1. Dajun Zhao, Jinfa Wu, Zhengyang Li.Simulation and experimental research on ultrasonic vibration high temperature rock, Journal of Petroleum Science and Engineering, 2022, 212. Cas District 2 2. Songyu Yin, Dajun Zhao.Investigation into the characteristics of rock damage caused by ultrasonic vibration.International Journa of ,84 Rock Mechanics and Mining, Sciences, 2016:159-164, SCI, WOS: 000371895200016. Cas District 1 3. Zengzeng Zhang,Dajun Zhao,Yan Zhao,Yu Zhou,Qiongqiong Tang,Junpeng Han.Simulation and experimental study on temperature and stress field of full-sized PDC bits in rock breaking process. Journal of Petroleum Science and Engineering, 2020.03, Vol.186,106679:1-12. Cas District 2 4. Yu Zhou, Dajun Zhao, Qiongqiong Tang,Meiyan Wang. Experimental and numerical investigation of the fatigue behaviour and crack evolution mechanism of granite under ultra-high-frequency loading. Royal Society Open Science, 2020/4/1, Vol.7 No.4 P200091. Chinese Academy of Sciences District 3 5. Junpeng Han,Dajun Zhao,Shulei Zhang,Yu Zhou. Damage Evolution of Granite under Ultrasonic Vibration with Different Amplitudes. Shock and Vibration,2022/08, Zone 4, Chinese Academy of Sciences 6. Dajun Zhao,Junpeng Han,Yu Zhou,Xiaoshu Lv, Dajun Zhao,,Ke Gao. Rock Crushing Analysis of TBM Disc Cutter Assisted by Ultra-High-Frequency Loading. Shock and Vibration,2022/11, Zone 4, Chinese Academy of Sciences 7. Cheng Zhang,Shulei Zhang,Dajun Zhao. Effect of Amplitude and Confining Pressure on Granite Failure under Ultrahigh Impact Frequency (UHF) -based on Radiation Temperature. The Geofluids, 2022/09, 2022:1-11, 4 areas of the Chinese Academy of Sciences 8. Chen WANG,DaJun ZHAO,Xin Fang. Experimental Investigation on the Feasibility and Optimal Frequency of Ultrasonic Assisted Ice Drilling Method. TEHNICKI VJESNIK-TECHNICAL GAZETTE, 2023/8/31,30 (5) :1620-1626, District 4, Chinese Academy of Sciences 9. Zhaodj, Yuanp. Research on the Influence Rule of Ultrasonic Vibration Time on Granite Damage. Journal of Mining Science,2019/7/2, Volume 54,Issue 5,pp751–762. Chinese Academy of Sciences District 4 10. Dajun Zhao, Shulei Zhang,Yan Zhao,Meiyan Wang. Experimental study on damage characteristics of granite under ultrasonic vibration load based on infrared thermography. Environmental Earth Sciences, 2019.7, 78 (14) 1-12. Chinese Academy of Sciences District 4 11. Dajun Zhao, Shulei Zhang, Meiyan Wang. Microcrack growth properties of granite under ultrasonic high-frequency excitation. Advances in Civil Engineering, 2019.6, 2019:1-11. Chinese Academy of Sciences District 4 12. Yu Zhou,Qiongqiong Tang,Shulei Zhang,Dajun Zhao. The mechanical properties of granite under ultrasonic vinration. Advances in Civil Engineering, 2019.01.20, Volume 2019, Article ID 9649165, 11 pages. Chinese Academy of Sciences District 4 13. Yu Zhou,Songyu Yin, Dajun Zhao. Effect of static loading on rock fragmentation efficiency under ultrasonic vibration. Geotechnical and Geological Engineering, 2019.01.21, Volume 37, Issue 4, pp 3497-3505. EI 14. Zhao Dajun, Zhao Yan. Textbook of Drilling Equipment. Beijing: Geological Publishing House, November 2017. ISBN978-7-116-10654-3 15. Zhao Dajun. Textbook of Soil and Soil Drilling Equipment. Changsha: Central South University Press, December 2010. ISBN978-7-5487-0114-9
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1. National Natural Science Foundation of China Project "Research on the Mechanism of Rock Breaking by Ultrasonic Vibration", approval No. 41572356, completed from January 1, 2016 to December 30, 2019. The rock breaking mechanism of hard rock such as granite broken by ultrasonic vibration and the optimal working parameters of ultrasonic vibration are explored. 2. Open project of Engineering Research Center of Ministry of Education: Research on thermal damage mechanism of dry hot rock under ultrasonic vibration, completed in 2022.1 ~ 2022.12, completed the damage mechanism of granite under thermal stress under ultrasonic vibration. 3. Jilin University Seed Fund project "Experimental Research on Ultrasonic Vibration Rock Crushing", Project No. 121040201, completed from 20013.10 to 2015.4. The feasibility of reducing rock strength by ultrasonic vibration is verified. 