ἰ㥅G ⸅㉘䉤≄㜄㉐G 䙸⢰G 㚉㻉ⵝⷉ㜄G ♤⪬G 䙸⢰⺴G ᵉ⓸䏭㉥G ⷴ䞈㜄G Ḵ䚐G 㜤Ạ ;:
ISSN 1229-2427 (Print) ISSN 2288-646X (Online) http://dx.doi.org/10.7843/kgs.2013.29.12.87 㻤ᛵ㍈■ᙽ㻡䀔ᬄⓀ㍙# # ㆤ29᜔# 12㿀# 2013ᫌ# 12ぜ# pp. 87 G 94
JOURNAL OF THE KOREAN GEOTECHNICAL SOCIETY Vol.29, No.12, December 2013 pp. 87 G 94
ᅇ⭜# “⑯㑻ᑛ⤛⑧# 㢏᫇# ⢠ムὴῠ⤛# ᳃#
㢏᫇# འᜏ㘄⑼# 㦟⤛# ။㢧# ⤻Ⴗ
A Study on the Estimation of the Behaviors by Compression Method of Rock Pillar between Close Parallel Tunnels
ᢷ ㊓ ᜴1 Kim, Jae-Kyoung
# # Ⱈ2 Lee, Song
Abstract
In recent years, tunnel construction is being increased in order to resolve traffic congestion around urban area, however there are a lot of difficulties due to restrictions such as interference with existing alignment, adjacent structures and cost increase of land acquisition as well as public complaints for negative environmental impacts near the expected tunnel construction site. Therefore, applications of close parallel tunnel have been increasing greatly. But close parallel tunnels cannot guarantee the stability compared with normal parallel tunnel which has enough distance between tunnels.
So various methods to strengthen the pillar have been introduced recently, however there is few methods which consider the pillar behaviour in the state of compression. In this paper, the reinforcement methods which reflect the behavior of pillar were reviewed with comparision and analysis by numerical method.
⧟# # # ⴋ
Ŗ͒˞رʪ֮ݓܳѺۆİࣀǦ३ՙεڦॢࢢȇæԺۋݒÀॠČەڷǣşܕȤԸęۆԸ, ܳѺĵܓНęۆ
ÂԾ, ڌݓϔۓۆ܃ॢфϔۓҼݒÀˣęÏڹ܃ॢۺۍڅۍęࢢȇٚ܁ҙݓܳѺۆлڙфঞąী՜߯ՙজ
ˣęÏڹঞąۺۍڅۍڷͿۍ३ࢢȇćন֨ψڹرͲړںýČەɰ. ۋε३ՙॠČۙࢢȇÂۆäνεܙó
ॠəŖۿѿԺࢢȇۆԐͻÀݒÀॠČەڷǣۋ͠ॢŖۿѿԺࢢȇۆąڍࢢȇÂäνε߿қ০ঝ҃ॠČەə
ێъۺۍࢢȇقҼ३؋܁ՁࠑϸقԴҝνॢ۾ۋψڹʚ, ০ܙڹज़͆ҙۆÌʪεݒÀ֨ࢅşڦॢɰتॢ
ѓѪںۺڌॠČەڷǣज़͆ҙۆۺ܁ॢäʴՁںъٖॢज़͆ҙ҃ÌėѪڹψݓ؍ڹ֬܁ۋɰ. ҆ȦЛقԴə
ज़͆ҙۆۺ܁ॢäʴՁںъٖॢ҃ÌėѪںҼİ, қԵॠČۋεս࠘३Եںࣀ३êݒॠٕɰ.
Keywords : Parallel tunnel, Stability, Rock pillar, Strength/Stress ratio, Factor of safety
1ⲯ㬦⭪, ▶⭒❶ṗរ㧳ᇪ# 㘺ὃᆏ㧳ᆖ# ₯╆ᆖⲯ# (Member, Graduate Student, Dept. of Civil Engrg., Univ. of Seoul, Tel: +82-031-380-6700, Fax: +82-31-380-6798, [email protected], Corresponding author, ᇪ❺ⲚⰪ)
2ⲯ㬦⭪, ▶⭒❶ṗរ㧳ᇪ# 㘺ὃᆏ㧳ᆖ# ⲯᇪ⚲# (Member, Prof., Dept. of Civil Engrg, Univ. of Seoul)
*→# ᘖῒ⩪# រ㧶# 㘺⯲Ḗ# ⭪㧲ᜮ# 㬦⭪⯚# 2014ᗞ# 6⭮# 30Ⱆዦ⹚# ኒ# ᕎ⭃⯞# 㧳㬦ᳶ# ᕎⶖ❶ዊ# ₮ᰧᝢ. ⲚⰪ⯲# ᄚ㘺# ᕎ⭃ᆖ# 㨂፲# ᘖῒ⩪# ᄦⱆ㧲⪆# ṗᝢ.
