Advertisement

Indian Geotechnical Journal

, Volume 48, Issue 4, pp 615–625 | Cite as

In-Situ Stress Measurement in Raniganj Coalfield and Its Applications in Mine Stability Analysis

  • Niraj KumarEmail author
  • Ajoy Kumar Singh
  • Ranjan Kumar
  • Amalendu Sinha
Original Paper
  • 79 Downloads

Abstract

The in situ stresses have significant effects on the stability of openings, support requirements, parting stability, pillar strength, etc. In order to analyze the stability of underground structures, the measurement of magnitude and direction of horizontal stress is necessary in addition to knowing other geomining parameters and rock properties. In this direction, this paper presents a systematic determination of in situ stresses in three mines of the southern Raniganj coalfield of India, using single sleeve fracturing technique. Based on the analysis of field test results, the gradients of major, minor and average horizontal stresses are established for the southern Raniganj coalfield. The determined in situ stress values are used in numerical modeling for stability evaluation of known case histories of parting between contiguous seams and pillars of this coalfield. The numerical modeling results analyzed in this paper validated that the in situ stresses determined in the Raniganj coalfield are acceptable for the stability analysis of coal pillars, parting and underground roadways.

Keywords

In-situ stress measurement Sleeve fracturing technique Horizontal stress Parting stability analysis Numerical modeling 

Notes

Acknowledgements

The authors would like to thank the Director, CSIR-CIMFR, for permitting to publish this paper. The authors are immensely thankful to our former colleagues, Dr. A. K. Sinha, Mr. A. K. Ghosh, Dr. Mohan Prasad, Mr. D. G. Rao and Mr. Pramod Kumar who provided insight and expertise during the execution of this research works.

Funding

This work was supported by Coal Science and Technology grant of the Ministry of Coal, Government of India.

