Speedy Backfilling for Old Mines
In November 1992, the U.S. Bureau of Mines, in cooperation with the Office of Surface Mining (OSM), used two recently-developed pneumatic backfilling devices to completely fill an abandoned...
Haunted by the Past
Given the legacy of the construction of the Missouri Valley Water Tunnel in the 1920s�eight deaths and numerous injuries�it's no wonder that safety was foremost in the minds...
Two-Time Winner
After more than a century of service as a major U.S.-Canada rail link, the existing St. Clair River Tunnel between Port Huron, Mich. and Sarnia, Ontario is being replaced by a new tunnel...
More Than an Underground Success
Starting with the premise that reasonable people, guided by impartial experts they have selected, can come to a reasonable solution, dispute review boards, or DRBs, have amassed an enviable...
Designing Reinforced Rock
The reinforced rock arch design method has been used to stabilize coal mine excavations for 40 years, but so far has been applied to only a few tunnels. The use of rock reinforcement develops...
The Heartbeat of the Artery
One of the most ambitious infrastructure megaprojects in recent memory, Boston's $5 billion Central Artery runs the gamut of civil engineering disciplines. Design, highway,...
Motown Tunneling
When finished in 1993, Wayne County Michigan's $69 million wastewater treatment/sewer project will link outlying areas such as Dearborn with sewage treatment facilities in...
Experimental Photoelastic Analysis of Tunnels Containing Cracks
Due to the presence of cracks the strength of the structure is decreased in the present paper an experimental two dimensional photoelastic technique has been developed to analyze the circular...
A Novel University-Industry-Government Partnership
The Ohio Aerospace Institute (OAI) is a Consortium of nine universities in Ohio, the NASA Lewis Research Center (LeRC) in Cleveland, the Wright Laboratory (WL) at the Wright Patterson...
A Face-Lift for Lincoln
The 45-year-old Lincoln Tunnel is undergoing a sweeping rehab�from its ceiling on down to its roadway. Each of the three tubes (in the world's only three-tube underwater vehicular...
Excavation and Support for the Urban Infrastructure
This proceedings,
The Great Chicago Flood of 1992
In April of 1992, a breach in a freight tunnel caused the river that flows through Chicago to pour into city building basements, causing the city to shut down. Critical utility systems...
Tunnel Takes Cathodic Protection
Cathodic protection is nothing new for bridges and parking garages, but it has never been installed in a tunnel�until now. As part of a $15 million rehabilitation project, the method is...
The Caisson Solution
Detroit is expanding its wastewater treatment plant to drastically reduce combined sewer overflows. The expansion, however, is being done on an extremely congested 4 acre tract of land...
Mining for Building Expansion
Engineers adapted mining techniques to tunnel under a vibration sensitive manufacturing operation to create new working space below. IBM workers needed more working space at their Vermont...
Dynamic Wind Loads
This chapter is concerned with the motions of cable stayed bridges that arise as a result of wind action. The aerodynamic phenomena that must be considered are vortex shedding, torsional...
Wind Tunnel Modeling of Time-Dependent Drift Topography
The aeolian wind tunnel is a useful tool for investigating not only the saltation physics of wind-driven sand, soil or snow, but also for determining the time-dependent development of...
Earth Walls: Making the Right Choice
Earth walls are retaining walls where the ground assumes a load-bearing role. These walls either support compacted earth (embankment-type reinforced compacted earth walls such as Doublewal...
Dallas' Flood Caverns
Dallas' North Central Expressway floods during heavy rains, but the dense development that helps create excessive runoff also precludes large detention ponds. The high-quality,...
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...
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