UNT Libraries Government Documents Department - 55 Matching Results

Search Results

Results: 1 - 24 next
open access

Engineering Geology and Geomorphology of Streambank Erosion, Report 3: The Application of Waterborne Geophysical Techniques in Fluvial Environments

Description: Partial abstract: "The development of waterborne geophysical systems and techniques has provided the geotechnical community with an array of data acquisition tools that can be applied to the fluvial environment. The major purpose of the study described in this report is to evaluate the performance, application, and capability of selected waterborne acoustic profiling systems for streambank erosion studies in fluvial environments. Additional objectives of the study reported herin were to prese… more
Date: February 1982
Creator: May, John R.
Item Type: Refine your search to only Report
open access

Cavity Detection and Delineation Research, Report 1: Microgravimetric and Magnetic Surveys: Medford Cave Site, Florida

Description: Partial abstract: "This report reviews the scope of a research effort initiated in 1974 at the U.S. Army Engineer Waterways Experiment Station with the objectives of (a) assessing the state of the art in geophysical cavity detection and delineation methodology and (b) developing new methods and improving or adapting old methods for application to cavity detection and delineation." This report discusses the geography, topography, site drilling tests, magnetic and microgravimetric surveys, and o… more
Date: March 1983
Creator: Butler, Dwain K.
Item Type: Refine your search to only Report
open access

Monolith Joint Repairs: Case Histories

Description: This report discusses a study to identify materials and techniques to repair monolith joints, a common location for deficiencies in dams and locks. It also identified areas for further investigation to supplement existing technologies.
Date: August 1989
Creator: May, James G. & McDonald, James E.
Item Type: Refine your search to only Report
open access

Repair of Waterstop Failures: Case Histories

Description: This report discusses case studies of failures in waterstops that prevent water passage through the monolith joints of concrete dams and locks. "The primary objective of this study was to identify materials and techniques which have been used in repair of waterstop failures. Also, based on a review and evaluation of current practices, a secondary objective was to identify those areas where research is needed to supplement existing technology" (abstract).
Date: November 1986
Creator: McDonald, J. E.
Item Type: Refine your search to only Report
open access

State-of-the-Art for Assessing Earthquake Hazards in the United States: Report 19, The Evidence for Reservoir-Induced Macroearthquakes

Description: Partial abstract: "The published evidence of reservoir-induced macroearthquakes is critically reviewed. The evidence is partitioned into three types: (a) evidence of a post-impoundment increase in seismicity, (b) correlation evidence that is composed of a plot of a reservoir variable and a seismicity variable and, in most cases, an auxiliary variable, time, and (c) evidence based on the slope of the magnitude-frequency relationship (b value evidence)."
Date: June 1982
Creator: Meade, Ronald B.
Item Type: Refine your search to only Report
open access

Isabella Dam Spillway, Kern River, California: Hydraulic Model Investigation

Description: Abstract: "Tests were conducted on a 1:50-scale model of Isabella Dam Spillway to determine the adequacy of proposed spillway, dam, and channel improvements. The model reproduced an area of the reservoir 800 ft wide by 1,100 ft long, the spillway, and the entire length of the exit channel. Unsatisfactory flow conditions were observed in the vicinity of the spillway crest due to approach conditions to the spillway. Large cross waves, present in the exit channel just downstream of the spillway, r… more
Date: August 1987
Creator: Davis, W. G.
Item Type: Refine your search to only Report
open access

Retrogressive Failures in Sand Deposits of the Mississippi River, Report 2: Empirical Evidence in Support of the Hypothesized Failure Mechanism and Development of the Levee Safety Flow Slide Monitoring System

Description: This report represents a continuation of efforts by the Lower Mississippi Valley Division (LMVD), US Army Corps of Engineers, to develop an effective plan for and means of protecting the integrity of main line Mississippi River levees from the threat of flow slides in sand deposits.
Date: June 1988
Creator: Torrey, Victor H., III
Item Type: Refine your search to only Report

Levee Underseepage Software: User Manual and Validation [Floppy Disk]

Description: A FORTRAN 77 computer program (LEVSEEP), developed to analyze levee underseepage on IBM PC compatible microcomputers with an 8087 math coprocessor. The software and associated equipment plots cross sections and piezometer data; calculates seepage flow and substratum pressure; analyzes landside berm, river side blanket, cutoff and relief well control measures; and finally, estimates the construction cost of these alternatives.
Date: September 1989
Creator: Cunny, Robert W.; Agostinelli, Victor M., Jr. & Taylor, Hugh M., Jr.
Item Type: Refine your search to only Dataset

