CAJ | 학술논문

由于软岩组成的复杂性和工程的严重危害性,使其成为岩土工程领域最为复杂的前沿课题之一。通过对三元隧道中的泥岩进行了常规三轴压缩试验研究,分析了泥岩的强度、变形特性及其能量特性。低围压下泥岩的ε3~ε1关系曲线呈上凹型;高围压下,呈下凹型。并且泥岩试样的侧向变形对围压的敏感程度大于轴向变形。试样破坏应变能随着围压的增大而增加;实验机对试样所做的功大于试样破坏时实际吸收的能量,这主要因为试样侧向膨胀对液压油做功而持续释放能量,使得实验机对试样所做的功大部分用于对液压油做功。该研究对与泥岩相关岩土工程的设计和施工有一定的理论和借鉴作用。
유우연암조성적복잡성화공정적엄중위해성,사기성위암토공정영역최위복잡적전연과제지일。통과대삼원수도중적니암진행료상규삼축압축시험연구,분석료니암적강도、변형특성급기능량특성。저위압하니암적ε3~ε1관계곡선정상요형;고위압하,정하요형。병차니암시양적측향변형대위압적민감정도대우축향변형。시양파배응변능수착위압적증대이증가;실험궤대시양소주적공대우시양파배시실제흡수적능량,저주요인위시양측향팽창대액압유주공이지속석방능량,사득실험궤대시양소주적공대부분용우대액압유주공。해연구대여니암상관암토공정적설계화시공유일정적이론화차감작용。
The soft rock has become one of most complex advanced topics in the field of geotechnical engineering because of the complexity of the composition and harmful effects on engineerings. Based on the triaxial test results under different confining pressures for Sanyuan turmel, the strength, deformation and failure features, and energy properties of the mud-stone are analyzed. The test results show that under low confining pressure, the e3 - el relation curve of the mudstone would appear to be up-concave, and under high confining pressure, it would appear to be down-concave. The radial de- formation of the mudstone sample on confining pressure is higher than its axial deformation. The failure strain energy of the sample increases linearly as confining pressure increases, the work done by the test machine in the mudstone is more than its energy absorbed actually when it failures, which is due to that the energy released continually by the radial defor-mation of the mudstone sample is mostly applied in the acting to the hydraulic oil. The study results have a certain refer-ence to the design and construction of related geotechnical engineerings.