CN112281879B - Anti-seepage film connecting device for water-intercepting curtain and water-intercepting curtain construction method - Google Patents
Anti-seepage film connecting device for water-intercepting curtain and water-intercepting curtain construction method Download PDFInfo
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- CN112281879B CN112281879B CN202011190136.5A CN202011190136A CN112281879B CN 112281879 B CN112281879 B CN 112281879B CN 202011190136 A CN202011190136 A CN 202011190136A CN 112281879 B CN112281879 B CN 112281879B
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- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
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- E02D19/00—Keeping dry foundation sites or other areas in the ground
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- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/12—Restraining of underground water by damming or interrupting the passage of underground water
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Abstract
A seepage-proof membrane connecting device for a water-intercepting curtain and a construction method thereof comprise a box body, a connecting male head, a connecting female head, a supporting hole, a cavity and an air bag, wherein the box body is a hollow rectangular cylinder, the middle of the box body is a hollow cavity, the upper part of the box body is the connecting male head, and the center of the connecting male head is provided with a through pin hole; the lower part of the box body is provided with a connecting female head, the connecting male head and the connecting female head of each section of connecting device are fixed through pins and pin holes, a plurality of through supporting holes are arranged on the box body at intervals, and the air bag is embedded in the hollow cavity of the box body; therefore, the anti-seepage membrane curtain can effectively solve the problems of poor connectivity, untight lap joint, streaming of filling materials, difficulty in pulling up of a joint device and poor anti-seepage effect of adjacent anti-seepage membranes, realizes organic connection between each sequence of anti-seepage membranes, prevents slurry or concrete in a groove section from flowing back, reduces pulling up resistance of the connection device, and improves water interception efficiency of the anti-seepage membrane curtain.
Description
Technical Field
The invention relates to the technical field of underground seepage prevention and pollution control of opencast coal mine curtains, metal mine curtains, mine and mine curtains, pollutant isolation, municipal and industrial and civil building water interception curtains and the like, in particular to an seepage prevention film connecting device for a water interception curtain and a construction method thereof.
Background
The open pit coal mine in China is mostly located in a sandy gravel layer area with strong water-rich and strong supply, the stratum permeability coefficient is large, the water level of a mine pit is controlled or dredged down by the supply of a surface river, and the quantity of drained water is huge. The problems of large-area underground water level reduction, difficulty in domestic and production water of surrounding residents, death of shallow vegetation, land desertification, pollution of surface water body by mine pit water discharge, huge long-term drainage cost, high production cost and the like caused by long-term drainage are solved. The water interception curtain can realize the water resource and ecological environment protection of the open pit coal mine, and reduce the water resource cost. Meanwhile, in projects such as metal mines, underground mines water interception curtains, water conservancy project seepage prevention, refuse landfill pollutant isolation, municipal and industrial and civil construction water interception curtains and the like, in order to meet the strict seepage prevention requirement of the water interception curtain wall, an seepage prevention film is often adopted for intercepting and seepage prevention. Constructing a rectangular groove section in the stratum by grooving equipment such as a double-wheel milling machine, a hydraulic grooving machine, a rotary drilling rig and the like, continuously paving or overlappingly paving an anti-seepage film in the groove section, backfilling original soil between the anti-seepage film and the groove section, and filling cement-fly ash slurry, mortar or concrete.
In the prior art, the anti-seepage film vertical laying connection process adopts connection modes such as connection locks, joint boxes and welding, the laying depth in the groove section of the underground curtain wall is generally within 20m, when the depth is increased, the anti-seepage film vertical laying has extremely high requirements on the synchronization and verticality of two ends of the anti-seepage film, the lifting of the anti-seepage film is difficult to control, the flatness of the anti-seepage film is difficult to ensure, the anti-seepage film is easy to wrinkle, the anti-seepage film deviates from a preset position, the connection between the anti-seepage film and the anti-seepage film is difficult, the whole anti-seepage performance is weak, the continuity and the anti-seepage effect of the anti-seepage film are influenced, and the problems of large diffusion range of filling materials of a pouring groove section, backflow, joint consolidation, joint devices, increase of the pull-up force of the joint devices and the like exist at the same time.
