UNSTEADY FLOW TO A PUMPED WELL IN A FISSURED WATER-BEARING FORMATION

New equations are derived for the drawdown in a water-bearing fissured rock formation, consisting of a set of horizontal low-permeability porous blocks separated by highly permeable fissures. Porous blocks and fissures are assumed to be compressible. The depth of the fissure is small compared with that of the block. The abstraction well, lined along the block is pumped at a constant rate. The discharge per unit length of the unlined part in the fissure is constant, and the radius of the well is vanishingly small. Type curves for the drawdown in the fissure and the propus block are computed and plotted for some selected parameters involved. Procedure for determining the fissured aquifer parameter constants is outlined. /Author/

• Corporate Authors:

  Elsevier

  Radarweg 29
  Amsterdam,   Netherlands  1043 NX
• Authors:
  • Boulton, N S
  • Streltsova, T D
• Publication Date: 1977-11

Media Info

• Features: Figures; References;
• Pagination: p. 257-270
• Serial:
  • Journal of Hydrology
  • Volume: 35
  • Issue Number: 3/4

Subject/Index Terms

• TRT Terms: Cracking; Drawdown (Hydraulics); Flow; Mathematical models; Permeability; Porosity; Pumps; Rocks; Streamflow; Water; Wells
• Old TRIS Terms: Discharge; Drawdown
• Subject Areas: Bridges and other structures; Geotechnology; Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 00168374
• Record Type: Publication
• Files: TRIS
• Created Date: Jan 13 1978 12:00AM