| 李天义,赵子仪,吴磊.水压作用下单裂隙类岩试件破坏模式与规律研究[J].南华大学学报(自然科学版),2024,(5):50~57.[LI Tianyi,ZHAO Ziyi,WU Lei.Study on the Damage Mode and Law of Single-fissure Rock Specimens Under Hydraulic Pressure[J].Journal of University of South China(Science and Technology),2024,(5):50~57.] |
| 水压作用下单裂隙类岩试件破坏模式与规律研究 |
| Study on the Damage Mode and Law of Single-fissure Rock Specimens Under Hydraulic Pressure |
| 投稿时间：2024-03-12 |
| DOI： |
| 中文关键词: 裂隙水压 节理岩体 破裂模式 裂隙倾角 |
| 英文关键词:fracture water pressure jointed rock mass fracture pattern fracture dipangle |
| 基金项目:湖南省教育厅重点项目(21A0272) |
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| 中文摘要: |
| 在地下工程中,裂隙水严重影响岩体的力学特性,从而影响富水地区地下工程的稳定性。本文研制了一种水压供给装置,开展了7种裂隙倾角类岩试件在裂隙水压下的单轴压缩试验。结果表明:在裂隙水压下,随着裂隙倾角的增大,初始裂纹长度线性减小,且起裂点由裂隙中部移至尖端,起裂应力呈先减后增趋势,并在30°出现应力最小值,张拉破坏效应增强;随着裂隙水压增加,初始裂纹长度和峰值强度呈增加趋势,起裂时间、起裂应力和起裂角度减小,张拉破坏区增大。 |
| 英文摘要: |
| In underground engineering, fissure water seriously affects the mechanical properties of rock bodies, thus affecting the stability of underground engineering in water-rich areas. In this paper, a water pressure supply device was developed to carry out uniaxial compression test of seven kinds of fissure inclination rock specimens under fissure water pressure. The results show that:under the fissure water pressure, with the increase of fissure inclination angle, the initial crack length decreases linearly, and the crack initiation point is moved from the middle of the fissure to the tip, the crack initiation stress shows a trend of decreasing and then increasing, and there is a stress minimum at 30°, and the tension destructive effect is strengthened; with the increase of the fissure water pressure, the initial crack length and the peak strength show a trend of increasing, and the time of crack initiation, the crack initiation stress, and the crack initiation angle decrease, and the tension destructive zone is increased. |
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