State of the Art Review of R&D on the Blast Vibration at KIGAM
Explosive blasting is very useful tool used for breaking rock in mining,quarrying and civil engineering constructions.However,the use of explosives always produces undesirable environmental impact due to the ground vibration,air-overpressure and flyrocks.Blast vibration may cause damage to adjacent structures,and has been a serious environmental issue.A series of R&D works on the blasting area have been done at Korea Institute of Geoscience & Mineral Resources(KIGAM) for past 20 years.A new method was developed to predict the ground vibration for the evaluation of safety of blast design in its relation to the generation of ground motion.It is based on the non-parametric source identification method,and provides the information on the history of ground motion as well as peak level of vibration.Parameter study was performed on time-domain using some commercial software like LS-DYNA,MIDAS,etc.Sensitivity analysis was carried out to set up the guidelines for the preparation of the basic input parameters in numerical modeling of blasting problems.In order to establish the National Standard for safe blasting work,allowable ground vibration level was suggested.Extensive field measurements have been done at various mining and construction sites to investigate the characteristics of blast-induced ground motion and structural response.In order to control the ground vibration more effectively,a new fracturing device was developed,which is applicable to the site where ground vibration has come to the front.Software for blast design was developed too.This paper summarizes the results of what have been done at KIGAM,including some current R&D work.
blast vibration prediction safe criterion structural response R&D work
Chang-Ha Ryu Byung-Hee Choi Hyung-Su Jang Myoung-Soo Kang
Geologic Environment Division,Korea Institute of Geoscience & Mineral Resources (KIGAM) 124 Gwahang-no,Yuseong-gu,Daejeon 305-350,Korea
国际会议
The 4th Asian-Pacific Symposium on Blasting Techniques(第四届亚洲太平洋地区爆破技术研讨会)
深圳
英文
393-398
2014-11-01（万方平台首次上网日期，不代表论文的发表时间）