Therefore, in view of the above-mentioned drawbacks, the present inventors have studied and designed an impermeable membrane connecting device for a waterproof curtain and a construction method thereof by taking into consideration the above-mentioned drawbacks through careful study and design and combining the experience and results of related industries for a long time, so as to overcome the above-mentioned drawbacks.
Disclosure of Invention
The invention aims to provide an anti-seepage film connecting device for a water interception curtain and a construction method thereof, which can effectively solve the problems of poor connectivity, untight lap joint, streaming of filling materials, difficulty in pulling up a connector device and poor anti-seepage effect of adjacent anti-seepage films, realize organic connection between each sequence of anti-seepage films, prevent backflow of slurry or concrete in a groove section, reduce pulling up resistance of the connecting device and improve the water interception efficiency of the anti-seepage film curtain.
In order to realize the aim, the invention discloses an anti-seepage film connecting device for a water-intercepting curtain, which comprises a box body, a connecting male head, a connecting female head, a supporting hole, a cavity and an air bag, and is characterized in that:
the box body is a hollow rectangular cylinder, a hollow cavity is arranged in the middle of the box body, a connecting male head is arranged at the upper part of the box body, the size of the connecting male head is smaller than that of the box body, and a through pin hole is formed in the center of the connecting male head; the lower part of box is female for connecting, the external dimension of connecting female is unanimous with the box, and the internal dimension is greater than the size of connecting public head, the center of connecting female sets up the pinhole that link up to connect public head and connect female realization multistage connecting device's orderly connection, and through the public head of the connection of every section connecting device of pin and pinhole and connect female head, the interval sets up the brace hole that a plurality of link up on the box, the brace hole is the rectangular cylinder, forms the support cavity through the steel sheet welding all around of brace hole, forms organic whole with the box, the gasbag is inlayed in the cavity intracavity portion of box.
Wherein: the top end of the connecting male head is provided with a thick plate-shaped hanging rib, the hanging rib is positioned in the middle of the top of the connecting male head, and the length of the hanging rib is consistent with the width of the box body; 2 symmetrical hanging rings are arranged at the top of the hanging rib.
Wherein: the hanging ring is hollow and round.
Wherein: the connecting male connector is made of the same material as the box body, and the connecting female connector is made of the same material as the box body.
Wherein: the supporting holes are arranged on the middle line of the box body of the connecting device, a plurality of through supporting holes are arranged at equal intervals from top to bottom, and the supporting holes are rectangular annular cylinders.
Wherein: each supporting hole is provided with a supporting column, and the size of each supporting hole is larger than that of each supporting column, so that the supporting columns penetrate through the supporting holes and are exposed at two sides to be used for the pulling device to pull up the connecting device.
Also discloses a construction method of the water interception curtain, which is characterized by comprising the following steps:
the method comprises the following steps: the groove section of the curtain wall is grooved by adopting a double-wheel mill, a hydraulic grab bucket or a rotary drilling rig;
step two: after the first curtain groove section is excavated, 1 impermeable film is laid in the curtain groove section;
step three: the 1 st section of connecting device is hoisted by a hoisting device, the 1 st section of connecting device is hoisted and lowered in a groove section at one end of the impermeable membrane, and the top of the connecting device penetrates through a supporting hole of a box body of the 1 st section of connecting device through a supporting column to be supported at two sides of the groove section;
step four: hoisting the 2 nd section connecting device by a hoisting device, butting an air bag in the 2 nd section connecting device with an air bag in the 1 st section connecting device, embedding and buckling a connecting female head at the lower end of the 2 nd section connecting device with a connecting male head at the upper end of the 1 st section connecting device, continuously lowering the connecting device, and enabling the top of the 2 nd section connecting device to penetrate through a supporting hole of the box body through a supporting column to be supported on two sides of the groove section;
step five: hoisting the (i + 1) th section of connecting device by using a hoisting device, butting an airbag in the (i + 1) th section of connecting device with an airbag in the (i) th section of connecting device, embedding and buckling a connecting female head at the lower end of the (i + 1) th section of connecting device with a connecting male head at the upper end of the (i) th section of connecting device, continuously lowering the connecting device, and enabling the top of the (i + 1) th section of connecting device to penetrate into a supporting hole of a box body through a supporting column to be supported on two sides of a groove section;
