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Çѱ¹Áö¹Ý°øÇÐȸ / v.11, no.3, 1995³â, pp.139-162
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ÁöÇÏ ÇÙ Æó±â¹° ÀúÀå ¾Ï¿°ÀÇ ÆÄ±«Çö»ó °ËÁõ ¹× ºÐ¼®
( Prediction of Hydrofracture of Rock Salt under Ground at the Waste Isolation Pilot Plant ) |
| Ç㱤Èñ;ÀÌó±Ù;Çã¿; ÃæºÏ´ëÇб³ ´ëÇпø Åä¸ñ°øÇаú ¹Ú»ç°úÁ¤ ¼ö·á;ÃæºÏ´ëÇб³ °ø°ú´ëÇÐ Åä¸ñ°øÇаú, University of New Mexico Åä¸ñ°øÇаú ¹Ú»ç°úÁ¤ ¼ö·á;;
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| WIPP¿¡¼ °¡½º·Î ÀÎÇÑ ÆÄ±«ÀÇ °¡´É¼ºÀ» ÇØ¼®Àû °è»ê°ú ¼öÄ¡ÇØ¼® ¹× ½Ç³»½ÇøÀ» ÅëÇÏ¿© ¿¬±¸ÇÏ¿´´Ù. ¿ì¼± º» ¿¬±¸¿Í °ü·ÃµÈ ÈÇйÝÀÀ½ÄÀ» Á¶»çÇÑ °á°ú, Æó±â¹° ³»ÀÇ Ã¶ÀÌ »êÈÇÏ¸é¼ ´Ù·®ÀÇ °¡½º°¡ ¹ß»ýµÉ ¼ö ÀÖÀ½À» ¾Ë¾Ò´Ù. ¶ÇÇÑ °£´ÜÇÑ ÁöÇϼö È帧ÀÇ °è»ê°á°ú, Åõ¼ö¼ºÀÌ ³ôÀº ÆÄ¼â¿µ¿ªÀÌ Á¸ÀçÇÏÁö ¾Ê´Â °æ¿ì ÀÌ °¡½º·®Àº ¾Ï¿° ³»ºÎ¿Í ¾àÇÑ ¼öÆò¸é¿¡ ÀÎÀå±Õ¿À» ÃÊ·¡Çϱ⿡ ÃæºÐÈ÷ ³ôÀº ¾Ð·ÂÀ» ¾ß±â½Ãų °ÍÀÌ´Ù. ÇØ¼®Àû °è»êÀº ¼±Çüź¼ºÆÄ±«¿ªÇÐÀÇ °³³äÀ» »ç¿ëÇÏ¿© ¼öÇàÇÏ¿´°í, ¼öÄ¡ÇØ¼®Àº À¯ÇÑ¿ä¼Ò¹ýÀ» »ç¿ëÇÏ¿© ÇàÇÏ¿´´Ù. ¶ÇÇÑ ½Ç³»½ÇÇèÀº ¹ß»ý°¡´ÉÇÑ ÆÄ±« ¸ÞÄ«´ÏÁòÀ» ¼³¸íÇϱâ À§ÇÏ¿© ÇàÇÏ¿´´Ù. ÇØ¼®°á°ú ¾àÇÑ °æ¼®°íÃþ¿¡¼ ¼öÆòÀ¸·Î ±Õ¿ÀÌ Áõ°¡µÈ µÚ¿¡ ±× ±Õ¿Àº ÀÌ ÃþÀ» ¶ã°í³ª°¡ ¾Ï¿° À§ÂÊÀ¸·Î °è¼Ó ÀüÆøµÇ¾î ÁöÇ¥¸é ÂÊÀÇ ¼öÆò¹æÇâ°ú 53$^{circ}$°æ»ç°¢À» °®°í ÁöÇ¥¸é¿¡ µµ´ÞµÈ´Ù. ÀÌ¿Í °°Àº ÈÄÀÚÀÇ Çö»óÀ» ¹æÁöÇϱâ À§ÇÏ¿© °æ¼®°í´Â ¾Ï¿°ÀÇ Àμºº¸´Ù 0.5590¹è°¡ ÀûÀº ÆÄ±«ÀμºÀ» °¡Á®¾ß ÇÏ´Â °ÍÀ¸·Î ³ªÅ¸³µ´Ù. ½ÇÇè°á°ú ¼¼ °¡Áö ÇüÅÂÀÇ ±Õ¿(radial vertical cracks, horizontal circular cracks and cone -shaped cracks)ÀÌ °üÂûµÇ¾ú´Ù. |
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| The possibility of the development of gas driven hydrofractures at the Waste Isolation Pilot Plant(WIPP) is investigated through analytical and numerical calculations and through laboratory experiments. First, an investigation of the chemical reactions involved shows that a large volume of gas could potentially be generated through the oxidation of iron in the waste. Simple ground water'flow calculations then show that unless regions of high permeability has been created, this gas volume will build up the pressure high enough to cause tensile damage in the horizontal planes of weakness or in the halite itself. The analytical calculations were performed using the concepts of linear elastic fracture mechanics and the numerical calculations were done using the finite element method. Also, laboratory tests were conducted to illustrate possible failure mechanisms. It is possible that after growing horizontal crack in the weaker anhydride layer, the crack could break out of this layer and propagate upward into the halite and toward the ground surface at an inclined argle of around 53$^{circ}$ above horizontal. To prevent this latter phenomenon the anhydrite must have a fracture toughness less than 0.5590 times than that of the halite. Through the tests, three types of crack(radial vertical cracks, horizontal circular cracks and cone -shaped cracks) were observed. |
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Çѱ¹Áö¹Ý°øÇÐȸÁö:Áö¹Ý / v.11, no.3, 1995³â, pp.139-162
Çѱ¹Áö¹Ý°øÇÐȸ
ISSN : 1229-215X
UCI : G100:I100-KOI(KISTI1.1003/JNL.JAKO199511920446166)
¾ð¾î : Çѱ¹¾î |
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| ³í¹® Á¦°ø : KISTI Çѱ¹°úÇбâ¼úÁ¤º¸¿¬±¸¿ø |
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