企业科技与发展
企業科技與髮展
기업과기여발전
ENTERPRISE SCIENCE AND TECHNOLOGY & DEVELOPMENT
2013年
3期
14-16
,共3页
地下洞室开挖%卸荷松弛区%细观损伤力学%动态模拟
地下洞室開挖%卸荷鬆弛區%細觀損傷力學%動態模擬
지하동실개알%사하송이구%세관손상역학%동태모의
the digging of underground cavern%unloading and relaxation zone%meso-damage mechanics%dynamic simu-lation
卸荷松弛是大型地下洞室开挖过程中的常见现象,在临空面形成的围岩松弛区给地下洞室的稳定带来极为不利的影响.文章基于细观损伤力学的相关理论,对岩体开挖过程进行动态数值模拟,提出了预测地下洞室松弛区演化过程的数值方法,为合理地评价地下洞室围岩的稳定性提供科学的依据.
卸荷鬆弛是大型地下洞室開挖過程中的常見現象,在臨空麵形成的圍巖鬆弛區給地下洞室的穩定帶來極為不利的影響.文章基于細觀損傷力學的相關理論,對巖體開挖過程進行動態數值模擬,提齣瞭預測地下洞室鬆弛區縯化過程的數值方法,為閤理地評價地下洞室圍巖的穩定性提供科學的依據.
사하송이시대형지하동실개알과정중적상견현상,재림공면형성적위암송이구급지하동실적은정대래겁위불리적영향.문장기우세관손상역학적상관이론,대암체개알과정진행동태수치모의,제출료예측지하동실송이구연화과정적수치방법,위합리지평개지하동실위암적은정성제공과학적의거.
Unloading and relaxation is a common phenomenon when digging a huge underground cavern. The surrounding rock relaxation zone formed at air face has adverse influence on the stability of the underground cavern. Based on relevant theories of meso-damage mechanics, the paper simulates the dynamic value during the digging of rock mass and suggests numerical method that predicts the evolution of the relaxation zone of the underground cavern to offer scientific grounds for the proper evaluation of the stability of the cavern.
