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Keywords: borehole
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Proceedings Papers
Rehabilitating and Strengthening a Leaked Underground Penstock Using Permanent Strand Ground Anchors at a Hydropower Plant in Laos
Available to Purchase
Paper presented at the ISRM Regional Symposium - 12th Asian Rock Mechanics Symposium, November 22–26, 2022
Paper Number: ISRM-ARMS12-2022-008
... the anchors de- and re-stressable. For an easy, safe and reliable control of the anchor forces during tensioning, several strands were equipped with DYNA Force load sensors. To ensure the quality of construction, UTRACON GROUP used borehole endoscope to check groundwater, carter problem in borehole during...
Proceedings Papers
Numerical Simulation of Fracturing Process Around Boreholes Under Static-Dynamic Loads by Coupling Two FEM Models and Damage Mechanics
Available to Purchase
Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-162
... Abstract The fracture propagation process around the borehole under the static-dynamic loading is simulated by considering the inhomogeneity of rock material and statistic damage mechanics, and coupling COMSOL with Matlab. For some factors such as inhomogeneity of strength, layout of holes...
Proceedings Papers
Development and Application of a Three-Dimensional GPGPU-Parallelized FDEM for Modelling Rock Fragmentation by Blast
Available to Purchase
Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-250
... in detail in authors’ various former publications. The GPGPU-parallelized HFDEM3D is then applied to model the rock fracture and fragmentation process by the detonation of a single borehole and simultaneous and consecutive detonations of multiple boreholes. 1. Introduction Blasting has been widely...
Proceedings Papers
Cause Analysis and Control Measures for Roadway Bursting Caused by Mining-Induced Tremors of Hard Roof-A Case Study of the Inner Mongolia Coalfield, China
Available to Purchase
Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-267
...-rich rock plate tectonics reservoir geomechanics rock type environmental science 861 mining-induced tremor geologist society iop publishing iop conf geological subdiscipline sedimentary rock structural geology reservoir characterization conference liability lw3102 strata borehole...
Proceedings Papers
Airborne Geoscanning as a Site Investigation Tool in Large-Scale Tunnelling Projects: A Synthesis of Case Studies from Norway and India
Available to PurchaseAnne Have Rasmussen, Giselle Mercedes Linares, Craig William Christensen, Sanjeev Malik, Guro Huun Skurdal, Andreas Aspmo Pfaffhuber
Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-338
... construction. They are one of the major reasons why 90% of transportation infrastructure projects globally exceed their budgeted cost and why tunnelling project on average exceed their expected costs by 50% [1]. While traditional borehole investigation techniques help mitigate uncertainty in ground conditions...
Proceedings Papers
Modified Methods for Relative Density of Deep Covered Sand Based on Standard Penetration Blow Number
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-320
... that the relative density becomes smaller as the depth of the soil layer is more deeply buried. After comparative analysis, the calculation results of the method in this paper are very close to the in-situ test of boreholes. It solves the problem of the difficulty in sampling deep-covered sandy soil in its original...
Proceedings Papers
Analysis of Rockslide and Engineering Slide via Integration Between Rock Mechanical and Geophysical Parameters
Available to Purchase
Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-352
... introduce a new approach that involves the empirical integration of rock mechanical and geophysical parameters. Our novel approach provides an efficient alternative to the borehole tests for the estimation of rock mechanical parameters, such as the rock mass integrity coefficient ( Kv ). This approach gives...
Proceedings Papers
Sampling and Distribution Parameter Analysis for Estimating Three-Dimensional Fracture Orientation Distributions from a Circular Sampling Window
Available to Purchase
Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-403
... the size of fractures and boreholes as a significant modification of the Terzaghi method [5]. Fouché and Diebolt proposed an improved Terzaghi method, by employing the intersection angle and sample size as the parameters to correct the sampling bias [6]. Recently, Zhang et al. proposed a geometric...
Proceedings Papers
Experimental Investigation on the Influencing Factors of the Thermal Response Test Using Actively Heated Fiber Optics
Available to Purchase
Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-448
... and designing boreholes heat exchanges. However, it is still challenging to collect accurate data about strata thermal conductivity. With the application of copper mesh heated optical cable, actively heated fiber (CMCH), optics based thermal response test (ATRT) offers the possibility of fast and accurate...
Proceedings Papers
In Situ Stress Test Device Applied to Boreholes with a Small Aperture and Stress Field Inversion Technique in Coal Mines
Available to Purchase
Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-594
... of hydraulic fracturing, a quick-test device used in boreholes with an aperture of 31mm was developed to measure the in situ stress. An inversion software was programmed based on the multiple linear regression method to obtain the stress field. Lastly, three engineering cases were presented to introduce...