step six: repeating the fourth step until the connecting device is lowered to the bottom of the groove section of the curtain wall, lowering m sections of the connecting device altogether, connecting the m-1-time air bags, and anchoring the connecting male head and the connecting female head of the connecting device for m-1 times;
step seven: repeating the second step and the sixth step, and placing a 2 nd row connecting device in the curtain groove section next to the 1 st row connecting device;
step eight: inflating the air bags in the connecting devices of the 1 st row and the 2 nd row through the inflating devices to fill the cavities in the box bodies of the connecting devices, and squeezing away the slurry in the cavities in the box bodies;
step nine: filling materials of cement-fly ash slurry, concrete and clay slurry are poured into the curtain groove section defined by the connecting device, the 2 rows of connecting devices block the filling materials in the groove section, so that the diffusion of the filling materials is avoided, and the air bag prevents the filling materials in the groove section from flowing back and recharging the cavity of the connecting device;
step ten: after the filling material in the groove section of the curtain wall is initially solidified, sequentially discharging the gas of the air bags of the inner row of connecting devices and the outer row of connecting devices;
step eleven: sequentially pulling the outer row connecting device and the inner row connecting device section by section through a hydraulic pulling device, and disassembling the air bag connecting section of each section of connecting device;
step twelve: after the inner and outer 2 rows of connecting devices of the impermeable membrane curtain groove section are pulled up, one end of the impermeable membrane in the groove section is left at the curtain groove section without filling materials, which is 1-2 m wide, so that the impermeable membranes of the adjacent groove sections can be conveniently placed, and the effective lap joint range of 1-2 m is realized;
step thirteen: and repeating the steps one to twelve, realizing the section-by-section excavation of the impermeable membrane curtain, the section-by-section laying of the impermeable membrane and the effective connection of each section of impermeable membrane, and combining the impermeable membrane and the backfill or perfusion material into an organic whole under the combined action of the filling material of the curtain groove section and the impermeable membrane.
As can be seen from the above, the penetration preventing film coupling apparatus for a water intercepting curtain and the construction method thereof of the present invention have the following effects:
1. the anti-seepage film curtain wall connecting device realizes the organic connection between each sequence of anti-seepage films, prevents the backflow of slurry or concrete in the groove section and improves the water interception efficiency of the anti-seepage film curtain.
2. The connecting device is lightweight and the multi-section connecting device is quickly and vertically connected, the strength and the integrity of the connecting device are improved, the weight of the connecting device is reduced, the pulling resistance of the connecting device is reduced, and the orderly connection of the multi-section connecting device is realized.
3. The connecting device is prevented from being filled with the filling material in the groove section to flow back, the air bag is arranged in the cavity of the connecting device, so that the air bag is filled in the cavity of the connecting device, and the filling material cannot flow back into the cavity and the adjacent groove section under the protection of the inflatable air bag.
4. The connecting device is convenient to pull out, the hydraulic jack is adopted to pull out the connecting device section by section, and the connecting device is pulled out section by section, conveniently and quickly under the action of the supporting columns, the supporting holes and the box body in jacking under the combined action of the supporting columns, the supporting holes and the box body.
The details of the present invention can be obtained from the following description and the attached drawings.
Drawings
FIG. 1 shows a schematic view of the construction of an impermeable membrane connecting apparatus for a water intercepting curtain of the present invention.
Figure 2 shows a top view of the present invention.
Figure 3 shows a schematic cross-sectional view of the present invention.
Figure 4 shows a pin schematic of the present invention.
Figure 5 shows a schematic view of a support post of the present invention.
Figure 6 shows a schematic working plane of the invention.
Figure 7 shows a schematic view of the working side of the invention.
Reference numerals:
1. the anti-seepage device comprises a box body, 2 parts of a hanging rib, 3 parts of a hanging ring, 4 parts of a pin hole, 4-1 parts of a pin, 5 parts of a supporting column, 6 parts of a connecting male head, 7 parts of a connecting female head, 8 parts of a supporting hole, 9 parts of a cavity, 10 parts of an air bag, 11 parts of an excavation groove section, 12 parts of an anti-seepage film, 12-1 parts of an anti-seepage film, 12-2 parts of an anti-seepage film, 13 parts of a groove section filling material, 14 parts of an anti-seepage film connecting section.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments and the accompanying drawings. In which like parts are designated by like reference numerals.
