Discontinuities effect on drilling condition and performance of selected rocks in Nigeria

Adebayo, B.; Bello, W.A.

doi:10.1016/j.ijmst.2014.07.008

Cited by 7 publications

(3 citation statements)

References 10 publications

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“…It is claimed that in the formulas used for the PR prediction, RQD or fracture frequency, which could account for the effect of discontinuities (Basarir & Karpuz 2016;Basarir et al 2014;Scoble & Peck 1987), should be included. In a similar manner it was found that a relationship between the penetration rate and joint spacing can be established (Adebayo & Bello 2014). While most authors agree that the penetration rate can be indicative of rock strength, it is noted that geology is not the only factor influencing the rate of penetration.…”

Section: Penetration Ratementioning

confidence: 72%

The use of soft computing methods for the prediction of rock properties based on measurement while drilling data

Başarır¹,

Wesseloo²,

Karrech³

et al. 2017

Proceedings of the International Conference on Deep and High Stress Mining

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Due to recent technological advancements drilling operations conducted for different purposes such as exploration, blasting and even grouting are not considered as auxiliary operations any longer. On the contrary, nowadays onsite drilling operations are considered as important resources for getting more information about rock properties. Many researchers have been working on measurement while drilling (MWD) techniques and their possible use for the prediction of rock mass properties. This paper presents a literature survey on the use of MWD technology for the prediction of rock mass properties. The survey indicates that the analysis and interpretation of MWD data is as important as recording the data. Both blackbox modelling such as regression and soft computing or grey-box modelling techniques are used as a tool for the analysis and interpretation of MWD data. This paper presents a case study showing the integration of soft computing methods such as adaptive fuzzy inference system (ANFIS) with MWD data for the prediction of rock mass properties such as rock quality designation (RQD). The results indicated that such soft computing methods can successfully be used as an analysis and interpretation tool.

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Section: Penetration Ratementioning

confidence: 72%

The use of soft computing methods for the prediction of rock properties based on measurement while drilling data

Başarır¹,

Wesseloo²,

Karrech³

et al. 2017

Proceedings of the International Conference on Deep and High Stress Mining

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“…Samples of the granite rock collected from the field were prepared in the laboratory and tested to standard for hardness with the use of Schmidt Hammer Rebound Value. The laboratory procedures suggested by Adebayo et al (2010) [19] [20] for intact rock uniaxial compression test were adopted in this study to ensure accuracy of results. The ISRM suggested mode -I fracture toughness testing method as elaborated by [21] was also considered for determining fracture toughness of the rock samples.…”

Section: Laboratory Analysismentioning

confidence: 99%

A study on the physical and mechanical properties of a granite outcrop for a quarry at Onikoko community, Oyo State, South-Western Nigeria

Salati¹,

Adeyemo²

2021

Min. miner. depos.

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Purpose. To investigate the physical and mechanical properties of a granite outcrop for a quarry at Onikoko community in Oyo State, South-Western Nigeria. Methods. Samples of granite rock were collected from the outcrop for the laboratory determination of their physical and mechanical properties required for determining its suitability for construction and engineering purposes, and the desired properties were determined. Findings. Results from the tests conducted on the granite samples indicated the various values of physical and mechanical properties of the outcrop in the study area. The results obtained are found to be within the acceptable international standards. Hence, the granite outcrop is found to be suitable for establishing a quarry in the study area based on the results obtained. Originality.The results in this study have affirmed the fact that granite rocks must possess adequate physical and mechanical characteristics to make them suitable for construction and engineering purposes. The physico-mechanical properties of the granite outcrop evaluated in this study having their values within the international standards attest to high strength cha-racterization of the granite rock. The life span of the proposed quarry is established to be forty years, which is also an indication of rich mineralization of the area. Practical implications. Results of this study can be a useful source of information to potential investors and policy makers for the establishment of a quarry in the study area. Hence, government’s attention can be drawn to the needs of the host community for the provision of basic infrastructures. Keywords: granite outcrop, physical and mechanical properties, quarrying operation

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“…The aim should be to produce the strength and discontinuity logs by the MWD system on a hole-to-hole basis. Babatunde et al [23] reported the correlation of two MWD parameters, namely, the specific energy and bit wear rate with joint spacing in gneiss and limestone rocks. They also established the relationship between penetration rate and joint spacing in such rocks.…”

Section: Bimentioning

confidence: 99%

Measurement-while-drilling technique and its scope in design and prediction of rock blasting

Rai

Schunnesson

Lindqvist

et al. 2016

International Journal of Mining Science and Technology

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Discontinuities effect on drilling condition and performance of selected rocks in Nigeria

Cited by 7 publications

References 10 publications

The use of soft computing methods for the prediction of rock properties based on measurement while drilling data

The use of soft computing methods for the prediction of rock properties based on measurement while drilling data

A study on the physical and mechanical properties of a granite outcrop for a quarry at Onikoko community, Oyo State, South-Western Nigeria

Measurement-while-drilling technique and its scope in design and prediction of rock blasting

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