- Email: [email protected]
The atomic energy of Canada limited Underground Research Laboratory: an overview of geomechanics characterization
UNDERGROUND EXCAVATIONS:MINES 944376 Design and construction of a segmental lining for a m a c h i n e - b o r e d tunnel: Delivery Tunnel North, Lesotho Highlands W a t e r Project J. A. Richards, F. Returner & J. C. Sharp, Tunnelling & Underground Space Technology, 9(1), 1994, pp 91-99. The 21-kin-long Delivery Tunnel North for the Lesotho Highlands Water Project is split into two main tunnel drives of 8 km and 11 km lengths. The tunnel is located in the sedimentary rocks of the upper Karoo series with cover of up to 350 m. The rock units comprise claystones, siltstones and sandstones. In the poorer geology, early support of the tunnel periphery is essential. The method of tunnel construction involves excavation by a "IBM and the simultaneous erection of a precast concrete segmental lining that provides both rock support and a final tunnel lining. The segmental lining is designed and constructed as part of an integrated excavation/support/lining system. -from Authors 944377
Blue Mountains sewage transfer scheme: a
review of tunnelling
Van Putten & L. B. McQueen, Tunnelling & Underground Space Technology, 9(2), 1994, pp 215-224.
R.
To preserve the natural surroundings of the Blue Mountains of New South Wales while simultaneously serving the needs of the region's growing population, the Sydney Water Board has developed an improved, but complex, sewage transfer scheme for the area. This paper traces the development of the scheme, with particular attention to the geology of the area, the equipment used to construct the runnels for the project, and elements of the directional drilling that connects the sewer areas to the tunnel. -Authors
Power plants 944378 ground
The atomic energy of C a n a d a limited U n d e r . Research L a b o r a t o r y : an overview of geomechanics c h a r a c t e r i z a t i o n C . D . Martin & G, R. Simmons, in: Comprehensive rock engineering. Vol. 3, ed J.A. Hudson, (Pergamon), 1993, pp 915-950. The chapter provides a general overview of the geological setting for the URL and describes the laboratory rock propeRies. It describes in in situ state of stress measured and observed at the URL, and highlights the in situ mechanical response of the excavations in the stressed rock mass. Next, the chapter presents some of the coupling observed in hydraulic/mechanical in situ testing. The final section summarizes the results and briefly discusses the future work planned for the URL. -from Authors 944379 Design of large powerhouse caverns in weak rock E. Hock & D. Moy, in: Comprehensive rock engineering. Vol. 5, ed J.A. Hudson, (Pergamon), 1993, pp 85-110. The design concepts discussed in this chapter are based upon experience drawn from a number o f hydroelectric projects. The choice of the size and shape of power and transformer caverns, the location of these caverns relative to each other and to the ground surface, the influence of joints and bedding planes on the stability of the excavations and the choice of the most appropriate support systerns are issues which are common to a l l o f these schemes. In applying these principles to a new scheme, the reader shoul/i be aware that each scheme will have its own set of rock mass properties, in situ stress conditions and design constraints imposed by mechanical, electrical and hydraulic conditions. Consequently, the general design concepts outlined have to be modified to suit each scheme. -from Authors
944380 Grizzly project finished against the odds T. Avery, Tunnels & Tunnelling,26(3), 1994, pp 21-24. The successful completion of the 20.2 M W Grizzly hydropower project in the northern Sierra Nevada mountain range of California is discussed. The project has involved extensive tunnelling work and utilizesthe 750 ft drop in head between Lower Bucks Lake and Grizzly Forebay.The project has been promoted by the city of Santa Clara south of San Francisco. It was completed ahead of schedule
217A
despite early delays during portal construction. Site geology and construction methods are described. -D.W.Taylor 944381 A case history in A r g e n t i n a - rock mechanics for the u n d e r g r o u n d works m the pumping storage development o f Rio Grande no 1 O. Moretto, R. E. Sarra Pistone & J. C. Del Rio, in: Comprehensive rock engineering. Vol. 5, ed J.A. Hudson, (Pergamon), 1993, pp 159-192. After a short description of the project and the general geology of the site, the geological and geotechnical investigations performed during the preliminary and final design periods are explained, giving the results obtained both from geologicalsurveys and rock tests in the field and in the laboratory. A description is given of each of the underground works, indicating the dimensions, excavation stages and problems involved. Then follows a detailed treatment o f the support design for two of the main works, the powerhouse cavern and the outlet-inlet tunnel, showing how the excavations were stabilized, both in south rock and in fault zones. Finally, the monitoring in the powerhouse cavern and outlet-inlet tunnel is described and analyzed, comparing the measured results with the calculatedresults. -from Authors 944382
