Modal Analysis and Wavelet Transform in Evaluating Dam Vibration Response Caused by Blasting

Journal of Changjiang River Scientific Research Institute ›› 2012, Vol. 29 ›› Issue (4): 26-29.

• ENGINEERING SAFETY AND DISASTER PREVENTION • Previous Articles Next Articles

Modal Analysis and Wavelet Transform in Evaluating Dam Vibration Response Caused by Blasting

DENG Cheng-Fa^1,2, XU Chang³, GE Guo-Chang¹

1.Zhejiang Guangchuan Engineering Consultation Co., Ltd., Hangzhou 310020, China; 2.Zhejiang Institute of Hydraulics & Estuary, Hangzhou 310020, China; 3.Department of Municipal Engineering, Zhejiang Water Conservancy and Hydropower College, Hangzhou　　310018, China)

Received:2011-02-28 Published:2012-04-01 Online:2012-04-01

Abstract

Abstract: The safety assessment for blasting vibration of the tunnel excavation near a dam is presented. Spectral analysis is performed to obtain the vibration frequencies. Wavelet multi-resolution analysis is used to extract the vibration energy in different frequency bands, and the energy distribution is also discussed. 3-D finite element vibration modal analysis of the dam with empty or full reservoir is conducted. Considering the safety criterion including vibration frequency, energy, structural modal parameters, and peak values of vibration velocity, we find the dam is safe under the impact of blasting vibration. The result is also helpful for the safety assessment of blasting vibration for similar projects.

Key words: blasting vibration, wavelet, dam, modal analysis, safety criterion

CLC Number:

TU235.4

DENG Cheng-Fa, XU Chang, GE Guo-Chang. Modal Analysis and Wavelet Transform in Evaluating Dam Vibration Response Caused by Blasting[J]. Journal of Changjiang River Scientific Research Institute, 2012, 29(4): 26-29.

[1]	ZHU Xiao-wei, YUAN Zhan-liang, LI Hong-chao. A Method of Predicting Concrete Dam Deformation Based on BP-PCA-WCA-SVM [J]. Journal of Changjiang River Scientific Research Institute, 2024, 41(9): 138-145.
[2]	LIANG Rui, QI Fang-xia, ZHOU Wen-hai, LI Sheng-rong, LOU Xiao-ming. Blasting Characteristics of Eccentric Uncoupled Charges under Different Damage Models [J]. Journal of Changjiang River Scientific Research Institute, 2024, 41(9): 98-105.
[3]	HE Wei-ping, LIU Cong-yu, YUE Ming-kai, YAO Hui-qin. Influence of Bottom Pedestal on Failure Mode of Gravity Dam under Strong Earthquake [J]. Journal of Changjiang River Scientific Research Institute, 2024, 41(8): 150-156.
[4]	LI Zhi-bin, LIU Li-jiao, HUANG Shuai, DING Lin, LIU Yan-jie. Investigation on Carbonated Lime-Ash Solidified Frozen Soil and Damage Constitutive Model [J]. Journal of Changjiang River Scientific Research Institute, 2024, 41(7): 118-125.
[5]	ZHANG Dai-feng, CUI Dong-wen. Prediction of Daily Inflow Runoff of Three Gorges Reservoir Using Regularized Extreme Learning Machine Optimized by Three New Swarm Intelligent Algorithms [J]. Journal of Changjiang River Scientific Research Institute, 2024, 41(7): 16-24.
[6]	LI Hong-de, DONG Xiao-tao, LI Qiao-ling. Dynamic Simulation of Soil Moisture in the Near-Dam Area of Reservoir Based on HYDRUS-1D Model [J]. Journal of Changjiang River Scientific Research Institute, 2024, 41(7): 34-40.
[7]	TONG Guang-qin, GENG Jun, XU Hua-wei, LIU Ding-ming, QIN Wei-bing, MEI Xiao-long. Research and Design of Multi-service System Integration for Safety Monitoring of the Three Gorges Project [J]. Journal of Changjiang River Scientific Research Institute, 2024, 41(7): 182-189.
[8]	GAO Zhi-liang, TIAN Ling-yun, PANG Lei , CHU Chuan-qi. Seismic Dynamic Response Characteristics of Dagangshan High Arch Dam: Case Study on Luding Ms 6.8 Earthquake [J]. Journal of Changjiang River Scientific Research Institute, 2024, 41(6): 143-149.
[9]	LI Ju, CUI Dong-Wen. Monthly Runoff Prediction Using Hybrid Kernel Extreme Learning Machine Based on Data Decomposition and Zebra Algorithm Optimization [J]. Journal of Changjiang River Scientific Research Institute, 2024, 41(6): 42-50.
[10]	DUAN Wen-gang, HU Han, HOU Dong-mei. Evaluation of Flood Discharge Safety of Three Gorges Dam in Two Decades of Operation [J]. Journal of Changjiang River Scientific Research Institute, 2024, 41(6): 178-186.
[11]	WANG Jin-shui, CHEN Jian-gang, WANG Xi-an, LI Xiang-ning, XU Wen-jing. Investigation and Analysis of Upstream and Downstream Erosion and Sedimentation Characteristics of Check Dams in Small Watershed [J]. Journal of Changjiang River Scientific Research Institute, 2024, 41(5): 171-178.
[12]	CAO Fu-bo, HUANG Xu-tong, YANG Xiao-gang, LIANG Wei-guo, WU Ya-xuan, LI Ming-yuan, SU Tian, WANG Chen-xia. Frost Resistance of Recycled Aggregate Concrete Based on Compound Salt Solution Concentration [J]. Journal of Changjiang River Scientific Research Institute, 2024, 41(5): 187-194.
[13]	SI Han, HE Ying, XU Hui-min, LU Xiao-yue. Joint Probability Analysis of Extreme Flood Events in the Source Flow Area of Yarkant River [J]. Journal of Changjiang River Scientific Research Institute, 2024, 41(4): 46-54.
[14]	WANG Xing-chao. Causes of Accumulated Air and Tailwater Malfunctions in Rubber Dam and Design of a Pumping and Drainage System [J]. Journal of Changjiang River Scientific Research Institute, 2024, 41(4): 181-186.
[15]	LI Xin-ping, WANG Liang-jun, SONG Kai-wen, WANG Shen, HUANG Jun-hong, LIU Ting-ting. Dynamic Response Mechanism of Uniaxial Transient Unloading in Jointed Rock Mass [J]. Journal of Changjiang River Scientific Research Institute, 2024, 41(4): 95-103.

Modal Analysis and Wavelet Transform in Evaluating Dam Vibration Response Caused by Blasting

PDF

Knowledge

Abstract

Cite this article

share this article

Related Articles 15

Recommended Articles

Metrics

Comments