Rapid construction method for seepage-proof dam of salt pan

Abstract

The invention discloses a rapid construction method for a seepage-proof dam of a salt pan. The rapid construction method specifically includes firstly, digging a foundation trench; secondly, putting a seepage-proof material to the bottom of the foundation trench, and filling the foundation trench with earth and grinding the earth; thirdly, directly lifting the seepage-proof material to a designed lift height after grinding; finally, earthing up and grinding synchronously on two sides of the seepage-proof material. The construction process includes the steps of foundation trench digging, filming, foundation trench filling, film lifting, earthing-up, grinding, re-earthing-up and re-grinding, and the conventional earth surface construction process, including earthing-up, grinding and film turning, for the seepage-proof dam is changed into earthing-up and grinding, so that process is simplified, construction period is shortened, extruding and folding of the seepage-proof material due to the action of natural angle of repose of the earth during layered and staggered earthling-up and grinding can be avoided, loss of the seepage-proof material is reduced, and construction cost of the seepage-proof dam is saved.

Description

technical field [0001] The invention relates to a construction method of an anti-seepage dam in a salt field, in particular to a rapid construction method for an anti-seepage dam in a salt field containing an anti-seepage material. Background technique [0002] The existing Yantian anti-seepage dam is built after the foundation trench is filled, and then the dam body is repeatedly covered with soil and rolled on both sides of the anti-seepage material by layered and staggered rolling. Foundation trench—soil covering—rolling—membrane turning—recovering soil—rerolling—returning membrane. After the foundation trench is filled in this way, the dam construction process is membrane turning—soil covering—rolling. Not only is the process connection more complicated, In addition, due to the staggered rolling of layers on both sides of the anti-seepage material, the anti-seepage material is inclined under the action of the natural repose angle of the soil in each layer. The laying met...

AI Technical Summary

Problems solved by technology

[0002] The existing Yantian anti-seepage dam is built after the foundation trench is filled, and then the dam body is repeatedly covered with soil and rolled on both sides of the anti-seepage material by layered and staggered rolling. Foundation trench—soil covering—rolling—membrane turning—recovering soil—rerolling—returning membrane. After the foundation trench is filled in this way, the dam construction process is membrane turning—soil covering—rolling. Not only is the process connection more complicated, In addition, due to the staggered rolling of layers on both sides of the anti-seepage material, the anti-seepage material is inclined under the action of the natural repose angle of the soil in each layer. The laying method of the anti-seepage material is determined by figure 1 The laying method for the design shown becomes figure 2 The laying method shown in the actual construction, so the actual construction consumes 20-40% more anti-seepage materials than the design, resulting in a great waste of artificial materials, and at the same time increases the cost of the anti-seepage dam

Images