CN109763842B - Pump pipe for conveying concrete in long tunnel and construction method using pump pipe - Google Patents
Pump pipe for conveying concrete in long tunnel and construction method using pump pipe Download PDFInfo
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- CN109763842B CN109763842B CN201910149433.6A CN201910149433A CN109763842B CN 109763842 B CN109763842 B CN 109763842B CN 201910149433 A CN201910149433 A CN 201910149433A CN 109763842 B CN109763842 B CN 109763842B
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- 239000004567 concrete Substances 0.000 title claims abstract description 179
- 238000010276 construction Methods 0.000 title claims abstract description 16
- 238000004140 cleaning Methods 0.000 claims abstract description 29
- 239000011083 cement mortar Substances 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 238000004891 communication Methods 0.000 claims description 13
- 238000009736 wetting Methods 0.000 claims description 13
- 238000005086 pumping Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 239000010865 sewage Substances 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 abstract description 7
- 239000002699 waste material Substances 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 4
- 239000004568 cement Substances 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- 239000004570 mortar (masonry) Substances 0.000 description 9
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000275 quality assurance Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The invention discloses a pump pipe for conveying concrete in a long tunnel and a construction method using the pump pipe, wherein the pump pipe comprises a first three-valve pipe and a second three-valve pipe, each interface of the first three-valve pipe and each interface of the second three-valve pipe are provided with a stop valve, the first interface of the first three-valve pipe is used for connecting the concrete pump, a concrete pump pipe is arranged between the third interface of the first three-valve pipe and the first interface of the second three-valve pipe, a bin pipe is connected to the outside of the third interface of the second three-valve pipe, the second interface of the second three-valve pipe is used for connecting air compressing equipment, and the pump pipe cleaning ball is further used for realizing that excess concrete in the wet pipe cement mortar and concrete after the concrete is poured out of the tunnel through the concrete pump pipe, so that the cleaned cement mortar and concrete are transported to other structures for utilization, thereby not only reducing the waste of materials and the construction cost, but also avoiding pollution of the cement mortar or concrete and even damaging the high-standard anti-corrosion layer of the cement pipe, and ensuring the engineering quality.
Description
Technical Field
The invention relates to the field of building construction research, in particular to a pump pipe for conveying concrete in a long tunnel, and also relates to a construction method using the pump pipe.
Background
The Chinese operators are wide, the water resources are unevenly distributed in time and space, and more river-crossing water diversion projects are built to meet the requirements of social and economic development. Because the underground tunnel construction does not need to be removed in a land-sign manner, the method has no influence on ground buildings, road traffic and people's work and life basically, and the water flow conveyed by the tunnel is not polluted by the outside, the quality assurance degree of the water body is high, and the method is widely applied to cross-river basin water diversion engineering. However, the water diversion engineering tunnel is deeply buried underground, the internal and external water pressure of the tunnel and the load such as surrounding rock are large, and the internal and external load of the tunnel is generally borne by adopting a composite lining of concrete and steel pipes; in order to prevent the corrosion of the lining steel pipe, the bearing capacity of the composite lining of the concrete and the steel pipe and the rust pollution water quality are prevented from being reduced, the lining steel pipe needs to be subjected to high-standard anti-corrosion treatment before being installed, and damage and pollution in subsequent construction are strictly forbidden.
And constructing a tunnel lining 'concrete + steel pipe' after the tunnel is excavated and the primary lining, firstly installing the steel pipe in sections according to the design length, and pouring lining concrete in sections. Because the working procedures in the tunnel are more, the bin surface is small, concrete transportation is generally carried by adopting a concrete pump, namely the concrete pump is put outside the tunnel, a concrete conveying pump pipe is arranged in the tunnel, and concrete is pumped by the concrete pump and then is sent into a space between the lining steel pipe of the tunnel and the primary lining structure (or surrounding rock) of the tunnel by the concrete conveying pump pipe. In order to reduce the resistance of a dry pump pipe to concrete delivery, prevent the dry pump pipe from absorbing water of the concrete and adhering mortar in the concrete, before pumping the concrete, the concrete pump and the pump pipe are lubricated by the cement mortar delivered by the concrete pump and the pump pipe for delivering the concrete (the concrete pump and the pump pipe cannot be used as a part of lining concrete because the mortar proportion and the strength of the moistening pipe are different from those of the lining concrete), and the redundant mortar needs to be removed from a tunnel after the moistening pipe; after the concrete pouring is finished, the excess concrete in the conveying pump pipe is removed, and the conveying pump pipe is cleaned to prevent residual concrete slag from adhering to the pipe wall after solidification, so that the effective pipe diameter of the pump pipe is reduced and even blocked. In the existing concrete pumping technology, the mortar of the wetting pipe and the redundant concrete in the pipe after pouring are treated nearby a warehouse surface in a hole far away from a tunnel opening, for example, the mortar or the concrete is pressed out of the pumping pipe into the tunnel, and then the mortar or the concrete is washed away by water, so that the waste of the mortar or the concrete (especially the long tunnel, the long pumping pipe and more concrete in the pipe) can be caused, and on the one hand, the sewage and the polluted slag in the tunnel with small shan cross flow pollute the environment, and especially the inner wall anti-corrosion layer of the high-standard anti-corrosion steel pipe is polluted and damaged.
