CN108040524B - Soil improvement method - Google Patents

Soil improvement method Download PDF

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Publication number
CN108040524B
CN108040524B CN201711309558.8A CN201711309558A CN108040524B CN 108040524 B CN108040524 B CN 108040524B CN 201711309558 A CN201711309558 A CN 201711309558A CN 108040524 B CN108040524 B CN 108040524B
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soil
layer
groove
clamping
vacuum
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CN108040524A (en
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李静
李夺
雷彩云
郝跃龙
张欢
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Beijing Lvjinghua Ecological Garden Co ltd
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Beijing Lvjinghua Ecological Garden Co ltd
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01BSOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B79/00Methods for working soil
    • A01B79/02Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01BSOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B79/00Methods for working soil

Abstract

The invention discloses a soil improvement method, which comprises the following steps of S1, inserting a vacuum tube into an original soil layer; s2, sequentially paving a sponge layer, a sandstone layer and a sealing film on the original soil layer; s3, penetrating the vacuum tube through the penetrating groove; s6, installing a vacuum pump at one end of the vacuum pipe, starting the vacuum pump, and pressing the soil improvement liquid in the sponge layer into the original soil layer under the driving of the vacuum pump, so that the pores and the moisture of the hardened soil layer are increased; s7, sequentially removing the vacuum pump, the sealing film, the sand layer, the sponge layer and the vacuum tube; and S8, ploughing the land by using a rotary cultivator, applying organic fertilizer on a soil layer, and paving a layer of loose soil on the organic fertilizer. When the vacuum pump is in action, the air pressure in the soil can be reduced, and the soil improvement liquid in the sponge layer permeates into the original soil layer under the action of the atmospheric pressure, so that the hardening of the soil layer is improved. Meanwhile, the holes of the original soil layer can be enlarged in the infiltration process, and the soil hardening is improved, and meanwhile, the subsequent ploughing is facilitated.

Description

Soil improvement method
Technical Field
The invention relates to the technical field of soil improvement, in particular to a soil improvement method.
Background
Soil hardening is an important problem in the agricultural sustainable development process.
With the increasing importance of agricultural sustainable development in various countries in the world, higher requirements are put forward on the sustainability of the soil production capacity. Particularly, under the severe conditions of large population, less cultivated land and grain safety in China, how to ensure the sustainable production capacity of soil is particularly important.
Soil hardening is one of important manifestations of soil degradation, especially subsurface soil hardening, restricts the plant root system to grow to the underground, and in the middle and later stages of plant growth, if meeting under the condition that rainfall is few and evaporation is big, soil hardening seriously influences the absorption of plant to moisture, leads to the soil can't plant the plant. Therefore, a method for improving soil hardening is urgently needed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a soil improvement method which can improve the soil state of hardened soil and enable the hardened soil to be used for plant cultivation again.
In order to achieve the purpose, the invention provides the following technical scheme:
a method of soil improvement comprising the steps of:
s1, inserting a vacuum tube into the original soil layer through a drilling machine; the vacuum pipe is uniformly distributed with a plurality of vacuum pipes in the original soil layer, the lower end of the vacuum pipe is fixedly provided with a drill bit, the side wall of the vacuum pipe is provided with a through hole, and the through hole is provided with a breathable water-stop film;
s2, paving a sponge layer and a sandstone layer on the original soil layer in sequence; soil improvement liquid for improving the hardening of the original soil layer is fully washed in the sponge layer;
s3, laying a plurality of layers of sealing films on the upper surface of the soil body treated in the step S2 in a layered mode, and attaching the sealing films to the soil body;
s4, digging a sealing ditch, digging the sealing ditch along the outer edge of the periphery of the prepressing area, embedding four film edges of a sealing film in the sealing ditch, and forming a sealing cover body with five sealed surfaces;
s5, cutting a penetrating groove at the position of the sealing film corresponding to the vacuum tube, penetrating the vacuum tube through the penetrating groove, sleeving a clamping sleeve outside the vacuum tube, and enabling the sealing film to be tightly abutted against the outer wall of the vacuum tube by the clamping sleeve;
s6, installing a vacuum pump at one end of the vacuum pipe, starting the vacuum pump, and pressing the soil improvement liquid in the sponge layer into the original soil layer under the driving of the vacuum pump, so that the pores and the moisture of the hardened soil layer are increased;
s7, sequentially removing the vacuum pump, the sealing film, the sand layer, the sponge layer and the vacuum tube;
and S8, ploughing the land by using a rotary cultivator, applying organic fertilizer on a soil layer, and paving a layer of loose soil on the organic fertilizer.
