CN212944629U - Vertical separation system for polluted site - Google Patents
Vertical separation system for polluted site Download PDFInfo
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- CN212944629U CN212944629U CN202021744082.8U CN202021744082U CN212944629U CN 212944629 U CN212944629 U CN 212944629U CN 202021744082 U CN202021744082 U CN 202021744082U CN 212944629 U CN212944629 U CN 212944629U
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Abstract
The utility model discloses a receive perpendicular separation system in pollution place, it includes underground continuous wall, high pressure jet grouting secant pile, underground continuous wall encircles and receives the perpendicular setting in pollution place, high pressure jet grouting secant pile sets up a plurality ofly, and each high pressure jet grouting secant pile distributes in adjacent underground continuous wall seam inboard and inflection point reentrant corner department. The vertical blocking system for the polluted site provided by the invention mainly comprises an underground continuous wall and a high-pressure jet grouting secant pile, meets the anti-seepage requirement, and has the characteristics of wide applicable geological conditions, reliable technology and easiness in engineering implementation.
Description
Technical Field
The utility model belongs to soil remediation field, specifically speaking relate to a receive perpendicular separation system in pollution place.
Background
With the rapid development of social economy, the accelerated urbanization process and the deepened adjustment of industrial structures, a plurality of main urban areas of cities are subjected to non-ferrous metal smelting, petroleum processing, chemical industry, coking, electroplating, tanning and the migration of enterprises in industries such as dangerous waste storage, utilization and disposal activities out of the cities, a large number of sites with environmental risks are left, heavy metals or organic pollutants in the polluted sites pollute soil and underground water for a long time, the ecological environment and the human health are greatly threatened, and the pollution risk of the sites for redevelopment of the cities is effectively controlled, so that the method becomes the key of the soil pollution prevention and control work.
The risk blocking can cut off the exposure path and pollution plume migration of pollutants in the polluted site, and can not thoroughly remove pollutants or reduce the concentration of the pollutants in the polluted site, so that the risk blocking technology can be independently used for risk control of the polluted land, and can also be used in combination with other soil remediation technologies to achieve the remediation goal.
In a place where partial soil and underground water are polluted, the in-situ remediation technology is independently carried out or the underground water pumping treatment difficulty and the treatment amount are large, and a waterproof curtain needs to be built by matching with the vertical barrier technology, so that the remediation activity is smoothly developed.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problems, a vertical blocking system for a contaminated site is proposed, which can be used for blocking a target site pollution source such as treatment and restoration or risk control of an organic contaminated site, a heavy metal contaminated site and a composite contaminated site, so as to ensure smooth proceeding of the treatment and restoration of the contaminated site, and realize risk control and safe utilization of the contaminated site, such as soil around the contaminated site, underground water environment, human health and the like.
In order to achieve the purpose, the following technical scheme is provided:
the vertical blocking system for the polluted site is characterized by comprising an underground continuous wall, wherein the underground continuous wall is vertically arranged around the polluted site.
Furthermore, the vertical blocking system for the polluted site further comprises a plurality of high-pressure jet grouting secant piles, and each high-pressure jet grouting secant pile is distributed on the inner side of the joint of the adjacent underground continuous walls and at the corner internal corner.
Further, the thickness of the underground continuous wall is 0.6m-1.5 m.
Preferably, the underground continuous wall is composed of a plurality of continuous walls of unit groove sections, and the length of each unit groove section of the underground continuous wall is 4-6 m.
Further, the underground continuous wall is a plastic concrete continuous wall or an impervious concrete continuous wall.
Furthermore, the high-pressure jet grouting occlusive pile is formed by mutually occluding 2-4 jet grouting piles.
Further, the pile diameter of the jet grouting pile is 0.5-1.2 m.
Further, the construction depth of the vertical barrier system of the polluted site is 0.5m-3m below a water-proof layer top plate below the polluted area
Advantageous effects
The utility model provides a receive perpendicular separation system in pollution place, this receive perpendicular separation system in pollution place mainly comprises underground continuous wall, high pressure jet grouting secant pile jointly and satisfies the separation system of prevention of seepage requirement, has the characteristics that suitable geological conditions is wide, the technique is reliable, easily the engineering is implemented.
Drawings
FIG. 1 is a schematic view of a vertical barrier system in combination with a contaminated site according to an embodiment 1 of the present invention;
FIG. 2 is a schematic view showing the structure of a vertical barrier system according to embodiment 1 of the present invention;
in the drawings: 100-guide wall, 200-polluted site vertical blocking system, 210-underground continuous wall, 220-high-pressure jet grouting secant pile, 300-waterproof layer top plate, 400-waterproof layer and 500-polluted site.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following description, together with the drawings of the present invention, clearly and completely describes the technical solution of the present invention, and based on the embodiments in the present application, other similar embodiments obtained by those skilled in the art without creative efforts shall all belong to the protection scope of the present application. In addition, directional terms such as "upper", "lower", "left", "right", etc. in the following embodiments are directions with reference to the drawings only, and thus, the directional terms are used for illustration and not for limitation of the present invention.
Detailed description of the preferred embodiment 1
In the target site of the embodiment, due to production accidents of peripheral petrochemical plants, organic pollutants such as petroleum hydrocarbon in the soil of the underground layer and underground water exceed the standard.
In view of the above, a contaminated site vertical barrier system 200 is provided, as shown in fig. 1-2, which includes an underground continuous wall 210, wherein the underground continuous wall 210 is vertically disposed around a contaminated site 500.
Further, the vertical blocking system 200 for the polluted site further comprises a plurality of high-pressure jet grouting secant piles 220, wherein the high-pressure jet grouting secant piles 220 are arranged, and each high-pressure jet grouting secant pile 220 is distributed on the inner side of the joint of the adjacent underground continuous walls 210 and at the corner reentrant corner.
