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Keywords: loosening zoneClose
Paper presented at the 13th ISRM International Congress of Rock Mechanics, May 10–13, 2015
Paper Number: ISRM-13CONGRESS-2015-224
...FACTORS INFLUENCING THE LOOSENING ZONE AND CALCULATION METHOD FOR SUPPORT PRESSURES OF SHALLOW TUNNELS IN LAYERED ROCK STRATA *Zhiwei Wang and Chunsheng Qiao School of Civil Engineering, Beijing Jiaotong University 3 Shangyuancun, Xizhimenwai, Haidian district Beijing, China (*Corresponding author...
Paper presented at the 11th ISRM Congress, July 9–13, 2007
Paper Number: ISRM-11CONGRESS-2007-167
... ABSTRACT When tunnel is excavated in rock, rock around an opening trends to loosen. The rock behavior reaches to full stability by controlling a loosening zone and mobilizing ground arch effect. It is defined with the extent of inelastic zone(s) which consists of strain-softening and plastic...
Paper presented at the 7th ISRM Congress, September 16–20, 1991
Paper Number: ISRM-7CONGRESS-1991-203
... river which proud of its foremost water volume in the country. renewable energy tbm pilot machine schist Schilt correlation deformation modulus green schist tunnel rock classification loosening zone plane excavation gripper Reservoir Characterization black schist schistsity plane...
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