Experimental analysis of the stick-slip characteristics of faults at different loading rates

Jia, Baoxin; Gao, Zong-xian; Han, Xiu-hui; Jin, Jiaxu; Zhang, Jianjun

doi:10.1371/journal.pone.0231464

Cited by 5 publications

(3 citation statements)

References 17 publications

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“…After slipping 5–20 μm, the fault slip switches into the creep state (see Figure S8 in Supporting Information ). This postseismic behavior shares features similar to many experimental results (Chambon et al., 2006; Cornelio et al., 2019; Jia et al., 2020; Nielsen, Spagnuolo, Violay, et al., 2016; Ohnaka & Shen, 1999). Postseismic slip (or deformation) also has been widely reported in natural earthquakes, for example (Hussain et al., 2018; Lin et al., 2013; Perfettini & Avouac, 2004; Twardzik et al., 2019; Xu et al., 2019).…”

Section: Resultssupporting

confidence: 87%

Numerical Insight Into Energy Partitioning During Stick‐Slip Events Based on the Framework of Rate‐and‐State Friction Law

Bai

Konietzky

2022

Geophysical Research Letters

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Many attempts have been made to investigate the energy budgets of stick‐slip events, however, the strain energy contribution is still poorly understood. We developed a discrete element method (DEM)‐based method to mimic stick‐slip events and the associated energy partitioning. We found that stress drop Δσ, breakdown energy EG, and strain energy release ΔU scale with slip δc as normalΔσ0.25em∝δc1.1 ${\Delta}\sigma \,\propto {\delta }_{c}^{1.1}$, EG∝δc2.05 ${E}_{G}\propto {\delta }_{c}^{2.05}$, and normalΔU∝δc2.1 ${\Delta}U\propto {\delta }_{c}^{2.1}$, respectively, which is quantitatively consistent with data from manmade seismicity and natural earthquakes. We observed two different slip‐weakening behavior patterns: one without a postseismic phase (Type I) and one containing a postseismic phase (Type II). We show that ΔU contributes 20%∼90% (63% on average) and 10% ∼ 60% (38% on average) to the total energy budget for Type I and Type II events, respectively. Formations that store higher strain energy play a more vital role in the earthquake energy budget, regardless of the distance to the fault.

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Section: Resultssupporting

confidence: 87%

Numerical Insight Into Energy Partitioning During Stick‐Slip Events Based on the Framework of Rate‐and‐State Friction Law

Bai

Konietzky

2022

Geophysical Research Letters

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“…The drops represent the stick-slip contact between the smooth surface of the cable bolt and the grout. This behaviour has also been studied and discussed by [36], [37].…”

Section: Static Test Resultsmentioning

confidence: 87%

Laboratory study of the behaviour of grouted cable bolts under static and dynamic axial loading

Anzanpour

Aziz

Remennikov

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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As a typical roof-supporting system of tunnels, Cable bolts are subjected to static and dynamic loading conditions caused by ground movements and mining activities. As mining goes deeper, the chance of undetermined ground stress concentrations increases and subsequently, the probability of sudden unexpected failures such as rock bursts increases. Many studies have been carried out to simulate the axial loading condition of the tendons, especially cable bolts, under static and dynamic loading modes; however, it barely can be seen that both behaviours have been studied and compared simultaneously. From other points of view, although research has been conducted on Barrel and Wedge and load-bearing plates, these components have hardly been considered together in axial loading studies. In this laboratory study, a new pullout testing mechanism has been introduced, which is capable of implementing axial loading of cable bolts in both static and dynamic loading conditions. In addition, in a parametric study, the role of bulbs of the cable bolts as well as barrel and wedges on the load-bearing capacity of the anchors have been examined. The bond between cable bolts and grout material in the bulbed cables behaves almost 30% stronger in static and 40% stronger in dynamic tests in comparison with plain cables. In general, the required pullout energy in dynamic tests was 25-50% less than in static tests.

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“…In vertical well drilling, stick-slip causes torsional movement of the Bottom Hole Assembly (BHA), which increases the disturbance of the drilling operations [4]. These disruptions can be from various factors including operational, geological, and mechanical [5]. For vertical drilling practices to be efficient, cost-effective, and safe, it is crucial to comprehend the complex interactions among these parameters and their combined impact on stick-slip.…”

Section: Introductionmentioning

confidence: 99%

Investigation and Analysis of Influential Parameters in Bottomhole Stick–Slip Calculation during Vertical Drilling Operations

Ejike,

Obuobi,

Avinu

et al. 2024

Energies

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The critical factors that affect bottomhole stick–slip vibrations during vertical drilling operations are thoroughly investigated and analyzed in this research. Influential factors, such as rotation speed, weight on bit (WOB), bottom hole assembly (BHA) configuration, and formation properties, were studied in order to understand their part in the stick–slip phenomena. The analysis is based on a thorough review of previous research conducted on stick–slip drilling vibrations. A mathematical model was created that not only explains axial vibrations but also includes the torsional vibrations present in stick–slip occurrences, which helps with understanding the stick–slip phenomena better. This model can be used as an analytical tool to predict and evaluate the behavior of drilling systems under various operational circumstances. Furthermore, two drilling tests using a WellScan simulator were performed to validate the research findings and assess mitigation techniques’ viability. These test scenarios reflect the stick–slip vibration-producing situations, allowing us to test mitigation strategies. The finding of this study shows the effectiveness of two tactics for reducing stick–slip vibrations. First was the reduction of WOB, which successfully lowered the occurrence of stick–slip vibrations. The second was the increase in the rotation speed, which helped to control the stick–slip problem and increased the drilling speed. This study explains the complex dynamics of stick–slip vibrations during vertical drilling and offers practical, tried-and-true methods for reducing their adverse effects on drilling operations.

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Experimental analysis of the stick-slip characteristics of faults at different loading rates

Cited by 5 publications

References 17 publications

Numerical Insight Into Energy Partitioning During Stick‐Slip Events Based on the Framework of Rate‐and‐State Friction Law

Numerical Insight Into Energy Partitioning During Stick‐Slip Events Based on the Framework of Rate‐and‐State Friction Law

Laboratory study of the behaviour of grouted cable bolts under static and dynamic axial loading

Investigation and Analysis of Influential Parameters in Bottomhole Stick–Slip Calculation during Vertical Drilling Operations

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