Advanced SearchSearch Tips
An experimental study on the improvement of tunnel drainage system using a geogrid composite
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
An experimental study on the improvement of tunnel drainage system using a geogrid composite
Lee, Jun S.; Choi, Il-yoon; Lim, Jihoon; Yoon, Suk Chul;
  PDF(new window)
A new testing equipment is designed to investigate the characteristics of the drainage fabric which is used in the tunnel drain system. The equipment is possible to model the loading as well as boundary conditions of the shotcrete precisely and it follows the general guideline of ASTM D4716 so that the interface between shotcrete and concrete lining retains the real situation in the tunnel site. Using the real loading conditions and surface irregularities, the flow rate and its capacity of the regular fabric has been estimated. A composite drainage fabric having geogrid inside was also used to investigate the flow rate and its efficiency. The advantages of the composite fabric compared with the regular one have been demonstrated using the experimental data and brief outline of the future work is finally proposed.
Drainage system;Geogrid;Permeability;Roughness;Flow rate;
 Cited by
ASTM (2013), D 4716-08 : Standard test method for determining the (in-plane) flow rate per unit width and hydraulic transmissivity of a geosynthetic using a constant head.

Barton, N., Choubey, V. (1977), The shear strength of rock joints in theory and practice, Rock Mech., Vol. 10, pp. 1-54. crossref(new window)

Holter, K.G. (2014), Loads on sprayed waterproof tunnel linings in jointed hard rock : A study based on Norwegian cases, Rock Mech. Rock Eng., Vol. 47, pp. 1003-1020. crossref(new window)

Jang, Y.-S., Kim, B., Lee, J.-W. (2015), Evaluation of discharge capacity of geosynthetic drains for potential use in tunnels, Geotextiles & Geomembranes, Vol. 43, pp. 228-239. crossref(new window)

Korea expressway Corporation (2012), Expressway Construction Guide Specification.

Korea Rail Network Authority (2013a), Drainage and Waterproofing, KR C-12060, KR Code.

Korea Rail Network Authority (2013b), Railway Construction Guide Specification.

Korean Standards Association (2002), KS K ISO: 12958 Geotextiles and geotextile-related products: Determination of water flow capacity in their plane.

Murillo, C.A., Shin, J.H., Kim, K.H., Colmenares, J.E. (2014), Performance tests of geotextile permeability for tunnel drainage systems, KSCE, Vol. 18, No. 3, pp. 827-830.

Palmeira, E.M., Gardoni, M.G. (2002), Drainage and filtration properties of non-woven geotextiles under confinement using different experimental techniques, Geotextiles & Geomembranes, Vol. 20, pp. 97-115. crossref(new window)