By adopting the technical scheme, the vacuum pump can reduce the air pressure in the soil when acting, and the soil improvement liquid in the sponge layer permeates into the original soil layer under the action of the atmospheric pressure, thereby improving the hardening of the soil layer. Meanwhile, the holes of the original soil layer can be enlarged in the infiltration process, and the soil hardening is improved, and meanwhile, the subsequent ploughing is facilitated. The soil improvement liquid and the soil can be further mixed by plowing, so that the function of the soil improvement liquid is fully exerted, and the hardening problem of a soil layer is improved. The fertilizer is applied again after ploughing, and loose soil is paved, so that organic fertilizer can be better mixed into the original soil, the effects of water and fertilizer retention are achieved, and the probability of secondary hardening of the subsequent soil is reduced.
The invention is further provided with: in step S6, all the vacuum tubes are connected to a connecting main pipe, the vacuum pump is mounted on the connecting main pipe, and the opening and closing valves are adjusted to equalize the amount of air discharged from each vacuum tube when the vacuum pump is started.
By adopting the technical scheme, the soil improvement liquid can be uniformly infiltrated into all positions of the original soil layer under the action of atmospheric pressure as far as possible, so that the soil hardening is better improved. Meanwhile, the resistance applied during the subsequent plowing of the land is more uniform, and the condition that plowing is blocked due to the fact that one land is too severely hardened is reduced.
The invention is further provided with: after step S6, the vacuum pump is removed, the air supply fan is installed at one end of the connection header pipe, and the opening and closing valve is adjusted to equalize the air volume supplied to each vacuum pipe by the air supply fan.
By adopting the technical scheme, the air blown by the air supply machine can increase the pores of the soil layer after entering the soil layer, improve soil hardening, loosen the soil layer and facilitate subsequent ploughing of the soil. Meanwhile, the soil improvement liquid can be driven to move in the soil, so that the soil improvement liquid can be more uniformly distributed in the soil. The air supply machine supplies equal air quantity to each vacuum tube, so that the soil improvement liquid can be blown to each position of the original soil layer under the action of the air supplied by the air supply machine as uniformly as possible, and the soil hardening is better improved. Meanwhile, the resistance applied during the subsequent plowing of the land is more uniform, and the condition that plowing is blocked due to the fact that one land is too severely hardened is reduced.
The invention is further provided with: a humidity sensor is arranged on one side of the sponge layer, back to the gravel layer, and the humidity sensor is electrically connected with a controller; when the vacuum pump works, if the humidity measured by the humidity sensor is reduced to a preset value, the controller drives the vacuum pump to stop working.
By adopting the technical scheme, the depth of the soil improvement liquid seeping into the original soil layer can be deduced according to the reduction amount of the soil improvement liquid in the sponge layer. Namely, the depth of the original soil layer extending into the soil improvement liquid can be controlled by controlling the preset value. Under the condition that the total amount of the soil improvement liquid is constant, the soil improvement liquid is distributed in a required soil layer as much as possible, and the proportion of the soil improvement liquid in the soil layer is as much as possible, so that the soil improvement liquid is fully utilized. Meanwhile, the situation that the soil improvement liquid is collected beside the vacuum pipe due to overlong vacuumizing time and the soil improvement liquid distributed in the original soil layer is too little can be prevented.
