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Use of remote sensing to estimate earthwork volumes for road construction
229A directions. The Kaiser effect was clear in all cases, but the threshold stress was different along each direction. Results are interpreted to give the direction and magnitude of the principal stresses of the past maximum or currently acting stress field.
Site Investigation and Field Observation Remote sensing and photographic techniques 914236 Use of remote sensing to estimate earthwork volumes for road construction Akinyede, J O: Turner, K; Rengers, N Proc 6th International Congress International Association of Engineering Geology, Amsterdam, 6-10 August 1990 VI, P543.550. Publ Rotterdam: A A Balkema, 1990 Excavation of soil and rock materials is a major component of road construction costs. Knowledge of terrain and road gradients and qualities of fill materials available is required to balance cut and fill quantities. Internal relief and valley density, and terrain units can be determined from remote sensing data. A Geological Information System ((}IS) has been developed to optimise volume-mass balance for road construction using these data. Applications in northeastern Nigeria are described.
Structural and geotechnical mapping 914237 Ground surface delineation of fractures over mined-out openings using carbon dioxide emissions Kirschner, F E; Williams, R E; Raltston, D R Ground Water V28. N4, July-Aug 1990, [}576-582 The Bunker Hill mine in Idaho is situated within highly fractured metasedimentary rocks. Major flow paths and acid mine drainage producing zones have already been identified in an acid mine drainage abatement program. To identify minor structural features (fractures) that may constitute recharge pathways to underlying acid producing rock, a surface soil-gas measuring technique was employed. It is based on the hypothesis that carbon dioxide produced by reaction of acid drainage with the carbonate rocks will be detected. Three surficially unobservable fractures were identified in the study area, over an observable fault. 914238 Promising coal interface detection methods Mowrey, (3 L Min Engng V43, NI, Jan 1991, P134-138 One element of the USBM computer assisted mining research program is development of reliable coal interface detection systems. Promising concepts include monitoring of natural gamma radiation, vibration signature change of the machine in different rock strata, and passive infrared thermography to measure surface temperatures of the geological materials close to the cutting head. Samples of coal and immediate roof and floor have been collected from major US coal seams for laboratory evaluation of these techniques, so that they may then be applied to specific mines as appropriate.
914239 Geologic considerations related to the selection of sanitary landfill sites in Sevier County, Utah Solomon, B J; Klauk, R H Proc Symposium on Geology and Hydrology of Hazardous-
Waste, Mining-Waste, Waste-Water and Repositories Sites in Utah, Salt Lake City, 1989 P191-201. Publ Salt Lake City: Symposium and Field Conference, 1989 (Utah Geological Association Publication 17) When selecting landfill sites, geology and geological hazards, groundwater conditions, and soil conditions for cap and liner must be considered. Fine grained cohesive alluvial deposits, isolated from shallow groundwater and flooding, and avoidance of fractured bedrock and active faults are favoured. These factors were examined in Sevier County, Utah, and results are presented and potentially suitable sites identified. 914240 Holistic approach to detailed geotechnical data gathering in southern Africa Barker, O B Proc 6th International Congress International Association of Engineering Geology, Amsterdam, 6-10 August 1990 VI. P559-565. Publ Rotterdam: A A Balkema, 1990 During civil and mining engineering projects, unique opportunities arise for structural mapping of areas which may be only briefly exposed. Data collected may be of interest and important to safety. Planning of mapping under these circumstances is discussed. The need for quality audit of the project is first considered. Methods to acquire data by in situ mapping, photography, or remote sensing are described. Qualified personnel must be involved at the initial stages of projects to ensure this mapping takes place. 914241 Special purpose engineering geological methods for mapping and interpretation of rock mechanical phenomena Brauer, V; Pahl, A Proc 6th International Congress International Association of Engineering Geology, Amsterdam, 6-10 August 1990 VI. P567-574. Publ Rotterdam: A A Balkema, 1990 Basic methods for engineering geological investigations for rock mass classification were evaluated at the (3rimsel test site in the Aare granite of Switzerland. Stress measurements and fracture flow tests were carried out in test boreholes which had been extensively mapped. Relations between frequency of fractures and stress level and between fracture orientation and stress were seen. A rotation of the horizontal stress in an almost intact region is correlated with an identical change in microcrack orientation. Various structurally homogeneous zones could be identified from the mapping. 914242 Stages of geotechnical investigation for townships de Beer, J H Proc 6th International Congress International Association of Engineering Geology, Amsterdam, 6-10 August 1990 VI, t'581-584. Publ Rotterdam: A A Balkema, 1990 Planning necessities for major urban developments in South Africa are discussed. (3eotechnical considerations should be made for collapsible and expansive soils, sinkholes and doline subsidences, presence of shallow bedrock, swampy ground, filled areas, potential slope instabilities, and availability of construction materials. Feasibility studies followed by geotechnical reconnaissance, particularly in dolomitic areas, development planning and design, all with ongoing detailed geotechnical feedback, are suggested.