P u m p e d storage scheme in the e m p e r o r s '
cyard ~r•a vDarling,
Tunnels & Tunnelling, 26(3), 1994, pp 14-15,17-18. A pumped storage scheme currently under construction in the Sh~an]ing are 40 km north of Beijing is described. The area was favoured by Chinese Emperors during the Ming dynasty for burials, and is still known as the Ming Tombs area. The geology at the site is highly unpredictable and a number o f construction delays have been experienced, including a large collapse in a penstock tunnel. Equipment used is described. -D.W.Taylor 944383 Power caverns of Mingtan p u m p e d storage project, Taiwan Yu Cheng & Shih-Chou Liu, in: Comprehensive rock engineering. Vol. 5, ed J.A. Hudson, (Pergamon), 1993, pp 111-131. The project called for the excavation of two large caverns roximately 300 m underground inside the steep left ank of the Shuili River. Geological investigation work and in situ and laboratory tests were performed to establish the engineering properties of the rockmass surrounding the caverns, to provide sound and reliable parameters for nesign. In order to stabilize the caverns both dnrin~ and after excavation, two special support measures were incorporated into the design and corned out in advance of excavation. These were the treatment of shear zones encountered in the cavem roof, and the pre-reinforcement at the crown and haunches. In addition, steel-fiber reinforced shotcrete and rockbolts were extensively used as the permanent lining and support. A monitoring system was provided.for observing and recording the behavior of the rockmass m response to the excavation process. -from Authors
~pp
Mines 944384
12
Australasian coal mining practice. Monograph
ed A. J. Hargraves & C. H. Maztin, (Australasian Institute of Mining and Metallurgy), ISBN (hardback) O 949106 80 I, 1993, 734 pp. This monograph includes 45 chapters on current practice m the coal mining industry in Australasia. Over 150 an~ors were involved on its preparation, covering such topics as basic considerations; surface mining; underground mining; coal treatment; administrative issues; promotional aspects; and future developments. -after Authors 944385 Caving geomechanics G . A . Ferguson, in: Comprehensive rock engineering. Vol. 5, ed J.A. Hudson, (Pergamon), 1993, pp 359-392.
Blue Mountains sewage transfer scheme: a
review of tunnelling
Van Putten & L. B. McQueen, Tunnelling & Underground Space Technology, 9(2), 1994, pp 215-224.
R.
To preserve the natural surroundings of the Blue Mountains of New South Wales while simultaneously serving the needs of the region's growing population, the Sydney Water Board has developed an improved, but complex, sewage transfer scheme for the area. This paper traces the development of the scheme, with particular attention to the geology of the area, the equipment used to construct the runnels for the project, and elements of the directional drilling that connects the sewer areas to the tunnel. -Authors
Power plants 944378 ground
The atomic energy of C a n a d a limited U n d e r . Research L a b o r a t o r y : an overview of geomechanics c h a r a c t e r i z a t i o n C . D . Martin & G, R. Simmons, in: Comprehensive rock engineering. Vol. 3, ed J.A. Hudson, (Pergamon), 1993, pp 915-950. The chapter provides a general overview of the geological setting for the URL and describes the laboratory rock propeRies. It describes in in situ state of stress measured and observed at the URL, and highlights the in situ mechanical response of the excavations in the stressed rock mass. Next, the chapter presents some of the coupling observed in hydraulic/mechanical in situ testing. The final section summarizes the results and briefly discusses the future work planned for the URL. -from Authors 944379 Design of large powerhouse caverns in weak rock E. Hock & D. Moy, in: Comprehensive rock engineering. Vol. 5, ed J.A. Hudson, (Pergamon), 1993, pp 85-110. The design concepts discussed in this chapter are based upon experience drawn from a number o f hydroelectric projects. The choice of the size and shape of power and transformer caverns, the location of these caverns relative to each other and to the ground surface, the influence of joints and bedding planes on the stability of the excavations and the choice of the most appropriate support systerns are issues which are common to a l l o f these schemes. In applying these principles to a new scheme, the reader shoul/i be aware that each scheme will have its own set of rock mass properties, in situ stress conditions and design constraints imposed by mechanical, electrical and hydraulic conditions. Consequently, the general design concepts outlined have to be modified to suit each scheme. -from Authors