Copyright © 2013 by the Korean Geotechnical Society
This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Ilj1# 41# Vwuhqjwk# sdudphwhu# fkdqjhv# e|# jurxwlqj
Ilj1# 51# Vwuhvv# fkdqjhv# e|# frpsuhvvlrq# phwkrg
1. ⑧# ᮫
Ķࢹۆ70% ۋԜۋԓݓεՁॠČەəݓۺ
ݜڷͿۍ३ʪͿфߏʪˣۆԸÒ͟ۋǣ֪Ժ֨
ࢢȇۆьԦڹज़ٍۺۋ͆ॣսەɰ. ߯Ŗ˞رԴə
ʪ֮ݓݓًقԴۆİࣀǦ३ՙεڦ३ɰսۆࢢȇۋ
ćনʼČەڷǣڌݓϔۓۆ܃ॢęۍŖäܳл˞ۆ
лڙ, ٍۙঞąী՜߯ՙজڅĵˣۋەرࢢȇÂۋ üäν(Pillar Width)Àܛ͒ٮɵνԜɾ০Ŗۿʽ
ͿćনʼČەɰ.
ࢢȇÂۋüäνÀܙڹąڍقəࢢȇԐۋقьԦॠ əज़͆ҙۆĵܓۺ؋܁Ձঝ҃ÀܼڅॢʚĶٽۆą ڍĹʂԜݓъܓæق˰ܼ͆ؖѹߕԺ࠘, ڙݓъؒ
ъটڌ, Ըॱࢢȇ͆ۋɮ˃ƍݒݕˣۆѓ؋ںۺڌ (Kamimura, 2002)ॠČەəъϸ, ĶǴۆąڍज़͆ҙ
҃ÌѓѪфԺć, ֨ėԐͻÀɰՙҙܔॢ֬܁ۋǣ߯
Ŗ˞رۋقʂॢটьॢٍĵÀݕॱʼČەɰ(Kim et al., 2003; Jang, 2006; Sin et al., 2010; Kim et al., 2013).
ज़͆҃ÌѓѪقəŔ͆ڍࣶ(Grouting) ˣںࣀ३ݓ ъÌʪεȭۋäǣ҇࣡̚əÌٍԸˣڷͿज़͆ҙε
Àؓ(Pre-stressing)ॠيज़͆ҙۆࣷĨÌʪεȭۋəѓ Ѫۋەڷǣࢢȇٚ܁ڦ࠘ۆʂҙқۋؒъࠗقćনʼ əąڍÀψڹěćͿԜşقԴسśॢज़͆ҙ҃Ìѓ Ѫܼۻۙ҃ɰəۙۆѓѪںܳͿԐڌॠČەɰ.
ज़͆ҙÀؓѓѪۆąڍ҇࣡εۋڌॢۻϸۿ
ѓ֩ۋǣPC ÌٍԸںۋڌॢۙڮۤ֩ںܳͿۋ ڌॠČەڷǣۋ˞ۆäʴՁںۺۼ০ъٖॢԐڌ
ٚəŔνψݓ؍ڷ϶ɰՙঔڌʼرԐڌॠČەə
ì̚ॢԐ֬ۋɰ.
ٍ҆ĵقԴəज़͆ҙ҃ÌѓѪф؋܁ՁथÀѓѪ قʂ३ÒĜॠČज़͆҃ÌѓѪܼ҇࣡εۋڌॢ
ۻϸۿѓ֩ę PC ÌٍԸں ۋڌॢ ۙڮۤ ѓ֩ق
ʂ३ս࠘३Եںսॱॠٕڷ϶, ŔĀęεҼİқԵ ॠٕɰ.
2. 㢏᫇# ‿འὴῠ
ज़͆ҙ҃ÌѓѪڹࡾóŔ͆ڍࣶėѪˣںࣀ३ݓ ъÌʪ܁սεݒÀ֨ࢅäǣ҇࣡̚əÌٍԸڷͿ
ज़͆ҙεÀؓॠيज़͆ҙۆࣷĨÌʪεȭۋəѓѪ ۋەɰ.
