Reinforcing effects of 3D printed bolts on joint-separated standard soft rock specimens

Feng, Xiaowei; Xue, Fei; Wang, Tianzhuo; Wang, Linxiang; Zhao, Tongyang; Liu, Xiaoxia

doi:10.1016/j.compositesb.2020.108024

Cited by 19 publications

(11 citation statements)

References 32 publications

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“…The numerical and laboratory tests have been used to investigate the factors influencing the mechanical properties of anchored rock joints [139,140]. Feng et al [29] used 3DP rock bolts and anchoring glue to reinforce the specimens with joints. The surface morphology of the 3DP rock bolt is consistent with the actual rock bolt with better strength.…”

Section: Integration Of 3dp and The Stress Freezing Techniquementioning

confidence: 99%

“…As an additive manufacturing technology, the 3DP differs from traditional manufacturing techniques such as cutting and grinding because it uses a layer-by-layer accumulation method to achieve the precise reconfiguration of complex structures. In recent years, the 3DP has been widely used in many fields such as biomedicine, aerospace, automobile manufacturing, and electronic components [26][27][28][29]. With the development of 3DP technology, some studies have begun to explore the applications of 3DP in the field of rock mechanics.…”

Section: Introductionmentioning

confidence: 99%

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Application of 3D Printing Technology in the Mechanical Testing of Complex Structural Rock Masses

et al. 2021

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In the engineering of underground construction, the discontinuous structures in rock mass have important influences on the mechanical behaviors of the subsurface of rock mass. The acquisition of mechanical parameters is the basis of rock mass engineering design, construction, safety, and stability evaluation. However, the mechanical parameters and failure characteristics of the same rock mass under different mechanical conditions cannot be obtained due to the limitations of specimen preparation techniques. In recent years, with the continuous development of 3D printing (3DP) technology, it has been successfully applied to the repetitive preparation of rock mass samples. The combinations of 3DP and other techniques, such as 3D scanning and CT scanning, provided a new approach to study the mechanical behavior of complex structural rock masses. In this study, through a comprehensive review of the technical progress, equipment situation, application fields, and challenges of the use of 3DP technology, the following conclusions were obtained: (1) 3DP technology has advantages over traditional rock mass specimen preparation techniques, and the verification of test results using 3D printed samples shows that the 3DP has broad application prospects in geotechnical engineering. (2) The combination of 3DP and other advanced techniques can be used to achieve the accurate reconstruction of complex structural rock masses and to obtain the mechanical and failure characteristics of the same rock mass structure under different mechanical boundary conditions. (3) The development of 3DP materials with high strength, high brittleness, and low ductility has become the major bottleneck in the application of 3DP in geotechnical engineering. (4) 3D printers need to meet the high precision and large size requirements while also having high strength and long-term printing ability. The development of 3D printers that can print different types of materials is also an important aspect of the application of 3DP in geotechnical engineering.

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Section: Integration Of 3dp and The Stress Freezing Techniquementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Application of 3D Printing Technology in the Mechanical Testing of Complex Structural Rock Masses

et al. 2021

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“…The design can decrease material usage, increase elasticity by a special shape, and increase mechanical strength and chemical resistance by combining high-performance materials. Also, reference [82] tested the reinforcing effects of 3D printed bolts on rocks. However, it is easy for the fastener systems to fail or be damaged under long-term railway dynamic loads, especially on high-speed and heavy-haul railway lines.…”

Section: Fastenersmentioning

confidence: 99%

Section: Fastenersmentioning

confidence: 99%

State-of-the-Art Review on Additive Manufacturing Technology in Railway Infrastructure Systems

Kaewunruen

2021

J. Compos. Sci.

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Additive manufacturing technologies, well known as three-dimensional printing (3DP) technologies, have been applied in many industrial fields, including aerospace, automobiles, shipbuilding, civil engineering and nuclear power. However, despite the high material utilization and the ability to rapidly construct complex shaped structures of 3D printing technologies, the application of additive manufacturing technologies in railway track infrastructure is still at the exploratory stage. This paper reviews the state-of-the-art research of additive manufacturing technologies related the railway track infrastructure and discusses the challenges and prospects of 3D printing technology in this area. The insights will not only help the development of 3D printing technologies into railway engineering but also enable smarter railway track component design and improve track performance and inspection strategies.

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“…e effectiveness of prediction and prevention of rock burst needs to be improved. So far it has not formed a complete system of rock burst measurement, prediction, and treatment [1][2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Stress Relief and Support for Stability of Deep Mining Roadway with Thick Top Coal in Hujiahe Coal Mine with the Risk of Rock Burst

Liu

Qian

Yang

et al. 2021

Shock and Vibration

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Rock burst is a typical dynamic disaster in deep underground coal mining. Based on the support problems of the deep roadways in fully mechanized caving face 401111 of Hujiahe Coal Mine suffering from rock burst in Shaanxi Province of China, the failure law and influencing factors of the surrounding rock of the roadway are analyzed. The results show that the deformation of surrounding rock in the roadway shows the characteristics of elastic, plastic transformation, rheology, and expansion. At the same time, it has the typical characteristics of deep roadway, such as the fast deformation speed, long duration, asymmetric deformation, and large loose broken area of surrounding rock. Based on the principle of “strengthening support in shallow zones” and “deep pressure relief in deep zones” in the surrounding rock, the control scheme of surrounding rock in the return roadway of fully mechanized caving working face 401111 is proposed by taking the large diameter pressure relief and deep hole blasting as the main means of pressure relief. The practice shows that the surrounding rock of the return roadway is relatively stable after the implementation of the new scheme, which shows that the design of the new support scheme is reasonable and reliable. It is of great significance for the stability control of surrounding rock of the mining roadway suffering from rock burst.

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Reinforcing effects of 3D printed bolts on joint-separated standard soft rock specimens

Cited by 19 publications

References 32 publications

Application of 3D Printing Technology in the Mechanical Testing of Complex Structural Rock Masses

Application of 3D Printing Technology in the Mechanical Testing of Complex Structural Rock Masses

State-of-the-Art Review on Additive Manufacturing Technology in Railway Infrastructure Systems

Stress Relief and Support for Stability of Deep Mining Roadway with Thick Top Coal in Hujiahe Coal Mine with the Risk of Rock Burst

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