Underground pipe line type seepagefiltrationn alkali-discharging technology

An underground pipeline and infiltration technology, applied in soil drainage, soil protection, soil lifting machinery, etc., can solve the problems of difficulty and high cost of implementation, high investment cost and inconvenience of alkali drainage wells, and increase the economic benefits of land , Improve land utilization and reduce production costs

Inactive Publication Date: 2008-02-06
朱明亮
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Among the traditional soil salinity improvement methods, most of them use the method of digging alkali drainage channels at intervals on the land, and drain the saline-alkali water through the infiltration of groundwater. The depth of the channels is generally 1-5 meters. The width of the soil reaches tens of meters, which occupies a large area of ​​arable land and blocks the land, which brings inconvenience to the operation of large-scale agricultural machinery. Maintenance is required every 1 to 2 years, which greatly increases the production cost
Chinese patent CN1736885 discloses a decompression and caustic drainage technology of connected wells. This technology is to arrange caustic drainage wells at intervals under a certain area of ​​land, and the caustic drainage wells are connected by connecting pipes. The implementation difficulty and cost of this method are very high. , especially the cost of alkali drainage well is very high, it is difficult to popularize and apply it in a large area, and the wellhead is 1 meter above the ground, which will also have an adverse impact on farming

Method used

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  • Underground pipe line type seepagefiltrationn alkali-discharging technology

Examples

Experimental program
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Embodiment 1

[0015] With reference to Fig. 1, excavate a ditch with a depth of 1 meter at intervals of 10 meters on the well-leveled land with a gradient of ≤1:100, cover the bottom of the ditch with a layer of sand and gravel (3) after the bottom of the ditch is leveled, and cover the top of the ditch densely. A hole (2) with a diameter of 5mm, a distance between the holes of 15mm, and a PVC pipe (1) with a diameter of 100mm are placed at the bottom of the ditch, and the PVC pipe is covered with sand and gravel, and the overlying soil (4) is used to fill up the trench. At the same time, the downstream outlet of the alkali discharge pipe can be connected with the drain.

Embodiment 2

[0017] Dig ditches with a depth of 2 meters at intervals of 150 meters on well-leveled land with a slope ≤ 1:500. After the bottom of the ditch is leveled, cover a layer of mung bean gravel with a diameter of 2 to 5 mm on the gravel. Lay a concrete pipe (1) with a pipe diameter of 200mm and wrapped with a filter screen (3) made of glass fiber filaments. The walls of the concrete pipe are densely covered with holes (2) with a diameter of 20mm, and the distance between the holes is 20mm. Cover the concrete pipe with rocks, fill up the trench with soil, and connect with the drainage ditch at the downstream outlet of the alkali discharge pipe.

Embodiment 3

[0019] Dig a trench with a depth of 3 meters at intervals of 300 meters on a well-leveled land with a slope ≤ 1:2500. After leveling the bottom of the trench, spread a layer of sand and gravel on the bottom of the trench, and densely cover the circumference with holes with a diameter of 10 mm (2) , The distance between the holes is 20mm, the diameter of the pipe is 200mm, and the filter mesh (3) made of filter cloth with a diameter of 2mm is wrapped around the pipe. The PVC pipe (1) is placed at the bottom of the ditch, and the PVC pipe is covered with sand , cover and fill up the ditch, and at the same time communicate with the drain at the downstream outlet of the alkali discharge pipe.

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Abstract

The present invention relates to an underground pipe alkali removal technology, which is characterized that an alkali removal pipe with filtration holes are paved 0.5-5 meters underground with an interval of 10-1000 meters. Through paving the alkali removal pipe one time, the present invention can be used for a plurality of years, present invention underground water with alkali enters into the alkali removal pipe and gets removed through the leakage function, and the alkali removal effect is very good. Land above the alkali removal pipe can be used for plantation, which saves land occupied by an alkali removal channel, and the land utilization rate and economic benefits of land are increased, and the production cost is lowered.

Description

technical field [0001] The invention relates to an alkali drainage technology for saline-alkali land, in particular to an underground pipeline type filtration alkali drainage technology. Background technique [0002] Among the traditional soil salinity improvement methods, most of them use the method of digging alkali drainage ditches on the land at a certain distance, and drain the saline-alkali water through groundwater infiltration. The depth of the ditches is generally 1-5 meters. The width of the soil reaches tens of meters, which occupies a large area of ​​arable land and blocks the land, which brings inconvenience to the operation of large-scale agricultural machinery. Maintenance is required every 1 to 2 years, which greatly increases the production cost. Chinese patent CN1736885 discloses a technology of depressurization and alkali discharge by connecting wells. This technology is to arrange alkali discharge wells at intervals under a certain area of ​​land, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B11/00E02D3/00B09C1/02A01B77/00
Inventor 朱明亮
Owner 朱明亮
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