Referring to fig. 1 to 7, the invention discloses an anti-seepage membrane connecting device for a water cut curtain, which at least comprises a box body 1, a hanging rib 2, a hanging ring 3, a pin hole 4, a support column 5, a connecting male head 6, a connecting female head 7, a support hole 8, a cavity 9 and an air bag 10.
The box body 1 is a hollow rectangular cylinder welded (or cast) by steel plates, the strength and the integrity of the connecting device are improved by the welded steel plates or the cast light materials, a hollow cavity 9 is arranged in the middle of the box body 1, the overall weight of the connecting device is reduced by the hollow cavity 9, a connecting male head 6 is arranged at the upper part of the box body 1, the size of the connecting male head 6 is slightly smaller than that of the box body, a through pin hole 4 is arranged in the center of the connecting male head 6, and the pin hole 4 is cylindrical; the lower part of the box body 1 is provided with a female connecting head 7, the outer size of the female connecting head 7 is consistent with that of the box body 1, the inner size of the female connecting head 7 is slightly larger than that of the male connecting head 6 so as to realize quick connection, the center of the female connecting head 7 is provided with a through pin hole 4, the pin hole 4 is cylindrical and corresponds to the pin hole 4 of the male connecting head 6, a plurality of through support holes 8 are arranged at intervals on the box body 1, the support holes 8 are rectangular cylinders, the periphery of each support hole 8 is welded by steel plates or cast by light rigid materials to form a support cavity, the support cavity and the box body 1 form an organic whole, and the air bag 10 is embedded in the hollow cavity 9 of the box body and can be manually controlled to be inflated and deflated; the top end of the connecting male head 6 is provided with a thick plate-shaped hanging rib 2, the hanging rib 2 is positioned in the middle of the top of the connecting male head 6, and the length of the hanging rib is consistent with the width of the box body 1; 2 symmetrical rings 3 are arranged at the top of the lifting rib 2, the rings 3 are hollow and circular, so that the connection of multiple sections of connecting devices can be realized by the male connecting head 6 and the female connecting head 7, and the male connecting head 6 and the female connecting head 7 of each section of connecting device are fixed through the pins 4-1 and the pin holes 4.
Wherein, it is the same with the box material to connect public first material, it is the same with the box material to connect female first material, and the size slightly is less than the box size, connects public first center and sets up 1 cylindrical pinhole that link up, connects public first can be as an organic whole with other connecting device's the female first zonulae occludens of connection to it is fixed with the pinhole through the pin.
The support holes are arranged on the middle line of the box body of the connecting device, a plurality of through support holes are arranged at equal intervals from top to bottom, the support holes are rectangular annular cylinders, the size of each support hole is slightly larger than that of each support column, the support columns can penetrate through the support holes and are exposed at two sides, the pulling-out devices can fix the support columns at two ends, and the connecting device is pulled out upwards under the action of pulling-out force.
The top of the hanging rib is provided with 2 symmetrical hanging rings which are hollowed out in a circular shape, the hoisting machine can be connected with the hanging rings through a steel wire rope, the anti-seepage film connecting device is hoisted and moved, and the anti-seepage film device is assembled, disassembled, moved and moved.
The air bag is embedded in the hollow cavity of the box body, the air bag can be artificially controlled to be inflated and deflated as required, the air bag of each section of connecting device is an independent unit, and the air bag is communicated with the air bag in the adjacent section of connecting device through an air pipe, so that the connecting device can be followed to carry out multi-section assembly.
The invention also discloses a construction method of the waterproof curtain, which is implemented by the waterproof membrane connecting device for the waterproof curtain, wherein the waterproof membrane connecting device for the waterproof curtain comprises N sections of connecting devices, the N sections of connecting devices can be arranged along the direction of the notch of the lap joint section of the waterproof membrane which is vertically paved, wherein N is 1, 2, 3, … … and 2m, and m is an integer; the method for constructing the water interception curtain can comprise the following steps:
the method comprises the following steps: the curtain wall groove section 1 is formed by adopting a double-wheel milling machine, a hydraulic grab bucket or a rotary drilling rig, has the width of 600mm, 800mm or 1000mm and the like, has the depth reaching the design depth, is generally positioned in a water-resisting layer, and encloses a foundation pit, a pollutant diffusion area, an open pit or a well mine.
