Monitoring of Rock Slope Stability by the use of high Sensitive Tiltmeter

利用高灵敏度倾斜仪监测岩坡稳定性

• 批准号: 12555283
• 负责人: KANEKO Katsuhiko
• 金额: $ 5.38万
• 依托单位: HOKKAIDO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12555283/
• 关键词: Stability monitoring; Rock slope; Tiltmeter; Slope failure; Regional stress; Rock stress; Open cut mine; Limestone; 残壁; 露天採掘; 地球潮汐

Stability monitoring of rock slope is important for safety working of open cut mine.In this research project, a monitoring system of rock slope stability by the use of high sensitive tiltmeters has been proposed.(1) High sensitive tiltmeters were installed in a limestone mine and long term measurement has been performed. Analyzing the time series of tilt in rock mass, it is clarified that the cover rock of the slope is moving to downward and this moving is caused by the frictional sliding on the geological discontinuity between cover rock and base rock. From this result, it is confirmed that high sensitive tiltmeter is useful to monitor the rock slope stability.(2) A method to estimate the elastic moduli of rock mass using the earth moving as loading source has been proposed. By applying it to Shiriya mine, Young modulus and Poiison's ratio of rock mass in the present field were estimated to be lOGPa and 0.1, respectively.(3) A scheme to estimate the global stress state from the local stress state evaluated by the field stress measurement has been proposed. By applying it to Torigatayama mine, it is made clear that, in this region, the stress state induced by the horizontal movement of the upper crust is nearly uniaxial compression.

岩质边坡的稳定性监测对于露天矿的安全作业具有重要意义。本研究项目提出了一种利用高灵敏倾斜仪进行岩质边坡稳定性监测的系统。(1)在某石灰岩矿井中安装了高灵敏倾斜仪。并进行了长期测量。通过对岩体倾斜时间序列的分析，明确边坡的盖层岩体向下移动，这种移动是由盖层岩与基岩之间的地质间断面的摩擦滑动引起的。这一结果证实了高灵敏度倾斜仪对于岩质边坡稳定性监测的有用性。(2)提出了一种以土方移动为加载源估算岩体弹性模量的方法。将其应用于尻谷矿区，估算出现场岩体的杨氏模量为lOGPa，泊松比为0.1。(3)根据现场应力评价的局部应力状态估计全局应力状态的方案。已提出测量。将其应用到鸟形山矿区，表明该地区上地壳水平运动引起的应力状态接近单轴压缩。

项目成果

高橋弘 他: "実規模のディスクカツターを用いた岩石破砕に関する実験的研究"応用力学論文集. 3. 656-662 (2000)

Hiroshi Takahashi 等人：“使用全尺寸圆盘铣刀破碎岩石的实验研究”应用力学杂志，3. 656-662 (2000)。

金子勝比古 他: "鳥形山地域の広域的応力状態の推定"資源と素材. 116・7. 572-576 (2000)

Katsuhiko Kaneko 等人：“鸟形山地区广域应力状态的估计”资源和材料 116・7（2000 年）。

K. Kaneko et al.: "Estimation of global stress state in Torigatayama region"J. of M.M.I.J.. 116(7). 572-576 (2000)

K. Kaneko 等：“鸟形山地区全球应力状态的估计”J.

Y. Obara, N. Nakamura, K. Kaneko: "Measurement of local stress and estimation of regional stress to assess the stability of rock slope at an open pit mine"Int. J. Rock Mechanics & Mining Science. 37. 1211-1221 (2000)

Y. Obara、N. Nakamura、K. Kaneko：“局部应力的测量和区域应力的估计，以评估露天矿岩石边坡的稳定性”Int。

M.Kato, S.Sanoki A.Miyagi, M.Takahashi, K.Kaneko: "Anisotropic permeability of granite"Pyoc. Korea/Japan Joint Symp. on Rock Mech.. 1(印刷中). (2002)

M.Kato、S.Sanoki A.Miyagi、M.Takahashi、K.Kaneko：“花岗岩的各向异性渗透性”Pyoc。韩国/日本岩石力学联合 Symp.1（印刷中）。