CN111924905B

CN111924905B - Method for realizing precast concrete permeable reactive wall frame body and outer frame device thereof

Info

Publication number: CN111924905B
Application number: CN202010787137.1A
Authority: CN
Inventors: 徐方才; 孙亮; 杨晓蓉; 江志安; 赵明华; 苗志斌; 胡微; 赵克欣; 翁嘉玲; 叶玉麟; 李云松
Original assignee: Sinohydro Foundation Engineering Co Ltd
Current assignee: Sinohydro Foundation Engineering Co Ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2023-01-31
Anticipated expiration: 2040-08-07
Also published as: CN111924905A

Abstract

The invention discloses a method for realizing a precast concrete permeable reactive wall frame body and an outer frame device, wherein the method comprises the following steps: excavating underground slotted holes; arranging an outer frame device prefabricated by concrete in an underground slotted hole, wherein the outer frame device comprises one or more layers of frame units, and each layer of frame unit comprises a plurality of frame units with preset seepage holes for water to flow out; arranging a water stopping device which can block a water passing channel between the adjacent frame units so that water flows through the preset seepage holes between the adjacent frame units, and forming a precast concrete permeable reactive wall frame body through the outer frame device and the water stopping device; the frame unit is internally provided with one or more sashes arranged at intervals, and reaction media for treating underground polluted water bodies are arranged in the sashes. The method can realize the construction of the groundwater permeable reactive wall under the condition of a complex stratum or a deeper part, is beneficial to repairing the groundwater permeable reactive wall, can be repeatedly used, and has strong interchangeability and low manufacturing and repairing cost.

Description

Method for realizing precast concrete permeable reactive wall frame body and outer frame device thereof

Technical Field

The invention relates to the field of restoration and treatment of underground water and soil pollution of environmental treatment, in particular to a method for realizing a prefabricated concrete permeable reactive wall frame body and an outer frame device thereof.

Background

The permeable reactive barrier of groundwater is a kind of in situ processing system which realizes the groundwater and soil pollution restoration and treatment, after the groundwater passes through the permeable reactive barrier in the concrete, the heavy metal or organic matter in the groundwater and the restoration medium in the reactive barrier produce a series of physical or chemical or biological effects such as degradation, precipitation and adsorption, etc., realize the restoration of groundwater, in order to reach certain emission index, it is a kind of groundwater hydraulic gradient that utilizes nature or artificial to realize the in situ restoration method.

The currently disclosed and visible methods for underground water permeable reactive barriers are all focused on treatment of surface shallow underground water, and complex geological conditions, polluted underground water or deeper soil remediation conditions cannot be realized; moreover, the general underground water permeable reactive barrier has the practical problems that the repair function of the underground water reactive barrier is passivated, and the repair efficiency is poor, and under the condition, the problem of incomplete pollution control inevitably exists; in addition, the permeable reactive barrier needs to be replaced with a reactive medium basically by reinstalling a reactive barrier system, and the repair medium is difficult to treat in a standard way in a common large excavation mode, so that the problem of secondary pollution exists, and the popularization and the use of the underground water permeable reactive barrier are greatly restricted by the defect.

Disclosure of Invention

The invention aims to overcome the problems in the prior art and provides a method and an outer frame device for realizing a precast concrete permeable reactive wall frame body, the method can realize the construction of an underground water permeable reactive wall under a complex stratum condition or at a deeper part and avoid the defect of installing the permeable reactive wall in the prior art, and the outer frame device in the method is beneficial to repairing the underground water reactive wall after the sewage treatment function of the underground water reactive wall is passivated, can be repeatedly used, has strong interchangeability and is low in manufacturing and repairing cost.

In order to achieve the above objects, the present invention provides, in one aspect, a method for fabricating a precast concrete infiltration reaction wall frame, including:

excavating underground slotted holes with the depth below a impervious layer;

arranging an outer frame device prefabricated by concrete in an underground slotted hole, wherein the outer frame device comprises one or more layers of frame units, and each layer of frame unit comprises a plurality of frame units with preset seepage holes for water to flow out;

a water stopping device capable of blocking a free water passage between the adjacent frame units so that water flows through the water stopping device flowing through a preset seepage hole is arranged between the adjacent frame units of the outer frame device, and a precast concrete permeation reaction wall frame body is formed through the outer frame device and the water stopping device;

the frame unit is a unit with at least one closed side, one or more sashes arranged at intervals are arranged in the frame unit, and a reaction medium for treating the underground polluted water body is arranged in the sashes.

The frame units are sequentially arranged along the length extending direction of the underground slotted hole, and the water stopping device is arranged between the two adjacent frame units on the left and the right to connect the frame units to form the continuous modular reaction wall frame.

Or the plurality of frame units are arranged front and back along the width direction of the underground slotted hole, and the plurality of frame units are connected through a water stop device arranged between the two adjacent frame units front and back to form the guide door type modular reaction wall frame.

Or the plurality of frame units are sequentially arranged along the length and width directions of the underground slotted hole, and the plurality of frame units are connected through the water stop device arranged between two adjacent frame units to form the large-flow gate guide type modular reaction wall frame body.

The outer frame device comprises a back cover frame body unit which is used for contacting with the bottom of the underground slotted hole and is a frame section which is formed by pouring concrete, a plurality of transverse steel bars, a plurality of longitudinal steel bars and a plurality of vertical steel bars and is sealed at the side and the bottom.

Furthermore, the outer frame device also comprises a standard frame unit which is fixedly connected with the upper part of the back cover frame unit and is a frame section which is formed by pouring concrete, a plurality of transverse steel bars, a plurality of longitudinal steel bars and a plurality of vertical steel bars and is closed on the side surface.

Preferably, an alignment structure facilitating butt joint of the back cover frame unit and the standard frame unit is arranged between the back cover frame unit and the standard frame unit.

The water stopping device is provided with a water stopping fixing part and a convex body part which is inclined outwards relative to the water stopping fixing part and extends and is provided with an arc-shaped surface, the arc-shaped surface is used as an upstream surface for receiving the incoming flow of the polluted water body, the water stopping fixing part is fixedly connected with the surfaces of the first frame units of the two adjacent frame units, and the tail end of the convex body part is in free contact with the surfaces of the second frame units of the two adjacent frame units.

Wherein the water stopping device comprises one or more water stopping units made of an elastic material.

The convex part extends outwards in an arc shape relative to the water stopping fixing part from the joint of the convex part and the water stopping fixing part.

Wherein, the protruding part includes first arcwall face and the second arcwall face that is the arc relative stagnant water fixed part and extends outwards.

Preferably, the radius of curvature of the second arcuate surface is greater than the radius of curvature of the first arcuate surface.

The water stopping device comprises one water stopping unit, or two or more than two water stopping units combined in the same direction, or one or more groups of water stopping units combined in opposite directions, wherein each group of water stopping units comprises two water stopping units.

The first arc-shaped surface of the water stopping unit convex part serves as the upstream surface, or the second arc-shaped surface of the water stopping unit convex part serves as the upstream surface.

And a water stop deformation hole is formed in the position, close to the water stop fixing part, of the first arc-shaped surface of the convex part.

Furthermore, deformable first deformation elements are arranged in the water stopping deformation holes, so that the water stopping units are extruded after the first deformation elements deform, and the water stopping units are arranged between the two adjacent frame units in an interference mode to block free water passing channels.

Wherein, the convex part second arc-shaped surface is provided with a tail ridge protruding outwards along the radial direction near the tail end.

Wherein, enclose between the first arcwall face of two stagnant water units of subtend combination and become to hold the chamber.

Furthermore, the accommodating cavity is internally provided with a deformable second deformation element, so that the second deformation element extrudes the water stopping unit after deformation, and the water stopping unit is arranged between two adjacent frame units in an interference manner to block the free water passing channel.

In addition, the present invention also provides an outer frame device for the method of prefabricating the concrete permeable reactive wall frame as described above, comprising: one or more layers of frame units which are arranged in underground slotted holes with the depth reaching below a impervious layer and are prefabricated by concrete, wherein each layer of frame unit comprises a plurality of frame units with preset seepage holes for water to flow out; the frame unit is a unit with at least one closed side, one or more sashes arranged at intervals are arranged in the frame unit, and a reaction medium for treating the underground polluted water body is arranged in the sashes.

The prefabricated concrete permeable reactive wall frame is formed by the frame units and the water stopping devices.