© 1991 Pergamon Press pie. Reproduction not permitted
Site Investigation and Field Observation Remote sensing and photographic techniques 914236 Use of remote sensing to estimate earthwork volumes for road construction Akinyede, J O: Turner, K; Rengers, N Proc 6th International Congress International Association of Engineering Geology, Amsterdam, 6-10 August 1990 VI, P543.550. Publ Rotterdam: A A Balkema, 1990 Excavation of soil and rock materials is a major component of road construction costs. Knowledge of terrain and road gradients and qualities of fill materials available is required to balance cut and fill quantities. Internal relief and valley density, and terrain units can be determined from remote sensing data. A Geological Information System ((}IS) has been developed to optimise volume-mass balance for road construction using these data. Applications in northeastern Nigeria are described.
Structural and geotechnical mapping 914237 Ground surface delineation of fractures over mined-out openings using carbon dioxide emissions Kirschner, F E; Williams, R E; Raltston, D R Ground Water V28. N4, July-Aug 1990, [}576-582 The Bunker Hill mine in Idaho is situated within highly fractured metasedimentary rocks. Major flow paths and acid mine drainage producing zones have already been identified in an acid mine drainage abatement program. To identify minor structural features (fractures) that may constitute recharge pathways to underlying acid producing rock, a surface soil-gas measuring technique was employed. It is based on the hypothesis that carbon dioxide produced by reaction of acid drainage with the carbonate rocks will be detected. Three surficially unobservable fractures were identified in the study area, over an observable fault. 914238 Promising coal interface detection methods Mowrey, (3 L Min Engng V43, NI, Jan 1991, P134-138 One element of the USBM computer assisted mining research program is development of reliable coal interface detection systems. Promising concepts include monitoring of natural gamma radiation, vibration signature change of the machine in different rock strata, and passive infrared thermography to measure surface temperatures of the geological materials close to the cutting head. Samples of coal and immediate roof and floor have been collected from major US coal seams for laboratory evaluation of these techniques, so that they may then be applied to specific mines as appropriate.
914239 Geologic considerations related to the selection of sanitary landfill sites in Sevier County, Utah Solomon, B J; Klauk, R H Proc Symposium on Geology and Hydrology of Hazardous-
Waste, Mining-Waste, Waste-Water and Repositories Sites in Utah, Salt Lake City, 1989 P191-201. Publ Salt Lake City: Symposium and Field Conference, 1989 (Utah Geological Association Publication 17) When selecting landfill sites, geology and geological hazards, groundwater conditions, and soil conditions for cap and liner must be considered. Fine grained cohesive alluvial deposits, isolated from shallow groundwater and flooding, and avoidance of fractured bedrock and active faults are favoured. These factors were examined in Sevier County, Utah, and results are presented and potentially suitable sites identified. 914240 Holistic approach to detailed geotechnical data gathering in southern Africa Barker, O B Proc 6th International Congress International Association of Engineering Geology, Amsterdam, 6-10 August 1990 VI. P559-565. Publ Rotterdam: A A Balkema, 1990 During civil and mining engineering projects, unique opportunities arise for structural mapping of areas which may be only briefly exposed. Data collected may be of interest and important to safety. Planning of mapping under these circumstances is discussed. The need for quality audit of the project is first considered. Methods to acquire data by in situ mapping, photography, or remote sensing are described. Qualified personnel must be involved at the initial stages of projects to ensure this mapping takes place. 914241 Special purpose engineering geological methods for mapping and interpretation of rock mechanical phenomena Brauer, V; Pahl, A Proc 6th International Congress International Association of Engineering Geology, Amsterdam, 6-10 August 1990 VI. P567-574. Publ Rotterdam: A A Balkema, 1990 Basic methods for engineering geological investigations for rock mass classification were evaluated at the (3rimsel test site in the Aare granite of Switzerland. Stress measurements and fracture flow tests were carried out in test boreholes which had been extensively mapped. Relations between frequency of fractures and stress level and between fracture orientation and stress were seen. A rotation of the horizontal stress in an almost intact region is correlated with an identical change in microcrack orientation. Various structurally homogeneous zones could be identified from the mapping. 914242 Stages of geotechnical investigation for townships de Beer, J H Proc 6th International Congress International Association of Engineering Geology, Amsterdam, 6-10 August 1990 VI, t'581-584. Publ Rotterdam: A A Balkema, 1990 Planning necessities for major urban developments in South Africa are discussed. (3eotechnical considerations should be made for collapsible and expansive soils, sinkholes and doline subsidences, presence of shallow bedrock, swampy ground, filled areas, potential slope instabilities, and availability of construction materials. Feasibility studies followed by geotechnical reconnaissance, particularly in dolomitic areas, development planning and design, all with ongoing detailed geotechnical feedback, are suggested.
© 1991 Pergamon Press pie. Reproduction not permitted