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Çѱ¹Áö¹Ý°øÇÐȸ / v.14, no.1, 1998³â, pp.93-108
ÁöÇϰøµ¿ÀÇ Çü»ó°ú ±Ô¸ð°¡ °øµ¿ÀÇ ¾ÈÁ¤¼º¿¡ ¹ÌÄ¡´Â ¿µÇâ ¿¬±¸
( A Study on the Shape and Size Effects on the Stability of Underground Openings )
¹Ú»óÂù;¹®Çö±¸; ÇѾç´ëÇб³ ´ëÇпø ÀÚ¿ø°øÇаú;Á¤È¸¿ø, ÇѾç´ëÇб³ °ø°ú´ëÇÐ ÀÚ¿øÈ¯°æ°øÇаú;
 
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º» ¿¬±¸¿¡¼­´Â ÁöÇϰøµ¿ÀÇ Çü»ó°ú ±Ô¸ð°¡ °øµ¿ÀÇ ¾ÈÁ¤¼º¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» ÀÌ·ÐÀû ÇØ¼®¹ý°ú ¼öÄ¡ ÇØ¼®¹ýÀ» ÀÌ¿ëÇÏ¿© Æò°¡ÇÏ¿´´Ù. ÁöÇÏ °øµ¿ÀÇ ¾ÈÁ¤¼º¿¡ ¿µÇâÀ» ¹ÌÄ¡´Â Á¦¹Ý¿ä¼Òµé Áß¿¡¼­ ¾ÏÁú, ÃʱâÀÀ·ÂÀÇ Å©±â ¹× ¹æÇ⠱׸®°í Ãø¾Ð°è¼ö°¡ °øµ¿ÁÖÀ§¿¡ ¹ß»ýÇÏ´Â º¯À§, ÀÀ·ÂÁýÁß ±×¸®°í ¼Ò¼º¿µ¿ªÀÇ Å©±â¿Í ¹üÀ§¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» Áß½ÉÀ¸·Î ¾ÈÁ¤¼ºÀ» Æò°¡ÇÏ¿´´Ù. ÀÌ·ÐÀû ÇØ¼®¹ýÀ» ÀÌ¿ëÇÏ¿© °øµ¿ º®¸éÀÇ Çü»óº¯È­¿¡ µû¸¥ ÀÀ·ÂÁýÁß°è¼öÀÇ º¯È­¸¦ ºÐ¼®ÇÏ¿´À¸¸ç °øµ¿ º®¸é¿¡¼­ÀÇ ÀÀ·ÂÁýÁß°è¼ö´Â º®¸éÀÇ °î·ü¹Ý°æ¿¡ ¹Ýºñ·ÊÇÏ¿© ³ªÅ¸³µ´Ù. ¼öÄ¡ ÇØ¼®¹ýÀ» ÀÌ¿ëÇÑ ¸Å°³º¯¼ö¿¬±¸¸¦ ÅëÇÏ¿© °øµ¿ÀÇ Çü»ó°ú Å©±â º¯È­¿¡ µû¶ó¼­ Á¦¹Ý¿ä¼ÒµéÀÌ ³ªÅ¸³»´Â Ư¡µéÀ» ºñ±³ Æò°¡ÇÏ¿´´Ù. À§ Á¦¹Ý¿ä¼ÒµéÀÌ ³ªÅ¸³»´Â Ư¡µéÀ» ÁöÇϺñÃà°øµ¿ Çü»óÀ¸·Î ³Î¸® »ç¿ëµÇ°í ÀÖ´Â ¸¶Á¦Çü °øµ¿¿¡ Àû¿ëÇÏ¿© Ãø¾Ð°è¼ö¿Í °øµ¿´Ü¸éÀÇ ºñ°¡ °øµ¿ÁÖÀ§¿¡ ¹ß»ýÇÏ´Â Ãִ뺯À§ÀÇ º¯È­ ¹× ¼Ò¼º¿µ¿ªÀÇ ¹ß´Þ ¾ç»ó¿¡ ¹ÌÄ¡´Â ¿µÇâÀ» Æò°¡ÇÏ¿´´Ù. º» ¿¬±¸¸¦ ÅëÇÏ¿© ÇöÀç °Ç¼³µÇ°í ÀÖ´Â ±¹³» ÁöÇÏÀúÀå°øµ¿ÀÇ °øµ¿´Ü¸éÀÇ ºñ´Â °øµ¿ÀÌ À§Ä¡ÇÒ ÇöÀåÀÇ Ãø¾Ð°è¼öÁ¶°Ç¿¡ µû¶ó¼­ ¾ÈÁ¤¼ºÀÇ Ä¿´Ù¶õ ¹®Á¦ ¾øÀ̵µ °øµ¿ÀÇ ³ôÀÌ Áõ°¡¿¡ ÀÇÇÑ °øµ¿ÀÇ ´Ü¸éÀû Áõ°¡°¡ °æÁ¦ÀûÀ¸·Î °¡´ÉÇÔÀ» ¾Ë¼ö ÀÖ¾ú´Ù.
In this study, the analytic solutions and numerical methods were used to estimate the shape and size effects on the stability of underground openings. The stability of underground openings was evaluated by scrutinizing the effects of the rock mass quality, the state of in-situ stresses and the lateral earth pressure coefficient on the displacement, the stress concentration and the plastic region developed in the vicinity of the openings. The analytic solutions have shown that the stress concentration factor is inversely proportional to the radius of curvature of openings. Through parametric study on the various shapes and sizes of underground openings the characteristics of the controlling factors concerned with the stability were analyzed. Then, the study was extended to the horseshoe-shaped openings commonly used for under ground storage. Through the extended study the effects of the stress ratio and the height-towidth ratio of openings on the maximum displacement and plastic region developed around the openings were estimated. The results have shorn that the height-to-width ratio of domestic storage caverns can be increased economically without stability problem, as far as the lateral earth pressure coefficient is appropriate.
 
Ű¿öµå
Underground opening;Shape;Size;Displacement;Stress concentration;Plastic region;Stability;Lateral earth pressure coefficient;
 
Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.14, no.1, 1998³â, pp.93-108
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199811920447935)
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