Rock and Soil Mechanics ›› 2023, Vol. 44 ›› Issue (1): 1-30.doi: 10.16285/j.rsm.2022.2027

• Rock and Soil Mechanics Excellence Forum •     Next Articles

Key technology analysis and development trend of the equipment for ultra-long directional drilling and grouting

LI Shu-cai1, LI Li-ping1, 2, SUN Zi-zheng1, 2, LIU Zhi-hui2, LI Meng-tian1, 2, PAN Dong-dong1, 2, TU Wen-feng1, 2   

  1. 1. Geotechnical and Structural Engineering Research Center, Shandong University, Jinan, Shandong 250061, China; 2. School of Qilu Transportation, Shandong University, Jinan, Shandong 250002, China
  • Received:2022-12-20 Accepted:2023-01-04 Online:2023-01-16 Published:2023-01-12
  • Supported by:
    This work was supported by the Key Basic Research Project of China(No. 2022YFC3005604).

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Abstract: Directional drilling technology (DDT) originated from oil drilling industry. After many years of development, DDT has been extended to geological investigation and disaster management for tunnel engineering, aquifer reconstruction at the bottom of coal mines, pumping channel construction for power storage stations, municipal pipeline laying and other fields. Combined with the advantages of DDT for long-distance accurate crossing, ground grouting technology can achieve safe and efficient management of underground engineering disasters, and has a broad application prospect. This paper systematically reviews the development history, research status and key technologies of DDT. Firstly, the development history of DDT is introduced. Secondly, the scientific research plan, academic paper publication, relevant patent authorization, and application exploration of DDT are analysed. The analysis results show that the DDT in China has reached an internationally advanced level of technological independence and broad-range application, but there are still some core technical problems that need to be resolved, such as thousand-meter long-distance fast drilling, accurate drilling guidance in complex geological conditions, and accurate grouting in underground engineering. Focusing on the construction requirements of strategic major projects, this paper proposes four functional modules, i.e., forecasting, drilling, grouting and detecting, and analyses and discusses six aspects of ultra-long directional drilling and grouting (i.e., sensing prediction while drilling, rapid drilling and sticking prediction, precision guidance technology, remote gel controllable grouting material, pressure stabilizing and controlling sectional grouting process, and detection system with drilling). This paper can provide reference for the development of DDT, and for the prevention and control of disasters in underground engineering.

Key words: underground engineering, directional drilling, ground grouting, integrated drilling and injection equipment, grouting technique

CLC Number: 

  • O 319.56
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