Attenuation of rock blasting induced ground vibration in rock-soil interface  

作　　者：Bhagya Jayasinghe Zhiye Zhao Anthony Goh Teck Chee Hongyuan Zhou Yilin Gui 

机构地区：[1]School of Civil and Environmental Engineering,Nanyang Technological University,Singapore [2]Key Laboratory of Urban Security and Disaster Engineering of Ministry of Education,Beijing University of Technology,Beijing,China [3]School of Civil Engineering and Geosciences,Newcastle University,Newcastle upon Tyne,UK

出　　处：《Journal of Rock Mechanics and Geotechnical Engineering》2019年第4期770-778,共9页岩石力学与岩土工程学报（英文版）

基　　金：supported by the Land and Liveability National Innovation Challenge under L2 NIC Award No. L2NICCFP1-2013-1

摘　　要：Blasting has been widely used in mining and construction industries for rock breaking.This paper presents the results of a series of field tests conducted to investigate the ground wave propagation through mixed geological media.The tests were conducted at a site in the northwestern part of Singapore composed of residual soil and granitic rock.The field test aims to provide measurement data to better understand the stress wave propagation in soil/rock and along their interface.Triaxial accelerometers were used for the free field vibration monitoring.The measured results are presented and discussed,and empirical formulae for predicting peak particle velocity (PPV) attenuation along the ground surface and in soil/rock were derived from the measured data.Also,the ground vibration attenuation across the soil-rock interface was carefully examined,and it was found that the PPV of ground vibration was decreased by 37.2% when it travels from rock to soil in the vertical direction.Blasting has been widely used in mining and construction industries for rock breaking.This paper presents the results of a series of field tests conducted to investigate the ground wave propagation through mixed geological media.The tests were conducted at a site in the northwestern part of Singapore composed of residual soil and granitic rock.The field test aims to provide measurement data to better understand the stress wave propagation in soil/rock and along their interface.Triaxial accelerometers were used for the free field vibration monitoring.The measured results are presented and discussed,and empirical formulae for predicting peak particle velocity(PPV)attenuation along the ground surface and in soil/rock were derived from the measured data.Also,the ground vibration attenuation across the soil-rock interface was carefully examined,and it was found that the PPV of ground vibration was decreased by 37.2% when it travels from rock to soil in the vertical direction.

关 键 词：Rock BLASTING Field tests BLAST wave propagation PEAK particle velocity (PPV) Rock-soil INTERFACE 

分 类 号：O3[理学—力学]