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Correlation between ascending mining and stability of the overlying strata
151A partings, which offer interfaces for the uncontrolled detatchment of blocky material. Case studies in UK coal mines are presented, and the importance of coal face layout and design is demonstrated.
centre prop, were used. Support loads, roadway convergence, and coal and hangingwall movement around the roadway are described. Maintenance of an adequate length of roadway is a key factor in successful application of sub-level caving.
883384
Roof faila in Amtrollan Iongwalls Schaller, S; Savidis, G M In: Grmmd MovemeM aml Comroi Related to Coal M b d q (papers to the Symposimm, lllawmva, Amgmst 1986) P214225. Publ Parkville: AuMMM, 1986
General underground storage
Australian experiences of roof falls in advance of iongwall supports are presented, together with the past and present face stabilisation techniques and an analysis of factors contributing to roof falls. The case of the Angus Place colliery, where an extremely large roof fall was encountered, is presented. Chemical grouting of fractured areas with polyurethane foam allowed mining to restart after only two weeks.
883388 Lined rock caverns for the storage of hazardous waste (In
883385
Correlation between ascending, mining and stability of the
overly~ strata Li, H C In: Grouml Movement and Control Related to Coal Mining (papers to tke Sympositun, lllawarra, Augmst 1986) 1'232239. Publ Parkville: AuslMM, 1986 When the lower seam in a multiseam operation was mined in Kongzhaung colliery, China, many oblique fractures occurred in the upper seam, which was in the equilibrium zone. These fractures closed after the lower face passed. Despite some unevenness, the upper seam was subsequently extracted without major difficulty. When attempting multiseam extraction, the minimum allowable distance between seams must be predicted. By analysing convergence data and the subsidence profile, it was found that the minimum safe distance for ascending multiseam extraction depends on the mining height of the lower seam and the structure of the interseam rocks. 883386
Note of failure phenomena in the hangingwall of an excavation adjacent to a dec~e fault Golecid, J J Proc Intermaimud Symposimn os Faqri~edq in Complex Rock Formatiom, Beijiq, 3-7 Nomember, 1986 P683-689. Publ Beifing: Science Press, 1986 A rock area intersected by a normal dip-sfip fault, which is surrounded by a weak rock zone, is considered. The fault zone separates two regions, the hangingwall above it and the footwall below it. Longhole open stoping is used in the footwall and carried out in the direction from the fault boundary to the interior of the region. Displacement and stress distribution, in particular along the hangingwall boundary, have been calculated. Observations at the Dolphin Mine, Tasmania, are consistent with theoretical results.
Study on the support load and the roadway deformation in coal K,am Kim, I K; Kim, J K l n t ~ S ~ m on ~ hi Com~ex Rock Formmiom, Beifl~, 3-7 November, 1986 P745.749. Publ Beifing: Science Press, 1986 Support and roadway deformation in a steep, soft coal seam exploited by sub-iwel caving in Korea are presented. Two different types of support, each with a 40 ton capacity yielding
See also: 883104
German) Semprich, S; Speidel, S P; Schneider, H J Proc 6tli Imernatiomd Conference oR Rock Meekatdcs, Montreal, 30 ARg-IO Sept 1987 VI, P253-256. Publ Rotterdam: A A Balkema, 1987 Technologies for the lining and sealing of rock caverns for the storage of toxic wastes are under development. Seals consist of polymer sheets or welded or bonded thin metal sheets between two layers of shotcrete. The linings are designed so that leakage can be controlled. Design principles,structural and operational aspects are examined.
Radioactive waste disposal See also: 883182 883389 Applied study on tran~er of radtoaetive aaeUdes and heat dilfmion around radioactive waste disposal cavern in deformable fractured rock mass Sato, K; Ito, Y; Shimizu, T Proc 6tk Intematiomd Conferace oR Rock Meelmldcs, Montreal, 30 Ang-lO Sept 1987 VI, P245-248. Publ Rotterdam: A A Balkema, 1987 The numerical analysis of the coupled seepage-heat conduction and solute transfer around a nuclear waste repository is presented. Governing equations for groundwater flow are developed using the concept of a rock block model consisting of a number of rock blocks and interstitial material, which is deformed elastically by dynamic change in water pressure. Groundwater and stress analysis are carried out using the finite element method, and solute transfer by the modified fluid in cell method.
Groundwater problems 883390 Foiling water ingre~ in Swim road tmmels Ruckstuhl, F Tuns Tmudg VI9, NI2, Dec 1987, P27-29 Water, in combination with vehicle fumes, salt and high tern' peratures in traffic tunnels, has a great destructive potential. A number of methods of lining tunnels are discussed. The preferred method in Switzerland is a watertight membrane supported by a lining in unreinforced concrete. To be successful the membrane elements must be welded together to give watertightness, and be capable of sustaining movement and pressure without rupturing. A drainage system on the outside of the membrane prevents water pressure build up.