The invention is further provided with: when the air supply fan works, if the humidity measured by the humidity sensor is increased to a preset value, the controller drives the air supply fan to stop working.
Through adopting above-mentioned technical scheme to prevent because the air feed time overlength of air feed machine, lead to soil improvement liquid to all be blown back the soil upper strata again, distribute soil improvement liquid in the soil of required degree of depth as far as, further improvement is to the improvement efficiency of soil.
The invention is further provided with: and a heater is arranged on one side of the air supply machine, the heater is arranged on the connecting main pipe, and air generated by the air supply machine is blown into the vacuum pipe after being heated by the heater.
Through adopting above-mentioned technical scheme, increase air current atmospheric pressure through raising the temperature to can be faster send into the air current in the soil, enlarge the equipartition speed of soil hole and soil improvement liquid, improve the efficiency of construction.
The invention is further provided with: the penetrating grooves are in a shape of Chinese character mi.
Through adopting above-mentioned technical scheme to increase when the clamping sleeve presss from both sides tight seal membrane and vacuum tube and the area of contact of seal membrane, thereby improved the leakproofness of seal membrane and vacuum tube junction, when making the vacuum pump to the vacuum tube evacuation, have better guide effect to soil improvement liquid.
The invention is further provided with: the clamping sleeve comprises a first clamping plate and a second clamping plate which are arranged in a C shape, the first clamping plate is rotatably connected to the second clamping plate, flexible rubber layers are arranged on the inner walls of the first clamping plate and the second clamping plate, a clamping groove is formed in one side of the first clamping plate opposite to the second clamping plate, a spring bean jumping is arranged on the inner wall of the clamping groove, a clamping block which can be embedded in the clamping groove is fixedly arranged on one side of the second clamping plate opposite to the first clamping plate, the clamping block is flexibly arranged, an embedded groove is formed in one side of the clamping block opposite to the spring bean jumping, and when the clamping block is embedded in the clamping groove, the spring bean jumping is embedded in the embedded groove.
Through adopting above-mentioned technical scheme, when installing the clamping sleeve, rotate first splint relatively first splint, and then make the clamping sleeve open, then the cover is established outside the vacuum tube, closes up first splint and second splint, and the seal membrane is located between clamping sleeve and the vacuum tube this moment. And continuously folding the first clamping plate and the second clamping plate to clamp the clamping block into the clamping groove, and embedding the spring jumping beans into the embedding groove, so that the first clamping plate is fixed relative to the second clamping plate. At the moment, the sealing film is tightly pressed outside the vacuum tube by the first clamping plate and the second clamping plate so as to improve the sealing performance of the joint of the sealing film and the vacuum tube. The clamping sleeve is convenient to install, does not need to be sleeved downwards from one end of the vacuum tube with the help of external tools, and improves the construction efficiency.
The invention is further provided with: a through groove perpendicular to the clamping groove is formed in the first clamping plate, a push rod is connected in the through groove in a sliding mode, the push rod is arranged outwards in an inclined mode relative to one side of the clamping block to form a first guide surface, the clamping block is arranged inwards in an inclined mode relative to one side of the push rod to form a second guide surface, and the second guide surface abuts against the second guide surface; when the push rod slides inwards, the push rod drives the clamping block to move towards the direction away from the clamping groove, so that the spring jumps and leaves the caulking groove.
Through adopting above-mentioned technical scheme, when needing to dismantle the seal membrane, can press the push rod, make the push rod move towards the fixture block, at this moment under the effect of first spigot surface and second spigot surface, the fixture block moves towards the direction of keeping away from first splint, makes the spring jump beans leave the caulking groove, then directly break off first splint and second splint again can, make the more convenient dismantlement of clamp sleeve.
