Film laying anti-seepage salt pan and building method thereof

A salt field and film laying technology, applied in construction, infrastructure engineering, alkali metal chloride and other directions, can solve the problems of easy aging of canvas and ordinary PE film, affecting the production of salt fields, short service cycle, etc., to prevent leakage of salt fields, The effect of strong plasticity and long service life

Active Publication Date: 2017-04-19
CHANGSHA DESIGN & RES INST OF CHEM IND MIN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the advantages of low cost and simple construction, but its disadvantages are: on the one hand, the clay still has a certain porosity after compaction, which cannot prevent leakage to the greatest extent; on the other hand, restricted by geological conditions, only some areas Clay with good impermeability exists
[0005] Another effective anti-seepage method is plastic film bottom anti-seepage, that is, a layer of plastic film is laid on the soil at the bottom of the salt pan or on the surface to form a barrier layer to prevent brine from seepage. The material of the film used is PVC canvas or PE plastic film , the construction of plastic film bottom laying is simple, and the anti-seep

Method used

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  • Film laying anti-seepage salt pan and building method thereof
  • Film laying anti-seepage salt pan and building method thereof
  • Film laying anti-seepage salt pan and building method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] This embodiment is carried out in a salt field with a length and width of 2000m×1000m, and the film laying time is high temperature in summer, and the length and width of the HDPE film used are 100m×8m.

[0044] Such as Figure 1~3 Shown, a kind of film-laying anti-seepage salt pan is formed by surrounding the salt pan bottom 1 and the side slope 2, and a 45cm thick NaCl pool plate 3 is provided on the salt pan bottom 1; parallel to the short side of the salt pan, The bottom surface of the salt pan 1 is excavated with a brine guide ditch 4 every 500m, which divides the salt pan into blocks; on the bottom surface 1 of each single brine pan divided by the brine guide ditch 4, paved in parallel vertically and horizontally every 50m Exhaust pipe 5 is laid in parallel on the Yantian slope 2 every 80m. One end of the exhaust pipe 5 communicates with the exhaust pipe at the bottom of the Yantian, and the other end (exhaust end) extends out of the Yantian slope 2; A salt pan b...

Embodiment 2

[0055] This embodiment is carried out in a salt field with a length and width of 1000m×1000m, and the film laying time is in low temperature winter weather, and the length and width of the film used are 80m×6m.

[0056] Such as Figure 1~3 Shown, a kind of film-laying anti-seepage salt pan is surrounded by salt pan bottom surface 1 and side slope 2 and forms, is provided with 40cm thick NaCl pool plate 3 in described salt pan bottom surface 1; Parallel to the short side of described salt pan, in The brine guide ditch 4 is excavated every 300m on the bottom of the salt pan, and the salt pan is divided into blocks; on the bottom surface 1 of each single salt pan formed by the brine guide ditch 4, the brine guide ditch 4 is laid in parallel vertically and horizontally every 120m. Exhaust pipe 5 is laid in parallel on the Yantian slope 2 every 100m. One end of the exhaust pipe 5 communicates with the exhaust pipe at the bottom of the Yantian, and the other end (exhaust end) extend...

Embodiment 3

[0067] This embodiment is carried out in a salt field with a length and width of 4000m×1000m, and the film laying time is in low temperature winter weather, and the length and width of the film used are 100m×8m.

[0068] Such as Figure 1~3 Shown, a kind of film-laying anti-seepage salt pan is formed by surrounding the salt pan bottom 1 and the side slope 2, and a 10cm thick NaCl pool plate 3 is provided on the salt pan bottom 1; parallel to the short side of the salt pan, The bottom of the salt pan 1 is excavated with a brine guide ditch 4 every 500m, and the salt pan is divided into blocks; each piece of the single salt pan bottom 1 divided by the brine guide ditch 4 is laid in parallel vertically and horizontally every 200m. Exhaust pipe 5 is laid in parallel on the Yantian slope 2 every 120m. One end of the exhaust pipe 5 communicates with the exhaust pipe at the bottom of the Yantian, and the other end (exhaust end) extends out of the Yantian slope 2; A salt pan bottom f...

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Abstract

The invention discloses a film laying anti-seepage salt pan and a building method thereof. The salt pan is defined by a salt pan bottom face and side slopes in a surrounding manner; a NaCl pond plate is arranged on the salt pan bottom face; a halogen guiding trench is excavated in the salt pan bottom face; exhaust pipes are laid on each single parcel of salt pan bottom face and the salt pan side slopes; a salt pan bottom face film is laid tightly attached to the salt pan bottom face and the halogen guiding trench; salt pan side slope films are laid on the salt pan side slopes, the films are welded to one another; a segment of fold exists at the positions, close to the salt pan bottom face, of the salt pan side slope films; and anchoring trenches are formed below the top edge positions of the salt pan side slopes. The building method includes pond plate sun-curing, halogen discharging, leveling, rolling and pressing, exhaust pipeline laying, film laying and welding, side slope film anchoring, halogen guiding, exhausting and other steps. The film laying anti-seepage salt pan is good in anti-seepage performance, the brine seepage and leakage amount can be reduced by 60-90%, the using period is long, the exhausting performance is good, and the comprehensive cost is low; and the method is easy to construct, wide in applicability, short in work period and low in cost.

Description

technical field [0001] The invention relates to an anti-seepage salt field and a construction method thereof, in particular to a membrane-laid anti-seepage salt field and a construction method thereof. Background technique [0002] In the production of salt fields, brine seepage in salt fields is an important index to evaluate the quality of salt fields. The loss of brine resources caused by the seepage of salt pans is a technical problem encountered by many sodium salt and potassium salt production units. According to actual production experience, the seepage rate of Qinghai Salt Lake Salt Fields and Xinjiang Salt Lake Salt Fields in my country is about 0.5-0.8mm / d, and the loss of potassium resources caused by seepage reaches 20-50%, while the brine leaked from salt fields is infiltrating into the ground After being dispersed and absorbed, it is difficult to mine and recover again. Therefore, seepage in salt fields not only causes a substantial increase in the cost of res...

Claims

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Application Information

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IPC IPC(8): C01D3/06E02D3/00
CPCC01D3/06E02D3/00
Inventor 孙成高汤建良胡淑曾夏适冯文平谢晶磊
Owner CHANGSHA DESIGN & RES INST OF CHEM IND MIN
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