Water-rich stratum pipe piece combined structure and construction method thereof

Water-rich stratum pipe piece combined structure and construction method thereof

  • CN 105,781,575 B
  • Filed: 03/11/2016
  • Issued: 11/13/2020
  • Est. Priority Date: 03/11/2016
  • Status: Active Grant
First Claim
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1. The water-rich stratum pipe piece combined structure is characterized by comprising a plurality of groups of spliced pipe pieces, wherein a grouting wall is arranged on the outer side of each pipe piece, the grouting wall is made of a water-permeable grouting material, two lining concretes are arranged on the inner side of each pipe piece, and a waterproof layer is arranged between each pipe piece and the two lining concretes;

  • the waterproof layer is a waterproof board;

    the waterproof plates are laid according to rings, the waterproof plates and the duct pieces are spliced according to a staggered joint mode, gaps among the duct pieces are covered by the waterproof plates, and meanwhile the waterproof plates are fixed by bolts in the duct pieces;

    the water-permeable grouting material comprises cement, coarse aggregates, water, bentonite slurry and an additive;

    the skeleton of the coarse aggregate is 2.5-5mm or 5-10mm or 10-15mm of sand or gravel or waste concrete in construction waste, and the skeleton accounts for 60-75% of the coarse aggregate;

    the water-cement ratio of the water-permeable grouting material is 0.28-0.33, a water stop strip is arranged between the spliced pipe pieces, and the water stop strip is sleeved into the pipe piece water stop groove before the pipe pieces are spliced.

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