... of the beam. To assess the support mechanisms of thin spray-on liners when adhered to a rock surface, the plaster beams were coated with a 5 mm thick fibreglass reinforced polymer liner. These beams were tested to study the effect the polymer liner has on restricting tensile failure of the beam. Results...

...Monitoring and Reinforcement of Ground Subsidence in Abandoned Mine Areas in Korea Chung-In Leea*, Tae-Heok Kimb and Nan Zhanga a Seoul National University, Seoul, Korea bMine Reclamation Corporation, Wonju, Korea * cilee@snu.ac.kr (corresponding author s E-mail) Abstract Ground subsidence...

... Abstract Ground support design is usually based on previous experience and evolves over a number of years. As the rock mass conditions change with an increasing depth, the ground support performance may change and become unacceptable. That is, the installed reinforcement capacities may...

... is that it has been thought that safety is secured even if it does not apply an overhead cost from the former. c) Usually, the thing for which advance of degradation is slow and has so far repeated repair and reinforcement in symptomatic treatment about a degradation portion. d) Since the concrete lining which...

... Abstract Rock masses are often heavily jointed and instability involving falling or sliding of rock block may arise upon excavation. As such, supports or reinforcements are required to stabilize the unstable rock blocks. Accurate prediction of mode of rock block failure and volume of unstable...

... anchors are all types of rock anchors, and, except the slope stability anchor, are used to reinforce structures. Generally, a dam anchor is large, and plays a very important role as a structural system supporting the safety of the dam. In this paper, we classified these as structure reinforcement anchors...

...ISRM International Symposium 2010 and 6 th Asian Rock Mechanics Symposium - Advances in Rock Engineering, 23-27 October, 2010, New Delhi, India STEEL FIBRE REINFORCEMENT FOR TUNNELS UNDER SEVERE GEOLOGICAL CONDITIONS R. SUTER University of Applied Sciences, Fribourg, Switzerland B. DE RIVAZ Bekaert...

... Abstract: This paper deals with the use of fibre reinforced concrete (FTC) in underground construction activities. The correct choice of a steel fibre for structural use is a challenge to engineers and researchers. It is to be remembered that the appropriate choice of fibres strongly depends...

... the behaviour of the weak and stratified parting under varying conditions of underground development of the contiguous seams/sections. The study also involved techniques and procedures for strengthening of weak and stratified parting between the contiguous coal seams/sections by reinforcement for a room...

... is the determination of stress levels associated with the yield of wall due to excavation. Hence proper steps should be taken to ensure the safety of the tunnel by providing suitable supports and reinforcement. Since the ground behaviour is not properly understood, it is necessary to estimate the appropriate support...

... during a long service period is not so high due to the long-term durability and maintenance free of the underground. For a long time, underground structures such as tunnels and caverns have been considered as eternal structures which do not need large-scale repair and reinforcement all over their service...

... to investigate the detailed size and geometry of the fault zone, the mechanical properties of fault rocks, and of the hydrogeological conditions. Considering the geological conditions, the design concept was focused on the reinforcement of the ground preceding to excavation of tunnel. The effectiveness...

... China University of Geosciences(Wuhan) Wuhan 430074 China (e-mail: zhudp@yangtzeu.edu.cn) Abstract Landslide is one of the most outstanding disasters in the Three Gorges Reservoir Area in China and anti-slide pile is a common measure for landslide mass reinforcement. In spite of this, it doesn't mean...

...A new theory for reinforcing roof by gridding bolt set and its applications TAN YUNLIANG, WANG TONGXU & MA ZHITAO Engineering Mechanics Department ,Shandong University of Science & Technology, China AI3.STRACT: Mining process is a typical dynamic process, the stress Slate in roof changes...

...Reinforcement of saline rock mass on the example of the salt mine Wieliczka A GARLICKI, A GONET, st. STRYCZEK The University of Mining and Metallurgy, Cracow, Poland ABSTRACT: On the example of the Salt Mine "Wieliezka", where in 1992 a catastrophic water influx took place, the methods of seCUring...