基于EEMD的爆破振动能量安全分析  

Safety analysis of EEMD-based blasting vibration energy

作　　者：饶运章[1,2] 王柳[1] 邵亚建 

机构地区：[1]江西理工大学资源与环境工程学院,赣州341000 [2]江西理工大学江西省矿业工程重点实验室,赣州341000

出　　处：《科技导报》2015年第4期61-65,共5页Science & Technology Review

基　　金：国家自然科学基金项目(51364010)

摘　　要：针对爆破振动安全标准的缺陷和小波折合能量法存在基函数、分解尺度选择的问题,基于集成经验模式分解(EEMD)技术,提出爆破振动折合能量安全评判新方法。对爆破振动波进行EEMD分解,识别造成破坏的优势IMF分量,求取其能量和频率,并结合构筑物固有频率进行折合能量计算,以此进行安全评判。基于某矿实测爆破振动数据,计算各信号的折合能量,综合现场破坏情况,得出该矿爆破振动波折合能量安全阈值为1.0×10-7J。A new appraisal method for safety of blasting vibration equivalent energy based on EEMD technology is proposed to deal with the safety criterion defects for blasting vibration and choice-making dilemma of mother wavelet and decomposition scales of wavelet packets equivalent energy. To begin with, the blasting vibration wave is EEMD- decomposed and the principal IMF components causing damage is identified. Then, the energy and frequency of principal IMF components are calculated, as well as equivalent energy computation considering the natural frequency of compounds for safety appraisal is conducted. It is deduced that the safety threshold of blasting vibration equivalent energy in the mine is 1.0×10-7J, based on collected blasting vibration field data,calculated equivalent energy of signals, and situation of on-site destruction.

关 键 词：爆破振动 集成经验模式分解 折合能量 优势分量 安全阈值 

分 类 号：TD235.1[矿业工程—矿井建设]