Development of fracture sealing technique in deep underground

地下深部裂缝封堵技术进展

• 批准号: 13450416
• 负责人: AOKI Kenji
• 金额: $ 7.42万
• 依托单位: Kyoto University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13450416/
• 关键词: jointed rock mass; dynamic grouting; cross-hole hydraulic test; deep underground; grouting effect; 深部地下水環境; シーリング; 低透水性岩盤; 微小亀裂; グラウト注入メカニズム; 人工亀裂模型

This study suggests an efficient sealing system for low permeable rock mass, which is one of the most important required technologies for the geological disposal of high-level radioactive waste. The following three subjects are mainly discussed inthis study ;(1)Prediction method of geological condition in deep underground.(2)Evaluation method of hydro-geological structure in deep underground.(3)Effective and efficient grouting technique for low-permeable rock mass in deep underground.For the subject (1), The geostatistical prediction and evaluation method of geological condition is developed on the\basis of the new data acquirement technique such as intelligent TBM, reflection tomography, etc. For the subject (2), a new imaging method for hydro-geological structure in rock mass is developed in order to detect heterogeneous groundwater flow path, which strongly governs the hydraulic behavior of EDZ (excavation disturbed zone) around rock caverns, using the data from cross-hole hydraulic … More test. For the subject (3), several laboratory and field tests on dynamic, grouting were carried out in, order to grasp the effect of dynamic grouting. A theoretical model to explain the mechanism of grout penetration is proposed for evaluating the effect of dynamic grouting and determining the optimum specifications. Furthermore, the results of these tests are analyzed using the proposed theoretical model, and then the applicability of the proposed model is sufficiently verified and the effect of dynamic injection is evaluated quantitatively.Thus, a rational fracture sealing' system for low-permeable rock mass, which allows us to evaluate heterogeneous groundwater flow paths sufficiently and then to seal them sufficiently, is constructed on the basis of the above-mentioned examination. This system is expected to contribute to the research. and development of flow barrier system of HLW repository, and the realization of high-pressure gas storage caverns such as LPG storage cavern, CAES G/T, etc. Less

该研究提出了一种有效的低渗透岩体密封系统，这是高放废物地质处置的最重要的技术要求之一。本文主要研究了以下三个方面的问题：（1）地下深部地质条件预测方法。（2）地下深层水文地质结构评价方法。（3）深部低渗透岩体的高效注浆技术对于课题（1），基于智能TBM、反射波层析成像等新的数据采集技术，发展了地质统计学的地质条件预测与评价方法;对于课题（2），提出了一种新的岩体水文地质结构成像方法，以探测对EDZ水力特性有强烈控制作用的非均匀地下水流路径（开挖扰动区）周围的岩石洞穴，使用跨孔水力数据 ...更多信息 test.针对课题（3），进行了多次室内和现场动力灌浆试验，以掌握动力灌浆的效果。提出了一个解释浆液渗透机理的理论模型，为评价动力灌浆的效果和确定最佳的灌浆工艺参数提供了理论依据。在此基础上，利用所提出的理论模型对试验结果进行了分析，充分验证了所提出的模型的适用性，并对动态注水效果进行了定量评价，从而建立了一种合理的低渗透岩体裂隙封堵系统，使我们能够充分评价非均质地下水流通道并对其进行充分封堵。是在上述检查的基础上建立的。希望该系统能对研究有所贡献。高放废物处置库流动屏障系统的开发，以及液化石油气储气洞库、CAES G/T等高压储气洞库的实现。Less

项目成果

脇田伸吾, 伊達健介, 山本拓治, 水戸義忠, 青木謙治: "低透水性岩盤における動的注入工法の基礎的検討"第32回岩盤力学に関するシンポジウム講演論文集. 197-202 (2003)

Shingo Wakita，Kensuke Date，Takuji Yamamoto，Yoshitada Mito，Kenji Aoki：“低渗透岩石动态注入方法的基础研究”第32届岩石力学研讨会论文集197-202（2003）。

伊達健介, 山本拓治, 粂川政則, 大場康信, 青木謙治: "低透水性岩盤における動的注入工法の適用結果"第11回岩の力学シンポジウム論文集. G01. 1-6 (2002)

Kensuke Date、Takuji Yamamoto、Masanori Kumekawa、Yasunobu Ohba、Kenji Aoki：“动态注入方法在低渗透岩石中的应用结果”第 11 届岩石力学研讨会论文集 G01（2002 年）。

Kensuke Date, Takuji Yamamoto, Masanori Kumekawa, Yasunobu Oba, Kenji Aoki: "Application of dynamic grouting system to rock mass with ow permeability"Proc. of the 11th Japan National Symposium for Rock Mechani. GO1. pp1-pp6 (2002)

Kensuke Date、Takuji Yamamoto、Masanori Kumekawa、Yasunobu Oba、Kenji Aoki：“动态注浆系统在低渗透性岩体中的应用”Proc。

青木 謙治他: "Evaluation of dynamic grouting effect for Low-permeable rock"Proceedings of the South Africa institute of mining and metallurgy JOHNNESBURG 2003. 39-43 (2003)

Kenji Aoki 等：“低渗透岩石动态注浆效果评估”南非矿冶研究所论文集 JOHNNESBURG 2003. 39-43 (2003)

青木謙治, 水戸義忠, 山本拓治, 伊達健介, 脇田伸吾: "Evaluation of dynamic grouting effect for Low-permeable rock"Proceedings of the South Africa institute of mining and metallurgy JOHNNESBURG 2003. 39-43 (2003)

Kenji Aoki、Yoshitada Mito、Takuji Yamamoto、Kensuke Date、Shingo Wakita：“低渗透岩石动态注浆效果评估”南非矿冶研究所论文集 JOHNNESBURG 2003. 39-43 (2003)