Proceedings Papers
Borehole Contraction and Depth Analysis Based on Extended SMP Criterion
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-578
... Abstract The excavation of vertical boreholes is involved in several geotechnical engineering constructions. Earth pressure in the soil is released during the drilling process, resulting in soil stress redistribution and borehole contraction along the excavation surface. The stress...
Proceedings Papers
Influence of Heterogeneity, Natural Fracture, and Bedding Plane on Fracture Propagation in the Vicinity of a Borehole
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-563
... fracture and bedding planes on hydraulic fracture propagation, and few studies have explored the fracture propagation in the vicinity of a borehole. Therefore, the present paper intends to simulate the fracture propagation in the vicinity of a borehole under the joint impact of heterogeneity, natural...
Proceedings Papers
Inversion Analysis of the Complex Initial Stress Field of an Extra-Long Tunnel Based on "Overlapping Partition-Integration"
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-638
... stress. geologist artificial intelligence geological subdiscipline mathematics of computing reservoir geomechanics conference geology borehole machine learning highway tunnel environmental science 861 tunnel reservoir characterization society iop publishing iop conf extra-long tunnel...
Proceedings Papers
Normalization Processing and Research of Multi-Field Data in Reservoir Seepage Investigation
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-625
.... On the other hand, after decades of operation of the reservoir, some of the grouting curtains are gradually aging, which results in an increased leakage and making the dam in an unfavorable state. geologist leakage eigenvalue investigation borehole society iop publishing iop conf reliability...
Proceedings Papers
A New Analysis Model for Borehole Stability in Gas Drilling
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-659
... drilling cannot provide enough support force for the rock around borehole as that of conventional overbalanced drilling. Due to the combination influence of engineering and geological factors, the borehole rock is prone to instability during gas drilling, which can lead to rock blocks falling from the well...
Proceedings Papers
The Principle, Evolution and Key Technical Problems of Large Underground Water-Sealed Storage Caverns for Oil/Gas
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Paper presented at the ISRM Regional Symposium - 11th Asian Rock Mechanics Symposium, October 21–25, 2021
Paper Number: ISRM-ARMS11-2021-661
... storage cavern environmental science 861 reservoir characterization underground water-sealed storage cavern conference tank borehole sedimentary rock natural gas storage cavern underground storage cavern construction geological subdiscipline society iop publishing iop conf underground space...
Proceedings Papers
Mechanical Properties of Rocks of the Jurong Series
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Paper presented at the ISRM International Symposium - 10th Asian Rock Mechanics Symposium, October 29–November 3, 2018
Paper Number: ISRM-ARMS10-2018-009
... from the same run of core. structural geology isrm international symposium specimen conductivity reservoir geomechanics Singapore sandstone Reservoir Characterization strength median value asian rock mechanics symposium 29 Upstream Oil & Gas borehole jurong rock deep...
Proceedings Papers
Precise Estimation of Geoformation Structures While Drilling
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Paper presented at the ISRM International Symposium - 10th Asian Rock Mechanics Symposium, October 29–November 3, 2018
Paper Number: ISRM-ARMS10-2018-028
... (GD), resistivity, magnetics, electromagnetic, seismic wave, seismic CT, gravity, sonic and ultrasonic methods have been extensively applied to the identification of strata interfaces at initial stage of geologic prospecting (1). In terms of technology, borehole penetrating test and coring...
Proceedings Papers
Hydro-Mechanical-Chemical (HMC) Simulation of Groundwater REcovery Experiment in Tunnel (GREET)
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Paper presented at the ISRM International Symposium - 10th Asian Rock Mechanics Symposium, October 29–November 3, 2018
Paper Number: ISRM-ARMS10-2018-037
... crystalline rock at 500m depth below ground surface and has a floodable volume of approx. 900m 3 . Information of fracture distribution has been obtained by borehole investigation and mapping of gallery walls. The change of hydraulic pressure, hydrochemical condition and rock deformation have been monitored...
Proceedings Papers
Application of Probabilistic Assessment on Rock Mass Variability for Identifying Potential Site for Cavern Development
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Paper presented at the ISRM International Symposium - 10th Asian Rock Mechanics Symposium, October 29–November 3, 2018
Paper Number: ISRM-ARMS10-2018-078
...)) to investigate and identify the country's deep geology characteristics and identify sites suitable for such developments to support URA's development of the underground masterplan (Lim, 2018). reserves evaluation isrm international symposium assessment US government cavern borehole investigation...
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