Research of Soundless Crack with Different Number of Drillholes

Abstract:

The special advantages of Soundless Crack method are safety and environmental protection. Soundless Crack is widely used in stone exploitation, partly crack of brittleness materials such as rock and concrete, and backout of building in city. In these engineering, we must drill many holes for loading Soundless Cracking Agents, but the drilling cost is expensive including human cost and materials cost, at the same time need much time to drill these holes. So we hope to gain the best crack results at the minimum drillhole numbers. This paper used RFPA software to set up some models with different drillhole numbers, gained different failure process of models. Adopted different drilling plan will occur different results. We should drill more holes if we need partly crack smoothly. We can plan the number of drillholes based on our need if we can use RFPA to simulate the failure process before beginning.

• Periodical: Applied Mechanics and Materials (Volumes 580-583)
• Pages: 689-692
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.580-583.689
• Online since: July 2014
• Authors: Lie Xian Tang*, Dong Zhang, Zhen Tong An, Jun Yan Zhang
• Keywords: Failure Process, Numerical Simulation, RFPA, Soundless Crack

References

[1] Yin Guo-wei, Wen Xiang-yong. Application of soundless broken preparation in concrete and steel reinforced concrete demolishment[J]. Journal of Heilongjiang Hydraulic Engineering College. Vol. 28 No. 1 2001. 3: 78~80.

[2] Zhu Hui. The application of soundless breaking agent in stone demolition construction[J]. Shanxi Architechture. Vol. 28 No. 6 2002. 6: 55~56.

[3] Tang Lie-xian, Tang Chun-an, Tang Shi-bin. Pysical experiment and numerical tests of soundless cracking on concrete [J]. Concrete, 2005, (8) : 3-5 (in Chinese).

[4] Tang Lie-xian, Tang Chun-an, Tang Shi-bin. Pysical experiment and numerical tests of soundless cracking[J]. Journal of Geotechnical Engineering, 2005, 27(4): 437-441 (in Chinese).

[5] Tang Chun-an, Tang Lie-xian, Li Lian-chong, Li Chang-wen. Centrifugal loading method of RFPA for the failure process analysis of rock and soil structure[J]. Chinese Journal of Geotechnical Engineering, 2007, 29(1): 71-76.

[6] Tang Chun-an, Li Lian-chong. RFPA centrifugal mode-theory and application[J]. Failure Mechanics Letters, 2005, 3: 41-42.

[7] Zhu Wan-cheng, Tang Chun-an, Yang Tian-hong, Liang Zheng-zhao. Constitutive relationship of mesoscopic elements used in RFPA2D and its validations[J]. Chinese Journal of Rock Mechanics and Engineering, 2003, 22(1): 24-29.