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11篇 您的检索式:作者名="GISLE STJERN"
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1A review on the performance of conventional and energy-absorbing rockbolts显示文摘This is a review paper on the performances of both conventional and energy-absorbing rockbolts manifested in laboratory tests. Characteristic parameters such as ultimate load, displacement and energy absorption are reported, in addition to loadedisplacement graphs for every type of rockbolt. Conventional rockbolts refer to mechanical rockbolts, fully-grouted rebars and frictional rockbolts. According to the test results, under static pull loading a mechanical rockbolt usually fails at the plate; a fully-grouted rebar bolt fails in the bolt shank at an ultimate load equal to the strength of the steel after a small amount of displacement; and a frictional rockbolt is subjected to large displacement at a low yield load. Under shear loading, all types of bolts fail in the shank. Energy-absorbing rockbolts are developed aiming to combat instability problems in burst-prone and squeezing rock conditions. They absorb deformation energy either through ploughing/slippage at predefined load levels or through stretching of the steel bolt. An energy-absorbing rockbolt can carry a high load and also accommodate significant rock displacement, and thus its energy-absorbing capacity is high. The test results show that the energy absorption of the energy-absorbing bolts is much larger than that of all conventional bolts. The dynamic load capacity is smaller than the static load capacity for the energy-absorbing bolts displacing based on ploughing/slippage while they are approximately the same for the D-Bolt that displaces based on steel stretching.Charlie C.Li Gisle Stjern Arne Myrvang 2014Journal of Rock Mechanics and Geotechnical Engineering2014,6,4:19
2Support of large rock caverns in norway显示文摘Einar Broch Arne M Myrvang Gisle Stjern 1996Tunneling and Underground Space Technology1996,11,1:1
3The influence of blasting on grouted rock bolts显示文摘STJERN Gisle MYRVANG AITIe 1998Tunneling and Underground Space Technology1998,13,1:1
4The influence of blasting on grouted rockbohs显示文摘Gisle Stjern Arne Myrvang 1998Tunneling and Underground Space Technology1998,13,1:1
5Significant A chivements in Composite Technology in 2001,Qualification and testing of Composite tethers and Riser for Ultra Deep Water显示文摘TURID STORHAUG GISLE STJERN 2001Including commenced Field Demonstration at Heidrun TLP2001,,:1
6Support of large rock caverns in Norway显示文摘Einar Broch Arne M Myrvang Gisle Stjern 1996Tunnelling and Underground Space Technology1996,11,1:1
7The influence of blasting on grouted rockbolts显示文摘Gisle Stjern Arne Myrvang 1998Tunnelling and Underground Space Technology incorporating Trenchless Technology Research1998,,1:1
8The influence of blasting on grouted rock bolts显示文摘STJERN Gisle MYRVANG Arne 1998Tunneling and Underground Space Technology1998,13,1:1
9The influence of blasting on grouted rock bolts 显示文摘Gisle Stjern Arne Myrvang 1998Tunneling and Underground Space Technology1998,13,1:1
10Myrvang,The influence of blasting on grouted rockbolts显示文摘Gisle Stjern Arne 1995Tunneling and Underground Space Technology1995,13,1:1
11The Influence of Blasting on Grouted Rockbohs 显示文摘Gisle Stjern Arne Myrvang 1998Tunneling and Underground Space Technology1998,13,1:1
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