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Hydrological testing for deep shafts and tunnels

  • Daw G. P. 
  • Scott R. A. 
International Symposium Soil and Rock Investigation by In Situ Testing Thème 3 Hydraulical and Hydrogeological Testing, to Determine the Permeability of the Pores or Transmissivity of the Fractures

Summary

Methods of water testing for mineshaft investigations have moved away from steady state well resistance measurements towards the transient methods associated with Theis and developed by Horner and others. The commonest system in use is the drill stem test of the oil industry but alternative methods employing the measurement of the recovery of aquifer pressure following a period of borehole flow are described, which on occasion are better suited to the evaluation of very strong aquifers. Results of such tests are compared with those from a new type of probehole test carried out from the advancing excavation face.

Keywords

Pressure Recovery Drill Stem Drill Pipe Pump Chamber Pressure Transient Testing 

Essais hydrologiques pour tunnels et puits profonds

Résumé

La méthodologie des études hydrologiques minières a abandonné les mesures de résistance des puits en régime stabilisé au profit des techniques dites transitories développées par Theis et mises au point par Horneret al. Le système le plus couramment utilisé est le “drill-stem test”, essai pratiqué dans l'industrie pétrolière. Diverses solutions nouvelles sont présentées; elles reposent sur la détermination de la remontée en pression de la nappe après un prélèvement temporaire par puits tubulaire et sont, dans certains cas, mieux adaptées à l'évaluation des nappes très puissantes. Les résultats sont comparés à ceux d'un nouveau type d'essai pratiqué à partir d'un front de taille.

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References

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Copyright information

© International Association of Engineering Geology 1982

Authors and Affiliations

  • Daw G. P. 
    • 1
  • Scott R. A. 
    • 1
  1. 1.Cementation Specialist Holdings LimitedRickmansworthEngland

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