2.1 ᅃ᫇⧻㙐# ၀ῠ
ۼνÀьɵʽؒъۋǣࢹԐࠗۆąڍŔ͆ڍࣶÀ
ؓقۆॢѓѪںܳͿԐڌॢɰ. Ŕ͠ǣؒъقʂॢ
Ŕ͆ڍࣶėѪڹتॢؒъۆąڍقəؒъۆܙڹ
ۼνࣧԞقমęۺڷͿܳۓॠəʚرͲړۋەڷ϶
ۺۼॠݓ؍ڹܳۓؓۆąڍ١০Ͳؒъۆۋٰࣷթ
ˣۆ؊ٖॳںߣ͒ॣսەɰ.
Fig. 1ڹŔ͆ڍࣶںࣀ३ݓъÌʪ܁ս(۾ͳ)À ݒ ÀʼəڿͳԜε҃يܵɰ.
2.2 ཋ⢠# ၀ῠ
ज़͆ҙۆࣷĨÌʪεȭۋəѓѪڷͿ2߹ڿͳԜ
ۆज़͆ҙقšۤͳ(Pre-stress)ںۚڌ֨ࡈ3߹ڿͳԜ
ͿѺঞ֨ࢅəìڷͿԴ, šۤͳںۚڌ֨ࢅəۦΒ ͿəPCÌٍԸ, ҇࣡ˣںܳͿԐڌॠČەɰ.
Fig. 2əÀؓėѪقۆ३ѺজʼəڿͳԜε҃ي
ܵɰ.
ἰ㥅G ⸅㉘䉤≄㜄㉐G 䙸⢰G 㚉㻉ⵝⷉ㜄G ♤⪬G 䙸⢰⺴G ᵉ⓸䏭㉥G ⷴ䞈㜄G Ḵ䚐G 㜤Ạ ;<
Ilj1# 61# Ghilqlwlrqv# ri# dyhudjh# sloodu# vwuhvvhv
3. ⢓⭠⑼# 㜔ཋὴῠ
ŖۿѿԺࢢȇۆज़͆ҙ؋܁ՁथÀѓѪڷͿəPeck (1969) ѓѪ, Matsuda(1997) ѓѪ ˣۆ ąॹق ۆॢ
Ò͜ۺۍêࢹѪęս࠘३Եںۋڌॢ३ԵۺѓѪۋ
ەɰ.
3.1 ဈ㤣⭌# 㜔ཋῠ
G Peck ⚠✌
PeckڹѿԺࢢȇĹ֨ज़͆ҙقьԦॠəथŒڿ ͳ(¬Ã)ęێ߹ؓ߹Ìʪ(ňÃ)ۆҼİεࣀ३؋܁Ձںथ Àॠٕɰ.
¬Ãá Ĺ Z ¡ Z ÞÎ â ć©
ß
ňÃá ćÎ à Æ ¼Áŋ Ï Z Ɓ Z ¶ÂÆ ŋ
¬ á ć¬Ã ňÃ
يşԴ, 쩂G : ɳڦܼ͟
H : ݓशϸڷͿҙࢢࢢȇŪۋ D : ࢢȇफ
P : ज़͆ۆफ c : ۾ͳ Ø : ǴҙυÁ
FS : ज़͆ۆ؋ۻڱ
¬Ã : ज़͆ҙقۚڌॠəथŒڿͳ ňà : ؒъۆێ߹ؓ߹Ìʪ
G Matsuda ⚠✌
Ԝۦॠܼۋ 1D(D=ࢢȇۆ फ) ҃ɰ ۚڹ ąڍقə
ۻॠܼۋܼؖज़͆ҙقۚڌॠəìڷͿ܃؋ॠٕڷ
϶, ۋ͠ॢąڍćনʽܼؖज़͆ҙĵܓߕۆÌʪÀ
ٚԜʼرݓəڿͳ҃ɰࡾϸ߿қॢ؋܁Ձںঝ҃ॣ
սەɰ.
- ࢹक़(H)Àࢢȇफ(D)҃ɰࢀąڍ(H>D)
¬Ãá ć© Ĺ Z Z
- ࢹक़(H)Àࢢȇफ(D)҃ɰۚڹąڍ(H<D)
¬Ãá ć© Ĺ Z ¡ Z
- ؋ۻڱ
¬ á ć¬Ã ÄÈ
يşԴ, ¬Ã : ज़͆ҙقۚڌॠəथŒڿͳ 쩂G G : ɳڦܼ͟
H : ݓशϸڷͿҙࢢࢢȇŪۋ
D : ࢢȇफ P : ज़͆ۆफ
B : ۋٰॠܼफ
ÄÈ : ज़͆ҙؒъÌʪ FS : ज़͆ۆ؋ۻڱ
3.2 ╣ㆣ㢿⑨⪏# 㔀㢧# 㢿⑨⭌# ὴῠ
ս࠘३Եںࣀॢ३ԵۺѓѪڹज़͆ҙقۚڌॠə
ܳڿͳںۋڌॠيؒъࣷĨşܵقŖäॢÌʪ/ڿͳ Ҽ, ࣷĨۿŖʪˣںԓ܁ॠيज़͆ۆ߯ՙ˃ƍق˰δ
३ɾؒъܓæقԴۆ؋܁Ձںêࢹॢɰ.