Compared with the prior art, the method for realizing the prefabricated concrete permeable reactive wall frame body and the outer frame device have the beneficial effects that:

1. in the method and the device, the frame body units adopt standard design, are all reinforced concrete prefabricated structures, can be prefabricated in batches in factories, and realize high prefabrication quality; the frame unit has enough strength and strong interchangeability, can be repeatedly used and has relatively low cost.

2. The top parts of a standard frame section and a bottom sealing frame section in the outer frame device are butted through a preset aligning structure (namely a preset groove and a preset lug boss), the lug boss and the groove are processed to be smooth, and a rubber waterstop can be paved or special sealant can be smeared on the periphery of the aligning structures of the upper frame section and the lower frame section, so that the aligning structure between the adjacent frame sections is sealed; the corner parts corresponding to the upper frame section and the lower frame section are preset with high-strength bolt connecting holes and an operation cavity as required, and the multiple frame sections can be stacked up and down and are fixedly butted by adopting high-strength screws, so that an upper and lower integrated prefabricated square cavity is formed.

3. In the frame section of frame device, predetermine PVC pipe according to groundwater flow direction front and back and form and predetermine the infiltration hole, the vertical PVC that establishes in the upper and lower side detects the pipe formation inspection hole, and PVC pipe accessible pipe fitting intercommunication between them, the prefabrication of PVC detection tube requires the position accurate, and the frame section of being convenient for stacks and can realize smoothly lining up from top to bottom after the installation, is convenient for can provide sample detection, on-line monitoring or provide auxiliary function such as drawing water or shutoff infiltration pipe.

4. At least four hanging rings are arranged on the periphery of each frame section of the outer frame device and are used for the purposes of installing and fixing the lifting frame sections or the slotted hole openings; in addition, the inner surface and the outer surface of the frame section can be provided with embedded parts connected with water stopping devices, and the embedded parts are used for laying the internal and external water stopping devices which are possibly required during field installation, so that the water stopping effect among the frame sections is realized through the water stopping devices, the flow of underground water along the preset seepage holes is facilitated, and the treated clean water flows downstream.

5. According to the method, through mature vertical excavation equipment, underwater vertical excavation (the depth of domestic vertical excavation exceeds 100 meters), the special polymer slurry retaining wall is embedded into the relative impervious bed, the requirements of different groundwater seepage quantities are met, the installation depth can exceed 30 meters, only the hoisting capacity on site is required, and very complex geological and groundwater conditions can be met.

6. The invention adopts the smooth and straight frame unit, so that the loading of the modularized reaction medium is realized, the reaction medium can be flexibly replaced, the sealing treatment of the polluted reaction medium is promoted, the secondary pollution is avoided, and the reaction medium can be loaded in a box body or other components, thereby being repeatedly used.

7. Among the frame units, various combined installation of serial, parallel and mixed arrangement structures can be realized by using the water stopping device, a continuous structure and a guide door type structure of the permeable reactive wall can be realized, and the permeable reactive wall is suitable for construction of complex stratum conditions or underground water permeable reactive walls at deeper parts, so that the underground water treatment efficiency is greatly improved; in addition, each frame unit can load multiple reaction media (can settle different reaction media in different sash) simultaneously to can carry out simultaneous processing to multiple pollutant, improve throughput.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

Drawings

FIG. 1 is a flow chart of the method for implementing the precast concrete permeable reactive wall frame body according to the invention;

FIG. 2 is a schematic view of a first structure of the water stopping device of the present invention;

FIG. 3 is a schematic view of a second structure of the water stopping device of the present invention;

FIG. 4 is a schematic view of a third structure of the water stopping device of the present invention;

FIG. 5 is a schematic view of a fourth structure of the water stopping device of the present invention;

FIG. 6 is a schematic view of a fifth structure of the water stopping device of the present invention;

FIG. 7 is a schematic view of a sixth structure of the water stopping device of the present invention;

FIG. 8 is a schematic view of a seventh structure of the water stopping device of the present invention;

FIG. 9 is a schematic view of an eighth structure of the water stopping device of the present invention;

FIG. 10 is a schematic structural diagram of a first water stopping device adopted in the method for realizing water stopping of the precast concrete permeable reactive wall frame body according to the invention;

FIG. 11 is a schematic structural diagram of a third water stopping device adopted in the method for realizing water stopping of the precast concrete permeable reactive wall frame body according to the invention;

FIG. 12 is a schematic structural diagram of a fifth water stopping device adopted in the method for realizing water stopping of the precast concrete permeable reactive wall frame body according to the invention;

FIG. 13 is a schematic structural diagram of an eighth water stopping device adopted in the method for realizing water stopping of the precast concrete permeable reactive wall frame body according to the invention;

FIG. 14 is a cross-sectional view of one configuration of the framing apparatus of the present invention;

FIG. 15 is a vertical cross-sectional view of one construction of the casing device of the present invention;

FIG. 16 is a longitudinal sectional view showing one construction of the outer frame device of the present invention;

FIG. 17 is an enlarged view of a portion of the standard frame section and the bottom sealing section at the corresponding corner or intersection of the standard frame section and the bottom sealing section;

FIG. 18 is a cross-sectional view of a plurality of frame units of the present invention connected to form a continuous modular reaction wall frame;

FIG. 19 is a cross-sectional view of a plurality of frame units of the present invention connected to form a guided door modular reaction wall frame;

fig. 20 is a cross-sectional view of a plurality of frame units of the present invention connected to form a mass flow portal modular reaction wall frame.

Detailed Description

As shown in fig. 1, a flow chart of a method for implementing a precast concrete permeable reactive wall frame according to the present invention is shown, and the method includes:

digging underground slot holes with depth reaching below a impervious layer under water;

an outer frame device prefabricated by concrete is arranged in the underground slotted hole, the outer frame device comprises one or more layers of frame units, and each layer of frame unit comprises a plurality of frame units with preset seepage holes for water to flow out;

a water stopping device capable of blocking a free water passage between adjacent frame units is arranged between the adjacent frame units of the outer frame device so that water flows through the water stopping device flowing through a preset seepage hole, and a precast concrete permeable reactive wall frame body is formed through the outer frame device and the water stopping device;

the frame unit is a unit with at least one closed side, one or more sashes arranged at intervals are arranged in the frame unit, and a reaction medium for treating underground polluted water is arranged in the sashes.

The outer frame device used for the method comprises the following steps: one or more layers of frame units which are arranged in underground slotted holes under water and have the depth below a water-impermeable layer and are prefabricated by concrete, wherein each layer of frame unit comprises a plurality of frame units with preset seepage holes for water to flow out; the frame unit is a unit with at least one closed side, one or more sashes arranged at intervals are arranged in the frame unit, and a reaction medium for treating underground polluted water is arranged in the sashes. When the precast concrete permeable reactive wall frame body is formed, a water stopping device which can block a free water passing channel between the adjacent frame body units so that water flows through the preset seepage holes is arranged between the adjacent frame body units, so that the precast concrete permeable reactive wall frame body is formed through the outer frame device and the water stopping device.

Wherein, a plurality of frame units adopted by the invention can be sequentially arranged along the length extending direction of the underground slotted hole, and the plurality of frame units are connected to form a continuous modular reaction wall frame body (as shown in figure 18) through a water stopping device 100 arranged between two adjacent frame units at the left and the right; or, the plurality of frame units are arranged front and back along the width direction of the underground slotted hole, and the plurality of frame units are connected to form a guide door type modular reaction wall frame body through a water stop device arranged between the two adjacent frame units in front and back (as shown in fig. 19); alternatively, the plurality of frame units are sequentially arranged along the length and width directions of the underground slotted hole, and the plurality of frame units are connected through the water stop device arranged between the two adjacent frame units in the left-right direction and the front-back direction to form the large-flow gate guide type modular reaction wall frame (as shown in fig. 20).

No matter the outer frame device comprises one layer or multiple layers of frame units arranged along the depth direction of the underground slotted hole, the outer frame device comprises back cover frame units 400a (the number can be one or more) used for being in contact with the bottom of the underground slotted hole, namely, the frame unit at the lowest layer along the depth direction of the underground slotted hole is the back cover frame unit, and each back cover frame unit 400a in the layer of frame units is a frame section which is formed by pouring concrete, a plurality of transverse reinforcing steel bars, a plurality of longitudinal reinforcing steel bars and a plurality of vertical reinforcing steel bars and is sealed at the side and the bottom (see fig. 14-16).

