1 edition of Geologic investigation of roof and floor strata found in the catalog.
Geologic investigation of roof and floor strata
Philip J. DeMaris
by Illinois Dept. of Energy and Natural Resources, State Geological Survey Division in Champaign, Ill
Written in English
Includes bibliographical references (p. 49-51).
|Statement||Philip J. DeMaris ... [et al.].|
|Series||ISGS contract/grant report -- 1983-2|
|The Physical Object|
|Pagination||viii, 69 p. :|
|Number of Pages||69|
1. Introduction. Coal burst induced by faults instability is a crucial point that affects coal safety mining in the underground opening. Faults are considered as tectonic fracture in Earth’s crust along which horizontal, vertical, or diagonal displacement of one side of a fault plane relative to the other took place (Bryant, ).They can be classified as normal, reverse and strike-slip Cited by: 3. The roof strata were also characterised by undulating bedding planes, some of which had localised, thin, silty carbonaceous coatings and some were locally iron oxide stained. Subsequent Endoscope Investigations The roof of the failure area was subject to an examination with an 8mm diameter fibre optic endoscopic camera.
Investigating the Past. Using a Geologic Time Scale. In this activity, students in groups of three will construct a vertical representation of a Geologic Time Scale and research facts, events, and organisms that differentiate between Time Scale Eras, Periods, and Epochs. Teacher Background Information. Size: KB. The geological environment of two South Wales collieries at which site investigations were carried out is summarised. This is followed by a review of identified geological parameters and their effects on floor heave under the headings of discontinuities, mineralogy, and groundwater. Methods of underground site investigation, laboratory testing, and data treatment are by: 3.
Geotechnical investigations for tunnelling 1. 1 GEOTECHNICAL INVESTIGATIONS FOR TUNNELLING by Prof.A. Balasubramanian Centre for Advanced Studies in Earth Science, University of Mysore, Mysore 2. 2 Introduction: Tunnelling is a serious engineering project. Geologic mapping is an important task in exploration. Mapping involves compiling detailed field notes on coal seams, strata above and below the seam, rock types, geologic structures, stream data, and man-made structures. Good maps and mapping techniques provide a means for planning and accomplishing exploration, development, reclamation, day-to.
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Geologic investigation of roof and floor strata: longwall demonstration, Old Ben Mine no. prediction of coal balls in the Herrin coal: final technical report, part 2 Author: Philip J DeMaris. Geologic Investigation of Roof and Floor Strata: Longwall Demonstration, Old Ben Mine No. Authors Baur-RA; Demaris-PJ.
Geologic Investigation of Roof and Floor Strata: Longwall Demonstration, Old Ben Mine No. Prediction of Coal Balls in the Herrin Coal. Authors. Geologic investigation of roof and floor strata: Longwall demonstration, Old Ben Mine no. final technical report, no.
1 by Bauer, Robert A; DeMaris, Philip JPages: Many considerations must be taken into account, such as lithology of immediate roof and floor strata, seam height, gas and oil wells, faults, depressions in the mine floor (water) and increases in floor elevation (gas), overburden, streams and horizontal stress directions, amongst many other : Mark Van Dyke, Ted Klemetti, Joe Wickline.
Geologic investigation of roof and floor strata: longwall demonstration, Old Ben Mine no. prediction of coal balls in the Herrin coal: final technical report, part 2 / - by: 2.
Geologic investigation of roof and floor strata: Longwall demonstration, Old Ben Mine no. final technical report, no. 1 / By Robert A. Bauer and Philip J. DeMaris AbstractAuthor: Robert A. Bauer and Philip J. DeMaris. Established References for Geological Terminology Adaptations or refinements of the Bureau of Reclamation (Reclamation) standards presented in this and subse-quent chapters may be established to meet specific design requirements or site-specific geologic complexity when justified.
The Glossary of Geology, Fourth Edition  1, published by the File Size: 56KB. hi County, Idaho: U.S. Geological Survey Geologic Quadrangle Map GQ–, scaleVhay, J.S.,Cobalt-copper deposits of the Blackbird district, Lemhi County, Idaho: U.S. Geological Survey Strategic Minerals Investigations Preliminary Report 3–.
The goals for this website are to catalog completed geologic maps and to help track the progress of currently funded maps. If you would like to propose for a mapping investigation, check the appropriate planetary body in the map index or refer to the various mapping pages (linked under Maps above) to see which geologic maps may have already.
of the roof, seam, and floor strata is undertaken beneath average depths of cover. The intersection of Small scale roof and floor tectonic structures, suchss were encountered at Mine No. 1, should be anticipated. Methods of Geological Investigation These may be divided into two main groups: the surface investigations and the subsurface investigations.
Surface Investigations These include preparation of topographic maps (if these are not already available) using the normal mapping techniques.
In fact all field surveys begin with the preparation (or. • Roof: top of tunnel • Floor: bottom • Face: surface exposed by excavation at the end of tunnel. • But in thin bedded horizontal strata, the overbreak will cause a peaked roof.
• Presence of faults in the tunnel alignment can be investigated by geological investigation of the surface geology as well as by using geo physical. of stresses in the roof, pillars and floor exceeded the rupture of the roof rock strata; and (2) geologic disturbances in the immediate roof, such as slickenslides, channel sands, transition zones, rider coal seams, kettlebottoms, cracks and joints and the presence of water, are often associ-ated with roof falls (Home et al.
,File Size: KB. by falls of roof and rib. The geologic composition of roof rock strata has an important bearing on the stability of roof and rib, but the relationship is poorly understood.
Therefore, the U.S. Bureau of Mines has supported a number of studies on the influence of geologic factors on roof stability. A field investigation for overlying strata behaviour study and deformation zone from the floor level of 3# induced stress induces seam interaction failure in roof strata.
C/G Geologic Investigation of Roof and Floor Strata: Longwall Demonstration, Old Ben Mine No. 49 p. 28 figs. 3 tbls C/G Identification of Mine Subsidence on Aerial Photographs in Central Illinois. 31p. Glass Fibre Reinforced Gypsum (GFRG) Panel known as Rapidwall is a building panel made-up of calcined gypsum plaster, reinforced with glass fibers.
The panel was originally developed by GFRG Building System Australia and used since in Australia for mass scale building construction. Now, these panels are being produced in IndiaFile Size: KB.
C/G Geologic Investigation of Roof and Floor Strata: Longwall Demonstration, Old Ben Mine No. 49p. (NTIS call number DOE/ET/) C/G Prediction of Coal Balls in the Herrin Coal.
69p. (NTIS call number DOE/ET ) C/G Structural Geology of Southeastern Illinois and Vicinity. p., 2pls. • Geological investigations – Following geological characters of the area should be investigated for particular site selected for dam – Geology of area comprising of main topographical features, natural drainage patterns, general characters and structures of rock formations, the trend and type of weathering and erosion of area.
Hard roof strata may cause coal bumps or less violent spalling on the longwall face. Soft floor strata create floor heave and difficulties in advancing supports. For ascending extraction (fig.
18), the degree of subsidence damage in the roof, floor, and coal will determine the difficulty of mining. Purchase Strata Mechanics, Volume 32 - 1st Edition. Print Book & E-Book.
ISBNBook Edition: 1. Dubiel, Russell F., Summary of Geology and coal Resources of the Blackhawk Formation in the Southern Wasatch Plateau, Central Utah U.S.
Geological Survey Professional Paper –B, Assessment, Chapter K of Geologic Assessment of coal in the Colorado Plateau: Arizona, Colorado, New Mexico, and Utah Edited by M.A.
Gary J., Hampson, John A. Howell, and Stephen S. Flint.