技创新团队支持计划(2014KCT-29);陕西省交通厅建设科技项目(13-14K);交通运输部科技项目(2010 353 361 310)

摘　　要：隧道开挖时的爆破震动对周边建筑物安全影响很大,但目前对不同爆破参数、周边建筑的距离与爆破开挖之间关系的研究成果不多,实际工程中也难以把握。以宁夏固原市某水工隧道工程为依托,采用现场试验的方法,对地表关键位置质点爆破振动频率与振动速度进行测试和分析。结果表明：（1）经测试发现房屋主振频率在10~60Hz间,而一般房屋建筑的频率均小于10Hz,说明此次试验中爆破震动不能与房屋产生共振。（2）对试验数据进行分析,并依据爆破震动规范安全振速标准进行判别,发现此次试验中土坯房的安全距离为160 m,一般砖房为60 m。研究结果可为隧道爆破的设计与施工提供理论依据,为类似隧道的爆破工程及解决由爆破引起的纠纷提供借鉴。Buildings adjacent to a site are considerably influenced by blasting vibrations.However,limited research has been conducted in this respect.In this paper,therefore,a hydraulic tunnel project in Guyuan city,Ningxia province,is selected as the research site and particle blasting vibration frequency and vibration velocity are tested and analyzed using in-situ tests.Results show that the tested domain frequency of buildings is between 10~60 Hz,which is different from general housing construction with a 10 Hz domain frequency and thus shows that blasting vibrations do not cause resonance in the buildings tested.In addition,according to safe speed standards in blasting vibration specifications,a safe distance for adobe houses is 160 mand that of general brick houses is 60 m.These results provide a theoretical basis for tunnel blasting design and construction,and can also be used as a reference when resolving disputes caused by blasting in similar projects.

关 键 词：水工隧洞 爆破震动 爆破振速 现场测试 

分 类 号：U451[建筑科学—桥梁与隧道工程]