00822717

Component

https://doi.org/10.3141/1772-04

http://scholar.google.com...ding&publication_year=2001

Two longwall coalmine panels were mined at a depth of approximately 156 m (520 ft) beneath I-70 east of Washington, Pennsylvania, such that the highway crossed the width of one panel at two locations. The Pennsylvania Department of Transportation (DOT) assumed responsibility for real-time monitoring of both ground deformation and changes in highway conditions. Innovative monitoring of ground deformation was accomplished with time domain reflectometry to interrogate coaxial cables installed in seven deep holes and an array of 32 tiltmeters along the highway shoulder. Surface monitoring was conducted with Global Positioning System measurements at more than 100 locations. Tiltmeters were connected to a central remote data acquisition system that automatically recorded and stored measurements. When specified tilt values were detected, the system initiated a phone call to key Pennsylvania DOT personnel, who then monitored tiltmeter measurements in real time via a phone-line connection. On the basis of this information, they could alert other agencies, if necessary, and intensify visual reconnaissance to determine if lane closures were necessary.

This paper appears in Transportation Research Record No. 1772, Soil Mechanics 2001.

English

p. 32-39

2001

Transportation Research Record

0309072360

Figures (7) ; Photos (3) ; References (10) ; Tables (3)

Automatic data collection systems; Coal mines; Coaxial cables; Global Positioning System; Interstate highways; Monitoring; Real time information; Remote sensing; Subsidence (Geology); Technological innovations; Time domain reflectometers

Alert systems; Tiltmeters

Washington (Pennsylvania)

Geotechnology; Highways; I42: Soil Mechanics

TRIS, TRB, ATRI

Jan 24 2002 12:00AM

• CLASS-A PREDICTION OF CONSTRUCTION DEFECTS IN DRILLED SHAFTS
• EFFECTS OF MINOR ANOMALIES ON AXIAL CAPACITY OF DRILLED SHAFTS
• ENGINEERING ANALYSIS OF DYNAMIC BEHAVIOR OF MICROPILE SYSTEMS
• ESTIMATING HIGHWAY EARTHWORK CROSS SECTIONS BY USING VECTOR AND PARAMETRIC REPRESENTATION
• EXAMINING THE EFFECTS OF REINFORCEMENT IN U.S. FOREST SERVICE DEEP-PATCH LANDSLIDE REPAIR TECHNIQUE: FULL-SCALE MODEL TESTS
• FAILURE OF GEOTEXTILE-REINFORCED VERTICAL SOIL WALLS WITH MARGINAL BACKFILL
• FIELD INSTALLATION OF AN EARTH PRESSURE CELL
• GEOCOMPOSITE CAPILLARY BARRIER DRAIN SYSTEM WITH FIBERGLASS TRANSPORT LAYER
• IN SITU MEASUREMENT AND EMPIRICAL MODELING OF BASE INFILTRATION IN HIGHWAY PAVEMENT SYSTEMS
• INSTALLATION SURVIVABILITY OF FLEXIBLE GEOGRIDS IN VARIOUS PAVEMENT SUBGRADE MATERIALS
• INSTRUMENTATION AND CONSTRUCTION PERFORMANCE MONITORING FOR I-15 RECONSTRUCTION PROJECT IN SALT LAKE CITY, UTAH
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• MODELING PAVEMENT SUBDRAINAGE SYSTEMS
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• PERFORMANCE OF GEOCOMPOSITE MEMBRANE AS PAVEMENT MOISTURE BARRIER
• QUALITY ASSURANCE PROCEDURE TO ASSESS MAINTENANCE ADEQUACY OF DRAINAGE ASSETS
• RATIONAL BASIS FOR EVALUATION AND DESIGN OF PAVEMENT DRAINAGE LAYERS
• REPEATABILITY AND RELIABILITY OF THE TUBE SUCTION TEST
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• STUDY OF SCALP-AND-REPLACE EQUATION IN COMPACTION SPECIFICATION FOR SOIL WITH HIGH GRAVEL CONTENT
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