Further, if the outer frame device comprises two layers of frame units, the outer frame device further comprises a standard frame unit 400b fixedly connected with the upper portion of the corresponding back cover frame unit, namely, the second layer of frame units from bottom to top along the depth direction of the underground slot are all the standard frame units 400b, and the standard frame unit 400b is a frame section formed by pouring concrete, a plurality of transverse steel bars, a plurality of longitudinal steel bars and a plurality of vertical steel bars and is sealed on the side surface.

Further, if the outer frame device includes three or more layers of frame units, the standard frame unit 400b is used for the third or more layers of frame units from bottom to top in the depth direction of the underground slot.

Because a plurality of frame units of each layer of frame unit are arranged underwater, and each layer of frame unit cannot be accurately positioned in underwater operation, when the frame units are installed, a large gap exists between the adjacent frame units, so that the adjacent frame units need to be treated to prevent polluted water from flowing out from the gap between the adjacent frame units.

The water stopping device comprises a water stopping fixing part and a convex body part which extends outwards in an inclined mode relative to the water stopping fixing part and is provided with an arc-shaped surface, the arc-shaped surface is used as an upstream surface for receiving the incoming flow of the polluted water body, the water stopping fixing part is fixedly connected with the surface of a first frame body unit of two adjacent frame body units, and the tail end of the convex body part is in free contact with the surface of a second frame body unit of the two adjacent frame body units. When in design, the water stopping device can comprise one or more water stopping units according to the length and width conditions of the frame body unit, and the water stopping units are all made of elastic materials.

A permeable reactive wall of underground water is an in-situ treating system for repairing and treating the pollution of underground water and soil, and features that after the underground water passes through the permeable reactive wall, the heavy metal or organic substance in underground water and the repairing medium in the reactive wall generate a series of physical, chemical or biological actions including degradation, deposition and adsorption to repair underground water.

The Permeable Reactive Barrier (PRB) is a permeable wall body which is embedded on a flow path of polluted underground water (polluted water for short) and is vertical to the flow direction of the underground water and provided with a repairing material, so that the underground water reacts with the repairing material when flowing through the PRB, and then pollutants in the underground water are adsorbed, precipitated, degraded and removed, thereby achieving the purpose of purifying the underground water.

The invention relates to a method for realizing a precast concrete permeable reactive wall frame body (namely the permeable wall body), which is based on the principle of modular design, and firstly an outer frame device which can load permeable reactive media (namely the repair materials) therein is constructed underground, the outer frame device can comprise one or more layers of frame body units which are sequentially arranged along the depth direction of an underground slot hole from bottom to top, each layer of frame body unit comprises a plurality of frame body units, the surrounding soil body can be supported through each frame body unit, and the frame body units are provided with preset seepage holes, so that the flow of underground water is not blocked.

And the underground slot hole used for arranging the frame body unit adopts specific polymer slurry to protect the wall, the vertical excavation grooving equipment is used for excavating under water and penetrating into an underwater relative impervious layer, after the excavation is finished, the frame body unit prefabricated by reinforced concrete is arranged under the frame body unit, a specific permeable reaction medium is loaded in the frame body unit, and a water stopping device is arranged between the adjacent frame body units, so that the construction of a complex stratum condition or a deeper underground water permeable reaction wall can be realized, and the defect that the permeable reaction wall is difficult to install in the prior art under the condition is avoided.

Hereinafter, the external framing device for precast concrete penetration reactive wall frame and the wall forming method thereof according to the present invention will be described in detail by taking an example in which the external framing device for precast concrete penetration reactive wall frame includes two layers of frame units.

The frame units of the outer frame device for the reaction wall mainly comprise standard frame units and back cover frame units of a single-frame or multi-frame structure, the frame units are of a reinforced concrete structure which is designed according to the standard considering the stress state, namely, the back cover frame unit 400a is a frame section (namely, a frame section bottom back cover 411 is referred to as a back cover frame section hereinafter) which is formed by pouring concrete, a plurality of transverse reinforcing steel bars 402, a plurality of longitudinal reinforcing steel bars 401, a plurality of vertical reinforcing steel bars and reinforcing mesh and is sealed at the side and the bottom, and the standard frame unit 400b is a frame section (referred to as a standard frame section hereinafter) which is formed by pouring concrete, a plurality of transverse reinforcing steel bars, a plurality of longitudinal reinforcing steel bars, a plurality of vertical reinforcing steel bars and reinforcing mesh and is sealed at the side. In order to facilitate the rapid positioning of the standard frame section and the back cover frame section during the vertical butt joint, an alignment structure is arranged between the standard frame section and the back cover frame section, and the alignment structure can adopt a convex-concave alignment structure arranged between two adjacent frame sections, such as a groove 409 arranged at the top end of the back cover frame section and a boss 410 arranged at the bottom end of the standard frame section, or the boss is arranged at the top end of the frame section positioned below the adjacent frame section, and the groove is arranged at the bottom end of the frame section positioned above the adjacent frame section.

The standard frame section and the back cover frame section are connected in a stacking mode through high-strength bolts, therefore, when the frame sections are poured, an operation cavity 406 and a reserved bolt hole 405 (see fig. 16 and 17) which are convenient for high-strength bolt connection operation are arranged on the outer sides of corresponding corners or crossed positions of the standard frame section and the back cover frame section, openings of the operation cavity 406 and the reserved bolt hole 405 are respectively arranged on the butt joint surfaces of the two butt joint frame sections, and the reserved bolt hole 405 is located in the operation cavity 406, so that the standard frame section and the back cover frame section are in up-and-down butt joint through the high-strength bolts. During design, the aperture of the reserved bolt hole is not smaller than 25mm, the reserved bolt hole is positioned on the inner side of the outer steel bar at the corresponding position of the standard frame section and the back cover frame section, the position, provided with the reserved bolt hole 405, of the frame section can be additionally provided with reinforcing ribs, the thickness of the operation cavity 406 is not more than two thirds of the thickness of the frame section, and the width and the thickness of the operation cavity 406 meet the purpose of fastening the high-strength bolt.

A plurality of hanging rings 412 for hanging the frame sections and fixing the frame sections through slotted holes can be arranged on the periphery or the outer side of the middle part of the top of each frame section, and the hanging rings 412 are welded with the vertical stress ribs of the frame sections. During design, the size and the structure of the hanging ring 412 need to be considered, the installation of the later frame section is not affected, and the hanging ring 412 needs to meet the requirements of simultaneous hoisting and lateral fixing of the frame section.

In addition, a plurality of PVC pipes can be pre-embedded on the side walls of the frame sections along the height direction of the frame sections (i.e. along the depth direction of the underground slotted holes) to form the detection holes 407, and a plurality of PVC pipes can be pre-embedded on the side walls of the frame sections along the width direction of the frame sections (i.e. the width direction of the reaction pile holes extending along the groundwater flow direction) to form the reserved seepage holes 408 for groundwater to flow into and out of the frame sections. When each frame section is prefabricated, a seepage upstream side (namely, one side facing the water) and a seepage downstream side (namely, one side facing the water) of each frame section are respectively provided with a horizontal seepage hole 408 and a vertical detection hole 407, and a PVC pipeline is fixed during steel bar binding, wherein a detection pipe for forming the detection hole can be connected with a pipe used as a reserved seepage hole into a whole through reducing and a cross joint, the inner diameter of the detection pipe is 32-65 mm, and the inner diameter of a pipe used for the seepage hole is not more than 32mm. The pre-buried pipe of inspection hole at frame festival top needs to lay the reducing pipe that the standard pipe diameter is bigger more than one-level, and the balanced error when being convenient for upper and lower frame festival stacks the butt joint makes the inside butt joint of inspection pipe smooth and easy. During assembly, the detection holes of the frame sections are communicated up and down.

The left, right, inner and outer sides of the frame section relative to the seepage upper and lower sides can be reserved with embedded

parts

403 and 404 for installing and fixing water stopping devices according to needs, the embedded parts can be iron plates, are attached to the inner side wall and the outer side wall of the frame section and are cast into a whole, so that when the frame section is arranged below, a special water stopping device is arranged in or outside the frame section, and the purpose of combining and sealing a seepage channel between seepage guide of a reaction wall and an adjacent frame body is achieved. During design, a water stopping operation hole needs to be reserved on the upstream side of the water stopping device arranged inside the frame section, and the water stopping device is convenient to lay, bond and fix when being arranged below the frame section.

When the bottom sealing frame section and the standard frame section are manufactured, the same appearance structure is needed, the only difference is that the bottom of the bottom sealing frame section is sealed by adopting reinforced concrete, the reinforcing mesh is connected with the lateral reinforcing mesh of the frame section and poured into a whole, and the thickness of the bottom sealing frame section is not more than the lateral thickness of the frame section.