References

  1. 1.
    Brown ET, Hoek E (1978) Trends in relationships between measured rock in situ stresses and depth. Int J Rock Mech Min Sci Geomech Abstr 15:211–215CrossRefGoogle Scholar
  2. 2.
    Terzaghi K, Richart FE (1952) Stresses in rock about cavities. Geotechnique 3:57–90CrossRefGoogle Scholar
  3. 3.
    Brown ET, Hoek E (1980) Underground excavations in rock. Inst Min Metall, LondonCrossRefGoogle Scholar
  4. 4.
    McCutchen WR (1982) Some elements of a theory for in situ stress. Int J Rock Mech 19:201–203CrossRefGoogle Scholar
  5. 5.
    Amadei B, Stephansson O (1997) Rock stress and its measurement. Chapman & Hall Press, LondonCrossRefGoogle Scholar
  6. 6.
    Clark JB (1949) A hydraulic process for increasing the productivity of wells. Petrol Trans Am Inst Min Eng TP 2510(186):1–8Google Scholar
  7. 7.
    Hubbert KM, Willis DG (1957) Mechanics of hydraulic fracturing Petrol. Trans Am Inst Min Eng 210:153–166Google Scholar
  8. 8.
    Fairhust C (1964) Measurement of in situ rock stresses with particular reference to hydraulic fracturing. Rock Mech Eng Geol 2:129–147Google Scholar
  9. 9.
    Hooker VE, Bickel DL (1974) Overcoring equipment and techniques used in rock stress determination. USBR IC-8618Google Scholar
  10. 10.
    Bhola KL (1968) Geology of Narwapahar uranium deposit. Prague, Czech Republic, Int Geol CongGoogle Scholar
  11. 11.
    Bhola KL (1968) Geology of Narwapahar uranium deposit. In: International geology congress, Prague, Czech RepublicGoogle Scholar
  12. 12.
    John LP (2000) Three dimensional numerical modelling of machine hall and transformer hall caverns at Ghatghar pumped storage scheme. CMRI reportGoogle Scholar
  13. 13.
    Sheorey PR (1997) Empirical failure criteria. A.A. Balkema, RotterdemGoogle Scholar
  14. 14.
    Prasad M, Sinha A, Prasad L (2001) Design of pillars in hard rock mines by numerical simulation techniques. In: Proceedings of the 3rd Indian conference on computer applications in mineral industry (ICCAMI), New Delhi, India, 301–314Google Scholar
  15. 15.
    Sharma P (1997) In-situ stress measurement and its application in mining–case studies of Indian mines. In: Obaraeds Y, Sugawara K (eds) Rock stress. A.A. Balkema, RotterdemGoogle Scholar
  16. 16.
    Ghosh SC (2002) The Raniganj coal basin: an example of an Indian Gondwana rift. Sed Geol 147(1):155–176CrossRefGoogle Scholar
  17. 17.
    Anireddy HR, Ghose AK, Kejriwal BK (1994) Estimation of in situ horizontal stresses in Indian coal basins. Minetech 15(2):5–16Google Scholar
  18. 18.
    Hudson JA, Cornet FH, Christiansson R (2003) ISRM suggested methods for rock stress estimation—Part 1: strategy for rock stress estimation. Int J Rock Mech Min Sci 40:991–998CrossRefGoogle Scholar
  19. 19.
    Sjöberg J, Christiansson R, Hudson JA (2003) ISRM suggested methods for rock stress estimation—Part 2: overcoring methods. Int J Rock Mech Min Sci 40:999–1010CrossRefGoogle Scholar
  20. 20.
    Haimson BC, Cornet FH (2003) ISRM suggested methods for rock stress estimation—part 3: hydraulic fracturing (HF) and/or hydraulic testing of pre-existing fractures (HTPF). Int J Rock Mech Min Sci 40:1011–1020CrossRefGoogle Scholar
  21. 21.
    Christiansson R, Hudson JA (2003) ISRM suggested methods for rock stress estimation—part 4: quality control of rock stress estimation. Int J Rock Mech Min Sci 40:1021–1025CrossRefGoogle Scholar
  22. 22.
    Stephansson O, Zang A (2012) ISRM suggested methods for rock stress estimation—part 5: establishing a model for the in situ stress at a given site. Rock Mech Rock Eng 45(6):955–969CrossRefGoogle Scholar
  23. 23.
    Charsley AD, Martin CD, McCreath DR (2003) Sleeve fracturing limitations for measuring in situ stress in an isotropic stress environment. Int J Rock Mech Min Sci 40:127–136CrossRefGoogle Scholar
  24. 24.
    Stephansson O (1983) Rock stress measurement by sleeve fracturing. In: Proceedings of the 5th Congress IntSoc Rock Mech, Melbourne, Austrailia. Rotterdam: AA Balkema, F129-37Google Scholar
  25. 25.
    Serata S, Sakuma S, Kikuchi S, Mizuta Y (1992) Double fracture method of in situ stress measurement in brittle rock. Rock Mech Rock Eng 25:89–108CrossRefGoogle Scholar
  26. 26.
    Stress/Property measurement system S-350 (1997) Users’ Manual, Serata Geomechanics Inc., Richmond, California-94806, USAGoogle Scholar
  27. 27.
    Goodman RE (1980) Introduction to rock mechanics. Wiley, New York, pp 107–109Google Scholar
  28. 28.
    Mohan GM, Sheorey PR, Kushwaha A (2001) Numerical estimation of pillar strength in coal mines. Int J Rock Mech Min Sci 38:1185–1192CrossRefGoogle Scholar

Copyright information

© Indian Geotechnical Society 2018

Authors and Affiliations

  • Niraj Kumar
    • 1
  • Ajoy Kumar Singh
    • 1
  • Ranjan Kumar
    • 1
  • Amalendu Sinha
    • 1
  1. 1.CSIR-Central Institute of Mining and Fuel ResearchDhanbadIndia

Personalised recommendations