Rock Mechanics

Sivakugan, Nagaratnam; Shukla, Sanjay Kumar; Das, Braja M.

doi:10.1201/b14084

Cited by 30 publications

(2 citation statements)

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“…An assessment was also carried out using the GSI method from [24]. The analysis showed that tuffaceous sandstone has an RQD value of 7.05 and GSI [25] value is 18.5, but the results of qualitative analysis with the GSI [24] give a value of 20-36. Joint analysis of tuffaceous claystone shows that the rock has an RQD of 5.03 and a GSI value by [26] is 17.5, but the results of qualitative analysis with GSI [24] give a value of 7-19.…”

Section: Rock Mass Qualitymentioning

confidence: 99%

Analysis of the Tunnel Face Failure during the Excavation and Evaluation of Excavation Method and Sequential on Ciuyah Tunnel, Lebak Regency, Banten Province

Bismoseno,

Indrawan,

Junica

2023

IOP Conf. Ser.: Earth Environ. Sci.

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The difference in geological and geotechnical conditions during design and implementation are frequent due to the lack of data collection and diverse rock variations. An important step in designing the excavation method, stages, and support system are determining the rock mass’s actual condition. Inaccuracy in evaluating rock mass quality can cause a collapse during tunnel excavation. This study used an example of a collapse case on the inlet side of the Ciuyah tunnel. The classification system used in the design was the JSCE 1975, but collapses occurred at several locations during excavations. An additional assessment of the tunnel stability was carried out by doing surface surveys and evaluations in STA 0+123 using the RMR89, GSI, and JSCE 2016 classification systems. The rock mass in this location consists of tuffaceous claystone and tuffaceous sandstone with very poor quality. The empirical evaluation showed that Daraei’s multigraph could be used to determine the collapse pattern for very poor rock. For the excavation method, stages, and support systems, it is preferable to apply the RMR classification system with consideration for the maximum stand-up time. This research aims to provide information that may be used for other projects with similar geological circumstances.

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Section: Rock Mass Qualitymentioning

confidence: 99%

Analysis of the Tunnel Face Failure during the Excavation and Evaluation of Excavation Method and Sequential on Ciuyah Tunnel, Lebak Regency, Banten Province

Bismoseno,

Indrawan,

Junica

2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…Melasti Beach area At this moment, to develop the area, the region administrator is constructing a tourism facility by excavating a rock mass near the beach. The rock Slope which is resulted from excavation activities can be unstable because of the activating moment of the rock mass is greater than the resisting moment (Sivakugan et al, 2013). Therefore, to avoid damage to nearby areas due to excavation activity, a study is needed to be conducted about the rock mass that is being excavated.…”

Section: Introductionmentioning

confidence: 99%

Rock slope stability analysis in Melasti Beach area – Ungasan, Bali

Arya,

Wiraga,

Negara

et al. 2023

irjeis

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Melasti Beach is one of the main tourist attractions developed by the Bali Government. This beach is located in the southern area of Bali, precisely in Ungasan village, Badung Regency, Bali. At the moment, the region administrator is constructing a tourism facility by excavating a rock mass near the beach. Therefore, to avoid damage to nearby shops and beach facilities, a study is needed to be conducted about the safety of the rock mass that is being excavated. Direct observation of the rock mass and rock mass classification is conducted to obtain the physic and mechanical characteristics of the rock. To do the stability analysis of the slope, Geo-Studio 2012 software is used by inputting the data obtained from the field and laboratory data. The result of this study is a mass rock in Melasti Beach is classified as limestone which has a Fair rock classification and the factor of the safety of the rock slope/cliff is 1.631 which means the cliff is safe and is no need to build an extra reinforcement on the slope/cliff.

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