循环冲击荷载对岩石特性的影响

IF 0.9 Q3 ENGINEERING, MULTIDISCIPLINARY

Journal of Engineering and Technological Sciences Pub Date : 2022-12-31 DOI:10.5614/j.eng.technol.sci.2022.54.6.11

G. Simangunsong, Y. Safitri

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引用次数: 0

摘要

本研究主要在实验室进行，以评估循环冲击载荷对岩石性质的影响。测试样品是由水泥、沙子和水制成的岩石状材料。样品受到从不同高度落下的金属磅的冲击载荷。负载被反复施加到样品上，直到其被损坏和/或直到失效。测试结果揭示了压裂过程的四个阶段，从样品上表面的坑洞开始，形成初始裂缝，沿着样品的裂缝发展，最后样品失效。试验结果还表明，随着冲击载荷的增加，直到失效的循环次数减少。此外，单轴抗压强度和杨氏模量的值随着循环载荷次数的增加而降低。该减少与损伤值的增加成比例。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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The Effect of Cyclic Impact Loads on Rock Properties

This study was conducted mainly in the laboratory to evaluate the effect of cyclic impact loads on rock properties. The test sample was a rock-like material made of cement, sand, and water. The sample was given an impact load from a metal pounder that was dropped at various heights. The load was repeatedly applied to the sample until it was damaged and/or until failure. The test results revealed four stages in the fracturing process, starting with cratering of the upper surface of the sample, formation of initial fractures, fracture development along the sample, and finally sample failure. The test results also revealed that with an increase of impact load, the number of cycles until failure decreases. Furthermore, the value of uniaxial compressive strength and Young’s modulus decreases with increasing number of cyclic loads. The decrease is proportional to the increase of the damage value.

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来源期刊

Journal of Engineering and Technological Sciences ENGINEERING, MULTIDISCIPLINARY-

CiteScore

2.30

自引率

11.10%

发文量

审稿时长

24 weeks

期刊介绍： Journal of Engineering and Technological Sciences welcomes full research articles in the area of Engineering Sciences from the following subject areas: Aerospace Engineering, Biotechnology, Chemical Engineering, Civil Engineering, Electrical Engineering, Engineering Physics, Environmental Engineering, Industrial Engineering, Information Engineering, Mechanical Engineering, Material Science and Engineering, Manufacturing Processes, Microelectronics, Mining Engineering, Petroleum Engineering, and other application of physical, biological, chemical and mathematical sciences in engineering. Authors are invited to submit articles that have not been published previously and are not under consideration elsewhere.