Determination of the Basic Friction Angle of Rock Surfaces by Tilt Tests

Jang, Hyun-Sic; Zhang, Qingzhao; Kang, Seong-Seung; Jang, Bo-An

doi:10.1007/s00603-017-1388-7

Cited by 24 publications

(12 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Taking into account the large opening and the morphological characteristics of the potential sliding surfaces, the basic friction angle was prudently considered in the stability tests, which, in the absence of experimental data and analogy with similar lithologies [34] was deemed to be equal to 30 • .…”

Section: Pre-failure Analysismentioning

confidence: 99%

Reliability and Uncertainties of the Analysis of an Unstable Rock Slope Performed on RPAS Digital Outcrop Models: The Case of the Gallivaggio Landslide (Western Alps, Italy)

2020

View full text Add to dashboard Cite

A stability investigation based on Digital Outcrop Models (DOMs) acquired in emergency conditions by photogrammetric surveys based on Remote Piloted Aerial System (RPAS) was conducted on an unstable rock slope near Gallivaggio (Western Alps, Italy). The predicted mechanism of failure and volume of the unstable portion of the slope were successively verified on the DOMs acquired after the rockfall that effectively collapsed the May 29th, 2018. The comparison of the pre- and post-landslide 3D models shows that the estimated mode of failure was substantially correct. At the same time, the predicted volume of rock involved in the landslide was overestimated by around 10%. To verify if this error was due to the limited accuracy of the models georeferenced in emergency considering only the Global Navigation Satellite System/Inertial Measurement Unit (GNSS/IMU)-information of RPAS, several Ground Control Points (GCPs) were acquired after the failure. The analyses indicate that the instrumental error in the volume calculation due to the direct-georeferencing method is only of the 1.7%. In contrast, the significant part is due to the geological uncertainty in the reconstruction of the real irregular geometry of the invisible part of the failure surface. The results, however, confirm the satisfying relative accuracy of the direct-georeferenced DOMs, compatible with most geological and geoengineering purposes.

show abstract

Section: Pre-failure Analysismentioning

confidence: 99%

Reliability and Uncertainties of the Analysis of an Unstable Rock Slope Performed on RPAS Digital Outcrop Models: The Case of the Gallivaggio Landslide (Western Alps, Italy)

2020

View full text Add to dashboard Cite

show abstract

“…According to Barton [1,5], the basic friction angles of many rock types ranged from 21°to 38°, in which the sedimentary rock has a lower basic friction angle (ranging from 25°to 30°) than that of the igneous and metamorphic rocks (ranging from 30°to 35°). After that, many researchers have investigated the property [6][7][8][9][10][11][12][13][14]. Recently, due to the demand for high temperature applications in underground engineering, many researchers have focused on understanding the temperature-dependent mechanical behavior of rocks.…”

Section: Introductionmentioning

confidence: 99%

“…Although an ISRM-suggested method has been proposed by Alejano et al [15], there is no experimental data available about the temperature-dependent nature of the basic friction angle [14]. Recent investigations indicated that the basic friction angle of the rock joint was greatly influenced by the testing method [2,10,11,13,16]. According to Ulusay and Karakul [2], the tilt test and direct shear test are the two commonly used methods to determine the basic friction angle of the rock joint in the laboratory.…”

Section: Introductionmentioning

confidence: 99%

“…Alejano et al [11] further recommended that three repetitions were sufficient, but a fourth supplementary repetition should be performed when the maximum difference between one of the results and the median was larger than 3°. Other researchers [6,10,13,17] found that, with the increase in repetitions, the tilt test would probably provide an underestimation of the basic friction angle, especially when the surface was cleaned before each test. However, contradictory phenomena were also observed by Jang et al [13].…”

Section: Introductionmentioning

confidence: 99%

“…Other researchers [6,10,13,17] found that, with the increase in repetitions, the tilt test would probably provide an underestimation of the basic friction angle, especially when the surface was cleaned before each test. However, contradictory phenomena were also observed by Jang et al [13].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Friction Angle of the Leiyang Marble Surface after Exposure to High Temperature

Peng

Huang

2021

Advances in Civil Engineering

View full text Add to dashboard Cite

There is a lack of information about the temperature-dependent nature of the rock surface, which is one of the essential parameters to predict the surface friction. In the present study, we experimentally study the effect of temperature on the basic friction angle of the marble surface through the direct shear test under the low normal loading condition and tilting test (Stimpson/disk tilt test). The basic friction angle gradually decreases with the increase in temperature from 20°C to 600°C for the two kinds of the tilting test. The results indicate that the Stimpson test on samples with the length-to-diameter ratio of 2 can be more reliable to estimate the basic friction angle of the rock surface after exposure to high temperatures. The results illustrate that the sliding angle depends on the surface condition. With the increase in the repetitive measurements, the sliding angle decreases as the marble surface is cleaned, and the parameter increases as the marble surface is not cleaned.

show abstract

Water–Rock Interactions in Rock Fractures

Zhao

2023

Coupled Thermo-Hydro-Mechanical-Chemical Processes in Fractured Rocks

View full text Add to dashboard Cite

Determination of the Basic Friction Angle of Rock Surfaces by Tilt Tests

Cited by 24 publications

References 31 publications

Reliability and Uncertainties of the Analysis of an Unstable Rock Slope Performed on RPAS Digital Outcrop Models: The Case of the Gallivaggio Landslide (Western Alps, Italy)

Reliability and Uncertainties of the Analysis of an Unstable Rock Slope Performed on RPAS Digital Outcrop Models: The Case of the Gallivaggio Landslide (Western Alps, Italy)

The Friction Angle of the Leiyang Marble Surface after Exposure to High Temperature

Water–Rock Interactions in Rock Fractures

Contact Info

Product

Resources

About