Preferably, the underground continuous wall 210 has a thickness of 0.6m to 1.5 m.
Preferably, the underground continuous wall is composed of a plurality of continuous walls of unit groove sections, and the length of each unit groove section of the underground continuous wall is 4-6 m.
Further, the underground continuous wall 210 is cast in situ by a material having a permeability coefficient of less than 10-6 cm/s.
Preferably, the underground diaphragm wall 210 is cast in situ by plastic concrete or impervious concrete.
In this embodiment, the underground diaphragm wall 210 is cast in place of impervious concrete.
Preferably, the permeability coefficient of the contaminated site vertical barrier system 200 is 10 or less-7cm/s。
Further, the high-pressure jet grouting occlusive pile 220 is formed by mutually occluding 2 to 4 jet grouting piles, and the pile diameter of each jet grouting pile is 0.5 to 1.2 m.
Specifically, the contaminated site vertical barrier system 200 enters the stroke formation at a depth of 0.5m or more.
Further, the vertical barrier system 200 of the contaminated site is constructed to a depth of 0.5m to 3m below the top plate of the water barrier layer below the contaminated area.
A specific construction process of the vertical barrier system 200 for the polluted site comprises the following steps:
s1, determining the polluted range of the site: and determining the pollution range of the site according to the site investigation and evaluation result.
S2, setting a guide wall 100: according to the site utilization status and the geological conditions, the guide wall 100 is built at a proper position outside the range of the polluted site 500.
S3, grooving construction: and determining the position of the water-resisting layer top plate 300 according to the site geological conditions, and calculating the grooving depth of the vertical blocking system 200 of the polluted site.
S4, building underground continuous walls 210: and sequentially pouring impervious materials at the hole sections after grooving.
S5, constructing the high-pressure jet grouting occlusive pile 220: and high-pressure jet grouting occlusive piles 220 are arranged at the inner sides of the joints of the adjacent underground continuous walls 210 and the internal corners of the inflection points.
Further, the setting position of the guide wall 100 is 1m-10m outside the range of the polluted site 500.
Further, the trenching depth of the contaminated site vertical barrier system 200 is 0.5m to 3m below the water-barrier roof 300 below the contaminated area.
Preferably, the guide wall 100 is an inverted L-shaped guide wall 100.
Specifically, the high-pressure jet grouting secant pile 220 is constructed by a triple pipe method, the volume ratio of water to cement is 1:1, the pile diameter is 0.5m, and the inter-pile meshing is 0.15 m. The high-pressure rotary spraying secant pile 220 constructed by the triple pipe method can effectively fill and plug gaps and corners between the adjacent underground continuous walls 210, and the high-pressure rotary spraying secant pile 220 and the walls of the underground continuous walls 210 are connected to form a solidification body with controllable properties, so that the joints and corners of the adjacent underground continuous walls 210 can be effectively reinforced, and the seepage-proofing effect is enhanced.
Specifically, according to the field utilization status and the terrain, a central line for constructing the underground continuous wall 210 is determined by using a measuring instrument, and the underground continuous wall 210 and the high-pressure jet grouting secant pile 220 are arranged to form a vertical blocking system in a water-stop curtain form.
According to the invention, by arranging the vertical blocking system 200 for the polluted site, on one hand, the smooth development of the treatment and remediation work of the polluted soil and underground water in the site is ensured, the treatment and remediation effect is ensured to reach the standard, on the other hand, the polluted soil and underground water outside the site are prevented from diffusing into the site, and the safe and environment-friendly operation of facilities in the site is ensured.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, i.e. the present invention is intended to cover all equivalent variations and modifications within the scope of the present invention.
Claims (7)
1. The utility model provides a contaminated site vertical separation system, its characterized in that includes underground continuous wall, underground continuous wall encircles and is contaminated site vertical setting, still includes the high pressure jet grouting secant pile, the high pressure jet grouting secant pile sets up a plurality ofly, and each high pressure jet grouting secant pile distributes in adjacent underground continuous wall seam inboard and inflection point reentrant corner department.
2. The contaminated site vertical barrier system of claim 1, wherein the underground continuous wall has a thickness of 0.6m to 1.5 m.
3. The contaminated site vertical barrier system according to claim 1, wherein said underground continuous wall is composed of a continuous wall of a plurality of unit cell segments, and said unit cell segments of said underground continuous wall have a length of 4m to 6 m.
4. The contaminated site vertical barrier system of claim 1, wherein the underground continuous wall is a plastic concrete continuous wall or an impervious concrete continuous wall.
5. The vertical barrier system for a polluted site according to claim 1, wherein the high-pressure jet grouting occlusive pile is formed by mutually occluding 2 to 4 jet grouting piles.
6. The contaminated site vertical barrier system of claim 5, wherein the jet grouting pile has a pile diameter of 0.5-1.2 m.
7. The contaminated site vertical barrier system according to any one of claims 1 to 6, wherein the contaminated site vertical barrier system is constructed to a depth of 0.5m to 3m below a top deck of a water barrier below the contaminated area.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021744082.8U CN212944629U (en) | 2020-08-19 | 2020-08-19 | Vertical separation system for polluted site |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021744082.8U CN212944629U (en) | 2020-08-19 | 2020-08-19 | Vertical separation system for polluted site |
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| CN212944629U true CN212944629U (en) | 2021-04-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111945791A (en) * | 2020-08-19 | 2020-11-17 | 北京首创环境科技有限公司 | Vertical separation system for polluted site and construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111945791A (en) * | 2020-08-19 | 2020-11-17 | 北京首创环境科技有限公司 | Vertical separation system for polluted site and construction method |
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