944380 Grizzly project finished against the odds T. Avery, Tunnels & Tunnelling,26(3), 1994, pp 21-24. The successful completion of the 20.2 M W Grizzly hydropower project in the northern Sierra Nevada mountain range of California is discussed. The project has involved extensive tunnelling work and utilizesthe 750 ft drop in head between Lower Bucks Lake and Grizzly Forebay.The project has been promoted by the city of Santa Clara south of San Francisco. It was completed ahead of schedule
217A
despite early delays during portal construction. Site geology and construction methods are described. -D.W.Taylor 944381 A case history in A r g e n t i n a - rock mechanics for the u n d e r g r o u n d works m the pumping storage development o f Rio Grande no 1 O. Moretto, R. E. Sarra Pistone & J. C. Del Rio, in: Comprehensive rock engineering. Vol. 5, ed J.A. Hudson, (Pergamon), 1993, pp 159-192. After a short description of the project and the general geology of the site, the geological and geotechnical investigations performed during the preliminary and final design periods are explained, giving the results obtained both from geologicalsurveys and rock tests in the field and in the laboratory. A description is given of each of the underground works, indicating the dimensions, excavation stages and problems involved. Then follows a detailed treatment o f the support design for two of the main works, the powerhouse cavern and the outlet-inlet tunnel, showing how the excavations were stabilized, both in south rock and in fault zones. Finally, the monitoring in the powerhouse cavern and outlet-inlet tunnel is described and analyzed, comparing the measured results with the calculatedresults. -from Authors 944382
P u m p e d storage scheme in the e m p e r o r s '
cyard ~r•a vDarling,
Tunnels & Tunnelling, 26(3), 1994, pp 14-15,17-18. A pumped storage scheme currently under construction in the Sh~an]ing are 40 km north of Beijing is described. The area was favoured by Chinese Emperors during the Ming dynasty for burials, and is still known as the Ming Tombs area. The geology at the site is highly unpredictable and a number o f construction delays have been experienced, including a large collapse in a penstock tunnel. Equipment used is described. -D.W.Taylor 944383 Power caverns of Mingtan p u m p e d storage project, Taiwan Yu Cheng & Shih-Chou Liu, in: Comprehensive rock engineering. Vol. 5, ed J.A. Hudson, (Pergamon), 1993, pp 111-131. The project called for the excavation of two large caverns roximately 300 m underground inside the steep left ank of the Shuili River. Geological investigation work and in situ and laboratory tests were performed to establish the engineering properties of the rockmass surrounding the caverns, to provide sound and reliable parameters for nesign. In order to stabilize the caverns both dnrin~ and after excavation, two special support measures were incorporated into the design and corned out in advance of excavation. These were the treatment of shear zones encountered in the cavem roof, and the pre-reinforcement at the crown and haunches. In addition, steel-fiber reinforced shotcrete and rockbolts were extensively used as the permanent lining and support. A monitoring system was provided.for observing and recording the behavior of the rockmass m response to the excavation process. -from Authors
~pp
Mines 944384
12
Australasian coal mining practice. Monograph
ed A. J. Hargraves & C. H. Maztin, (Australasian Institute of Mining and Metallurgy), ISBN (hardback) O 949106 80 I, 1993, 734 pp. This monograph includes 45 chapters on current practice m the coal mining industry in Australasia. Over 150 an~ors were involved on its preparation, covering such topics as basic considerations; surface mining; underground mining; coal treatment; administrative issues; promotional aspects; and future developments. -after Authors 944385 Caving geomechanics G . A . Ferguson, in: Comprehensive rock engineering. Vol. 5, ed J.A. Hudson, (Pergamon), 1993, pp 359-392.