Levee Underseepage Analysis for Special Foundation Conditions [Floppy Disk]

Description: Computer program developed to predict underseepage conditions for special cases of levee and foundation geometry. The differential equations for levee underseepage were derived and programmed in finite difference form for three special cases of boundary conditions. The developed programs allow analyses that are not restricted to the boundary conditions assumed in the conventional, closed form solution, i.e., two foundation layers of uniform thickness with horizontal boundaries.
Date: September 1989
Creator: Wolff, Thomas F.
Item Type: Refine your search to only Dataset
open access

15 Mile Road/Edison Corridor Sewer Tunnel Failure Study, Detroit Area, Michigan

Description: Partial abstract: "The study consisted of field and laboratory investigations, construction evaluation, and geotechnical and structural analyses to determine the cause(s) of distress and failure of a 2600-ft section of 12-ft 9-in. diameter concrete-lined sanitary sewer tunnel in the Detroit, Mich., area. [...] The report includes summaries of all pertinent construction records, results of all pertinent past and current field and laboratory tests on construction and geotechnical materials, and… more
Date: January 1981
Creator: Albert, Dick; Hoff, George C.; Lorence, Brian; Mitchell, Gerald B.; Mlakar, Paul F.; Murphy, William L. et al.
Item Type: Refine your search to only Report
open access

Foundation Grouting Practices at Corps of Engineers Dams

Description: The purpose of the assessment is to provide background information on the Corps' practices, identify shortcomings in specifications, estimates, grout placement techniques, and, in general, to determine the effectiveness of the Corps' grouting programs. The report reviews past grouting projects and describes the planning, execution, and performance evaluation of the programs.
Date: October 1984
Creator: Albritton, John; Jackson, Lawson & Bangert, Robert
Item Type: Refine your search to only Report
open access

Concepts for Installation of the Precast Concrete Stay-in-Place Forming System for Lock Wall Rehabilitation in an Operational Lock

Description: Report describing a study to extend the application of a method to rehabilitate damaged lock walls that uses a stay-in-place forming system. "During this study, operational and design criteria were developed to serve as the basis for design. A number of repair concepts were identified that satisfied the criteria" (abstract, para. 3).
Date: December 1989
Creator: Waterways Experiment Station (U.S.)
Item Type: Refine your search to only Report
open access

Levee Underseepage Analysis for Special Foundation Conditions

Description: This report describes a research study in which techniques were developed for prediction of underseepage conditions for special cases of levee and foundation geometry. The differential equations for levee underseepage were derived and programmed in finite difference form for three special cases of boundary conditions. The developed programs allow analyses that are not restricted to the boundary conditions assumed in the conventional, closed form solution, i.e., two foundation layers of uniform … more
Date: September 1989
Creator: Wolff, Thomas F.
Item Type: Refine your search to only Report
open access

Geotechnical Applications of the Self-Potential Method, Report 3: Development of Self-Potential Interpretation Techniques for Seepage Detection

Description: This report consists of four distinct but complementary parts: (a) a laboratory/field study of environmental effects on self-potential (SP) electrodes and long-term stability of the electrodes; (b) field investigations at Beaver Dam, Arkansas; (c) development of a computer program for interpretation of seepage-related SP field survey data; (d) development of an extensive bibliography and data base for acquisition and interpretation of seepage-related SP data.
Date: February 1989
Creator: Corwin, Robert W. & Butler, Dwain K.
Item Type: Refine your search to only Report
open access

Levee Underseepage Software: User Manual and Validation

Description: Report discussing the FORTRAN 77 computer program (LEVSEEP), developed to analyze levee underseepage on IBM PC compatible microcomputers with an 8087 math coprocessor. The software and associated equipment plots cross sections and piezometer data; calculates seepage flow and substratum pressure; analyzes landside berm, river side blanket, cutoff and relief well control measures; and finally, estimates the construction cost of these alternatives.
Date: September 1989
Creator: Cunny, Robert W.; Agostinelli, Victor M., Jr. & Taylor, Hugh M., Jr.
Item Type: Refine your search to only Report
open access