Step two: excavating a water interception curtain groove section 11 according to the design range and size, and after the excavation is finished for a first curtain groove section, firstly laying 1 impermeable film 12 in the curtain groove section 11;
step three: the 1 st section of connecting device is hoisted by a hoisting device, the 1 st section of connecting device is hoisted and lowered in a groove section 11 at one end of the impermeable membrane 12-1, and the top of the connecting device penetrates into a supporting hole 8 of a box body 1 of the 1 st section of connecting device through a supporting column 5 and is supported at two sides of the groove section 11;
step four: hoisting the 2 nd section connecting device by a hoisting device, butting an air bag 10 in the 2 nd section connecting device and the 1 st section connecting device, embedding and buckling a connecting female head 7 at the lower end of the 2 nd section connecting device and a connecting male head 6 at the upper end of the 1 st section connecting device, anchoring the 2 nd section connecting device and the 1 st section connecting device by adopting a pin 4-1, continuously lowering the connecting devices, and supporting the tops of the 2 nd section connecting devices at the two sides of a groove section 11 by penetrating support holes 8 of a box body through support pillars 5;
step five: hoisting the (i + 1) th section of connecting device by using a hoisting device, butting an airbag 10 in the (i + 1) th section of connecting device and an airbag in the (i) th section of connecting device, embedding and buckling a female connecting head 7 at the lower end of the (i + 1) th section of connecting device and a male connecting head 6 at the upper end of the (i) th section of connecting device, anchoring the (i + 1) th section of connecting device and the (i) th section of connecting device by using a pin 4-1, continuously lowering the connecting device, and enabling the top of the (i + 1) th section of connecting device to penetrate into a supporting hole 8 of the box body 1 through a supporting column 5 and be supported at two sides of a groove section 11;
step six: repeating the fourth step until the connecting device is lowered to the bottom of the groove section 11 of the curtain wall, lowering m sections of the connecting device altogether, connecting the m-1 times of airbags 10, and anchoring the connecting male head 6 and the connecting female head 7 of the connecting device for m-1 times by using the pins 4-1;
step seven: repeating the second step and the sixth step, and placing a 2 nd row connecting device in the curtain groove section 11 next to the 1 st row connecting device;
step eight: inflating the air bags 10 in the connecting devices of the 1 st row and the 2 nd row by using an inflating device to fill the cavities 9 in the box bodies 1 of the connecting devices, and squeezing away the slurry in the cavities 9 in the box bodies;
step nine: filling materials 13 such as cement-fly ash slurry, concrete, clay slurry and the like are poured into the curtain groove section 11 defined by the connecting device, the 2 rows of connecting devices block the filling materials 13 in the groove section 11, so that the diffusion of the filling materials 13 is avoided, and the air bag 10 prevents the filling materials 13 in the groove section 11 from flowing back and recharging the connecting device cavity 9;
step ten: after the filling material 13 in the groove section of the curtain wall is initially set, the air in the air bags 10 of the inner row and the outer row of connecting devices is discharged in sequence;
step eleven: sequentially pulling the outer row connecting device and the inner row connecting device section by section through a hydraulic pulling device, and disassembling the connecting section of the air bag 10 of each section of connecting device;
step twelve: after the inner and outer 2 rows of connecting devices of the impermeable membrane curtain groove section are pulled up, one end of the impermeable membrane 12-1 in the groove section is provided with a curtain groove section 11 without filling materials 13, the width of the impermeable membrane 12-1 is 1-2 m, the impermeable membrane 12-2 of the adjacent groove section is convenient to put down, and the effective lap joint range 14 of 1-2 m is realized;
step thirteen: and repeating the first step to the twelfth step to realize the section-by-section excavation of the impervious film curtain, the section-by-section laying of the impervious films 12 and the effective connection of each section of the impervious films 12, and under the combined action of the filling material 13 of the curtain groove section 11 and the impervious films 12, the impervious films 12 and the backfill or perfusion material 13 are combined into an organic whole, so that the impervious capability and the impervious grade of the curtain wall are further improved.