The method for realizing water stop between adjacent frame units of the prefabricated concrete permeable reactive wall frame by adopting the water stop device comprises the following steps of:

the water stopping device is provided with a water stopping fixing part and a convex part which is inclined outwards relative to the water stopping fixing part and extends and is provided with an arc-shaped surface;

arranging a water stopping device between a first frame unit and a second frame unit which are adjacent in a prefabricated concrete permeable reactive wall frame for treating underground polluted water;

when the water stopping device is arranged, the arc-shaped surface of the water stopping device is used as the upstream surface (the surface with higher water level) facing the inflow of the polluted water body, and the water stopping fixing part of the water stopping device is fixedly connected with the surface of the first frame unit, so that the tail end of the convex body part of the water stopping device is freely contacted with the surface of the second frame unit;

when the polluted water body flows towards the gap between the two frame units, the polluted water body applies acting force to the arc-shaped surface of the water stopping device, the tail end of the convex body part of the water stopping device is tightly attached to the surface of the second frame unit, so that the water stopping device blocks the free water passing channel between the two adjacent frame units, and the polluted water body is prevented from flowing out through the free water passing channel.

According to the structure of the modular reaction wall formed as shown in fig. 18-20, the water stop devices are arranged in the gaps between the left and right and/or front and rear adjacent two frame units (the gap is a channel between the two frame units through which groundwater can freely flow, that is, a free water passage), the water stop devices have the same structure and are provided with water stop fixing parts and convex body parts, the starting ends of the convex body parts are connected with the water stop fixing parts, the tail ends of the convex body parts extend outwards obliquely relative to the water stop fixing parts, the water stop fixing parts are fixedly connected with the first frame units in the adjacent frame units, the convex body parts are freely contacted with the second frame units in the adjacent frame units, and the arc surfaces of the convex body parts are taken as the upstream surfaces of the incoming water of the polluted water body.

The water stopping device of the invention can comprise one or more water stopping units, wherein the water stopping units comprise: a water stop fixing part, one surface of which is fixedly connected with the surface of the first frame unit; the convex part which is connected with the other surface of the water stop fixing part, extends outwards in an inclined way relative to the water stop fixing part and is provided with an arc-shaped surface, and the tail end of the convex part is in free contact with the surface of a second frame unit in the two adjacent frame units. When the water stopping unit is arranged between two adjacent frame units, the arc-shaped surface of the water stopping unit is used as an upstream surface for receiving the inflow of the polluted water body; when the polluted water body flows towards the gap between the two frame units, the polluted water body applies acting force to the arc-shaped surface of the water stopping unit, the tail end of the convex body part of the water stopping unit is tightly attached to the surface of the second frame unit, so that the water stopping unit blocks the free water passing channel between the two adjacent frame units, and the polluted water body is prevented from flowing out through the free water passing channel. It should be noted that the positions of the first housing unit and the second housing unit may be interchanged.

During manufacturing, the water stopping unit is made of elastic materials, and the convex body part of the water stopping unit extends outwards in an arc shape relative to the water stopping fixing part from the joint of the convex body part and the water stopping fixing part. The convex body part comprises a first arc-shaped surface and a second arc-shaped surface which are outwards extended in an arc shape relative to the water stop fixing part, the curvature radius of the second arc-shaped surface is larger than that of the first arc-shaped surface, and the two arc-shaped surfaces are connected together at the tail end of the convex body part through connecting surfaces, namely, the width of the convex body part is gradually narrowed towards the tail end of the convex body part from the connecting part of the convex body part and the water stop fixing part.

When the water stopping device is arranged, the water stopping device can comprise a water stopping unit; or two or more than two water stopping units combined in the same direction are included; or one or more groups of water stopping units which are oppositely combined are included, and each group of water stopping unit comprises two water stopping units. And when the water stopping unit is arranged between two adjacent frame units, the first arc-shaped surface of the convex part of the water stopping unit can be used as the upstream surface, or the second arc-shaped surface of the convex part of the water stopping unit can also be used as the upstream surface.

Furthermore, the end part, close to the starting end, of the first arc-shaped surface of the convex body part can be provided with a water stopping deformation hole, and a deformable first deformation element is arranged in the water stopping deformation hole, so that the first deformation element extrudes the water stopping unit after deformation, and the water stopping unit is arranged between the two adjacent frame units in an interference mode to block the free water passing channel. Further, a tail ridge protruding radially outward therefrom is provided near the tip end of the second arc-shaped face of the convex body portion.

When adopting two stagnant water units of subtend combination to form sealing device, the first arcwall face of two stagnant water units is relative and enclose between the two and become to hold the chamber, and is preferred, places deformable second deformation component in holding the intracavity to the second deformation component extrudees the stagnant water unit after warping, makes the stagnant water unit interference settle between two adjacent frame units in order to block free water channel.

Next, the structure of the water stop device used in the present invention will be described in detail.

Example 1

As shown in fig. 10, which is a top view of the water stopping device 100 installed between adjacent frame units in the present embodiment, it can be seen that the water stopping device 100 of the present embodiment includes one water stopping unit 10, and the water stopping unit 10 is installed between two adjacent frame units (only two frame units are shown in fig. 10, and in practical application, a plurality of frame units are included, and the water stopping unit 10 of the present embodiment is installed between every two adjacent frame units), wherein the frame units can be of a prefabricated concrete structure.

The water stopping unit 10 is made of elastic material, such as ethylene propylene diene monomer, so that the water stopping unit 10 has good elasticity, can be adaptive to a gap between adjacent frame units of the underground water reaction wall within a certain range, and has a good effect of blocking the flow of the polluted water body.

The water stop unit 10 of the present embodiment adopts a structure as shown in fig. 2, and includes: a water stop fixing part 3, one surface of which is fixedly connected with the surface of the first frame unit 200 in two adjacent frame units in the underground water reaction wall; the convex part which is connected with the other surface of the water stop fixing part 3, extends outwards in an inclined way relative to the water stop fixing part 3 and is provided with an arc-shaped surface, and the tail end of the convex part is freely contacted with the surface of the second frame unit 300 in the two adjacent frame units.

Specifically, as shown in fig. 2, the water-stopping fixing portion 3 of the water-stopping unit 10 is a long strip, one surface of the water-stopping fixing portion 3 is a plane and is fixedly connected with the surface of the first frame unit 200, when the water-stopping fixing portion is connected, the water-stopping fixing portion 3 can be fixed on the surface of the first frame unit 200 (the surface is poured with the above-mentioned outer water-stopping fixing member by embedding) through bolts and fixing pressing plates (see the fixing

pressing plates

8 and 9 in fig. 6, and only the fixing pressing plates at the connection positions of the two water-stopping units are shown in fig. 6, it should be understood that the length of the fixing pressing plates should be matched with the size of the two ends of the water-stopping fixing portion in this embodiment), correspondingly, through holes penetrating through the thickness are respectively arranged at the two ends of the water-stopping fixing portion 3 as fixing holes 4, and matching counter bores or through holes (not shown in the figure) are arranged at corresponding positions on the surface of the first frame unit 200. Alternatively, when the connection is made, a glue layer (see the glue layer 6 in fig. 5) may be coated on the one surface of the water stop fixing portion 3 to adhere the water stop fixing portion 3 to the smooth surface of the first frame unit 200, so that the water stop fixing portion and the first frame unit are adhered together. Or, the adhesive and the drilling pressing plate can be combined in a fixing mode, so that the adhesive and the drilling pressing plate are firmly fixed together. When the water-stop fixing portion 3 is fixed to the surface of the first housing unit 200, the water-stop fixing portion 3 and the surface of the first housing unit 200 are firmly fixed, and no penetration path is formed between the fixed surfaces.

The other surface of the water-stop fixing portion 3 is also a plane and is fixedly connected with the starting end of the convex portion as a whole, the convex portion is inclined outwards relative to the water-stop fixing portion 3 from the joint of the convex portion and the water-stop fixing portion 3 and extends in an arc shape, that is, the convex portion comprises a first arc-shaped surface a and a second arc-shaped surface b which extend outwards in an arc shape relative to the water-stop fixing portion 3, the curvature radius of the second arc-shaped surface b is larger than that of the first arc-shaped surface a, the tail ends (the tail ends refer to the ends far away from the water-stop fixing portion) of the first arc-shaped surface a and the second arc-shaped surface b are connected together through the connecting surface 1, that is, the width of the convex portion is gradually narrowed from the joint of the convex portion and the water-stop fixing portion towards the tail ends (see fig. 2), and the joint of the second arc-shaped surface b and the connecting surface 1 is the tail end of the convex portion, that is, the tail end of the second arc-shaped surface b can be regarded as the tail end of the convex portion.