G ᚌḻ/㇈⊜⢻(Strength/Stress ratio)
ɰتॢࡾşۆĵ՚ؓͳ(ňÐ)قʂ३ՙՁࣷĨۆ֨ۚ
ڹMohr-Coulomb ࣷĨşܵقۆ३ő܁ʽɰČÀ܁ॠ ϸ؉͒֩ (1)ęÏۋशইʽɰ.
ňÎá ňƁƋâ ƉňÐ (1)
ؒъۆێ߹ؓ߹Ìʪ(ňƁƋ)ٮňÐقʂॢňÎۆşڐş (Ɖ)əÁÁ֩(2), (3)ęÏɰ.
Ilj1# 71# Vwuhqjwk0vwuhvv# udwlr# dqg# glvwulexwlrq# fkduw# ri# vwuhvv
Wdeoh# 41# Vrlo# surshuwlhv Xqlw# zhljkw#
+nQ2p6,
Ghirupdwlrq# prgxoxv#
+PSd,
Frkhvlrq#
+PSd,
Iulfwlrq# dqjoh
# +윿,
+을,
5613# 5/333 31;3# 68# 3159#
ňƁƋá ćÎ à Æ ¼Áv
ÏƁ 읆 ¶ÂÆ v
(2)
Ɖ á ćÎ à Æ ¼Áv Î â Æ ¼Áv
(3)
̚ॢ, Ìʪ/ڿͳҼ(Strength/Stress ratio)ə֩(4)ٮÏɰ.
Ìʪ/ڿͳҼ = ć ňÎ ňÎƑ
(4)
يşԴ, ňÎ : ࣷĨ֨߹ڿͳ ňÐ : ĵ՚ڿͳ Ɓ : ۾ͳ
v : ؒъ(Rock Mass)ۆυÁ
ňÎƑ: ܳرݕňÐقԴۆज़͆ۆÌʪ(Strength)
Ìʪ/ڿͳҼəࣷĨ֨ज़͆ҙқۆܳڿͳقʂॢؒъ ۆÌʪεशইॢìڷͿ, ݕॱՁࣷĨ(Progressive failure) ǣ ڿͳۻۋę܁(stress transfer progress)ںČͲॠيज़
ܼ͆ؖɳϸقԴۆथŒÌʪ/ڿͳҼ(average strength / stress ratio)À1.0 ۋॠͿʼϸज़͆ۻߕÀҝ؋܁ॠó
ʼə ìۋ϶, ज़͆ۆ ݓ՚ۺۍ ؋܁ں ڦॢ ؋ۻڱڹ
1.5 ۋԜںԐڌॠيآॢɰ(Hoek and Brown, 1980).
4. ᅇ⭜“⑯㑻ᑛ⪣# ⢓⭠⑼# ࿋㓫#
4.1 㢿⑨⮻྿# # ὴῠ
ٍ҆ĵəŖۿѿԺࢢȇۆज़͆ҙ҃ÌėѪقԴؒ
ъࠗقܳͿۺڌॠəÀؓ(Pre-stressing)ėѪܼ҇
࣡(SD 35, D25)εۋڌॢۻϸۿԜقԴۆۍۤѓ
֩ęPCÌٍԸںۋڌॢۙڮۤԜۆۍۤѓ֩ۺڌ
֨ज़͆ҙۆäʴՁںथÀॠČۙॠٕɰ.
३Ե֨ԐڌॢݓъНՁ࠘əێъۺۍÉںۺڌॠ ČۙĶǴʪͿфߏʪࢢȇԺć֨ۺڌʽԐͻε
Čॠي؉͒ۆTable 1ęÏۋۺڌॠٕɰ.
