CN209749356U - Saline and alkaline land water conservancy improvement structure - Google Patents

Abstract

The utility model provides a saline and alkaline land water conservancy improvement structure, include: the drainage seepage ditch, the waterproof layer, the filter layer, the seepage layer and the planting soil layer are sequentially arranged from bottom to top; and a plurality of permeable pipes are arranged in the drainage seepage ditch and the filter layer in a penetrating manner and used for purifying the infiltration water in the planting soil layer and then draining the purified infiltration water to external equipment. In the utility model, the drainage seepage ditch is matched with the waterproof layer, the filter layer and the seepage layer arranged on the upper part of the drainage seepage ditch, and the underground saline-alkali water is led to the water collecting pit and then is discharged into the peripheral saline-alkali water pipe network through the external equipment; the waterproof layer is arranged, so that the salt rising of the underground water can be effectively prevented, and the upper planting soil layer is prevented from being polluted; the upper part of the waterproof layer is provided with a filter layer and a permeable layer, so that the infiltration of the infiltration water from the bottom is ensured, the partially backfilled original soil can be improved, and the infiltration water before the improvement of the original soil is finished can be pumped into a special pipe network for peripheral saline-alkali water; the infiltration water after the improvement of the original soil can be pumped out to be used as irrigation water, thereby achieving the purpose of water saving.

Description

Saline and alkaline land water conservancy improvement structure

Technical Field

The utility model relates to a saline and alkaline land transformation technical field particularly, relates to a saline and alkaline land water conservancy improvement structure.

Background

Nowadays, saline-alkali land areas face the problems of soil salinization, lack of fresh water resources, underground salinization and the like. The root cause of the formation of saline-alkali soil is poor moisture status, so in the early stage of improvement, emphasis is placed on improving the moisture status of soil. Generally comprises the steps of firstly discharging salt, washing salt and reducing the salt content of soil; then planting saline-alkali tolerant plants, and fertilizing the soil to finally plant crops. The concrete improvement measures are as follows: draining water, irrigating and washing salt, dredging and improving, planting rice, cultivating and improving, leveling land and chemically improving.

The existing saline-alkali soil improvement technology is generally carried out by adopting measures such as open ditch alkali removal, large water alkali removal, and Taitian alkali removal, and the measures generally have the defects of large fresh water consumption and water resource shortage.

Disclosure of Invention

Overcome above-mentioned prior art's defect, the utility model provides a saline and alkaline land water conservancy improvement structure.

In one aspect, the utility model provides a saline and alkaline land water conservancy improvement structure, include: the drainage seepage ditch, the waterproof layer, the filter layer, the seepage layer and the planting soil layer are sequentially arranged from bottom to top; and a plurality of permeable pipes are arranged in the drainage seepage ditch and the filter layer in a penetrating manner and used for purifying the infiltration water in the planting soil layer and then draining the purified infiltration water to external equipment.

Further, in the saline and alkaline land water conservancy improvement structure, the waterproof layer is a waterproof blanket.

Further, in the above-mentioned saline and alkaline land water conservancy improvement structure, the filter layer is the gravel layer.

Further, among the above-mentioned saline and alkaline land water conservancy improvement structure, the permeable formation is the carpenter's layer.

Further, in the saline and alkaline land water conservancy improvement structure, the top of the woodworking layer is provided with a non-woven fabric.

Furthermore, in the saline and alkaline land water conservancy improvement structure, be provided with in the planting soil layer and be used for restricting the water level limiter of planting soil layer middle water level.

Furthermore, in the above-mentioned saline and alkaline land water conservancy improvement structure, one side of drainage infiltration ditch is provided with the water pump for take out the secret salt buck to peripheral salt buck water pipe network or take out the infiltration water after the improvement of former soil is accomplished as irrigation water.

Further, in the saline and alkaline land water conservancy improvement structure, the cross-section of drainage infiltration ditch is trapezoidal.