During the preparation, connect face 1 can with stagnant water fixed part 3 another surface is perpendicular, also can be relative another surface slope setting, and the initiating terminal and the stagnant water fixed part 3 of first arcwall face an another surface be close to one end department and link together, make the initiating terminal and the stagnant water fixed part 3 of second arcwall face b another surface be close to another end department and link together, and the centre of a circle Oa of first arcwall face an, the centre of a circle Ob of second arcwall face b are located one side of first arcwall face a to curved structure in messenger's bulge portion and stagnant water fixed part form. Moreover, the length and size of the water stopping unit 10 are equal to or slightly smaller than the gap between two adjacent frame units (the gap is the length of the free water passing channel), that is, the length between the surface of the water stopping fixing part of the water stopping unit for connecting the first frame unit and the tail end of the convex body part may be equal to or slightly smaller than the length of the free water passing channel. In addition, the height of the water stopping unit 10 should be equal to the height of the adjacent frame unit during the manufacturing process, so as to completely block the polluted water body between the two adjacent frame units in height.

When the water stop unit 10 is arranged between two adjacent frame units, the first arc-shaped surface a of the water stop unit is used as an upstream surface (shown in fig. 10) facing the incoming flow of the polluted water body, when the polluted water body flows towards the gap between the two frame units, the convex part and the water stop fixing part form an inner arc-shaped structure, and the water stop unit 10 has elasticity, so that when the polluted water body applies acting force on the first arc-shaped surface a, the water stop unit 10 can deform, the tail end of the convex part is tightly attached to the surface of the second frame unit 300, a free water passing channel between the two adjacent frame units can be blocked by the water stop unit, the polluted water body is prevented from flowing out through the free water passing channel, and further pollution to the underground water downstream is avoided.

The water stopping device of this embodiment, stagnant water unit adopt the ethylene propylene diene monomer preparation, have the stagnant water fixed part and be the protruding portion that the arc extends to one side slope, and this special shape and structure make the water stopping device of this embodiment have fine elastic deformation ability, adapt to the great aperture between adjacent frame unit, and the tail point (terminal and be close to the terminal department) of protruding portion can become frame unit's stagnant water point in the pressurized state by self-adaptation, improves the stagnant water effect.

Example 2

The water stopping unit adopted by the water stopping device 100 of the present embodiment adopts a structure as shown in fig. 3, the structure of the water stopping unit is basically the same as that of embodiment 1, when the water stopping unit is arranged between two adjacent frame units, the arrangement mode of the water stopping unit is the same as that of embodiment 1, and the difference of the water stopping unit of the present embodiment from that of embodiment 1 is that the water stopping unit further has a third arc-shaped surface c and a tail ridge 2, and the first arc-shaped surface and the third arc-shaped surface of the convex part are used as upstream surfaces.

Only the differences in the structure of the water stop unit of the present embodiment from that of embodiment 1 will be described in detail below.

Because the first arcwall face a of stagnant water unit convex part is when meeting the water, the contaminated water that flows can form great impact force to the stagnant water unit, damage because of producing stress concentration in order to prevent the junction between first arcwall face a and the stagnant water fixed part 3, this embodiment still sets up third arcwall face c between first arcwall face a and stagnant water fixed part 3, can increase the joint strength between convex part and the stagnant water fixed part 3 through the third arcwall face, and make and form the smooth connection between the two.

Specifically, the initiating terminal of the third arc-shaped surface c is connected with the other surface at the end close to the one end of the water stop fixing part 3, the tail end of the third arc-shaped surface c is connected with the initiating terminal of the first arc-shaped surface a, the initiating terminal of the second arc-shaped surface b is connected with the water stop fixing part 3 at the other end of the other surface close to the other end, the curvature radius of the second arc-shaped surface b is larger than that of the first arc-shaped surface a, the curvature radius of the third arc-shaped surface c is smaller than that of the first arc-shaped surface a, and the circle center Oc of the third arc-shaped surface c, the circle center Oa of the first arc-shaped surface a and the circle center Ob of the second arc-shaped surface b are located on one side of the first arc-shaped surface a. Like this, the width of convex part and stagnant water fixed part junction is greater than the width of junction when being connected by first arcwall face is direct with the stagnant water fixed part, when polluting the water and assaulting convex part, and certain cushioning effect is played to polluting the water as the upstream face jointly to first arcwall face and third arcwall face, and the stagnant water effect is better.

In order to further improve the water stopping effect of the water stopping unit, the embodiment further provides a tail ridge 2 protruding outwards along the radial direction of the second arc-shaped surface b (the direction of the outward finger away from the first arc-shaped surface) at the end close to the second arc-shaped surface b of the convex body. The tail ridge 2 can be in an arc shape as shown in fig. 3, and the radius of the tail ridge 2 can be determined according to the situation when the tail ridge is designed. The structure that the tail ridge 2 is arranged at the position, close to the tail end, of the convex body portion is adopted, and under the condition that the water stopping device is suitable for a large gap between the frame body units, the tail ridge 2 and the tail tip of the convex body portion can be self-adaptively changed into respective water stopping points under the state of the pressure of the polluted water body, namely, under the impact effect of the polluted water body, the water stopping unit deforms, so that the tail tip of the convex body portion is tightly attached to the second frame body unit, a first heavy water stopping action point of the water stopping unit between the adjacent frame body units is formed, the outer edge of the tail ridge 2 can be tightly attached to the second frame body unit, a second heavy water stopping action point of the water stopping unit between the adjacent frame body units is formed, and the double water stopping action can effectively prevent the polluted water body from leaking out of the adjacent frame body units.

Example 3

The water stopping unit for the water stopping device 100 of the present embodiment has a structure as shown in fig. 4, and has a structure substantially the same as that of embodiment 2, and when the water stopping unit is installed between two adjacent frame units, the installation manner is the same as that of embodiment 2, that is, the first arc-shaped surface and the third arc-shaped surface of the convex part are used as the upstream surfaces, and the difference from the water stopping unit of embodiment 2 is that the water stopping unit of the present embodiment further has a water stopping deformation hole 5.

Only the differences in the structure of the water stop unit of the present embodiment from that of embodiment 2 will be described in detail below.

As shown in fig. 4, in the present embodiment, a water stop deformation hole 5 is provided at a position of the first arc-shaped surface a of the water stop unit convex part near the water stop fixing part 3, and preferably, the water stop deformation hole 5 is provided at a junction of the first arc-shaped surface a and the third arc-shaped surface c, and is a circular hole with an opening provided on the two arc-shaped surfaces and recessed toward the second arc-shaped surface.

When settling the stagnant water unit between adjacent framework unit (see fig. 11), set up first arcwall face a and the third arcwall face c in stagnant water deformation hole 5 and regard as the upstream face, when polluting the water and strike these two arcwall faces, stagnant water deformation hole can suitably warp, makes the arcwall face have certain self-adaptation ability, promptly, makes the stagnant water unit have certain self-adaptation ability for the clearance between two adjacent framework units can better be adapted to the stagnant water unit, prevents to have infiltration passageway between two adjacent framework units.

Example 4

The water stopping device 100 of the present embodiment adopts a structure as shown in fig. 5 for the water stopping unit, which is basically the same as the structure of embodiment 3, and is different from the water stopping unit of embodiment 3 in that the water stopping unit of the present embodiment is provided with a deformable first deformation member 7 in a water stopping deformation hole 5.

As shown in fig. 5, the first deforming member 7 is a circular member, and when manufactured, the outer diameter of the member is equal to or slightly smaller than the diameter of the water stop deforming hole 5. Wherein, the element is made of a material which can expand and deform in a certain degree, such as rubber, can be an expansion strip which slowly expands after absorbing water, and can also be a small rubber tube which expands when pressing water. When the small pressurized water expansion rubber pipe is adopted, after the small pressurized water expansion rubber pipe is installed between adjacent frame units such as concrete structures, water is pressurized into the rubber pipe with an opening at one end through the pressure pump, the rubber pipe is expanded to be larger than the size of the water stop deformation hole 5 to compress the water stop unit, the opening of the rubber pipe is sealed after the rubber pipe is expanded to a preset degree, the expanded rubber pipe always applies pressure to the water stop unit, and therefore the water stop unit can achieve a water stop function with a higher water head or stability.

