scholarly journals Building 3D Model of Rock Quality Designation Assisted by Co-Operative Inversion of Seismic and Borehole Data

2018 ◽  
Vol 2018 (1) ◽  
pp. 1-5
Author(s):  
Duy Thong Kieu ◽  
Anton Kepic
Keyword(s):  
3D Model ◽  
Rock Quality Designation ◽  
Borehole Data ◽  
Rock Quality

Study of Ground Investigation Data along the Brunei Temburong Bridge Alignment

2021 ◽  
pp. qjegh2021-002
Author(s):  
Yogerej Visvanathan ◽  
Stefan Herwig Gödeke
Keyword(s):  
Cross Sections ◽  
Sedimentary Rocks ◽  
Geophysical Methods ◽  
Standard Penetration Test ◽  
Rock Quality Designation ◽  
Borehole Data ◽  
Rock Quality ◽  
Ground Investigation ◽  
Ground Conditions ◽  
Investigative Techniques

The Brunei Temburong Bridge (BTB) is an iconic project connecting Brunei Muara and Temburong districts in Brunei over a length of 30 km. The bridge crosses from Brunei Muara across Brunei Bay to Temburong. A key aim of the BTB project was the development of Temburong district, being prior the more isolated district, because of not having a direct land link to the other districts. This study reviews the geology of soil materials and sedimentary rocks along the bridge alignment based on 164 boreholes drilled for ground investigation. Standard Penetration Test, Rock Quality Designation and Fracture Index data were evaluated to interpret soil materials and sedimentary rocks along the alignment. Borehole data was used to generate lithological cross sections along the alignment providing an overview of geology. The geology encountered is extremely heterogenous, with low strength sediments encountered at depth of up to 80 m and more e.g., at the Temburong section. Rock quality designation vs. Fracture Index did not show a strong correlation likely due to the extreme heterogeneity in particular for the Brunei Bay and Temburong sections. The study demonstrates the importance of a closely spaced investigative drilling and sampling program for major construction programs which was successfully achieved for this project. Other investigative techniques such as geophysical methods could be highly useful for future projects. Considering economic and environmental reasons these techniques could be very useful to map the top of the bedrock even under highly heterogeneous ground conditions.

A Contribution to Relationship Between Volumetric Joint Count (Jv) and Rock Quality Designation (RQD) in Three-Dimensional (3-D) Space

2019 ◽  
Vol 53 (3) ◽  
pp. 1485-1494 ◽  
Author(s):  
Jun Zheng ◽  
Xiaohong Wang ◽  
Qing Lü ◽  
Jianfeng Liu ◽  
Jichao Guo ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Rock Quality Designation ◽  
Rock Quality

scholarly journals Engineering geological zoning of the Scorillo Dam site, Romania

2000 ◽  
Vol 22 ◽  
Author(s):  
Cristian Marunteanu ◽  
Ion Durdun
Keyword(s):  
Rock Mass ◽  
Modulus Of Elasticity ◽  
Grout Curtain ◽  
Rock Quality Designation ◽  
Rock Quality ◽  
Rock Mass Quality ◽  
Engineering Geological Zoning ◽  
Dam Site

A model of engineering geological classification and zoning of the Scorillo Dam site in Romania is proposed to optimise the design of the dam and of the grout curtain. The rock mass was classified into four categories: from 1 (good) to 4 (very poor), according to the rock mass quality (RMQ) at the dam site. Parameters available and used to determine the RMQ were lithology, degree of weathering and fragmentation, rock quality designation (RQD), and modulus of elasticity (E). Based on the study, a new design of the dam, its slopes, and the grout curtain was carried out.

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