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| Elastic stress analytic solution of the round and underground cavern under slope |
| Received:March 30, 2010 Revised:December 18, 2010 |
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| DOI：10.7511/jslx20121011 |
| KeyWord:underground cavern under slope deep-buried and shallow-buried rock cavern complex function method stress analytic solution |
| Author | Institution |
| 江学良 |
中南林业科技大学 土木工程与力学学院, 长沙 ; 湖南城市学院 土木工程学院, 益阳 |
| 杨慧 |
中南林业科技大学 土木工程与力学学院, 长沙 ; 中南大学 资源与安全工程学院, 长沙 |
| 曹平 |
中南大学 资源与安全工程学院, 长沙 |
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| Abstract: |
| The underground rock caverns were divided into deep-buried and shallow-buried cavern according to the spatial location of slope and cavern. The calculation models of caverns were built. The shallow-buried cavern’s stress analytic solution was derived by elasticity theory and complex function method and the deep-buried cavern was regarded as a stress concentration problem of biaxial compression infinite plate pole and the analytic solution of stress was gotten. Taken a round cavern under earth bank for example, the distributions of radial and hoop stress are obtained from calculation. The calculation results show that the circumferential compression stress of the horizontal line through circle centre decreases, but the radial compression stress firstly increases and then decreases with the increase of distance to the hole’s periphery. The circumferential tensile stress appears on the roof and the tensile stress transfers into compression stress and becomes bigger from roof to earth surface. The circumferential tensile stress is the biggest on the roof and bottom of cavern. The circumferential compression stress is the biggest on the side of cavern. The radial compression stress is smaller on the roof and bottom of cavern and it is biggest on the side of cavern. |