Wherein, after the stagnant water unit is installed adjacent frame unit like between the adjacent concrete structure, install the downthehole first deformation element 7 of stagnant water deformation of stagnant water unit and can not influence the stagnant water function of stagnant water unit, but in the stagnant water later stage, promptly, pollute the water and strike stagnant water unit after the certain time, first deformation element 7 can provide extra inflation expansion and extrusion force to the stagnant water unit, can provide the better stagnant water function of stagnant water unit, stop to have the infiltration passageway between two adjacent frame unit.

Example 5

The water stopping device 100 of the present embodiment adopts the structure shown in fig. 6 as the water stopping unit, which includes two water stopping units combined together in the same direction. In practice, the water stopping unit of embodiment 3 can be adopted.

Specifically, the water stop fixing portions of the two water stop units with the same structure in the water stop deformation hole in embodiment 3 are connected end to end (the end of the water stop fixing portion close to the third arc-shaped surface; the end of the water stop fixing portion close to the second arc-shaped surface), that is, the tail end of the first water stop fixing portion abuts against the head end of the second water stop fixing portion, the surfaces of the two water stop fixing portions are on the same plane, and the first arc-shaped surface and the third arc-shaped surface of the protruding portions of the two water stop units are arranged in parallel, so that the first arc-shaped surface and the third arc-shaped surface of the first water stop unit can be used as main upstream surfaces, and the first arc-shaped surface and the third arc-shaped surface of the second water stop unit are used as auxiliary upstream surfaces. Thus, the double water stopping function of the two water stopping units can effectively prevent a permeation channel from being formed between two adjacent frame units.

During the equipment, the head and the tail of two stagnant water units are connected and can be adopted 45 degrees scarf, and 45 degrees scarf are adopted respectively to the tail end of first stagnant water unit and the head end of second stagnant water unit promptly to adopt special powerful glue to bond the pressfitting connection, keep the smooth butt joint of connector, make area of contact increase between the connection face, connect more reliably. Of course, flush cuts between the connection faces may also be used.

When the assembled water stop device 100 of the present embodiment is placed between adjacent frame units, as shown in fig. 12, the one surface of the water stop fixing portions of the two water stop units is brought into contact with the smooth surface of the first frame unit 200, and the convex portions of the two water stop units extend toward the second frame unit 300. And then, according to the required grade, the assembled water stop device is fixed on the adjacent frame units on the site, such as a concrete structure surface, by adopting glue or/and a drilling pressing plate by utilizing materials such as a fixing pressing plate. Compare embodiment 3's fixed pressing plate, the fixed pressing plate that two stagnant water units of this embodiment department of offseting used can be the long pressing plate a little of length, promptly, this pressing plate can cover the position of connecting at two stagnant water units simultaneously, and two stagnant water units are fixed respectively on first frame unit 200 to the rethread pair of bolt.

When polluted water flows to the gap between adjacent frame units, the polluted water contacts with the upstream surface of the first water stopping unit in the water stopping device, so that the water stopping unit deforms in a self-adaptive manner and is in close contact with the second frame unit through the tail tip and the tail ridge to play a water stopping role. When the flow velocity of the polluted water body is large or the polluted water body passes through the first water stopping unit due to other reasons, the second water stopping unit can generate self-adaptive deformation under the impact of the water body and is in close contact with the second frame unit through the tail tip and the tail ridge, so that the second water stopping effect is achieved.

Example 6

The water stopping device 100 of the present embodiment employs the structure shown in fig. 7 for the water stopping unit, which is the same as that of embodiment 5, and also employs two water stopping units, and the two water stopping units are combined together in the same direction. Unlike embodiment 5, the first deformation element 7 is disposed in the water stop deformation hole 5 of each water stop unit, that is, it can be understood that the present embodiment adopts two water stop units in embodiment 4, and then the two water stop units are assembled together to form the water stop device by using the method of embodiment 5.

The water stopping principle of the water stopping device of the present embodiment can be referred to the principles of embodiments 4 and 5, and the first deforming member 7 is the member of embodiment 4, and the description of the above will not be repeated.

Example 7

The water stopping device 100 of the present embodiment has a structure shown in fig. 8, and as can be seen from the figure, two water stopping units are oppositely combined together, and in the implementation, the structure of stopping the water unit in embodiment 3 can be adopted.

Specifically, the water stop fixing portions of the two water stop units having the same structure and provided with the water stop deformation holes in embodiment 3 are connected in a tail-to-tail manner (tail means that the water stop fixing portions of the water stop units are close to one end of the second arc-shaped surface), that is, the tail end of the first water stop fixing portion is abutted to the tail end of the second water stop fixing portion, and the two water stop fixing portions are arranged on the same plane, the first arc-shaped surfaces and the third arc-shaped surfaces of the protruding portions of the two water stop units are oppositely arranged, so that the second arc-shaped surface of the first water stop unit can be used as a main upstream surface, and the first arc-shaped surface and the third arc-shaped surface of the second water stop unit are used as auxiliary upstream surfaces.

When the water stopping device of the embodiment is arranged between two adjacent frame units, one surface of each of the two water stopping units is fixed on the smooth surface of the first frame unit in the above manner, the convex body parts of the two water stopping units extend towards the direction of the second frame unit, the tail tips of the convex body parts of the two water stopping units are in contact with the smooth surface of the second frame unit, and the second arc-shaped surface of the first water stopping unit faces the direction of water flow. And when two stagnant water units of subtend combination form sealing device, the first arcwall face of two stagnant water units, third arcwall face are relative and can enclose into between two pairs of arcwall faces and hold the chamber.

When two water stopping units are assembled, the tail connecting surfaces of the two water stopping units can adopt 45-degree inclined notches, namely the tail end of the first water stopping unit and the tail end of the second water stopping unit respectively adopt 45-degree inclined notches and are bonded and pressed for connection by adopting special strong glue, so that the connecting ports are smoothly butted, the contact area between the connecting surfaces is increased, and the connection is more reliable. Of course, flush cuts between the connection faces may also be used.

When the polluted water body acts on the second arc-shaped surface of the first water stopping unit, the tail tip of the first water stopping unit moves downwards under the action of the water body and is tightly attached to the surface of the second frame unit, and the tail ridge is tightly attached to the surface of the second frame unit. When the flow velocity of the polluted water body is large or other reasons and the polluted water body passes through the first water stopping unit, the polluted water body enters the accommodating cavity defined by the first water stopping unit and the second water stopping unit, two convex bodies of the two water stopping units expand outwards relatively under the acting force of the water body, and the tail tip and the tail ridge can be tightly attached to the surface of the second frame unit. Like this, through two stagnant water units of subtend arrangement, can better adapt to the clearance between adjacent frame body unit, play dual stagnant water effect, can realize the stagnant water function of higher water pressure or stability, prevent more effectively that there is infiltration passageway between two adjacent frame body units.

Example 8

The water stopping device 100 of the present embodiment adopts the structure shown in fig. 9 for the water stopping units, and as can be seen from the figure, the structure is basically the same as that of the embodiment 7, except that the present embodiment is provided with a deformable second deforming member 11 in a containing cavity enclosed by two water stopping units.

The accommodating cavity defined by the two water stopping units is approximately semicircular, correspondingly, the second deformation element 11 is also approximately semicircular, but the external dimension of the second deformation element 11 is equal to or slightly smaller than the size of the accommodating cavity. When manufactured, the second deforming element 11 is made of a material which can expand and deform by absorbing water to a certain extent, such as a pressurized water expansion rubber hose made of rubber, or an adhesive tape which expands slowly by absorbing water (such as expansion 4-8 hours after water meeting). Similarly, when the pressurized-water expansion rubber pipe is adopted, after the second deformation element 11 is installed between adjacent frame units such as concrete structures, water is pressurized into the rubber pipe with an opening at one end through the pressure pump, the rubber pipe is expanded to be larger than the size of the accommodating cavity to compress the two water stopping units, the opening of the rubber pipe is sealed after the preset degree is reached, the expanded rubber pipe applies active pressure to the two water stopping units all the time, so that the two water stopping units can realize the water stopping function with higher water head or stability, a free water passing channel is further blocked, and the water stopping effect and the long-term stability are greatly improved.