© 1988 Pergamon Press pie. Reproduction not permitted
centre prop, were used. Support loads, roadway convergence, and coal and hangingwall movement around the roadway are described. Maintenance of an adequate length of roadway is a key factor in successful application of sub-level caving.
883384
Roof faila in Amtrollan Iongwalls Schaller, S; Savidis, G M In: Grmmd MovemeM aml Comroi Related to Coal M b d q (papers to the Symposimm, lllawmva, Amgmst 1986) P214225. Publ Parkville: AuMMM, 1986
General underground storage
Australian experiences of roof falls in advance of iongwall supports are presented, together with the past and present face stabilisation techniques and an analysis of factors contributing to roof falls. The case of the Angus Place colliery, where an extremely large roof fall was encountered, is presented. Chemical grouting of fractured areas with polyurethane foam allowed mining to restart after only two weeks.
883388 Lined rock caverns for the storage of hazardous waste (In
883385
Correlation between ascending, mining and stability of the
overly~ strata Li, H C In: Grouml Movement and Control Related to Coal Mining (papers to tke Sympositun, lllawarra, Augmst 1986) 1'232239. Publ Parkville: AuslMM, 1986 When the lower seam in a multiseam operation was mined in Kongzhaung colliery, China, many oblique fractures occurred in the upper seam, which was in the equilibrium zone. These fractures closed after the lower face passed. Despite some unevenness, the upper seam was subsequently extracted without major difficulty. When attempting multiseam extraction, the minimum allowable distance between seams must be predicted. By analysing convergence data and the subsidence profile, it was found that the minimum safe distance for ascending multiseam extraction depends on the mining height of the lower seam and the structure of the interseam rocks. 883386
Note of failure phenomena in the hangingwall of an excavation adjacent to a dec~e fault Golecid, J J Proc Intermaimud Symposimn os Faqri~edq in Complex Rock Formatiom, Beijiq, 3-7 Nomember, 1986 P683-689. Publ Beifing: Science Press, 1986 A rock area intersected by a normal dip-sfip fault, which is surrounded by a weak rock zone, is considered. The fault zone separates two regions, the hangingwall above it and the footwall below it. Longhole open stoping is used in the footwall and carried out in the direction from the fault boundary to the interior of the region. Displacement and stress distribution, in particular along the hangingwall boundary, have been calculated. Observations at the Dolphin Mine, Tasmania, are consistent with theoretical results.
Study on the support load and the roadway deformation in coal K,am Kim, I K; Kim, J K l n t ~ S ~ m on ~ hi Com~ex Rock Formmiom, Beifl~, 3-7 November, 1986 P745.749. Publ Beifing: Science Press, 1986 Support and roadway deformation in a steep, soft coal seam exploited by sub-iwel caving in Korea are presented. Two different types of support, each with a 40 ton capacity yielding
See also: 883104
German) Semprich, S; Speidel, S P; Schneider, H J Proc 6tli Imernatiomd Conference oR Rock Meekatdcs, Montreal, 30 ARg-IO Sept 1987 VI, P253-256. Publ Rotterdam: A A Balkema, 1987 Technologies for the lining and sealing of rock caverns for the storage of toxic wastes are under development. Seals consist of polymer sheets or welded or bonded thin metal sheets between two layers of shotcrete. The linings are designed so that leakage can be controlled. Design principles,structural and operational aspects are examined.
Radioactive waste disposal See also: 883182 883389 Applied study on tran~er of radtoaetive aaeUdes and heat dilfmion around radioactive waste disposal cavern in deformable fractured rock mass Sato, K; Ito, Y; Shimizu, T Proc 6tk Intematiomd Conferace oR Rock Meelmldcs, Montreal, 30 Ang-lO Sept 1987 VI, P245-248. Publ Rotterdam: A A Balkema, 1987 The numerical analysis of the coupled seepage-heat conduction and solute transfer around a nuclear waste repository is presented. Governing equations for groundwater flow are developed using the concept of a rock block model consisting of a number of rock blocks and interstitial material, which is deformed elastically by dynamic change in water pressure. Groundwater and stress analysis are carried out using the finite element method, and solute transfer by the modified fluid in cell method.
Groundwater problems 883390 Foiling water ingre~ in Swim road tmmels Ruckstuhl, F Tuns Tmudg VI9, NI2, Dec 1987, P27-29 Water, in combination with vehicle fumes, salt and high tern' peratures in traffic tunnels, has a great destructive potential. A number of methods of lining tunnels are discussed. The preferred method in Switzerland is a watertight membrane supported by a lining in unreinforced concrete. To be successful the membrane elements must be welded together to give watertightness, and be capable of sustaining movement and pressure without rupturing. A drainage system on the outside of the membrane prevents water pressure build up.
© 1988 Pergamon Press pie. Reproduction not permitted