Through the steps one to thirteen, the continuous construction of the impermeable membrane waterproof curtain is realized, the waterproof efficiency of the impermeable membrane waterproof curtain is improved, and the comprehensive permeability coefficient of the waterproof curtain in the field practical application reaches 10-7cm/s, good water interception effect; and realized connecting device lightweight and the quick vertical connection of multistage connecting device, improved connecting device's intensity and wholeness, alleviateed connecting device's weight, realized multistage connecting device's orderly connection, improved efficiency of construction 20%. The invention prevents the filling material in the groove section from flowing back and diffusing, reduces the diffusion of the filling material to the sand-gravel layer and the cavity of the connecting device, and saves the filling material of the groove section by about 10 percent; and the laying efficiency of each order of impermeable films and the stability of connection quality are improved, and the effective overlapping rate of each order of HDPE impermeable films is improved by more than 20%.
As can be seen from the above, the anti-seepage film connecting device for the water intercepting curtain and the construction method thereof according to the present invention have the following advantages compared with the prior art:
1. the anti-seepage film curtain wall connecting device realizes the organic connection between each sequence of anti-seepage films, prevents the backflow of slurry or concrete in the groove section and improves the water interception efficiency of the anti-seepage film curtain.
2. The connecting device is lightweight and the multi-section connecting device is quickly and vertically connected, the strength and the integrity of the connecting device are improved, the weight of the connecting device is reduced, the pulling resistance of the connecting device is reduced, and the orderly connection of the multi-section connecting device is realized.
3. The connecting device is prevented from being filled with the filling material in the groove section to flow back, the air bag is arranged in the cavity of the connecting device, so that the air bag is filled in the cavity of the connecting device, and the filling material cannot flow back into the cavity and the adjacent groove section under the protection of the inflatable air bag.
4. The connecting device is convenient to pull out, the hydraulic jack is adopted to pull out the connecting device section by section, and the connecting device is pulled out section by section, conveniently and quickly under the action of the supporting columns, the supporting holes and the box body in jacking under the combined action of the supporting columns, the supporting holes and the box body.
It should be apparent that the foregoing description and illustrations are by way of example only and are not intended to limit the present disclosure, application or uses. While embodiments have been described in the embodiments and depicted in the drawings, the present invention is not limited to the particular examples illustrated by the drawings and described in the embodiments as the best mode presently contemplated for carrying out the teachings of the present invention, and the scope of the present invention will include any embodiments falling within the foregoing description and the appended claims.
Claims (5)
1. The utility model provides a prevention osmosis membrane connecting device for intercepting water curtain, includes the box, connects public head, connects female head, supported hole, cavity and gasbag, its characterized in that:
the box body is a hollow rectangular cylinder, a hollow cavity is arranged in the middle of the box body, a connecting male head is arranged at the upper part of the box body, the size of the connecting male head is smaller than that of the box body, and a through pin hole is formed in the center of the connecting male head; the lower part of the box body is provided with a connecting female head, the outer size of the connecting female head is consistent with that of the box body, the inner size of the connecting female head is larger than that of the connecting male head, the center of the connecting female head is provided with a through pin hole, so that the connecting male head and the connecting female head can be connected in order by a plurality of sections of connecting devices, the connecting male head and the connecting female head of each section of connecting device are fixed by pins and pin holes, a plurality of through supporting holes are arranged at intervals on the box body, the supporting holes are rectangular cylinders, the periphery of each supporting hole is welded by steel plates to form a supporting cavity, the supporting cavity and the box body form an organic whole, the air bags are embedded in the hollow cavity of the box body, the air bags of each section of connecting device are independent units and are communicated with the air bags in the adjacent sections of connecting devices through air pipes, and can be assembled in a plurality of sections along with the connecting devices;
the top of connecting public head is equipped with the thick platelike muscle of hanging, the top of hanging the muscle sets up the rings of 2 symmetries, rings are the fretwork circular, and each supported hole is equipped with the support column, thereby the size support column that the size of supported hole is greater than the support column passes the supported hole and exposes in both sides and supplies the pull-out device to pull out connecting device.
2. An impermeable membrane connecting device for a waterproof curtain according to claim 1, wherein: the hanging rib is located at the middle position of the top of the connecting male head, and the length of the hanging rib is consistent with the width of the box body.
3. An impermeable membrane connecting device for a waterproof curtain according to claim 1, wherein: the connecting male connector is made of the same material as the box body, and the connecting female connector is made of the same material as the box body.
4. An impermeable membrane connecting device for a waterproof curtain according to claim 1, wherein: the supporting holes are arranged on the middle line of the box body of the connecting device, and a plurality of through supporting holes are arranged at equal intervals from top to bottom.