When the water stopping device of the present embodiment is disposed between adjacent frame units, the one surfaces of the two water stopping units are fixed on the smooth surface of the first frame unit in the above manner, the convex bodies of the two water stopping units extend toward the second frame unit, the tail tips of the convex bodies are in contact with the smooth surface of the second frame unit (see fig. 13), and the second arc-shaped surface of the first water stopping unit faces the direction of water flow. And a second deformation element 11 is arranged in a containing cavity enclosed between the two pairs of arc-shaped surfaces of the two water stop units.

In practical application, the water stopping devices with two water stopping units in the embodiment can be a group, and a plurality of groups of water stopping devices are arranged between adjacent frame units.

The water stopping unit is made of ethylene propylene diene monomer rubber, and the ethylene propylene diene monomer rubber (EPDM) is formed in one step by a vulcanization process in a special factory, so that the water stopping unit is smooth and attractive in surface, and has excellent performances such as good elasticity, compression deformation resistance, weather aging resistance, ozone resistance, chemical stability resistance and the like.

When the combined water stopping device is applied, the water stopping unit processed in a factory is transported to a construction site, materials such as a fixing pressing plate, a slow expansion strip, a pressure expansion pipe and the like are prepared according to the required grade, and the combined water stopping device is fixed on one of two adjacent concrete structure surfaces on the site by adopting an adhesive or/and a drilling pressing plate; at fixed water stop device's in-process, determine water stop device's use quantity according to the operating mode, connect the multiunit water stop device in proper order and fill back between two concrete structures, need connect adjacent two sets of water stop device, then the face of connecting of the stagnant water unit of butt joint adopts 45 degrees scarf, and special powerful glue bonding pressfitting connection is adopted on the scene, keeps the smooth-going butt joint of connector. In addition, when a structure of a plurality of water stopping devices is adopted, the connecting seams of the water stopping units of the adjacent water stopping devices can be staggered by more than 30 centimeters. The installation precision of two adjacent precast concrete structures must meet the application gap range of the water stopping device in the embodiment, after installation and acceptance, if the deformation element adopts a pressure expansion rubber pipe, the pressure expansion rubber pipe is filled with water to pressurize the water stopping unit and stably maintain the pressure, so that the water stopping device meets the required water stopping function; if the deformation element of the water stopping device is provided with the pressure expansion rubber pipe, the pressure change in the rubber pipe can be observed, the working state of the water stopping device can be verified, the detection can be carried out through underwater camera shooting and the like, and the normal state of the water stopping device can be ensured by adjusting the position of the adjacent precast concrete structure.

Example 9

The water stopping device 100 of the present embodiment is based on embodiment 8, and the first deforming member 7 (not shown in the figure) is further arranged in the water stopping deforming hole 5 of each water stopping unit.

The description of the above embodiments can be referred to for the water stopping structure and the water stopping principle of this embodiment, and are not repeated herein.

In the water stopping device of the present invention, the water stopping units in the above embodiments may be combined according to actual conditions.

The water stopping device of the invention is unprecedented at home and abroad, can be used for stopping water between underground precast concrete, and has the following advantages:

1. the water stopping unit of the water stopping device is made of ethylene propylene diene monomer, the structure of the water stopping unit comprises a water stopping fixing part and a convex body part which is inclined and convex towards one side, the tail part of the section of the convex body part is provided with a tail ridge and a tail tip, and the inner side surfaces of the convex body part and the water stopping fixing part are of an inner arc-shaped structure. Especially, a round hole with an opening, namely a water stop deformation hole is further arranged at the position, close to the water stop fixing part, of the convex body part, so that the water stop device can further realize the functions.

2. According to the working condition of use, can adopt a stagnant water unit, also can adopt the structure of two stagnant water unit combinations, can also adopt and form a set of for a combination with two stagnant water units, and adopt multiunit structure to, also can increase the slow expansion type sealing strip or the pressure expansion rubber tube on stagnant water unit to can realize many recombination forms, and then can reach the stagnant water function of dual or more than triple.

3. The slowly expanding type water stop strip or the water pressing expansion rubber pipe in the water stop unit of the water stop device does not influence the function of the water stop unit during installation, but can provide additional expansion and extrusion force at the later stage, and can realize higher water stop capacity and long-term stability.

4. All elements in the water stopping device are elastic structures, can be arranged in a straight line or a curve with a concrete structure or a steel frame unit structure, and cannot influence the water stopping effect as long as the frame combining unit is in structural surface contact and the gap is smaller than the action range of the water stopping unit.

5. According to the water stopping unit in the water stopping device, the water stopping fixing part can be fixed on the side face of one frame unit in two adjacent concrete frame units through special adhesive or a layering bolt, and the convex body part freely contacts the surface of the other frame unit, so that the whole installation process is simple, and the operability is high.

The water stop device of the present invention can be applied not only between adjacent frame units, but also inside the frame units, that is, between the inner side surface of the frame unit and other members (such as members filled with reaction medium), and the water stop principle is the same as the above water stop principle, and the above water stop devices can also be applied, and the structure and principle thereof will not be described here.

Next, a process of forming a modular reaction wall by using the water stop device and the frame unit will be described.

(1) Prefabrication processing of each frame unit: performing stress calculation according to the embedding depth of the frame units, designing required frame units, and then calculating and selecting, seepage capability, number of frames and layout arrangement according to the functional requirements of the permeable reactive wall so as to determine the specification number of the frame units and the layout of seepage holes; designing a shaping template according to the requirements of the sash, positioning the position of the prefabricated template in a prefabricated field, processing a reinforcing mesh, reserving the fixed installation of each pipeline and each embedded part, installing and fixing the template, pouring concrete, maintaining the frame body unit, and stacking for later use.

(2) Frame unit installation process:

a. vertically excavating a slotted hole: preparing for site construction, mounting a platform and the like, adopting special polymer slurry to protect walls, adopting vertical excavation equipment such as a grab bucket and the like, excavating underground slotted holes of the mounting frame body units underwater, wherein the excavation depth reaches below a relative impervious layer, removing bottom siltation, and checking and accepting to be qualified;

b. frame unit installation preparation: lifting and fixing a first frame section (namely a bottom sealing frame section) for a reaction wall on a slotted hole, fixing or bonding a required internal water stopping device and/or an external water stopping device, laying a rubber water stopping belt or coating a sealant on the top to realize convex-concave platform sealing between an upper frame section and a lower frame section, laying or sticking a reverse filtering geotextile or a pressing strip outside a seepage hole area to cover the seepage area, and preparing a high-strength connecting bolt;

c. frame body installation butt joint: hoisting and stacking the second section of frame section (namely the standard frame section) on the upper section (namely the bottom sealing frame section) to ensure that the detection holes formed by the PVC embedded pipes are not blocked in butt joint; continuously laying an inner water stopping device and an outer water stopping device on the second section of frame section, fastening high-strength bolts and realizing the butt joint of the upper section and the lower section;

d. the frame body is arranged below: after the butt joint is completed, a few frame sections are lifted, the device with the upper section fixed at the hole opening is removed, two frame sections are arranged below to a proper position, the frame section (namely, the second frame section) positioned at the upper part is fixed at the hole opening of the groove, the next frame section is continuously butted, and the process is circulated until the whole frame unit is arranged below;

e. the frame is provided with the following components: according to the structure of the reaction wall, a plurality of frame units are sequentially arranged in the slot holes in the order of up and down, left and right, front and back, and the water stopping device is arranged between adjacent frame units until the installation is finished, and in the installation process, the water stopping device between adjacent frame sections needs protection measures to ensure that the function of the water stopping device is effective;

f. backfilling the cracking slurry: the space between the frame unit (such as the frame unit 200 in fig. 18) located at the outer side and the tank wall 500 is filled with backfilled granular crushed stones or coarse sand, further, a water stop module 600 in the prior art can be used between the frame unit and the tank wall 500, and then the water stop module is embedded in the pipeline, so that the space inside the frame is subjected to pressure water circulation (namely, water is supplied to the seepage hole from the detection hole, water is pumped out by using a circulating pump, and the water circulation inside the frame is realized), a proper additive is added, the pH value of polymer slurry (slurry formed in the process of digging the slotted hole) in the frame is adjusted, the decomposition of the polymer slurry is realized, and the permeability of the stratum where the frame unit is located is ensured to be recovered, namely, the water flow can normally flow.

