00158165

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http://onlinepubs.trb.org...s/trr/1976/612/612-001.pdf

https://scholar.google.co...wers&publication_year=1976

Subsidence from underground defects is an increasing problem, and effective preventive or corrective measures depend on knowing the mechanism causing the failure. Too often, however, the mechanism is ignored or diagnosed from the appearance of the ground surface, leading to routine indiscriminate treatment such as filling the depression or draining any water, which can be successful, ineffective, or harmful, depending on the mechanism involved. A number of types of openings are involved: open excavtions, leaking sewers and culverts, solution channels in limestones, enlarged joints, faults, mines, tunnels, porous lava, erosion caves, voids between boulders, and voids between large debris. The mechanisms responsible include stratum thinning (including consolidation, collapse, or plastic flow), chemical and biochenical action (including burning), lateral strain, loss of lateral support, collpase of an opening, and reveling or erosion. Various combinations of opening and mechanisms can produce similar effects, but the necessary corrective measures are often different. Moreover, subsidences due to other resemble those from openings. This paper briefly discusses these to show their similarities and differences. /Author/

Publication of this paper sponsored by Committee on Engineering Geology. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01411464

pp 2-8

1976

Transportation Research Record

0309025885

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Figures (5) ; References (8)

Collapsible soils; Culverts; Erosion; Excavations; Mines; Openings; Plastic flow; Sewers; Soils; Subsidence (Geology); Tunnels; Underground structures; Void ratios

Lateral stress

Bridges and other structures; Geotechnology; Highways

TRIS, TRB

Sep 28 1977 12:00AM

• DESIGNATIONS OF EXCAVATION CHARACTERISTICS FOR MATERIALS IDENTIFIED IN FIELD INVESTIGATIONS
• EVALUATION OF FREEZE-THAW DURABILITY OF STABILIZED MATERIALS
• GEOLOGIC INDICATORS OF CATASTROPHIC COLLAPSE IN KARST TERRAIN IN MISSOURI
• GROUND SUBSIDENCE ASSOCIATED WITH DEWATERING OF A DEPRESSED HIGHWAY SECTION
• INDUCED AND NATURAL SINKHOLES IN ALABAMA--A CONTINUING PROBLEM ALONG HIGHWAY CORRIDORS
• INSULATED ROAD STUDY
• MATHEMATICAL MODEL FOR PREDICTING MOISTURE MOVEMENT IN PAVEMENT SYSTEMS
• PORE STRUCTURES OF SELECTED HAWAIIAN SOILS
• SUBSIDENCE CONTROL FOR STRUCTURES ABOVE ABANDONED COAL MINES
• SUBSURFACE CAVITY DETECTION: FIELD EVALUATION OF RADAR, GRAVITY, AND EARTH RESISTIVITY METHODS
• UNSATURATED TRANSIENT AND STEADY-STATE FLOW OF MOISTURE IN SUBGRADE SOIL