文献类型：期刊文献

英文题名：Research on Vibration Propagation Law and Dynamic Effect of Bench Blasting

作者：He, Lu Kong, Dezhong Lei, Zhen

第一作者：He, Lu

通信作者：Kong, DZ[1];Kong, DZ[2]

机构：[1]China Univ Min & Technol Beijing, Sch Energy & Min Engn, Beijing 100083, Peoples R China;[2]Guizhou Univ, Coll Min, Guiyang 550025, Peoples R China;[3]Guizhou Univ, State Key Lab Publ Big Data, Guiyang 550025, Peoples R China;[4]Guizhou Inst Technol, Sch Min Engn, Guiyang 550003, Peoples R China

第一机构：China Univ Min & Technol Beijing, Sch Energy & Min Engn, Beijing 100083, Peoples R China

通信机构：corresponding author), Guizhou Univ, Coll Min, Guiyang 550025, Peoples R China;corresponding author), Guizhou Univ, State Key Lab Publ Big Data, Guiyang 550025, Peoples R China.

年份：2022

卷号：10

期号：16

外文期刊名：MATHEMATICS

收录：;Scopus(收录号：2-s2.0-85137394185);WOS:【SCI-EXPANDED(收录号:WOS:000845441100001)】；

基金：This research was funded by the National Natural Science Foundation of China (No. 52164002, 52164005, 52064005 and 51904082); and the New Engineering Research and Practice Project (E-KYDZCH20201822).

语种：英文

外文关键词：beach blasting; field monitoring; numerical simulation; propagation law; dynamic effect

摘要：To address the problem of damage to adjacent buildings (structures) caused by bench blasting construction, blasting in a sand and gravel mine in Guizhou Province was used as the background. Through on-site monitoring and numerical simulation, the blasting vibration propagation law and dynamic effect characteristics under the joint action of different bench heights and horizontal distances were studied. The regression model was established. The results show that: the peak vibration speed in all three directions with the increase in the horizontal distance of the burst center is a decaying trend, and the field measurements are basically consistent with the safe vibration speed and do not exceed 1.5 cm/s, so the house is in a safe state; shear stress with the increase in the horizontal distance of the burst center strictly decays, so the source of the shear stress and vibration speed decay faster in the near zone, with the slow decay in the far zone; analysis found that the shear stress and vibration speed are quadratic and exponential. Through the analysis of the regression model, it is obtained that there is no co-linearity among the influencing factors, which has a significant effect on the regression equation and regression coefficient, and so the multiple linear regression equation fits well. The model can predict the blast vibration intensity, which can be used as a safety criterion for buildings under the action of blasting, and provides a reference for blast vibration control, hole network parameters, and the design index.