The invention is further provided with: an accommodating groove is formed in the side wall of the through groove along the length direction of the through groove, a connecting block embedded in the accommodating groove is fixedly arranged on one side of the push rod, and a reset spring is arranged between the connecting block and the end wall of one end of the accommodating groove; when the return spring is in a natural state, the lower side of the first guide surface abuts against the upper side of the second guide surface.
Through adopting above-mentioned technical scheme, the holding tank has a limiting displacement to the connecting block to make the push rod stably install always on pressing from both sides tight sheathe, prevent that the push rod from losing. Meanwhile, the reset spring can keep the push rod in a state of retracting into the through groove, so that the resistance to be overcome when the clamping block is clamped into the clamping groove is reduced, and the clamping sleeve is convenient to mount.
The invention has the following advantages: 1. the soil improvement solution can be uniformly distributed in hardened soil, soil pores are increased, the soil is improved, and the hardening degree is reduced; 2. the treatment efficiency is higher.
Drawings
FIG. 1 is a schematic structural diagram according to a first embodiment;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is a schematic structural diagram of the second embodiment when the process proceeds to step S7;
FIG. 4 is an enlarged view at B in FIG. 3;
FIG. 5 is a schematic view of the electrical connections of the humidity sensor, the controller and the vacuum pump in the second embodiment;
FIG. 6 is a partial schematic view of a sealing film according to a second embodiment;
FIG. 7 is an enlarged view at C of FIG. 3;
FIG. 8 is a schematic structural view when the second embodiment proceeds to step S9;
fig. 9 is a schematic diagram of the electrical connections of the humidity sensor, the controller and the blower in the second embodiment.
Reference numerals: 1. a clamping sleeve; 2. a first splint; 3. a second splint; 4. a circular groove; 5. a flexible rubber layer; 6. a card slot; 7. jumping beans by a spring; 8. a through groove; 9. a push rod; 10. accommodating grooves; 11. connecting blocks; 12. a return spring; 13. a clamping block; 14. caulking grooves; 15. a first guide surface; 16. a second guide surface; 17. a vacuum tube; 17.1, a drill bit; 18. a through hole; 19. a breathable water-stop film; 20. adjusting the valve; 21. a sponge layer; 22. a sandstone layer; 23. a humidity sensor; 24. a controller; 25. a sealing film; 26. a groove is arranged in a penetrating way; 27. a vacuum pump; 28. a heater; 29. a fan; 30. is connected with the main pipe.
Detailed Description
The invention is further described with reference to the accompanying drawings.
The first embodiment is as follows:
as shown in figure 1, the clamping sleeve 1 comprises a first clamping plate 2 and a second clamping plate 3, the cross sections of the first clamping plate 2 and the second clamping plate 3 are both C-shaped, and the first clamping plate 2 and the second clamping plate 3 are symmetrically arranged. The first clamping plate 2 and the second clamping plate 3 are connected in a rotating way, and the connecting point is positioned at the outer side edge of the first clamping plate 2 and the second clamping plate 3. When the two ends of the first clamping plate 2 and the second clamping plate 3 are mutually butted, the inner walls of the first clamping plate 2 and the second clamping plate 3 form a circular groove 4. The inner walls of the first clamping plate 2 and the second clamping plate 3 are both provided with a flexible rubber layer 5.
As shown in fig. 2, a clamping groove 6 is formed in the side wall of the end, far away from the rotating end, of the first clamping plate 2, the clamping groove 6 faces the second clamping plate 3, and a spring jumping bean 7 is arranged on the inner wall of the clamping groove 6. The lateral wall of the outward side of the clamping groove 6 is provided with a through groove 8, and the through groove 8 is perpendicular to the clamping groove 6. A push rod 9 is embedded in the through groove 8. Holding tank 10 has been seted up along its length direction to logical 8 lateral walls, and push rod 9 one side is fixed to be provided with connecting block 11, and connecting block 11 inlays and locates in holding tank 10 and sliding connection in holding tank 10. Be equipped with reset spring 12 between connecting block 11 and holding tank 10 one end endwall, reset spring 12 both ends are fixed connection respectively in connecting block 11 and holding tank 10 endwalls. The push rod 9 is inclined towards the second clamping plate 3 towards one end of the clamping groove 6 to form a first guide surface 15.
