Non Destructive Inspection of Corrosion in Rock Bolts Using an Ultrasonic Waveguide Approach

Taras, André; Saleh, Kaveh

doi:10.1007/978-981-13-8331-1_30

Cited by 1 publication

(3 citation statements)

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“…However, a rock bolt means wave velocity of 3000 m/s was assumed in the calculations. More recently, Taras et al studied corrosion in rock bolts with the aid of waveguides (Figure 4) [16]. They successfully developed a wave energy propagation model for the analysis of ultrasonic waves based on reflected waves caused by the presence of defects.…”

Section: (A) (B)mentioning

confidence: 99%

“…The energy of the reflected waves was used to calculate the coefficient of end reflection. The calculated values for reflection coefficients were used to determine the length of the rock bolts, tapered reduction (defects), and cracks in the rock bolts [16]. More recently, Taras et al studied corrosion in rock bolts with the aid of waveguides (Figure 4) [16].…”

Section: (A) (B)mentioning

confidence: 99%

“…The calculated values for reflection coefficients were used to determine the length of the rock bolts, tapered reduction (defects), and cracks in the rock bolts [16]. More recently, Taras et al studied corrosion in rock bolts with the aid of waveguides (Figure 4) [16]. They successfully developed a wave energy propagation model for the analysis of ultrasonic waves based on reflected waves caused by the presence of defects.…”

Section: (A) (B)mentioning

confidence: 99%

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Review of Non-Destructive Methods for Rock Bolts Condition Evaluation

Lama

Momayez

2023

Mining

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Rock bolts are one of the most effective and conventional support techniques widely used in underground mining and tunneling operations to stabilize excavations and jointed rock masses. External factors such as corrosion, overloading, and improper installation can weaken rock bolts, which could result in ground failure causing injury or loss of life and production. Monitoring the health condition of rock bolts will reduce the risk of accidents providing a safer environment for workers and equipment. This paper reviews monitoring methods currently used to assess the condition of installed rock bolts. Furthermore, we classify the surveyed techniques depending on the type of problems they attempt to solve. Presented are methods such as ultrasonics, fiber optics, piezoelectric, electromagnetics, impact echo, acoustic emission, and numerical algorithms. Each method is based on a unique physical principle that aids in evaluating corrosion and strain levels in the rock bolt. However, recent research to detect corrosion has primarily focused on rebar type of rock bolts used in concrete structures. Consequently, more research is needed to monitor the condition of the other types of rock bolts used in the industry such as cable bolts and split set bolts. In conclusion, the paper highlights various methods of studying rock bolt failure initiated by strain, corrosion, and improper installation of the grouts. It also explores the research advancement made for the study of rock bolt failure. This investigation is specifically beneficial to the mining and tunneling industry for better understanding and prediction of rock bolt failure.

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Section: (A) (B)mentioning

confidence: 99%

Section: (A) (B)mentioning

confidence: 99%