Case study of geotechnical engineering investigation under complex geological conditions

2020 ◽  
Vol 2 (1) ◽  
pp. 26-31
Author(s):  
Yin Xiaolei
Keyword(s):  
Geotechnical Engineering ◽  
Geological Conditions ◽  
Engineering Investigation

scholarly journals Exploration of Geotechnical Engineering Investigation under Complex Topographical and Geological Conditions

2019 ◽  
Vol 2 (4) ◽  
pp. 20
Author(s):  
Yan Gao ◽  
Guihe Liang ◽  
Yanyong Zhou
Keyword(s):  
Water Supply ◽  
Inner Mongolia ◽  
Geotechnical Engineering ◽  
Tube Wells ◽  
Geological Conditions ◽  
Engineering Investigation ◽  
Supply Tube

This paper will explore the geotechnical engineering investigation technology under the complex topographical and geological conditions, and introduce how to construct the water supply tube wells faster and better under the complex topographical and geological conditions by taking Inner Mongolia as an example, so as to provide reference for the relevant professionals

scholarly journals Forensic Engineering Investigation Of Pyrites Expansive Forces And Impact On Long-Term Building Failure

2008 ◽  
Vol 25 (2) ◽  
Author(s):  
Paul G. Carr
Keyword(s):  
Engineering Geology ◽  
Geotechnical Engineering ◽  
Pyrite Oxidation ◽  
Foundation Design ◽  
Highway Engineering ◽  
Forensic Engineering ◽  
Engineering Investigation

There Is A Dearth Of Information Available In The Literature And Published Engineering Texts Addressing The Impacts Of Pyrite Expansion In Buildings (Mitchell And Soga 2005). The Texts Have Largely Been Silent, And The Intersection Of Engineering Geology, Geotechnical Engineering And Foundation Design Has Been Lacking, With The Exception Of Limited Investigations Related To Highway Engineering. Typically Pyrite Has Been Associated With Shale Materials When Used As Fill. Granite, As Well As Other Rocks And Soil Can Also Contain Sufficient Pyrite To Initiate The Destructive Forces Associated With Pyrite Oxidation. In This Case Study Paper, The Insidious And Destructive Forces Of Pyrite Expansion Are Presented. The Long-Term Implications And Strategies For Remediation Are Considered.

scholarly journals Comparison between electrical resistivity tomography and tunnel seismic prediction 303 methods for detecting the water zone ahead of the tunnel face: A case study

2020 ◽  
Vol 12 (1) ◽  
pp. 1094-1104
Author(s):  
Nima Dastanboo ◽  
Xiao-Qing Li ◽  
Hamed Gharibdoost
Keyword(s):  
Electrical Resistivity ◽  
Electrical Resistivity Tomography ◽  
Geological Structure ◽  
Rock Properties ◽  
Electrical Tomography ◽  
Tunnel Face ◽  
Resistivity Tomography ◽  
Geological Conditions ◽  
Seismic Prediction

AbstractIn deep tunnels with hydro-geological conditions, it is paramount to investigate the geological structure of the region before excavating a tunnel; otherwise, unanticipated accidents may cause serious damage and delay the project. The purpose of this study is to investigate the geological properties ahead of a tunnel face using electrical resistivity tomography (ERT) and tunnel seismic prediction (TSP) methods. During construction of the Nosoud Tunnel located in western Iran, ERT and TSP 303 methods were employed to predict geological conditions ahead of the tunnel face. In this article, the results of applying these methods are discussed. In this case, we have compared the results of the ERT method with those of the TSP 303 method. This work utilizes seismic methods and electrical tomography as two geophysical techniques are able to detect rock properties ahead of a tunnel face. This study shows that although the results of these two methods are in good agreement with each other, the results of TSP 303 are more accurate and higher quality. Also, we believe that using another geophysical method, in addition to TSP 303, could be helpful in making decisions in support of excavation, especially in complicated geological conditions.

The Distribution Regularity of Geohazard in the Dry-Hot Valley of Jinsha River: Case Study in Derong County

2012 ◽  
Vol 518-523 ◽  
pp. 5754-5759
Author(s):  
Dong Jian Xue ◽  
Zheng Wei He ◽  
Xiang Dong Zheng
Keyword(s):  
Economic Development ◽  
Tectonic Activity ◽  
Human Engineering ◽  
Monsoon Climate ◽  
Jinsha River ◽  
Physical Weathering ◽  
Geological Conditions ◽  
Vertical Zone ◽  
Landslide Debris

Derong County is located in Ganzi Tibetan Autonomous Prefecture in southern part of Sichuan Province, in the upper of the Jinsha River, where there is a subtropical plateau monsoon climate, abundant sunshine, and large amount of evaporation, so it is a typical dry-hot valleys region. Derong County is the area of more ups and downs in the terrain, deep valleys, steep mountains, complex geological conditions, intense tectonic activity, various climate types, and has obvious vertical zone effect by temperature, serious physical weathering of rock, and landslide, debris flow, collapse and other geohazards are easily induced under the influence of rainfall and human engineering activities. These geohazards have brought serious harm to the people's lives and property, and have a great impact on the socio-economic development. Through the analysis of geohazards in the study area to investigate its distribution and development trends, this paper provide a basis for geohazard prevention and economic development.

Distribution of ground-motion intensity inferred from questionnaire survey, earthquake recordings, and microtremor measurements—A case study in Christchurch, New Zealand, during the 1994 arthurs pass earthquake

1997 ◽  
Vol 87 (2) ◽  
pp. 356-369
Author(s):  
Takumi Toshinawa ◽  
J. John Taber ◽  
John B. Berrill
Keyword(s):  
New Zealand ◽  
Ground Motion ◽  
Intensity Data ◽  
Amplification Factors ◽  
Areal Distribution ◽  
Local Site ◽  
Geological Conditions ◽  
The City ◽  
Microtremor Measurements

Abstract The areal distribution of seismic ground-motion intensity in the city of Christchurch, New Zealand, during the 1994 Arthurs Pass Earthquake (ML 6.6) was evaluated using an intensity questionnaire together with local site amplifications inferred from seismic recordings and microtremors. In order to estimate the intensity in parts of the city where no intensity data were available, intensity data were compared to relative levels of shaking determined from both weak-motion and microtremor recordings. Weak ground-motion amplification factors were determined using ratios of ground accelerations at five sediment sites with respect to a rock site. Microtremor amplification factors were determined from horizontal-to-vertical spectral ratios at a 1-km spacing throughout the city. A positive correlation between weak-motion and microtremor amplification factors allowed extrapolation of microtremor amplification to estimated MM intensity (EMMI). EMMI ranged from 3 to 6 and was consistent with the questionnaire intensity and geological conditions and showed detailed information on the areal distribution of ground-motion intensity in the city.

Numerical modeling of an umbrella arch as a pre-support system in difficult geological conditions: a case study

2015 ◽  
Vol 75 (1) ◽  
pp. 211-221 ◽  
Author(s):  
Ayub Elyasi ◽  
Mohammad Javadi ◽  
Taher Moradi ◽  
Javad Moharrami ◽  
Saeid Parnian ◽  
...  
Keyword(s):  
Numerical Modeling ◽  
Support System ◽  
Geological Conditions ◽  
Umbrella Arch
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