ս࠘३ԵϿʝτڹज़͆ҙۆäʴՁں҃ɰϼঝ ০ࣷ؊ॠşڦ३1ݓ҃ۦ(ջࡾν࣡, ҇࣡, Ìݓ҃) əԦ͜ॠٕČ, ս࠘३ԵѩڦəÀɠॢॢࢢȇĹڷ Ϳۍॢڿͳۆٖॳۋй࠘ݓ؍ʪࠑϸڹࢢȇĹ
फۆ3ѕۋԜ, ॠҙąćəࢢȇцɱقԴҙࢢࢢȇ ȭۋۆ2ѕۋԜ, ݓशϸūݓȭۋəߎɳҙقԴҙࢢ
50mͿԺ܁ॠٕɰ. 50mͿԺ܁ॢԐڮəĶǴۆąڍ
ŖۿѿԺࢢȇۆʂҙқۋࢢȇۓ,ĵҙێҙĵÂق ԴćনʼČەəìںъٖॠٕɰ.
३Ե॒ͿŔ͖ڹڮॢқ३Եࡑ˚ۍFLAC 2D ver.
7.0ںۋڌॠيMohr-Coulomb ࣷĨşܵقۆॢՙ Ձ३Եںսॱॠٕɰ.
êࢹĀęəज़͆फ, šۤͳѺজق˰͆ ज़͆ҙق
ǣࢍǣəܳڿͳԜεҼİॠٕČ, Ìʪ/ڿͳҼقۆ
ॢ؋ۻڱͿज़͆ҙۆ؋܁ՁںथÀॠٕɰ.
4.2 㢿⑨# ၇
ŖۿѿԺࢢȇۆज़͆ҙÀؓėѪܼۻϸۿԜ
ἰ㥅G ⸅㉘䉤≄㜄㉐G 䙸⢰G 㚉㻉ⵝⷉ㜄G ♤⪬G 䙸⢰⺴G ᵉ⓸䏭㉥G ⷴ䞈㜄G Ḵ䚐G 㜤Ạ <4 Ilj1# 91# Xquhlqirufhg0sulqflsdo# vwuhvv Ilj1# :1# Ixoo|# jurxwhg0sulqflsdo# vwuhvv Ilj1# ;1# Xqerqghg0sulqflsdo# vwuhvv#
Ilj1# <1# Xquhlqirufhg0sulqflsdo# vwuhvv Ilj1# 431# Ixoo|# jurxwhg0sulqflsdo# vwuhvv Ilj1# 441# Xqerqghg0sulqflsdo# vwuhvv#
Ilj1# 451# Lqfuhdvhg# frkhvlrq# 0# sulqflsdo# vwuhvv# +Xquhlqirufhg,
قۆॢ҇࣡ۍۤѓ֩ęۙڮۤԜقۆॢÌٍԸ
ۍۤѓ֩ۺڌ֨ज़͆ҙۆäʴՁںथÀॠČۙॢ
ц, ३ԵĀęε܁νॠϸɰڼęÏɰ.
Gज़͆फѺজق˰δۻϸۿфۙڮۤۍۤѓ֩
ۆäʴՁ
ٍ҆ĵقԴəࠑؓćսф҃Ìۦۍۤͳڹێ܁ॠ óॠČज़͆फقѺজεܳϸԴज़͆ҙ҃Ìۋػə
ąڍٮ҃Ì֨ۻϸۿфۙڮۤԜقԴۆज़͆
ܼÂҙқقԴ߯ՙܳڿͳۆьԦąॳںԕट҃ČÌ ʪ/ڿͳҼεࣀॢज़͆ҙ؋ۻڱںҼİॠٕɰ.
Fig. 68əज़͆फ3mۍąڍ, Fig. 911əज़͆फ
6mۍąڍۆज़ܼ͆ÂҙқقԴИ҃Ì, ۻϸۿ, ۙ ڮۤ֨ܳڿͳқपε҃يܵɰ.
ज़͆फ3m(Fig. 68)ε҃ϸИ҃Ì, ۻϸۿ, ۙ ڮۤ֨ज़ܼ֮͆ںşܵڷͿ߯ʂܳڿͳڹज़͆ѹ ϸڷͿÄսݒÀॠČ߯ՙܳڿͳڹÇՙॠəąॳ ں҃ۍɰ. ɰχ߯ʂܳڿͳۆąڍज़͆ܟ,ڍࠑѹҙ قԴۍۿݓ۾҃ɰۚڹÉںǣࢍǴəʚۋəज़͆
फۋܙ؉ԴࢢȇĹ֨ьԦʽѹϸҙ߯ʂܳڿͳ
҃ɰؒъۆࣷĨÌʪÀۚ؉սͶę܁ܼՙՁԜε
ąॹ॰ş˺ЛۍìڷͿࣺɳʽɰ.
