COMMENTS ON CHEMICAL INJECTIONS

COMENTARIO SOBRE LAS INYECCIONES QUIMICAS

DURING UNDERGROUND CONSTRUCTION WORK IN URBAN AREAS, IT IS NECESSARY TO TAKE SAFETY MEASURES NOT ONLY TO ENSURE, THE SAFETY OF THE WORKERS BUT ALSO TO PREVENT ANY EFFECTS ON BUILDINGS, STRUCTURES AND SERVICES LOCATED IN THE AREA SURROUNDING THE WORK SITE. ONE PROPOSED PROCEDURE IS THE USE OF INJECTION TO FORM SILICA GELS; DETAILS OF THIS TECHNIQUE ARE GIVEN IN THIS PAPER. IT CANNOT BE USED WHEN THE PERMEABILITY COEFFICIENT OF THE SOIL IS LOWER THAN 10-4CU/ SEC; IN THAT CASE, LOW VISCOSITY PRODUCTS SHOULD BE INJECTED (E.G. ORGANIC RESINS). IF THE PERMEABILITY IS VERY HIGH, CEMENT INJECTION WITH OR WITHOUT BENTONITE, SHOULD BE USED. AN ADEQUATE REACTIVE PRODUCE SHOULD BE USED. THE DRILL HOLES MUST BE SUFFICIENTLY CLOSE FOR THE GROUT TO BE SATISFACTORILY INJECTED. THE RADIUS OF ACTION OF EACH DRILL HOLE MAY NOT BE CONSIDERED LARGER THAN 1 METER. OTHER KIND OF PRACTICAL RECOMMENDATION ARE INCLUDED REGARDING THE USE OF PIPES, SLEEVES, INJECTION PUMPS WITH LOST TIPS, ETC.

  • Authors:
    • Lopez, M
  • Publication Date: 1974-5

Language

  • Spanish

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00083693
  • Record Type: Publication
  • Source Agency: Transportation & Soil Mechanics Laboratory, Spain
  • Files: ITRD, TRIS
  • Created Date: Apr 22 1975 12:00AM