Disclosure of Invention
The invention aims to provide a pump pipe for conveying concrete in a long tunnel, which has a simple structure and can reduce the waste of wet mortar and redundant concrete in the pump pipe and the pollution of the operation warehouse surface.
The construction method is characterized in that the cement mortar and concrete in the wet pipe are conveyed out of the tunnel through the pump pipe after the cement mortar and concrete in the wet pipe are poured, and the cleaned cement mortar and concrete are conveyed to other structures for use, so that the waste of materials and the construction cost can be reduced.
The invention solves the technical problems as follows: the pump pipe for conveying concrete in the long tunnel comprises a first three-valve pipe and a second three-valve pipe, wherein each interface of the first three-valve pipe and each interface of the second three-valve pipe are respectively provided with a stop valve, a concrete pump pipe is arranged between the third interface of the first three-valve pipe and the first interface of the second three-valve pipe, a bin pipe is connected to the outside of the third interface of the second three-valve pipe, and the second interface of the second three-valve pipe is used for connecting air compressing equipment and further comprises a pump pipe cleaning ball capable of being placed in the concrete pump pipe.
As a further improvement of the technical scheme, a plurality of branch pipe three-valve pipes are arranged on the concrete pump pipe, stop valves are arranged on all interfaces of the branch pipe three-valve pipes, and the branch pipe three-valve pipes splice a plurality of concrete pump branches into the concrete pump pipe.
As a further improvement of the technical scheme, each stop valve is connected to a corresponding interface through a flange, a first third valve pipe is connected with a concrete pump pipe through a flange, and a second third valve pipe is connected with the concrete pump pipe and a storage pipe through flanges respectively.
As a further improvement of the technical scheme, the first interface and the third interface on the first third valve pipe are in a communication state, the second interface of the first third valve pipe is in a closed state, the first interface and the third interface on the second third valve pipe are in a communication state, and when the second interface of the second third valve pipe is in a closed state, the concrete pump, the first third valve pipe, the concrete pump pipe, the second third valve pipe and the warehouse entry pipe form a concrete conveying pipeline; the second connector and the third connector on the first three-valve pipe are in a communication state, the first connector of the first three-valve pipe is in a closed state, the first connector and the second connector on the second three-valve pipe are in a communication state, and when the third connector of the second three-valve pipe is in a closed state, the second three-valve pipe, the concrete pump pipe and the first three-valve pipe form a recovery pipeline.
The construction method using the pump pipe comprises the following steps,
1) After the high-standard corrosion-resistant steel pipe of the tunnel lining is installed and checked, connecting a first three-valve pipe with a discharge pipe of a concrete pump, connecting the concrete pump pipes in sequence until reaching a warehouse entry pipe, and connecting the concrete pump pipes with the warehouse entry pipe by adopting a second three-valve pipe;
2) Before formally pumping concrete, carrying out pipe wetting operation of a concrete pump pipe; opening the stop valves of the first interface and the third interface in the first three-valve pipe, opening the stop valve of the first interface in the second three-valve pipe, closing the stop valve of the second interface in the first three-valve pipe, and closing the stop valves of the second interface and the third interface in the second three-valve pipe;
3) Starting a concrete pump, and pumping the wet pipe cement mortar to a second three-valve pipe through the concrete pump, the first three-valve pipe and the concrete pump pipe;
4) Closing the concrete pump, closing a stop valve of a first interface in a first third valve pipe, and opening stop valves of a second interface and a third interface in the first third valve pipe; the pump pipe cleaning ball is plugged from the orifice of the stop valve of the second interface in the second three-valve pipe, and high-pressure gas is introduced, so that the high-pressure gas pushes the pump pipe cleaning ball and the residual cement mortar after wetting the pipe to return to the position of the first three-valve pipe, and the residual cement mortar is extruded from the orifice of the stop valve of the second interface in the first three-valve pipe, so that the wetting pipe of the concrete pump pipe is completed;
5) The method comprises the steps of opening a stop valve of a first interface and a second interface in a first three-way valve and a stop valve of the first interface and the second interface in the second three-way valve, closing the stop valve of the second interface in the first three-way valve and a stop valve of the second interface in the second three-way valve, starting a concrete pump, and conveying concrete to a warehouse entering warehouse through a concrete pump pipe;
6) After concrete pouring is completed, closing a stop valve of a first interface in the first valve pipe and a stop valve of a third interface in the second valve pipe, and opening a stop valve of the second interface and the third interface in the first valve pipe and a stop valve of the first interface and the second interface in the second valve pipe; and plugging the pump pipe cleaning ball into the stop valve pipe orifice of the second interface in the second three-valve pipe, and introducing high-pressure gas to enable the high-pressure gas to push the pump pipe cleaning ball and the excessive concrete to return to the first three-valve pipe after the concrete is poured, and extruding the concrete from the stop valve pipe orifice of the second interface in the first three-valve pipe to finish the cleaning of the concrete in the concrete pump pipe.