As shown in fig. 2, a clamping block 13 is fixedly arranged on one side of the second clamping plate 3 opposite to the first clamping plate 2, the clamping groove 6 is flexibly arranged, and a caulking groove 14 is formed in a side wall of one side of the clamping block 13. The inward end of the latch 13 is inclined toward the through slot 8 to form a second guide surface 16, and the second guide surface 16 is parallel to the first guide surface 15.
If need merge first splint 2 and second splint 3, relative first splint 2 rotates second splint 3, makes 2 both ends of first splint and 3 both ends butts of second splint, and fixture block 13 inlays locates in draw-in groove 6, and spring jumping beans 7 inlays locates in caulking groove 14 to make first splint 2 and second splint 3 fixed connection together. At this time, the return spring 12 is in a natural state, and the lower side of the first guide surface 15 abuts against the upper side of the second guide surface 16.
If the first clamping plate 2 and the second clamping plate 3 need to be separated, the push rod 9 is pushed inwards, the push rod 9 drives the clamping block 13 to move outwards, so that the spring jumping beans 7 leave the embedded groove 14, the second clamping plate 3 rotates relative to the first clamping plate 2, and the clamping block 13 leaves the clamping groove 6.
Example two:
a method of soil improvement comprising the steps of:
s1, as shown in figure 3, inserting the vacuum pipe 17 into the original soil layer through a drilling machine; a plurality of vacuum pipes 17 are uniformly distributed in the original soil layer, and a drill bit 17.1 is fixedly arranged at the lower end of each vacuum pipe 17 so as to conveniently insert the vacuum pipes 17 into the original soil layer; as shown in fig. 4, a through hole 18 is formed on the side wall of the vacuum tube 17, and a breathable water-proof film 19 is arranged on the through hole 18; as shown in fig. 3, the vacuum tube 17 is provided with an adjusting valve 20, and the adjusting valve 20 can be used for controlling the opening degree of the vacuum tube 17;
s2, as shown in figure 3, sequentially paving a sponge layer 21 and a sandstone layer 22 on the original soil layer; the sponge layer 21 is fully washed with soil improvement liquid for improving the original soil hardening; a plurality of humidity sensors 23 are arranged on one side of the sponge layer 21 back to the gravel layer, and the humidity sensors 23 are uniformly distributed on the sponge layer 21; as shown in fig. 5, the humidity sensor 23 is electrically connected to the controller 24;
s3, as shown in figure 3, laying a plurality of sealing films 25 on the upper surface of the soil body after the treatment of S2 in a layered mode, and attaching the sealing films 25 to the soil body;
s4, digging a sealing ditch, digging the sealing ditch along the outer edge of the periphery of the prepressing area, embedding four film edges of a sealing film 25 in the sealing ditch, and forming a sealing cover body with five sealed surfaces;
s5, as shown in figure 6, cutting a through groove 26 at the position of the sealing film 25 corresponding to the vacuum tube 17, wherein the through groove 26 is shaped like a Chinese character 'mi'; as shown in fig. 7, the vacuum tube 17 is inserted through the insertion groove 26, the clamping sleeve 1 is fixedly sleeved outside the vacuum tube 17, and the sealing film 25 is tightly pressed against the outer wall of the vacuum tube 17 through the first clamping plate 2 and the second clamping plate 3, so as to ensure the sealing performance of the sealing film 25 at the vacuum tube 17;
s6, as shown in FIG. 3, connecting all the vacuum tubes 17 to a connecting main pipe 30, installing a vacuum pump 27 on the connecting main pipe 30, adjusting the adjusting valve 20 to make the amount of outward air exhaust of each vacuum tube 17 equal when the vacuum pump 27 is started; the controller 24 is electrically connected to the vacuum pump 27;