5. A construction method of a waterproof curtain comprising the impermeable film connecting apparatus for a waterproof curtain as claimed in any one of claims 1 to 4, characterized by comprising the steps of:
the method comprises the following steps: the groove section of the curtain wall is grooved by adopting a double-wheel mill, a hydraulic grab bucket or a rotary drilling rig;
step two: after the first curtain groove section is excavated, 1 impermeable film is laid in the curtain groove section;
step three: the 1 st section of connecting device is hoisted by a hoisting device, the 1 st section of connecting device is hoisted and lowered in a groove section at one end of the impermeable membrane, and the top of the connecting device penetrates through a supporting hole of a box body of the 1 st section of connecting device through a supporting column to be supported at two sides of the groove section;
step four: hoisting the 2 nd section connecting device by a hoisting device, butting an air bag in the 2 nd section connecting device with an air bag in the 1 st section connecting device, embedding and buckling a connecting female head at the lower end of the 2 nd section connecting device with a connecting male head at the upper end of the 1 st section connecting device, continuously lowering the connecting device, and enabling the top of the 2 nd section connecting device to penetrate through a supporting hole of the box body through a supporting column to be supported on two sides of the groove section;
step five: hoisting the (i + 1) th section of connecting device by using a hoisting device, butting an airbag in the (i + 1) th section of connecting device with an airbag in the (i) th section of connecting device, embedding and buckling a connecting female head at the lower end of the (i + 1) th section of connecting device with a connecting male head at the upper end of the (i) th section of connecting device, continuously lowering the connecting device, and enabling the top of the (i + 1) th section of connecting device to penetrate into a supporting hole of a box body through a supporting column to be supported on two sides of a groove section;
step six: repeating the fourth step until the connecting device is lowered to the bottom of the groove section of the curtain wall, lowering m sections of the connecting device altogether, connecting the m-1-time air bags, and anchoring the connecting male head and the connecting female head of the connecting device for m-1 times;
step seven: repeating the second step and the sixth step, and placing a 2 nd row connecting device in the curtain groove section next to the 1 st row connecting device;
step eight: inflating the air bags in the connecting devices of the 1 st row and the 2 nd row through the inflating devices to fill the cavities in the box bodies of the connecting devices, and squeezing away the slurry in the cavities in the box bodies;
step nine: filling materials of cement-fly ash slurry, concrete and clay slurry are poured into the curtain groove section defined by the connecting device, the 2 rows of connecting devices block the filling materials in the groove section, so that the diffusion of the filling materials is avoided, and the air bag prevents the filling materials in the groove section from flowing back and recharging the cavity of the connecting device;
step ten: after the filling material in the groove section of the curtain wall is initially solidified, sequentially discharging the gas of the air bags of the inner row of connecting devices and the outer row of connecting devices;
step eleven: sequentially pulling the outer row connecting device and the inner row connecting device section by section through a hydraulic pulling device, and disassembling the air bag connecting section of each section of connecting device;
step twelve: after the inner and outer 2 rows of connecting devices of the impermeable membrane curtain groove section are pulled up, one end of the impermeable membrane in the groove section is left at the curtain groove section without filling materials, which is 1-2 m wide, so that the impermeable membranes of the adjacent groove sections can be conveniently placed, and the effective lap joint range of 1-2 m is realized;
step thirteen: and repeating the steps one to twelve, realizing the section-by-section excavation of the impermeable membrane curtain, the section-by-section laying of the impermeable membrane and the effective connection of each section of impermeable membrane, and combining the impermeable membrane and the backfill or perfusion material into an organic whole under the combined action of the filling material of the curtain groove section and the impermeable membrane.
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| CN114032913B (en) * | 2021-11-02 | 2023-07-28 | 上海市基础工程集团有限公司 | Device and method for filling lock catch air bags of underground cement soil continuous steel wall |
| CN114277852A (en) * | 2021-12-02 | 2022-04-05 | 内蒙古平庄煤业(集团)有限责任公司 | Water-intercepting curtain ultra-deep impervious wall joint box and construction method |
| CN114277739A (en) * | 2021-12-02 | 2022-04-05 | 内蒙古平庄煤业(集团)有限责任公司 | Water-intercepting curtain impervious wall joint box slow-jacking device and joint box pulling method |
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