Geotechnical Aspects of Rock Erosion in Emergency Spillway Channels, Report 1

Description: "The problem of rock erosion in unlined emergency spillway channels is described in this first-of-a series report. Recent CE and non-CE case histories which illustrate the potentially hazardous impacts of excessive erosion in discharge channels are described as are the various factors controlling erosion and other responses to emergency spillway overflow. Research programs designed to improve geotechnical capabilities with respect to selection of cost-effective preventive and remedial measures … more
Date: August 1986
Creator: Cameron, Christopher P.; Cato, Kerry Don; McAneny, Colin C. & May, James H.
Item Type: Refine your search to only Report
open access

State-of-the-Art for Assessing Earthquake Hazards in the United States, Report 25: Parameters for Specifying Intensity-Related Earthquake Ground Motions

Description: Abstract: "A set of 12 charts are presented that relate Modified Mercalli intensity units to peak horizontal acceleration, velocity and duration for near field and far field locations, hard and soft sites, and sizes of earthquakes. Also shown is the mean, mean plus one standard deviation, mean plus two standard deviations, and the highest observed values. Ratios are provided of vertical to horizontal motions and predominant periods. These charts are for use with known fault sources and for floa… more
Date: September 1987
Creator: Krinitzsky, E. L. & Chang, Frank K.
Item Type: Refine your search to only Report
open access

Weir Jetty Performance: Hydraulic and Sedimentary Considerations: Hydraulic Model Investigation

Description: Final report regarding studies of weir jetties as an alternative for jetty design at tidal inlets. "The hydraulic model investigation was performed to study important design parameters for a weir jetty system including weir length, elevation, orientation with respect to the shoreline and the conventional portion of the jetty structure, tidal currents over the weir section, flow patterns in the vicinity of the weir section, sediment movement over the weir and effects of the weir jetty on accreti… more
Date: March 1983
Creator: Seabergh, William C.
Item Type: Refine your search to only Report
open access

Mission Bay Harbor, California, Design for Wave and Surge Protection and Flood Control: Hydraulic Model Investigation

Description: Partial abstract: A 1:100-scale (undistorted) hydraulic model, reproducing Mission Bay Harbor, approximately 3 miles of shoreline, and sufficient offshore area to permit generation of the required test waves, was used to investigate the arrangement and design of proposed structures for (a) improving hazardous entrance conditions, (b) reducing surge inside the harbor, and (c) eliminating potential flood hazards. The original proposal for harbor improvement consisted of a 2,200-ft-long offshore b… more
Date: June 1983
Creator: Curren, Charles R.
Item Type: Refine your search to only Report
open access

Large-Scale Operations Management Test of Use of the White Amur for Control of Problem Aquatic Plants, Report 2: First Year Poststocking Results, Volume 2: The Fish, Mammals, and Waterfowl of Lake Conway, Florida

Description: Abstract: "Fish, waterfowl and wading birds, and aquatic mammal populations on Lake Conway were surveyed for 1 year after the introduction of the herbivorous fish, white amur (Ctenopharyngodon idella). Low water levels reduced littoral zone area, which lead to stunted panfish and poorer condition of largemouth bass. Vegetated samples supported more diverse fish populations than beach sites. White amur and migratory waterfowl consumed the same plant foods; continued reduction of submerged plants… more
Date: 1982
Creator: Hardin, Scott; Land, Roy; Morse, Gary & Spelman, Mike
Item Type: Refine your search to only Report
open access

The Vaiont Slide: A Geotechnical Analysis Based on New Geologic Observations of the Failure Surface, Volume 1: Main Text

Description: First part of a final report describing "efforts to confirm the existence and nature of clay seams in the [Vaiont Slide] mass and to confirm the possible existence of an 'old' slide at the site. These efforts were made by (a) firsthand field observations of the geology, (b) an examination of preslide and postslide airphotographs, (c) laboratory testing of samples of failure plane materials, and (d) and examination and translation of geologic and other documents related to preslide and postslid… more
Date: June 1985
Creator: Hendron, A. J., Jr. & Patton, F. D.
Item Type: Refine your search to only Report
open access

The Vaiont Slide: A Geotechnical Analysis Based on New Geologic Observations of the Failure Surface, Volume 2: Appendicies A Through G

Description: Second part of a final report containing appendices to accompany a study describing "efforts to confirm the existence and nature of clay seams in the [Vaiont Slide] mass and to confirm the possible existence of an 'old' slide at the site. These efforts were made by (a) firsthand field observations of the geology, (b) an examination of preslide and postslide airphotographs, (c) laboratory testing of samples of failure plane materials, and (d) and examination and translation of geologic and othe… more
Date: June 1985
Creator: Hendron, A. J., Jr. & Patton, F. D.
Item Type: Refine your search to only Report
Back to Top of Screen