s7, starting the vacuum pump 27, and pressing the soil improvement liquid in the sponge layer 21 into the original soil layer under the driving of the vacuum pump 27, so that the pores and the water content of the hardened soil layer are increased, and the hardening phenomenon of the soil is improved; if more than half of the humidity measured by the humidity sensors 23 is reduced to a preset value, the controller 24 drives the vacuum pump 27 to stop working;
when the humidity detected by the humidity sensor 23 tends to air humidity, the depth of the soil improvement solution penetrating into the soil layer is set to be H, the depth of the hardened soil layer which needs to be improved actually is set to be H, the original humidity of the humidity sensor 23 when the vacuum pump 27 is not operated is set to be phi 0, and the preset value is phi 1; calculating a preset value phi 1 according to a formula (phi 0-phi 1)/phi 0=1.3 x H/H;
s8, as shown in FIG. 8, the vacuum pump 27 is removed, the heater 28 and the air supply fan 29 are sequentially installed on the connecting manifold 30, and the heating pipe is positioned on one side of the air supply fan 29 close to the vacuum pipe 17; adjusting the adjusting valve 20 to ensure that the air quantity given to each vacuum tube 17 is equal when the air supply fan 29 is started; as shown in fig. 9, the controller 24 is electrically connected to the blower 29;
s9, starting the air supply fan 29 and the heater 28, blowing the air generated by the air supply fan 29 into the vacuum pipe 17 after being heated by the heater 28, and driving the soil improvement liquid in the soil layer to be uniformly distributed in the soil layer after passing through the air-permeable water-proof film 19, and simultaneously increasing the pores in the soil layer, further improving the hardening phenomenon of the soil; if more than half of the humidity measured by the humidity sensors 23 is increased to a preset value, the controller 24 drives the air supply fan 29 to stop working; setting the preset value to be phi 2; calculating a preset value phi 1 according to a formula (phi 0-phi 2)/phi 0=1.1 x H/H;
s10, closing the heater 28, cooling the heater 28 and the vacuum tube 17, and then sequentially removing the heater 28, the air supply machine 29, the sealing film 25, the sand layer 22, the sponge layer 21 and the vacuum tube 17;
and S11, ploughing the land by using a rotary cultivator, applying organic fertilizer on a soil layer, and paving a layer of loose soil on the organic fertilizer.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims (5)

1. A soil improvement method is characterized in that: comprises the following steps of (a) carrying out,
s1, inserting the vacuum pipe (17) into the original soil layer through a drilling machine; a plurality of vacuum pipes (17) are uniformly distributed in the original soil layer, the lower end of each vacuum pipe (17) is fixedly provided with a drill bit (17.1), the side wall of each vacuum pipe (17) is provided with a through hole (18), and each through hole (18) is provided with a breathable water-stop film (19);
s2, paving a sponge layer (21) and a sandstone layer (22) on the original soil layer in sequence; soil improvement liquid for improving the original soil hardening is fully absorbed in the sponge layer (21); a humidity sensor (23) is arranged on one side of the sponge layer (21) back to the gravel layer, and the humidity sensor (23) is electrically connected with a controller (24);
s3, laying a plurality of layers of sealing films (25) on the upper surface of the soil body treated in the step S2 in a layered mode, and attaching the sealing films (25) to the soil body;
s4, digging a sealing groove, digging the sealing groove along the outer edge of the periphery of a preset region needing to be improved, embedding four film edges of a sealing film (25) in the sealing groove, and forming a sealing cover body with five sealed surfaces;
s5, cutting a penetrating groove (26) at the position of the sealing film (25) corresponding to the vacuum tube (17), penetrating the vacuum tube (17) through the penetrating groove (26), sleeving a clamping sleeve (1) outside the vacuum tube (17), wherein the clamping sleeve (1) can tightly press the sealing film (25) against the outer wall of the vacuum tube (17);