؉͒Fig. 12əज़͆फ3m, И҃Ìۍąڍ, ۾ͳں
ݒÀ(4MPa)֨ࡈ३ԵॢĀęͿԴ߯ʂܳڿͳқपə
ज़͆ܟ,ڍࠑѹҙقԴ߯ʂεǣࢍǴČज़ܼ͆ؖҙ ͿÄսÇՙॠيज़ܼ͆ؖقԴ߯ՙÉںǣࢍǴČ
ەɰ.
؉͒Fig. 13, 14ə۾ͳݒÀۻ, ۆज़͆ҙՙՁ қपԜεǣࢍǴəʚؘقԴسśॢцٮÏۋ۾
ͳںݒÀ֨ࡈĹॢąڍəज़͆ѹϸҙقՙՁۋǣ
ࢍǣݓ؍əìں؎սەɰ.
ॢठ, ज़͆ۆ؋ۻڱ(थŒÌʪ/ڿͳҼ)ںݒÀ֨ࢅ
Ͳϸ۾ͳۋǣࣷĨÌʪεȭيآॠəʚ, ࣷĨÌʪ εȭۋəѓѪںۺڌॠČۙॠəąڍقəĵ՚ڿͳ (ňÐ)ںݒÀ֨ࡈآॠ϶؉͒Fig. 15, 16قज़͆फ3m, Àؓͳ200KNںۺڌ֨ۻϸۿԜٮۙڮۤԜ
قʂॢ҃Ìۦقۚڌॠə߹ͳқपε҃يܵɰ.
Ilj1# 461# Ruljlqdo# frqglwlrq# 0# sodvwlflw| Ilj1# 471# Lqfuhvhg# frkhvlrq# 0# sodvwlflw|
Ilj1# 481# Ixoo|# jurxwhg# 0# d{ldo# irufh Ilj1# 491# Xqerqghg# 0# d{ldo# irufh
Ilj1# 4:1# Ixoo|# jurxwhg# 0# d{ldo# irufh Ilj1# 4;1# Xqerqghg# 0# d{ldo# irufh
Ilj1# 4<1# Plqlpxp# sulqflsdo# vwuhvv# +SZ# 6# p, Ilj1# 531# Plqlpxp# sulqflsdo# vwuhvv# +SZ# 9# p,
ۻϸۿۍąڍ(Fig. 17)قəज़͆ܟ,ڍѹϸقԴχ
أ170KNۆ߹ͳۋۚڌʼ϶ज़ܼ͆ؖҙͿÄս߹
ͳڹই۹০ܶر˚əìں҇սەɰ. ъϸۙڮۤۍ
ąڍ(Fig. 18)قəߣşۚڌ֨ࢇÀؓͳ(200 KN)ۋ҃
ÌۦۻٍۤقèߝŒˣॠóۚڌʼČەəìں؎
սەɰ.
؉͒Fig. 17, 18ڹFig. 15, 16قԴǣࢍǶ߹ͳқप
ε҃ɰۙՃ০ǣࢍǶìڷͿۻϸۿ֨قəߣş
ۺڌ֨ࢇÀؓͳۋज़͆ҙܟ,ڍࠑѹҙقχ҇࣡ۆ
२҄ͳۍأ172KN ܁ʪχۚڌॠČज़ܼ֮͆ҙͿÄ սই۹০ܶر˚əъϸ, ۙڮۤۍąڍقə҃Ìۦ
ۻٍۤقèߝäۆێ܁ॢ߹ͳۋқपॠəìں؎
սەɰ.
؉͒Fig. 19, 20ڹज़͆फ3,6mۆąڍقʂ३И҃
ἰ㥅G ⸅㉘䉤≄㜄㉐G 䙸⢰G 㚉㻉ⵝⷉ㜄G ♤⪬G 䙸⢰⺴G ᵉ⓸䏭㉥G ⷴ䞈㜄G Ḵ䚐G 㜤Ạ <6 Ilj1# 541# Urfn# sloodu# vwuhqjwk# +sloodu# 6# p, Ilj1# 551# Urfn# sloodu# vwuhqjwk# +sloodu# 9# p,
Ilj1# 561# Vwuhqjwk2vwuhvv# udwlr# +SZ# 6# p, Ilj1# 571# Vwuhqjwk2vwuhvv# udwlr# +SZ# 9# p,
Ì, ۻϸۿ, ۙڮۤԜقԴज़͆ڦ࠘ѻ߯ՙܳڿ ͳۆқपεǣࢍǶìڷͿԴ, ज़͆ҙۻϸۿԜق ԴÀؓںॢąڍقəज़ܼ֮͆ҙəňÐۆݒÀÀࡾ
ݓ؍ڹìں؎սەڷ϶, ъϸۙڮۤԜقԴəĵ
՚ڿͳ(ňÐ)ۆ̤ॢݒÀεঝۍॣսەɰ. ˰͆Դ
ज़͆ҙۆࣷĨÌʪεȭۋşڦ३Դĵ՚ؓۋज़څॢ
ąڍقəۻϸۿѓ֩قҼ३ۙڮۤѓ֩ۋ҃ɰڮ νॢìڷͿࣺɳʽɰ.
̚ॢ, ؉͒Fig. 21, 22əज़͆फ3m, 6mقʂॢИ҃
Ì, ۻϸۿ, ۙڮۤ֨ĵ՚ؓۺڌق˰δज़͆ҙؒ
ъÌʪٮۆ ěćε ǣࢍǶ ìڷͿԴ, И҃Ì ф ۻϸ
ۿۆąڍज़͆ҙڅՙѻ߯ՙܳڿͳ(ňÐ)ۋäۆҼ
֦ॢÉں҃ۋǣۙڮۤۍąڍقəۋ˞ęҼİ֨
߯ՙܳڿͳۆݒÀتԜںঝۍॣսەɰ.
ज़͆फ 3, 6mقԴ ĵ՚ؓ ۚڌѓѪق ˰δ ڦ࠘ѻ
Ìʪ/ڿͳҼεǣࢍǶìۋ؉͒Fig. 23, 24ͿԴИ҃
Ìфۻϸۿ֨Ìʪ/ڿͳҼəäۆÏڹÉں҃ۋ əъϸۙڮۤۺڌ֨قəঝٍॢÌʪ/ڿͳҼۆݒ ÀتԜں҇սەɰ.
ɰχज़͆फ3mۆąڍقəۻϸۿԜقԴʪأ ÂۆÌʪ/ڿͳҼݒÀتԜں҇սەəʚ, ۋəۻϸ
ۿ֨ǣࢍǣə܁ҙޅۆڿͳݚܼইԜۋज़͆फ ۋܙڹěćͿɰՙԜթʼəĀęͿࣺɳʽɰ.
G šۤͳѺজق˰δज़͆ҙÌʪ/ڿͳҼѺজ ज़͆ҙ҃Ìۋػəąڍٮज़͆ҙ҃Ì֨ۻϸۿ
фۙڮۤԜقԴšۤͳںѺজ֨࢈˺Ìʪ/ڿ ͳҼεࣀॢज़͆ҙ؋܁ՁںҼİ, қԵॠٕɰ.
ۋεڦ३ज़͆फ(3m)ęࠑؓćս(0.5)əČ܁֨ࢅČ
šۤͳں100, 200, 300KNڷͿѺজ֨ࡎڷ϶, ŔĀę
ε؉͒Fig. 25, 26قǣࢍǴؽɰ.
И҃Ì, ۻϸۿ֨Ìʪ/ڿͳҼĀę(Fig. 25)ε҃
ϸۻϸۿ֨šۤͳݒÀقěćػۋИ҃Ì֨ٮ
ŔÉقەرࢀۋÀػóǣࢍǣəʚۋəۻցॢ
цٮÏۋۻϸۿ֨قəšۤͳۆݒÀق˰δ߯ՙ
ܳڿͳ(ňÐ)ۆݒÀÀࡾݓ؍ş˺Лۋɰ.
ъϸИ҃Ìфۙڮۤ֨Ìʪ/ڿͳҼĀę(Fig. 26) ε҃ϸИ҃Ì֨ٮҼİ֨ÀؓͳݒÀق˰δÌʪ/
ڿͳҼۆݒÀÀ̤ॠóǣࢍǣČەəìں؎ս
ەɰ.
5. # ᮫
ٍ҆ĵقԴəŖۿѿԺࢢȇۆज़͆ҙÀؓėѪܼ
ۻϸۿԜقۆॢ҇࣡(SD35, D25) ۍۤѓ֩ęۙ
ڮۤԜقۆॢPC ÌٍԸۍۤѓ֩ۺڌ֨ज़͆ҙ ۆäʴՁںथÀॠٕɰ.
(1) ҃Ìۦε ۻϸۿ ԜقԴ Àؓں ॢ ąڍقə
ज़͆ ܼ֮ҙۆ ĵ՚ڿͳ(ňÐ) ݒÀÀ ࡾݓ ؍ڷǣ,
ۙڮۤԜقԴəĵ՚ڿͳ(ňÐ)ۆ̤ॢݒÀε
ঝۍॣսەɰ. ˰͆Դज़͆ۆ؋ۻڱ(थŒÌʪ/
ڿͳҼ)ںݒÀ֨ࢅəѓѪܼؒъÌʪεȭۋə
ѓѪںۺڌॠČۙॠəąڍ, ҃Ìۦۆ܁ѓ֩
ڹۻϸۿѓ֩҃ɰĵ՚ڿͳ(ňÐ)ۆݒÀÀ҃ɰ
ϼঝॠóǣࢍǣəۙڮۤѓ֩ۋ҃ɰڮνॣì ڷͿࣺɳʽɰ.
