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Subsurface investigations of abandoned limestone workings in the West Midlands of England by use of remote sensors
145A 874126 Three dimensional fracture mapping in granite excavations using ground-penetrating radar Holloway, A L: Soonawala. N M: Collett. L S
CIM Bull ~'79. .V896. Dec 1986. P54-59 Results from the Underground Research Laboratory (URL) shaft have shown that fractures in granite can be mapped in three dimensions in the vicinity of underground excavations, using ground-penetrating radar. Once horizontal development at the URL is initiated, radar will be used to delineate fractured and unfractured areas as an aid in placing rooms for discrete fracture experiments, blast damage assessment and rock bolt testing. 874127 Grouting a sand dam Silver, M L: Fisk, P S: Greenman, A L
Civ Engng, N Y V56, NI2, Dee" 1986. P34-36 The Hardy Dana, Michigan, USA, is a sand embankment dam with a concrete core, constructed in 1929. Over many years, wooden trestles used in embankment construction have rotted, leaving potentially dangerous voids. The traditional method of locating these voids, drilling a closely spaced pattern of holes, ,,,,'as replaced by the use of ground penetrating radar, which gave a more complete picture of the conditions at a fraction of the normal cost and time. Low pressure grouting was used to fill the 124 voids found, and the effectiveness of the grouting program checked by' seismic methods. 874128 Method of measuring soil moisture by time-domain reflectometry Ledieu, J; De Ridder. P; De Clerck, P; Dautrebande, S
J Hydrol 1/88, N3/4.30 Noc 1986, P319-328 Soil moisture content can easily be measured in the field using this method, based on measurement of the transit time of electromagnetic waves along a probe in the soil. Results are compared with those obtained by gammametry. Precise evaluation is possible of water content in thin layers of the soil, with accuracy better than 1%.
874129 Cross hole seismic investigation for characterisation of the rock foundation at the site of a large rock fill dam By, T L
Norw Geotech lnst Publ N164, 1986, 4P
different engineering geological investigations made, the results obtained, the evaluation and the recommendations made are examined. Of particular importance ~ere refraction seismic investigations of the seabed at depths or" more than 350m. Also. core drilling at such depths was carried out for the first time. 874131 Subsurface investigations of abandoned limestone uorkings in the W e s t Midlands of England by use of remote sensors Braithwaite, P A; Cole, K W ln: Rock Engineering and E.rcavation in an Urban
Env&onment (papers to the Conference, Hong Kong, 24-27 February 1986) P27-39. Publ London: 13[M. 19Y6 Abandoned limestone workings `,`,'ere investigated to determine their extent, conditions and the present szate of stress, and to plan remedial measures. High qualit3 drilling methods were complemented by geophysical logging (resistivity, ultrasonic, gamma ray, gamma-gamma, and neutron logs), dipmeter surveys and downhole television surveys. 874132 Sand and gravel deposits within the United States exclusive economic zone: resource assessment and uses Williams, S J
Proe 18th Offshore Technology Conference, Houston, 5-8 34ay 1986 F2, P377-386. Pub/Richardson. Texas. O TC. 1986 Offshore sand and gravel deposits have been located and assessed. Exploration techniques were basicaIl? the same as for terrestrial investigations, but remote means were essential as target areas were covered with opaque water. High resolution seismic profiling equipment and side scan sonar were used, and their results confirmed using samples obtained by vibratory corers. 874133 Application of the induced polarisation method to offshore placer resource exploration Wynn, J C; Grosz, A E
Proc 18th Offshore Technology Conference, Houston, 5-8 May 1986 V2, P395-40I. Publ Richardson. Texas. OTC, 1986 Improvement in induced polarisation equipment has allowed its use in mapping seafloor geomorphological features. Reconnaissance studies suggest that concentration of titanium and other placer minerals can be detected in this manner. With suitable development it will be possible to conduct IP surveys over very large areas of continental shelf.
The Oddatjorn Dam, part of the Ulla-Forre hydroelectric project, has a foundation consisting partly of hard massive gneiss, but the left abutment was of variable quality, including some highly fractured pegmatites. In addition, there was blasting damage to the rock. Cross hole seismic investigation before the foundations were grouted is described. Zones of low quality were detected to assist the grouting crew. Grout consumption was found to be in good agreement with seismic quality interpretation.
874134 Application of impulse radar profiling to structural studies of morainic landforms in northern Finland Sutinen, R
874130
Proc International Conference on Construction in Glacial Tills and Boulder Clays, Edinburgh, 12-14 3larch 1985 1°31-37.
Engineering geological investigations for a subsea tunnel foran oil pipeline across the Hjeltefjorden Broch, E; Ustad, O
Tunnlg Undgr Space Tech V1, N3/4, 1986, P229-235 A subsea tunnel across the 6km `,~ide and 375m deep Hjehe0orden strait was part of Statoil's plan for transportation of crude oil to the Mongstad refinery (GULLPIPE). The planning and engineering geological investigations were carried out in three phases from May 1983 to May 1984. The
Publ Edinburgh. Engineering Technics Press. 19~5 Gravel substitutes are required in some areas of Finland. _ Hummocky moraines, consisting of coarse textured sediments and low in fines, are suitable in many cases. Impulse radar profiling can be used as a reference with drilling and soundings for effective investigation of such moraines, Continuous profiling has many advantages over point observations in areas with thin soil cover. Other applications of the technique are considered.