After the installation of the reaction wall frame unit and the plugging and flow guiding measures of the peripheral underground water are finished, reaction media for treating the underground polluted water body can be arranged in the frame unit.

g. Reuse of reaction wall frame units: after the subsequent period of loading reaction medium, operating permeable reaction wall, monitoring operation or replacing medium, underground water or pollutant in reaction wall is finished, the frame unit can be taken out from the underground slot through a jack or a vibration taking and pulling device and repeatedly used for other pollution projects.

In conclusion, the method for realizing the underground water precast concrete permeable reactive wall frame body and the frame body device have no precedent in China and abroad, and have the following characteristics:

(1) Each frame body unit is of a single-lattice or multi-lattice structure and is divided into a standard frame section and a bottom sealing frame section, and the bottom sealing frame section is sealed by reinforced concrete; each frame section adopts a standard design and is of a reinforced concrete prefabricated structure, and the frame sections are prefabricated in batches in a factory, so that high prefabrication quality can be realized; the frame unit has enough strength, strong interchangeability, repeated use and relatively low cost;

(2) The top of the standard frame section and the top of the sealing bottom frame section are butted through a preset aligning structure (a preset groove and a preset lug boss), the lug boss and the groove are processed smoothly, and a rubber waterstop can be paved or special sealant can be smeared on the periphery of the aligning structures of the upper frame section and the lower frame section, so that the sealing of the aligning structure between the adjacent frame sections is realized; high-strength bolt connecting holes and an operation cavity are preset at the corner parts corresponding to the upper frame section and the lower frame section as required, and the multiple frame sections can be stacked up and down and are fixedly butted by adopting high-strength screws, so that a prefabricated square cavity body integrated up and down is formed.

(3) The prefabricated concrete outer frame device is characterized in that PVC pipes are preset to form preset permeation holes according to the front and back preset PVC pipes in the flowing direction of underground water, PVC pipes are vertically arranged on the upper side and the lower side to form detection holes, the PVC pipes between the PVC pipes can be communicated through pipe fittings, the prefabrication requirement positions of the PVC detection pipes are accurate, the frame sections can be conveniently stacked and installed to achieve smooth through from top to bottom, and the prefabricated concrete outer frame device can provide sampling detection, on-line monitoring or provide auxiliary functions of pumping water or plugging the permeation pipes and the like.

(4) The concrete outer frame device is prefabricated, and at least four lifting rings are arranged on the periphery of each frame section and are used for the purposes of lifting the frame sections or installing and fixing slotted holes; the embedded parts connected with the water stopping devices are arranged inside and outside the outer frame section, the inner and outer water stopping devices which are possibly needed are arranged during field installation, and mounting holes need to be reserved on the upstream side of the water stopping devices for the frame section needing to stop water in the frame section, so that the inner water stopping devices are convenient to install and lay.

(5) According to the method, through mature vertical excavation equipment, underwater vertical excavation (the depth of domestic vertical excavation exceeds 100 meters), the special polymer slurry retaining wall is embedded into the relative impervious bed, the requirements of different groundwater seepage quantities are met, the installation depth can exceed 30 meters, only the hoisting capacity on site is required, and very complex geological and groundwater conditions can be met.

(6) Smooth straight frame unit for load modularization reaction medium becomes reality, and can change reaction medium in a flexible way, promote the reaction medium that has the pollution and seal the processing, avoided secondary pollution, reaction medium can be loaded in box or other members, thereby can used repeatedly.

(7) In the frame units, the combined installation of a serial, parallel and mixed arrangement structure can be realized by using the water stop device, a continuous structure and a guide door type structure of the permeable reactive wall can be realized, an embedded pipe system which is manufactured manually, controls hydraulic gradient and accelerates the flow of underground water is provided, and the underground water treatment device can be combined with a pumping and drainage and recharge system, so that the underground water treatment efficiency is greatly improved; in addition, the frame unit can load multiple reaction media (different reaction media can be arranged in different lattices) at the same time, so that multiple pollutants can be treated at the same time.

Although the present invention has been described in detail, the present invention is not limited thereto, and those skilled in the art can modify the principle of the present invention, and thus, various modifications made in accordance with the principle of the present invention should be understood to fall within the scope of the present invention.

Claims

1. A method of implementing a precast concrete permeable reactive wall frame, comprising:

at least one layer of frame unit assembly formed by combining a plurality of concrete frame units is arranged in an underground slotted hole with the depth reaching below a impervious bed, each frame unit comprises a plurality of frames arranged at intervals and is provided with a preset seepage hole for water to flow out, and a member filled with a reaction medium for treating underground polluted water is arranged in each frame;

the water stopping device is arranged between adjacent frame units in the frame unit assembly and used for preventing polluted water from flowing out from a gap between the adjacent frame units, so that a plurality of frame units in the frame unit assembly and the water stopping device form a layer of reaction wall frame body of the modularized permeable reaction wall; the water stopping device is provided with a water stopping fixing part which is long-strip-shaped and a plane and is fixedly connected with the surface of the first frame unit in the adjacent frame unit, and a convex part which extends outwards in an inclined way from the water stopping fixing part and is provided with an arc-shaped surface, and the tail end of the convex part can be in close contact with the surface of the second frame unit;

the arc-shaped surfaces of the convex part comprise a first arc-shaped surface and a second arc-shaped surface, wherein the starting end of the first arc-shaped surface is connected with one end close to the water stop fixing part, the starting end of the second arc-shaped surface is connected with the other end close to the water stop fixing part, the curvature radius of the first arc-shaped surface is smaller than that of the second arc-shaped surface, the circle center of the first arc-shaped surface and the circle center of the second arc-shaped surface are positioned on one side of the first arc-shaped surface, and the width between the first arc-shaped surface and the second arc-shaped surface is gradually narrowed from the starting end connected with the water stop fixing part to the tail end;

wherein any one of the first arc-shaped surface and the second arc-shaped surface can be used as an upstream surface for receiving the incoming flow of the polluted water body.

2. The method of claim 1, wherein the plurality of frame units are sequentially arranged along a length extending direction of the underground trench, and the plurality of frame units are connected to form a continuous modular reaction wall frame by a water stop device arranged between two adjacent frame units.

3. The method of claim 1, wherein the plurality of frame units are arranged in a front-to-back manner along a width direction of the underground trench, and the plurality of frame units are connected to form a guide-gate modular reaction wall frame by a water stop device arranged between two adjacent frame units in the front-to-back manner.

4. The method according to claim 1, wherein the plurality of frame units are sequentially arranged along the length and width directions of the underground slotted hole, and the plurality of frame units are connected through a water stop device arranged between two adjacent frame units to form a high-flow gate-guide type modular reaction wall frame.

5. The method of any one of claims 1-4, the multi-level frame unit assembly comprising a back frame unit for contact with the bottom of the underground slot, the back frame unit being a closed-sided and closed-bottomed section cast from concrete, a plurality of transverse reinforcing bars, a plurality of longitudinal reinforcing bars, and a plurality of vertical reinforcing bars.

6. The method of claim 5, the multi-level frame unit assembly further comprising a standard frame unit for fixed connection to the upper portion of the back frame unit, the standard frame unit being a closed sided frame section cast of concrete, a plurality of transverse reinforcement bars, a plurality of longitudinal reinforcement bars, and a plurality of vertical reinforcement bars.

7. The method of claim 6, wherein an alignment structure is disposed between the back frame unit and the standard frame unit for facilitating the butt joint therebetween.

8. The method of claim 7, the water stopping means comprising one or more water stopping units made of an elastic material.

9. An outer frame device for use in the method of constructing a precast concrete permeable reactive wall frame according to any one of claims 1 to 8, comprising:

at least one layer of frame unit assembly formed by combining a plurality of concrete frame units is arranged in an underground slotted hole with the depth reaching below a impervious bed, each frame unit comprises a plurality of frames arranged at intervals and is provided with a preset seepage hole for water to flow out, and a member filled with a reaction medium for treating underground polluted water is arranged in each frame; the water stopping device for preventing the polluted water from flowing out from a gap between the adjacent frame units in the frame unit assembly is arranged between the adjacent frame units, so that the plurality of frame units in the frame unit assembly and the water stopping device form a layer of reaction wall frame body of the modular permeable reaction wall;

wherein the water stop device is provided with a long-strip-shaped water stop fixing part of which one plane is fixedly connected with the surface of the first frame unit in the adjacent frame unit and a convex part which extends outwards in an inclined way from the water stop fixing part and is provided with an arc-shaped surface, the tail end of the convex part can be tightly contacted with the surface of the second frame unit,

wherein any one of the first and second arcuate surfaces may serve as an upstream surface to which an incoming flow of a contaminated body of water may be incident.