4. Land Resources Survey project of China Geological Survey, "Development of Geophysical Parameters MWD System and drilling rig", project No. 1212010560305, completed from 2005 to 2009. A mechanically-driven acoustic drill has been developed and the rock breaking mechanism of acoustic drilling in soil layer and alluvial layer has been explored. 5. Enterprise research topic: According to the engineering geological characteristics of pebble and gravel formation, through the theoretical calculation of sinking pipe resistance of pebble and gravel formation, the rock breaking mechanism analysis of drill bit, and according to the vibration characteristics of the drilling hammer, the drilling technology of the drilling hammer with the impact of static pressure is proposed. Using this technology, we have completed the foundation reinforcement project of cobblestone formation in Jilin Carbon Plant, the underwater blasting hole drilling project of the source project of Majia Pumping Station, the slope anchoring drilling project of Beijing-Zhuhai Expressway, the water level observation drilling project of Lianhua Power Station in Mudanjiang, the slope supporting pile drilling project of Baishan Cascade hydropower Station, etc., and achieved ideal results. 6. Enterprise research topic: Research on efficient drilling tool structure for long horizontal exploration holes, combined with domestic mature cable drill pipe technology, completed the design of ultrasonic vibration rope core drilling tool for horizontal exploration holes. |
1. National Invention Patent: Zhao Dajun; Zhai Guobing; Gao Ke; Liu Huanan; Yin Songyu; Sun Zihang. A piezoelectric ceramic ultrasonic drill, patent number: ZL201420090605.X 2. National Invention Patent: Zhao Dajun; Lu Wenrevolution; Sun Youhong; Plan victory; Hou Chuan-Bin. A drilling method for drilling with a submerged hole hammer under static pressure in loosely broken strata, Patent No. ZL20144656.3 3. National Invention patent: Zhao Dajun; Sun Zihang; Zhao Yan; Zhang Shulei; Liu Yumin; Liu Huanan; Yin Songyu; Zhai Guobing; Qi Bo; Yuan P. Auxiliary rock breaking device and method using liquid cavitation effect. Patent No. ZL201501178522.8 4. National Invention patent: Zhao Dajun; Zhang Shulei; Sun Zihang. An ultrasonic vibration rock breaking experimental device and experimental method, Patent No. ZL201610027404.9 5. National Invention patent: Zhao Dajun; Zhou Yu; Zhang Shulei; Zhai Guobing; Wang Meiyan; Liu Huanan; Yuan Peng; Qi Bo; Sun Xue-Jiao. An ultrasonic vibrating wireline core drilling tool, patent No. ZL2016100515187 6. National Invention Patent: Zhao Dajun; Zhang Cheng; Zhang Shulei; Han Junpeng; Zhang Zengzeng; Wang Yu; Li Zhengyang. A test method for ultrasonic ice drilling energy, Patent No. ZL201810926358.5 7. National Invention Patent: Zhao Dajun; Zhang Shulei; Wang Meiyan; Han Junpeng; Zhang Cheng; Wang Yu; Zhang Zengzeng. A method for cleaning mud skin on the inner wall of drill pipe and a cleaning device used, Patent No. ZL201210088529.4 8. National Invention Patent: Zhao Dajun; Wang Chen; Zhou Yu; Huang Yibin. An ultrasonic hot water drilling device and method for polar glacier, Patent No. ZL2019 1 0246324.6 9. National Invention patent: Zhao Dajun; Yuan Peng; Zhang Shulei; Zhou Yu. An all-electric ultrasonic drill and drilling method, Patent No. ZL 2017 1 0880714.X 10. National Invention Patent: Zhao Dajun; Han Junpeng; Wang Meiyan; Shi Xin; Li Zhengyang; Wu Jinfa. Shield hob with ultrasonic vibration effect and rock breaking method with hob, Patent No. ZL 2018 1 1343865.2 11. National Invention Patent: Zhao Dajun; Han Junpeng; Zhang Shulei; Zhou Yu; Yuan Peng; Zhang Zengzeng; Zhang Cheng; Wang Yu; Li Zhengyang; Wang Chen; Wu Jinfa. An ultrasonic vibration compound type well washer and a well cleaning method, Patent No. ZL 2019 1 0085882.9 12. National Invention Patent: Zhao Dajun; Han Junpeng; Wang Yu; Sun Zihang. An ultrasonic vibration rock breaking device capable of applying confining pressure, Patent No. ZL 2017 1 0037550.4 13. Utility model patent: Zhao Dajun; Yin Songyu; Gao Ke; Sun Zihang. Inner tube in place alarm rope coring drill, patent No. ZL201420583841.5 