Compared with the prior art, the water conservancy improvement structure for the saline-alkali soil has the advantages that the underground saline-alkali water is introduced to the water collecting pit and then discharged into a peripheral saline-alkali water pipe network through external equipment by matching the drainage seepage ditch with the waterproof layer, the filter layer and the seepage layer arranged on the upper part of the drainage seepage ditch; the waterproof layer is arranged, so that the salt rising of the underground water can be effectively prevented, and the upper planting soil layer is prevented from being polluted; the upper part of the waterproof layer is provided with a filter layer and a permeable layer, so that the infiltration of the infiltration water from the bottom is ensured, the partially backfilled original soil can be improved, and the infiltration water before the improvement of the original soil is finished can be pumped into a special pipe network for peripheral saline-alkali water; the infiltration water after the improvement of the original soil can be pumped out to be used as irrigation water, thereby achieving the purpose of water saving.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:

Fig. 1 is a schematic view of a water conservancy improvement structure of a saline-alkali soil provided by the embodiment of the utility model.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring to fig. 1, the water conservancy improvement structure of the saline-alkali soil provided by the embodiment of the utility model comprises: the water drainage seepage ditch comprises a drainage seepage ditch 1, a waterproof layer 2, a filter layer 3, a seepage layer 4 and a planting soil layer 5 which are arranged from bottom to top in sequence; a plurality of water permeable pipes 6 penetrate through the drainage seepage ditch 1 and the filter layer 3 and are used for purifying the downward seepage water in the planting soil layer 5 and then draining the downward seepage water into external equipment.

Particularly, the cross-section of the drainage seepage ditch 1 can be in a trapezoidal structure so as to guide underground saline-alkali water to the water collecting pit for uniform treatment and improve the planting soil layer 5. Gravels with the particle size distribution of 20-40mm are filled and compacted in the drainage seepage ditch.

The waterproof layer 2 is a waterproof blanket, such as a bentonite waterproof blanket. The arrangement of the waterproof blanket can effectively prevent the salt in the underground water from rising and avoid polluting the upper planting soil.

The filter layer 3 may also be a gravel layer, i.e. the layer is packed with gravel. Wherein the particle size distribution of the gravel is 20-40 mm. The infiltration layer is a woodworking layer, and the top of the infiltration layer is provided with non-woven fabrics for filtering water discharged from the upper part.

The permeable pipe 6 can be arranged along the direction parallel to the cross section of the drainage seepage ditch 1, and can be convenient for purifying the seeped water.

in addition, a water level limiter (not shown in the figure) for limiting the water level in the planting soil layer 5 is arranged in the planting soil layer 5, a water pump (not shown in the figure) is arranged on one side of the drainage seepage ditch for controlling the underground water level ~ be-3 ~ -4m, and the water pump is used for pumping underground saline-alkali water ~ a peripheral saline-alkali water pipe network or pumping the infiltration water after the improvement of the original soil as irrigation water.

The above obviously shows that, in the water conservancy improvement structure for saline-alkali soil provided in this embodiment, the drainage seepage ditch is matched with the waterproof layer, the filter layer and the seepage layer arranged on the drainage seepage ditch, so that the saline-alkali water is introduced to the water collection pit and then is discharged into the peripheral saline-alkali water pipe network through the external equipment; the waterproof layer is arranged, so that the salt rising of the underground water can be effectively prevented, and the upper planting soil layer is prevented from being polluted; the upper part of the waterproof layer is provided with a filter layer and a permeable layer, so that the infiltration of the infiltration water from the bottom is ensured, the partially backfilled original soil can be improved, and the infiltration water before the improvement of the original soil is finished can be pumped into a special pipe network for peripheral saline-alkali water; the infiltration water after the improvement of the original soil can be pumped out to be used as irrigation water, so that the aim of saving water is achieved, and the soil is ensured not to be excessively wet.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (3)

1. The utility model provides a saline and alkaline land water conservancy improvement structure which characterized in that includes: the drainage seepage ditch, the waterproof layer, the filter layer, the seepage layer and the planting soil layer are sequentially arranged from bottom to top; wherein the content of the first and second substances,

A plurality of water permeable pipes are arranged in the drainage seepage ditch and the filter layer in a penetrating way and used for purifying and draining the downward seepage water in the planting soil layer to external equipment; the section of the drainage seepage ditch is trapezoidal; the permeable layer is a woodworking layer; the top of the woodworking layer is provided with a non-woven fabric; a water level limiter used for limiting the water level in the planting soil layer is arranged in the planting soil layer; and a water pump is arranged on one side of the drainage seepage ditch and is used for pumping underground saline-alkali water to a peripheral saline-alkali water pipe network or pumping out the infiltration water after the improvement of the original soil as irrigation water.

2. The saline-alkali soil water conservancy improvement structure of claim 1, wherein the waterproof layer is a waterproof blanket.

3. The water conservancy improvement structure in saline-alkali soil according to claim 1, wherein the filter layer is a gravel layer.