~2J 1987 Pergamon Journals Ltd. Reproduction not permitted
CIM Bull ~'79. .V896. Dec 1986. P54-59 Results from the Underground Research Laboratory (URL) shaft have shown that fractures in granite can be mapped in three dimensions in the vicinity of underground excavations, using ground-penetrating radar. Once horizontal development at the URL is initiated, radar will be used to delineate fractured and unfractured areas as an aid in placing rooms for discrete fracture experiments, blast damage assessment and rock bolt testing. 874127 Grouting a sand dam Silver, M L: Fisk, P S: Greenman, A L
Civ Engng, N Y V56, NI2, Dee" 1986. P34-36 The Hardy Dana, Michigan, USA, is a sand embankment dam with a concrete core, constructed in 1929. Over many years, wooden trestles used in embankment construction have rotted, leaving potentially dangerous voids. The traditional method of locating these voids, drilling a closely spaced pattern of holes, ,,,,'as replaced by the use of ground penetrating radar, which gave a more complete picture of the conditions at a fraction of the normal cost and time. Low pressure grouting was used to fill the 124 voids found, and the effectiveness of the grouting program checked by' seismic methods. 874128 Method of measuring soil moisture by time-domain reflectometry Ledieu, J; De Ridder. P; De Clerck, P; Dautrebande, S
J Hydrol 1/88, N3/4.30 Noc 1986, P319-328 Soil moisture content can easily be measured in the field using this method, based on measurement of the transit time of electromagnetic waves along a probe in the soil. Results are compared with those obtained by gammametry. Precise evaluation is possible of water content in thin layers of the soil, with accuracy better than 1%.
874129 Cross hole seismic investigation for characterisation of the rock foundation at the site of a large rock fill dam By, T L
Norw Geotech lnst Publ N164, 1986, 4P
different engineering geological investigations made, the results obtained, the evaluation and the recommendations made are examined. Of particular importance ~ere refraction seismic investigations of the seabed at depths or" more than 350m. Also. core drilling at such depths was carried out for the first time. 874131 Subsurface investigations of abandoned limestone uorkings in the W e s t Midlands of England by use of remote sensors Braithwaite, P A; Cole, K W ln: Rock Engineering and E.rcavation in an Urban
Env&onment (papers to the Conference, Hong Kong, 24-27 February 1986) P27-39. Publ London: 13[M. 19Y6 Abandoned limestone workings `,`,'ere investigated to determine their extent, conditions and the present szate of stress, and to plan remedial measures. High qualit3 drilling methods were complemented by geophysical logging (resistivity, ultrasonic, gamma ray, gamma-gamma, and neutron logs), dipmeter surveys and downhole television surveys. 874132 Sand and gravel deposits within the United States exclusive economic zone: resource assessment and uses Williams, S J
Proe 18th Offshore Technology Conference, Houston, 5-8 34ay 1986 F2, P377-386. Pub/Richardson. Texas. O TC. 1986 Offshore sand and gravel deposits have been located and assessed. Exploration techniques were basicaIl? the same as for terrestrial investigations, but remote means were essential as target areas were covered with opaque water. High resolution seismic profiling equipment and side scan sonar were used, and their results confirmed using samples obtained by vibratory corers. 874133 Application of the induced polarisation method to offshore placer resource exploration Wynn, J C; Grosz, A E
Proc 18th Offshore Technology Conference, Houston, 5-8 May 1986 V2, P395-40I. Publ Richardson. Texas. OTC, 1986 Improvement in induced polarisation equipment has allowed its use in mapping seafloor geomorphological features. Reconnaissance studies suggest that concentration of titanium and other placer minerals can be detected in this manner. With suitable development it will be possible to conduct IP surveys over very large areas of continental shelf.
The Oddatjorn Dam, part of the Ulla-Forre hydroelectric project, has a foundation consisting partly of hard massive gneiss, but the left abutment was of variable quality, including some highly fractured pegmatites. In addition, there was blasting damage to the rock. Cross hole seismic investigation before the foundations were grouted is described. Zones of low quality were detected to assist the grouting crew. Grout consumption was found to be in good agreement with seismic quality interpretation.
874134 Application of impulse radar profiling to structural studies of morainic landforms in northern Finland Sutinen, R
874130
Proc International Conference on Construction in Glacial Tills and Boulder Clays, Edinburgh, 12-14 3larch 1985 1°31-37.
Engineering geological investigations for a subsea tunnel foran oil pipeline across the Hjeltefjorden Broch, E; Ustad, O
Tunnlg Undgr Space Tech V1, N3/4, 1986, P229-235 A subsea tunnel across the 6km `,~ide and 375m deep Hjehe0orden strait was part of Statoil's plan for transportation of crude oil to the Mongstad refinery (GULLPIPE). The planning and engineering geological investigations were carried out in three phases from May 1983 to May 1984. The
Publ Edinburgh. Engineering Technics Press. 19~5 Gravel substitutes are required in some areas of Finland. _ Hummocky moraines, consisting of coarse textured sediments and low in fines, are suitable in many cases. Impulse radar profiling can be used as a reference with drilling and soundings for effective investigation of such moraines, Continuous profiling has many advantages over point observations in areas with thin soil cover. Other applications of the technique are considered.
~2J 1987 Pergamon Journals Ltd. Reproduction not permitted