14. Utility model patent: Sun Youhong; Zhao Dajun; Yu Ping; Cypress sinensis; Guo Wei et al. Top vibration rotary drilling power head device, patent No. ZL200720094771.7 15. Utility model patent: Zhao Dajun; Li Xuan; Zhou Yu; Han Junpeng; Zhang Cheng; Zhang Zengzeng; Wu Jinfa; Zhang Cong Shan. A hydraulic high frequency vibration rotary power head, patent number ZL202022313230.7 16. Utility model patent: Zhao Dajun; Wang Meiyan; Zhou Yu; Zhang Shulei; Yin Chengyu; Sun Zihang; Liu Huanan; Sun Xuejiao; Qi Bo. A TBM high efficiency rock breaking cutter with ultrasonic vibrator, patent No. ZL201620069751.3 17. Utility model patent: Zhao Dajun; Sun Xuejiao; Zhang Shulei. An ultrasonic vibration rotary drilling bit, patent No. ZL201620421894.6 18. Utility model patent: Zhao Dajun; Zhang Shulei; Wang Meiyan; Han Junpeng; Zhang Cheng; Wang Yu; Zhang Zengzeng. An ultrasonic cleaning device for the inner wall of a pool, patent No. ZL201721045202.3 19. Utility model patent: Zhao Dajun; Zhang Shulei; Wang Meiyan; Han Junpeng; Zhang Cheng; Wang Yu; Zhang Zengzeng. An ultrasonic cleaning device for the inner wall of a wireline core drill pipe, patent No. ZL201721045448.320. Utility model patent: Zhao Dajun; Zhang Zengzeng; Zhao Yan; Zhang Shulei; Zhou Yu; Wang Yu. A handheld ultrasonic drilling rig, patent No. ZL201721473348.8 21. Utility model patent: Zhao Dajun; Yuan Peng; Zhang Shulei; Zhou Yu; Sun Xuejiao; Han Junpeng; Zhang Cheng; Wang Yu; Zhang Zengzeng; Wang Chen; Li Zhengyang. An all-electric ultrasonic drilling rig, patent No. ZL201721240316.3 22. Utility model patent: Zhao Dajun; Han Junpeng; Yuan Peng; Zhao Yan; Wang Yu. A mud purification device based on ultrasonic vibration, patent No. ZL201820276638.1 23. Utility model patent: Zhao Dajun; Wang Chen; Zhang Zengzeng; Zhou Yu. An ultrasonic vibration experimental device for applying confining pressure in liquid environment, Patent No. ZL201721753061.0 24. Utility model patent: Zhao Dajun; Wang Chen; Zhang Zengzeng; Zhao Yan; Zhou Yu. A test device for effective work of ultrasonic vibration rock breaking, Patent No. ZL201721917435.8 25. Utility model patent: Zhao Dajun; Han Junpeng; Wang Meiyan; Shi Xin; Li Zhengyang; Wu Jinja. Shield hob with ultrasonic vibration effect, patent No. ZL201821861291.3 26. Utility model patent: Zhao Dajun; Han Junpeng; Zhang Shulei; Zhou Yu; Yuan Peng; Zhang Zengzeng; Zhang Cheng; Wang Yu; Li Zhengyang; Wang Chen. An ultrasonic vibration compound type well washer, patent No. ZL201920153382.X 27. Utility model patent: Zhao Dajun; Zhou Yu; Wang Meiyan. A kind of ice drilling method with ultrasonic vibration air reverse circulation, patent No. ZL201711024183.0 28. Utility model patent: Zhao Dajun; Zhang Cheng; Zhang Shulei; Han Junpeng; Zhang Zengzeng; Wang Yu; Li Zhengyang. A rock damage test bench under ultrasonic vibration, patent No. ZL201821660731.9 29. Utility model patent: Zhao Dajun; Wu Jinfa; Zhang Cheng; Wang Chen; A high confining pressure rock mechanical properties test device and test method, Patent No. ZL202120010361.X
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1. Research and development of hydrologic water well foam pressure drilling technology. Land and resources science and technology. 2. Key technologies and drill series of high-performance full hydraulic geological drilling rig. Won the first prize of Science and Technology, Ministry of Land and Infrastructure,2013.9 3. Key technologies and applications of continental deep scientific drilling equipment. First Prize of Jilin Province Science and Technology Award,2017.10 4. Drilling technology course construction. Jilin Province Excellence Award,1995 5. Changchun May 1st Labor Medal. Changchun Federation of Trade Unions,2011.4 6. Advanced Individual of Science and Technology Work Management, Jilin University,2017 7. Jilin University Undergraduate classroom teaching "Excellence Award" twice, "Excellence Award" three times,2019.1-2024.9 8. Excellent Party Member of Construction Engineering College of Jilin University, December 2006 9. Excellent Party Member of Construction Engineering College of Jilin University, December 2007
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