s6, installing a vacuum pump (27) at one end of the vacuum pipe (17), starting the vacuum pump (27), and pressing the soil improvement liquid in the sponge layer (21) into the original soil layer by atmospheric pressure under the driving of the vacuum pump (27), so that the pores and the moisture of the hardened soil layer are increased; when the vacuum pump (27) works, if the humidity measured by the humidity sensor (23) is reduced to a preset value, the controller (24) drives the vacuum pump (27) to stop working;
s7, sequentially removing the vacuum pump (27), the sealing film (25), the sand layer (22), the sponge layer (21) and the vacuum tube (17); a fan (29) is arranged at one end of the connecting main pipe (30), and the regulating valve (20) is regulated to ensure that the air quantity given to each vacuum pipe (17) by the fan (29) is equal; when the air supply fan (29) works, if the humidity measured by the humidity sensor (23) is increased to a preset value, the controller (24) drives the air supply fan (29) to stop working;
s8, ploughing the land by using a rotary cultivator, applying organic fertilizer on a soil layer, and paving a layer of loose soil on the organic fertilizer;
the clamping sleeve (1) comprises a first clamping plate (2) and a second clamping plate (3) which are C-shaped in arrangement, the first clamping plate (2) is rotatably connected to the second clamping plate (3), the inner walls of the first clamping plate (2) and the second clamping plate (3) are respectively provided with a flexible rubber layer (5), one side of the first clamping plate (2) opposite to the second clamping plate (3) is provided with a clamping groove (6), the inner wall of the clamping groove (6) is provided with a spring jumping bean (7), one side of the second clamping plate (3) opposite to the first clamping plate (2) is fixedly provided with a clamping block (13) which can be embedded in the clamping groove (6), the clamping block (13) is flexibly arranged, one side of the clamping block (13) opposite to the spring jumping bean (7) is provided with an embedding groove (14), and when the clamping block (13) is embedded in the clamping groove (6), the spring jumping bean (7) is embedded in the embedding groove (.
2. A method of soil improvement as claimed in claim 1, wherein: a heater (28) is installed on one side of the air supply fan (29), the heater (28) is installed on the connecting main pipe (30), and air generated by the air supply fan (29) is heated by the heater (28) and then blown into the vacuum pipe (17).
3. A method of soil improvement as claimed in claim 2, wherein: the through groove (26) is shaped like a Chinese character mi.
4. A method of soil improvement as claimed in claim 3, wherein: a through groove (8) perpendicular to the clamping groove (6) is formed in the first clamping plate (2), a push rod (9) is connected in the through groove (8) in a sliding mode, the push rod (9) is arranged outwards in an inclined mode relative to one side of the clamping block (13) to form a first guide surface (15), the clamping block (13) is arranged inwards in an inclined mode relative to one side of the push rod (9) to form a second guide surface (16), and the first guide surface (15) abuts against the second guide surface (16); when the push rod (9) slides inwards, the push rod (9) drives the clamping block (13) to move towards the direction away from the clamping groove (6), so that the spring jumping beans (7) leave the embedding groove (14).
5. A method of soil improvement as claimed in claim 4, wherein: an accommodating groove (10) is formed in the side wall of the through groove (8) along the length direction of the side wall, a connecting block (11) embedded in the accommodating groove (10) is fixedly arranged on one side of the push rod (9), and a return spring (12) is arranged between the connecting block (11) and the end wall of one end of the accommodating groove (10); when the return spring (12) is in a natural state, the lower side of the first guide surface (15) abuts against the upper side of the second guide surface (16).
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CN114303505B (en) * 2021-12-31 2022-11-04 广东如春生态集团有限公司 A soil improvement structure for inferior land formula red layer desert

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