Dissertation > Excellent graduate degree dissertation topics show

Applications and Researches of Transient Rayleigh Surface Wave Method in Xi’an Ground Fissures

Author: GaoZuoWen
Tutor: LiZhongSheng
School: Chang'an University
Course: Earth Exploration and Information Technology
Keywords: Xi'an ground fissures Rayleigh wave exploration Paleosol Dispersion curves
CLC: P631.4
Type: Master's thesis
Year: 2009
Downloads: 134
Quote: 0
Read: Download Dissertation

Abstract


Currently has 14 ground fissures in Xi'an, Xi'an ground fissures in Xi'an urban construction and economic development has had tremendous damage and obstruction. Xi'an ground fissures exploration and research, helps to identify the exact location of ground fissures, guide urban planning, to minimize losses caused by ground fissures. From 1887 Rayleigh first discovered the existence of Rayleigh waves since the Rayleigh wave method has become a new method is widely used in geotechnical and geological prospecting and other shallow areas, compared to the traditional method of seismic exploration and drilling method, Rayleigh wave has a convenient, fast, economical and accurate. Introduction This paper describes some of the major topics of the purpose, significance and so on. The second part of the main theoretical basis of Chapter elastic constants of the material to do a presentation and seismic wave dynamics starting from the Rayleigh surface wave generation and propagation and characteristics and so do the theoretical elaboration. The forward part of the third chapter introduces the algorithm and fast knoppof equivalent half-space and French forward method, Xi'an ground fissures actual research data, and establishing the actual Xi'an ground fissure formation model, and implement two methods differently fracture morphology forward calculation model. Chapter inversion part, introduced genetic algorithm and the equivalent half-space Combination inversion method, and use the forward model were compared and analyzed. Chapter V of field experiments, the use of Rayleigh wave method, on the tower in Xi'an Chang'an Pocun Qingliangshan f 14 fissure at the actual data collected by the actual data analysis and processing, obtained with the real formation anastomosis site results. This is the first method is applied to the Rayleigh wave exploration ground fissures in Xi'an by the research work, come to the following findings: 1. Rapid knoppof algorithm and the equivalent half-space method can accurately show the formation of positive dispersion curves, Fast knoppof algorithm compared to the equivalent half-space method is a significant advantage of fast calculation; Genetic Algorithm Combination with equivalent half-space inversion, inversion can get accurate results; 2. transient surface wave method can accurately paleosol stratigraphic inversion depth and thickness; utilization as a symbol of the ancient layers of the soil layer of ground fissures in Xi'an survey standards, Transient Rayleigh Wave drilling methods can be complementary or alternative methods to determine the location of ground fissures in Xi'an and occurrence ; 3 If appropriate inversion parameters related to the transient Rayleigh wave method gives accurate values ??of shear wave velocity for the in situ geotechnical testing and provide a reliable basis for dividing space.

Related Dissertations

  1. The Sediment and U-Pb Geochronology Features of Detrital Zircon in Luochuan Sequence and Its Provenance Study,P597.3
  2. Climate Change in Chongqing during the Holocene Reflected by Paleosol Profile in Fengjie County,P532
  3. Geochemistry Characteristics of Paleosol Microelement and REE in Liaoning,P595
  4. Garze Loess Strata and Its Implication to Paleoclimatic Change in the Western Sichuan,P532
  5. Physico-chemical Studies of the Holocene Palaeoflood Slackwater Deposits in the Qishuihe River Valley,P534.632
  6. Qishan Holocene Loess and Environmental Change,P532
  7. The Study of Digital Processing Technology in Transient Rayleigh Wave Exploration,P631.443
  8. Source of the Holocene Aeolian Loess-soil in the Upper Reaches of the Yinghe River,P531
  9. Research on Soil Parameters of Engineering Site by Rayleigh Wave Exploration,TU195
  10. Ultrasonic tomography method with the Rayleigh wave exploration explore its application in engineering,P631.42
  11. Eastern Guanzhong Basin Holocene environmental evolution and the impact on human culture,P534.632
  12. Study of Technology and Application of Roadbed Disease Exploration,U213.15
  13. Holocene Environmental Change of Pedogenensis and Sandstorm Activity in the Midwest Region of Guanzhong Plain,P531
  14. Pedological Characteristics of the Tianshui-Qin’an Miocene Deposit and Their Paleoenvironmental Signification,P531
  15. The Fluvio-lacustrine Landform Development and Environmental Change in the Sanmenxia Section of the Yellow River,P542
  16. PALEOCLIMATIC INFORMATION RECORDED BY MICROBES AND ORGANIC MATTER IN CHINESE LOESS ---STUDIES ON THE CONTRIBUTIONS TO THE MAGNETIC SUSCEPTIBILITY OF MAGNETOTACTIC BACTERIA AND THE CHARACTERISTIC BIOMARKERS,P532
  17. The Soil-forming Mode and Paleoclimatic Changes of Pengyang Loess Section,P467
  18. Shanxi Datong volcanic eruption age distribution of stage,P317.3
  19. Detection of complex roadbed Rayleigh dispersion curves of,P631.4
  20. Pattern Search Algorithms for Nonlinear Inversion of High-frequency Rayleigh Wave Dispersion Curves,P631.4

CLC: > Astronomy,Earth Sciences > Geology > Geology, mineral prospecting and exploration > Geophysical exploration > Seismic exploration
© 2012 www.DissertationTopic.Net  Mobile