Study on the Measuring Instruments and Strength Size Effect of the Surface Shape of Rigid Structure Plane

Abstract:

The surface shape of structure plane is closely related with its mechanics property. Precise measurement to the surface shape of structure plane is the basis of deformation mechanism and strength characteristics. On the basis of studying advantages and disadvantages of the measuring instrument, the author has developed a new kind of portable measuring instruments innovatively - Contact Punching Device which has improved open-air working efficiency greatly. Application results show that JRC obtained by the Contact Punching Device is very close to the actual JRC of surface shape of the structure plane. Then about size effect of rigid structure plane, got the following principle that the statistical variance of the undulating roughness of the structure surface decays gradually with length of the rock sample, and got the limiting length of the undulating roughness when the influence of shearing intensity of the structure is dispelled. Finally, which proved through the embodiment of different rock and different weathering rock, the result indicates this method can be applied to engineering.

• Periodical: Advanced Materials Research (Volumes 250-253)
• Pages: 2327-2332
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.250-253.2327
• Online since: May 2011
• Authors: Feng Ji, Yu Chuan Shi
• Keywords: Contact Punching Device, Measurement Instrument, Strength Size Effect, Structural Plane, Surface Shape

References

[1] Qinsong Li, Shouji Du: ROCK AND SOIL MECHANICS. Vol.25(2004),p.850

[2] Zhihua Zhou, Shouji Du: ROCK AND SOIL MECHANICS,Vol.26(2005),p.1227

[3] Zhijing LI, Dezhen Zhu:CHINESE JOURNAL OF ROCK MECHANICS AND ENGINEERING.Vol.28(2009),p.2605

[4] Shigui Du, Shufeng Yang : JOURNAL OF ENGINEERING GEOLOGY.Vol.10(2002), p.98

[5] Feng Ji: Study on Strength Parameter of Hard Structural Plane and Engineering Technique for Consequent Slope.Chengdu University doctor paper,2008.

[6] Yanhong Zhang, Junrui Chai: CHINESE JOURNAL OF ROCK MECHANICS AND ENGINEERING.Vol.28(2009),p.3423

[7] Yuanming Liu, Caichu Xia, Hongzhe Li: CHINESE JOURNAL OF UNDERGROUND SPACE AND ENGINEERING.Vol.3(2007),p.682

[8] Caichu Xia, Zongxin Sun: Journal of Hydraulic Engineering.Vol.3(1995),p.62

[9] Caichu Xia, Zongxin Sun, Changliang Pan:Third General Assembly TECHNOLOGY of Rock Mechanics Engineering Society of China.Beijing: China Science and Technology Press,(1994)

[10] Grasselli G. Ph.D. thesis, Lausanne, Switzerland：Swiss Federal Institute of Technol gy(EPEL)，2001.

[11] Y S LI,:International Journal of Rock Mechanics and Mining Sciences.Vol.37(2000),p.467