隧道建设
隧道建設
수도건설
TUNNEL CONSTRUCTION
2014年
z1期
141-144
,共4页
钻炸损伤%三维应力再分配%隧道塑性区
鑽炸損傷%三維應力再分配%隧道塑性區
찬작손상%삼유응력재분배%수도소성구
blasting damage%three-dimensional stress redistribution%plasticized zone in tunneling
针对钻炸隧道周围损伤区域之工程特性进行探讨，利用三维数值分析软件FLAC 3 D进行模式建置与数值模拟。首先就隧道假设没有损伤之情况模拟轮进开挖，针对三维应力再分配及塑性区发展等进行探讨；接着模拟隧道钻炸开挖产生损伤情况，再将此2种情况进行分析对比，最后归纳汇整出钻炸损伤对隧道应力变形、塑性区之发展影响。
針對鑽炸隧道週圍損傷區域之工程特性進行探討，利用三維數值分析軟件FLAC 3 D進行模式建置與數值模擬。首先就隧道假設沒有損傷之情況模擬輪進開挖，針對三維應力再分配及塑性區髮展等進行探討；接著模擬隧道鑽炸開挖產生損傷情況，再將此2種情況進行分析對比，最後歸納彙整齣鑽炸損傷對隧道應力變形、塑性區之髮展影響。
침대찬작수도주위손상구역지공정특성진행탐토，이용삼유수치분석연건FLAC 3 D진행모식건치여수치모의。수선취수도가설몰유손상지정황모의륜진개알，침대삼유응력재분배급소성구발전등진행탐토；접착모의수도찬작개알산생손상정황，재장차2충정황진행분석대비，최후귀납회정출찬작손상대수도응력변형、소성구지발전영향。
This research focuses on the engineering characterization of plasticized zone in tunneling due to blasting dam-age.Simulation model is established and numerical simulation is made by means of three-dimensional numerical software FLAC 3D.Firstly,the three-dimensional stress redistribution and plasticized zone development are analyzed,assuming no blasting damage;Then,blasting damage is introduced;Finally,comparison and contrast is made between the simula-tion result of stress redistribution and plasticized zone development under non-damage condition and that under damage condition,and the influence of the blasting damage on the stress redistribution and plasticized zone development is sum-marized.
