MONITORING SYSTEMS AND PREVENTION TECHNOLOGIES FOR DEEP UNDERGROUND ENVIRONMENT

深层地下环境监测系统及防护技术

基本信息

批准号：
12305068
负责人：
SAITO Toshiaki
金额：
$ 23.46万
依托单位：
Kyoto University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A)
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2002
项目状态：
已结题

项目摘要

In this project, several pieces of research were conducted to the problem of underground environment, and the following results were obtained. First, in order to estimate the behavior of a deep underground structure, propagation properties of P wave which transmits through a rock fracture were investigated, and it was cleared that the RMS amplitude of the P wave are directly proportional to the contact area of the rock fracture and this relation is useful to estimate the shear process of a rock fracture. Moreover, an automatic AE measurement system was developed and the surrounding rock mass behavior was evaluated at the construction site of an underground power station. Second, in order to develop a monitoring system for the underground environment, geostatistics was applied to evaluate the distribution of groundwater level around a dam site and the rock properties beyond a tunnel face at a tunnel construction site using a TBM, and it was concluded that geostatistics approach is very … More useful for such the evaluation. Moreover, a precise measurement of ultrasonic propagation using a laser Doppler vibrometer was carried out as a fundamental research for the Inspection by Reyleigh wave and the nondestructive inspection by ultrasonic wave, and correct ultrasonic velocity-dispersion curves were obtained. The applicability of the velocity-dispersion curve was also discussed. Furthermore, precise geophysical investigation technologies using resistivity, elastic wave, very precise tilt-meter, etc. were developed, and they were applied to the investigation of fractured underground structure. Third, in order to develop a technology which makes a toxic substance harmless and prevents the toxic substance diffusing/permeating, the deviation from the cube law of fracture permeability which governs the migration of substances in underground was investigated. Moreover, relating to geological disposal of high-level-radioactive-wastes, a numerical analysis for the groundwater flow under the coast seabed was performed and the movement of the boundary between fresh water and salt water was clarified. Furthermore, a numerical analysis method was proposed for the process of electrokinetic soil remediation to the argillaceous foundation polluted with heavy metal, and the promotion effect of the remediation with the hydraulic gradient was clarified. On the other hand, the effect of dynamic grouting method to a low permeable rock mass was discussed theoretically, and a rational method to apply this method was proposed. Less

在该项目中，进行了几项研究，以解决地下环境问题，并获得了以下结果。首先，为了估计深层结构的行为，研究了通过岩石裂缝传输的P波的传播特性，并清除了P波的RMS放大器直接与岩石裂缝的接触区域成正比，并且这种关系可用于估算岩石薄片的剪切过程。此外，开发了自动AE测量系统，并在基础电站的建筑工地评估了周围的质量行为。其次，为了开发针对基础环境的监测系统，使用TBM来评估地上的地统计学来评估隧道施工现场的隧道面孔周围的地下水水平的分布，并得出结论，地球统计学方法非常有用……对此类评估更有用。此外，获得了使用激光多普勒振动对超声传播进行的精确测量，作为对雷伊利波的检查的基础研究，并获得了超声波波和正确的超声速度速度 - 分散曲线检查的基础研究。还讨论了速度分散曲线的适用性。此外，开发了使用电阻，弹性波，非常精确的倾斜仪等精确的地球物理研究技术，并将其应用于破裂的地下结构的投资。第三，为了开发一种使有毒物质无害并防止有毒物质扩散/渗透的技术，研究了研究地下物质迁移的裂缝渗透性法则。此外，与高水平 - 放射性垃圾的地质处置有关，进行了海岸海底下的地下水流量的数值分析，并阐明了淡水和盐水之间边界的运动。此外，提出了一种数值分析方法，用于对用重金属污染的电子土壤修复过程进行电子土壤修复过程，并阐明了用水解梯度进行补救的促进效应。另一方面，讨论了动态灌浆方法对低渗透岩体质量的影响，并提出了采用这种方法的合理方法。较少的