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Study on Impact Penetration Test of Rock.
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- OKUBO Seisuke
- Faculty of Engineering, The University of Tokyo
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- NISHIMATSU Yuichi
- Faculty of Engineering, The University of Tokyo
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- AKIYAMA Masao
- Faculty of Engineering, The University of Tokyo
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- TATSUMI Tetsu
- Nippon Steel Co., Ltd.
Bibliographic Information
- Other Title
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- 衝撃貫入試験法の開発と試験結果
- ショウゲキ カンニュウ シケンホウ ノ カイハツ ト シケン ケッカ
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Description
Impact penetration test is important to observe the behaviour of rock undergoing very rapid loading which can not be realized by a testing machine. A force-penetration relationship is considered to be closely related to performance of percussive rock fragmentation process.<BR>A lot of experimental studies have been carried out and it was found that the slope of force-penetration curve in impact penetration test is steeper than that in static penetration test. However, qualitatively much difference exists from author to author.<BR>A system of impact penetration test developed in this study comprises a hammer and a cylindrical bar with a bit at one end. Stress wave is measured by a pair of semi-conductor strain gauges, and penetration is calculated by the measured stress wave.<BR>Nine rocks were tested and force-penetration curves in impact and static tests were obtained together with uniaxial compressive strength, indirect tensile strength, Young's modulus, Poison's ratio, rebound hardness by Schmidt hammer and Shore hardness. Good correlation was found between force-penetration curves in impact and static tests, and slope by impact test, Kd can be expressed by slope in static test, Ks as Kd=1.2Ks<BR>The difference between Kd and Ks is not so much as expected, just 20%.
Journal
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- Shigen-to-Sozai
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Shigen-to-Sozai 108 (2), 134-140, 1992
The Mining and Materials Processing Institute of Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390001206016656128
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- NII Article ID
- 130004755306
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- NII Book ID
- AN10062646
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- ISSN
- 18806244
- 09161740
- http://id.crossref.org/issn/09161740
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- NDL BIB ID
- 3760204
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL Search
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed