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Çѱ¹Áö¹Ý°øÇÐȸ / v.21, no.5, 2005³â, pp.103-110
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( Characteristics of Excessive Horizontal Stress in ]Korea by Hydraulic Fracturing Stress Measurement )
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ÀÌ ³í¹®¿¡¼­´Â ÇöÀå ¼ö¾ÐÆÄ¼â½ÃÇè¿¡¼­ ¾ò¾îÁø 500°³ ÀÌ»óÀÇ ÃøÁ¤ ÀÚ·áµéÀ» ÀÌ¿ëÇÏ¿© ±¹³» °úÀ× ¼öÆòÀÀ·ÂÀÇ ºÐÆ÷ Ư¼º¿¡ ´ëÇÑ ¿¬±¸¸¦ ¼öÇàÇÏ¿´´Ù. ÇöÀå ÀڷḦ ¹ÙÅÁÀ¸·Î ¼öÆòÀÀ·Â ¼ººÐÀÇ Å©±â¿Í ÀÛ¿ë¹æÇ⼺, Ãø¾Ð°è¼ö ºÐÆ÷¿¡ ´ëÇÑ »ó¼¼ ºÐ¼®À» ÇÏ¿´´Ù. ¶ÇÇÑ ½Éµµ¿¡ µû¸¥ ¼öÆòÀÀ·Â ¼ººÐµéÀÇ »ó°ü½Ä°ú Ãø¾Ð°è¼ö ºÐÆ÷ ¿µ¿ªÀÇ »ó, ÇÏÇÑ °æ°è½ÄÀ» Á¦¾ÈÇÏ¿´´Ù. ½Éµµ 310m ¹Ì¸¸ ¿µ¿ª¿¡¼­ Ãø¾Ð°è¼ö´Â ½Éµµ Áõ°¡¿¡ µû¶ó °¨¼ÒµÇ°í ¾ÈÁ¤È­µÇ´Â °æÇâÀ» ³ªÅ¸³»Áö¸¸ Áö¿ª¿¡ µû¶ó ½Éµµ loom ÀÌ»óÀÇ ¿µ¿ª¿¡ 3.0¿¡ °¡±î¿î Ãø¾Ð°è¼ö¸¦ °¡Áö´Â °úÀ× ¼öÆòÀåÀÌ Çü¼ºµÇ¾î ÀÖ´Â °ÍÀ¸·Î Á¶»çµÇ¾ú´Ù. °úÀ× ¼öÆòÀÀ·ÂÀå ºÐÆ÷Áö¿ª¿¡ ´ëÇÑ Æò°¡ °á°ú ±¹³» ¿©·¯ Áö¿ªÀÇ ½Éµµ 310m À̳» ±¸°£¿¡¼­ ¾Ï¹Ý ±¸Á¶¹° ±¼Âø½Ã ÀÀ·Â¿¡ ÀÇÇÑ Ã뼺ÆÄ±«ÀÇ °¡´É¼ºÀÌ ÀÖ´Â °ÍÀ¸·Î ºÐ¼®µÇ¾ú´Ù.
In this paper, the characteristics of excessive horizontal stress components in Korea were studied using more than five hundred measured data set of in-situ hydraulic fracturing test. Based on the in-situ testing data, the magnitude and orientation of the horizontal stress component and variation of stress ratio (K) with depth were investigated. And also horizontal stress magnitude versus depth relationships and distribution limits of stress ratio components were suggested. For the depth less than 310 m in the entire territory, the stress ratio has a tendency to diminish and stabilize with depth, but fur some areas, it was revealed that the excessive horizontal stress fields with stress ratio close to 3.0 below 200 m in depth have formed. The results from the investigation of excessive horizontal stress regions showed that there existed several regions where the localized excessive horizontal stress was big enough to potentially induce brittle failure around the openings at less than 300 m in depth.
 
Ű¿öµå
Brittle failure;Excessive horizontal stress;Hydraulic fracturing test;Stress ratio (K);
 
Çѱ¹Áö¹Ý°øÇÐȸ³í¹®Áý / v.21, no.5, 2005³â, pp.103-110
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-2427
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO200504704323520)
¾ð¾î : Çѱ¹¾î
³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø
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