Design, Selection, and Application of Disc Cutters in Hard and Abrasive Rock
Disc cutters have been used on tunnel boring and shaft boring machines for many years and are a proven method to bore hard rock. This paper will study the important parameters which effect...

Recent Development in the Design of Hard Rock Tunnel Boring Machines for the Mining Industry
Underground development for nuclear waste storage will possibly require tunnels to be excavated in a variety of rock conditions and configurations. Recent innovations in Tunnel Boring...

A Data Acquisition System for Defining Geologic Structure and Site Characterization

Mechanical Tunnel Excavation in Welded Tuff
The Technical Review Board for the United States high-level radioactive waste facility at Yucca Mountain has recommended maximum use of 'the most modern mechanical excavation...

Geophysical Borehole Logging in the Unsaturated Zone, Yucca Mountain, Nevada
Borehole geophysical logging for site characterization in the volcanic rocks at the proposed nuclear waste repository at Yucca Mountain, Nevada, requires data collection under rather unusual...

Measurement and Analysis of Hydraulic Conductivity Variability of a Heterogeneous Aquifer
The spatial variability of hydraulic conductivity of a shallow alluvial aquifer was investigated using borehole flowmeter measurements. The study was conducted at the site of a large-scale...

Emplacement Drift Temperature Reduction by Cooling Enhancement and Ventilation
The application of cooling enhancement in a short vertical container emplacement layout is analyzed. Two 25 m-long heat pipes upward oriented at 45 degrees are installed at each emplacement...

Mechanical Excavator Performance in Yucca Mountain Tuffs
A research effort of four phases is in progress at the Colorado School of Mines. The overall program will evaluate the cutability of welded tuff and other lithologies likely to be excavated...

Tales From Milwaukee's Underground
Written from RETC papers and interviews, this article is a status update on the Milwaukee Metropolitan Sewerage District's $2.1 billion Water Pollution Abatement program,...

Probabilistic Evaluation of the Performance of Axially Loaded Bored Piles
Probabilistic evaluation of single slender elastic elements, bored piles, in a multi-layered soil system without noticeable displacement of the soils are considered. The numerical analyses...

Transport of Injected Produced Water: A Sensitivity Study
This paper deals with the development and application of a model to assess potential environmental effects on Underground Sources of Drinking Water (USDW) due to the presence of an improperly...

Prediction of Pile Capacity

Drilled Shafts—A Database Approach
A database of 43 drilled shaft load tests of high quality has been developed to study parameters that affect the axial behavior of drilled shafts and methods of analysis to predict axial...

Load Tests on Bored Friction Piles in Clay
For the first time in Boston, Massachusetts, U.S.A., uncased bored friction piles in clay were used to support a six-story residential structure over a 60- to 75-foot (1.83 to 22.9 m)...

Adapting Tunneling to Rocks of the Sierra Nevada
Exploration programs were completed to select the most economical tunnel routes which are not only the shortest but are those which can be excavated by tunnel boring machines with the...

TBM Tunnel Friction Values for the Kerckhoff 2 Project
In the mid-1970's Pacific Gas and Electric Company began design of the Kerckhoff 2 Hydroelectric Project, which supplements the Kerckhoff 1 project built in 1919. The Kerckhoff...

Artificial Recharge and Water Supply in The Netherlands
In 1984 infiltration by surface spreading was 156 million m3, serving 15% of total supply of drinking water in the Netherlands. Already for some...

Residential Damage in an Area of Underground Coal Mining
In order to estimate the potential for future subsidence-related residential damage, a statistical analysis of past residential damage in the Boulder-Weld, Colorado, coal field was performed....

A Call for New Directions in Drilling and Sampling Monitoring Wells
The hollow-stem auger drilling technique has an inherent limitation of disturbing large volumes of subsurface materials around the borehole, thereby possibly affecting local permeabilities...

The Analysis of Laterally-Loaded Rock-Socketed Bored Test Piles

 

 

 

 

Return to search