Water and Energy International

SCOPUS
  • Year: 2025
  • Volume: 68r
  • Issue: 3

Innovative probe drilling technique for ground condition evaluation in the tunnelling of lesser Himalaya - A case study

  • Author:
  • Manoj Kumar1, Sandeep Potnis2, Rakesh Arora3
  • Total Page Count: 4
  • DOI:
  • Page Number: 6 to 9

1M. Tech.-Scholar. -Tunnel Engineering, School of Civil Engineering, Dr. Vishwanath Karad MIT-World Peace University, Pune

2Professor, School of Civil Engineering, Dr Vishwanath Karad MIT-World Peace University, Pune

3Project Director, Larsen & Toubro Ltd., Tunnel 8 (Package 4), Pauri Garhwal, Uttarakhand

Abstract

Geological difficulties specific to the Himalayas include a variety of rock kinds, seismic activity, and shifting weathering patterns. Conventional exploration techniques frequently fail to record the minute data required for precise tunnel design and construction scheduling. This paper presents an entirely novel form of probe drilling specifically designed to evaluate ground conditions in the Himalayan region. It focuses on using this technique for tunnel building endeavours for New BG line of Rishikesh- Karanprayag project. Modern drilling technologies are combined with advanced geophysical and geotechnical analysis in the suggested probe drilling approach. The technique enables continuous monitoring of subsurface conditions and real-time data capture through the use of specialized drilling instruments and sensors. In order to overcome the drawbacks of traditional approaches and provide a more accurate picture of the intricate geological layers that are common in the Himalayan region, the study highlights the significance of in-situ data collection. The practicality and dependability of the probe drilling method are illustrated via case study and field tests. The outcomes demonstrate the technique's capacity to offer comprehensive details on structural integrity, possible dangers, and rock properties-all of which are essential for determining if tunnel construction is economically feasible. The approach is also a viable option for infrastructure projects in difficult terrain because to its cost-effectiveness and flexibility to different geological formations. The results of this study provide a dependable and effective tool for planning tunnel building, furthering site investigation procedures in the Himalayas. The suggested probe drilling method could improve geological evaluations’ accuracy, resulting in safer and more durable tunnel infrastructure in the Himalayan region and elsewhere. In order to meet the particular geological complexity of mountainous terrains, this study promotes the implementation of novel exploration techniques, supporting strong and sustainable engineering practices in tunnel construction projects.

Keywords

Exploration technique, Geophysical method, In-situ data collection, Probe drilling, Himalaya, NATM