(2) ज़͆फۋܙڹąڍقəۻϸۿ֨قʪأÂۆ
Ìʪ/ڿͳҼݒÀتԜں҇սەəʚ, ۋəۻϸ
ۿ֨ǣࢍǣə܁ҙޅۆڿͳݚܼইԜۋज़
͆फۋܙڹěćͿɰՙԜթʼəĀęͿࣺɳʽɰ.
(3) šۤͳѺজق˰δज़͆ҙÌʪ/ڿͳҼəۻϸۿ
ԜقԴəšۤͳݒÀقěćػۋИ҃Ì֨ٮ
ࢀۋÀػəʚۋəĵ՚ڿͳ(ňÐ)ۆݒÀÀйй ॠş ˺Лۋ϶, ۙڮۤ ԜقԴۆ Ìʪ/ڿͳҼə
И҃ÌԜٮҼİ֨šۤͳݒÀق˰δĵ՚ڿ ͳ(ňÐ)фÌʪ/ڿͳҼۆݒÀÀ̤ॠóǣࢍǣə
ìں؎սەɰ.
(4) ˰͆Դ, ज़͆फۆĀ܁ф҃Ìćনսς֨قə
ज़͆ҙۚڌॠܼęؒъÌʪۆԐۻҼİфࢢȇ
ĹտԴˣںϸн০êࢹॢۺ܁ॢ҃ÌėѪ ںԸ܁ॠيآʾìڷͿࣺɳʽɰ.
ٍ҆ĵə܃ॢʽۙΒٮս࠘३ԵقۆॢĀęεŖ äͿۋΘرܐڷдͿॳ֨ėܼۻϸۿфۙڮۤ
ԜقԴۆज़͆ҙԜՃćࠑۋज़څॠ϶, ŔĀęεц
ڷͿٍ҆ĵٮۆҼİқԵф҃ÌėѪق˰δज़͆
ҙۆۺ܁ॢäʴՁࣷ؊ˣۆٍĵÀսॱʼر܋آ
ॣìۋɰ.
⾃ါẃ㤗# (References)
1. Hoek, E., Brown E.T. (1980), “Underground excavation in rock”, Institution of Mining and Metallurgy.
2. Itasca Consulting Group, Inc. (2011), Fast Lagrangian Analysis of Continua, Ver. 7.0, Itasca Consulting Group, Minneapolis, Minnesota, USA.
3. Jang, B. S. (2006), “Study on the Estimation of the Behaviors of the Pillar between Twin Tunnels” Doctorate Thesis, Hongik University, Korea.
4. Kamimura, M. (2002), “Discussion on the behaviors of parallel tunnel with a small clearance”, Proc. of the 28th ITA General Assembly and World Tunnel Congress, pp.898-906.
5. Kim, D. H., Park, J. K., Kim, Y. G., and Lee, D. H. (2003), “A Study on the Estimation of the Design and Stability of Large Parallel Tunnels”, Korea Society for Rock Mechanics Annual Spring Conference Collection of Dissertations, pp.51-66.
6. Kim, P. K. and Kim, J. W. (2013), “Scale Model Studies for Stability Estimation of Twin Tunnels with Small Clearance”, Tunnel
& Underground Space, Vol.23, No.2, pp.130-140.
7. Matsuda, T., Toyosato, E., Igarashi, M., Nashimoto, Y., and Sugiyima, T. (1997), “A study on design methods for twin tunnels constructed by the single drift and central pier method”, Proceedings of Studies on tunnel Engineering.
8. Matsuda, T., Terada, K., Igarashi, M., and Miura, K. (1998),
“Ground behavior and settlement control of twin tunnels in soil ground”, Tunnels and Metropolises, Vol.2, pp.1193-1198.
9. Peck, R.B. (1969), “Deep excavations and tunneling in soft ground”, Proc. 7th ICSMFE, Mexico, State-of-the-art Report, pp.225-290 10. Sin, Y. W. and Kim, Y. G. (2010), “Review of Mechanical Behaviors
of Pillar in Large Parallel Tunnel”, Tunnel & Underground Space, Vol.20, No.3, pp.131-144.
Received : October 10th, 2013 Revised : November 19th, 2013 Accepted : December 4th, 2013
