SOIL AND FOUNDATION INVESTIGATIONS OF THE PATAPSCO TUNNEL PROJECT

PROCEDURES FOLLOWED IN THE SOIL AND FOUNDATION STUDIES FOR THE CONSTRUCTION OF THE PATAPSCO TUNNEL PROJECT ARE DESCRIBED. AVAILABLE SOURCES OF DATA ON LOCAL SOILS AND GEOLOGY WERE INVESTIGATED. A FIELD STUDY WAS MADE, DURING WHICH TIME THE ENTIRE PROPOSED ALIGNMENT WAS COVERED ON FOOT, OBSERVATIONS MADE, AND SAMPLES RECOVERED FOR LABORATORY TESTING. THE PREDOMINANT SOIL TYPES ARE ERODED SEDIMENTS OF AN UNCONSOLIDATED NATURE. SURFACE SOIL SEDIMENTS ARE OF THE POTOMAC GROUP OF THE LOWER CRETACEOUS. THESE SEDIMENTS REST UPON CRYSTALLINE ROCK. GRAVEL AND CLAY DEPOSITS WHICH WERE STREAM TRANSPORTED FROM THE NORTHWEST DURING THE PERIODS OF GLACIAL ACTION ARE ENCOUNTERED. A MASTER SOIL PLAN AND PROFILE WERE PREPARED FOR EACH CONSTRUCTION SECTION BY THE DESIGN ENGINEER FOR THAT SECTION. THE IMPORTANCE OF REVISIONS IN CONSTRUCTION PLANS DUE TO FIELD OBSERVATIONS IS EMPHASIZED. THIS ASSURED A CONTINUOUS REEVALUATION OF THE SOIL AND FOUNDATION CONDITIONS AS WORK PROCEEDED. MAINTENANCE AND OPERATIONS ARE BRIEFLY DISCUSSED.

Media Info

  • Monograph Title: Landslide and foundation investigation and stability analysis
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00235316
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Aug 19 1994 12:00AM