As a further improvement of the above technical solution, in step 4), the wet pipe cement mortar pressed out from the stop valve orifice of the second port in the first third valve pipe is collected.
As a further development of the above-mentioned solution, in step 6), the concrete pressed out of the shut-off valve orifice of the second port in the first third valve pipe is collected.
As a further improvement of the technical scheme, after the concrete in the concrete pump pipe is cleared out in the step 6), the stop valve of the second connector in the first three-valve pipe is closed, clear water is input from the stop valve pipe orifice of the second connector in the second three-valve pipe, then the pump pipe cleaning ball is plugged in, high-pressure gas is connected in, the stop valve of the second connector in the first three-valve pipe is opened, so that the high-pressure gas pushes the pump pipe cleaning ball and water in the concrete pump pipe to flow out from the stop valve pipe orifice of the second connector in the first three-valve pipe, the cleaning of the concrete pump pipe is completed, and sewage after the pump pipe is cleaned can be treated in a centralized manner.
The beneficial effects of the invention are as follows: according to the invention, through the first three-valve pipe, the second three-valve pipe and the auxiliary air compressing equipment, the effect that the cement mortar for wetting the pipe and the excessive concrete in the concrete pump pipe are conveyed out of the tunnel through the concrete pump pipe after the concrete is poured can be realized, and the cleaned cement mortar and concrete are conveyed to other structures for use, so that the waste of materials can be reduced, the construction cost can be reduced, the pollution of the cement mortar or the concrete can be avoided, even the corrosion-resistant layer of the high-standard corrosion-resistant steel pipe is damaged, and the engineering quality is ensured.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is evident that the drawings described are only some embodiments of the invention, but not all embodiments, and that other designs and drawings can be obtained from these drawings by a person skilled in the art without inventive effort.
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a schematic structural view of the first or second third valve pipe in the present invention.
Detailed Description
The conception, specific structure, and technical effects produced by the present invention will be clearly and completely described below with reference to the embodiments and the drawings to fully understand the objects, features, and effects of the present invention. It is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and that other embodiments obtained by those skilled in the art without inventive effort are within the scope of the present invention based on the embodiments of the present invention. In addition, all coupling/connection relationships mentioned herein do not refer to direct connection of the components, but rather, refer to the fact that a more optimal coupling structure may be formed by adding or subtracting coupling aids depending on the particular implementation.
Referring to fig. 1 and 2, a pump pipe for conveying concrete in a long tunnel comprises a first three-valve pipe 4 and a second three-valve pipe 6, wherein each interface of the first three-valve pipe 4 and the second three-valve pipe 6 is provided with a stop valve 14, a first interface 11 of the first three-valve pipe 4 is used for connecting a concrete pump 1, a concrete pump pipe 5 is arranged between a third interface of the first three-valve pipe 4 and a first interface 11 of the second three-valve pipe 6, a bin pipe 7 is connected to the outside of a third interface 13 of the second three-valve pipe 6, a second interface 12 of the second three-valve pipe 6 is used for connecting air compressing equipment, and a pump pipe cleaning ball capable of being placed in the concrete pump pipe 5 is further included. The three-way pipes of the first three-valve pipe 4 and the second three-valve pipe 6 are made of steel materials, and the stop valve 14 is made of steel pipes. The tee and the shut-off valve 14 may be welded as one piece or may be flanged.
The first port 11 and the third port 13 on the first three-valve pipe 4 are in a communication state, the second port 12 of the first three-valve pipe 4 is in a closed state, the first port 11 and the third port 13 on the second three-valve pipe 6 are in a communication state, and when the second port 12 of the second three-valve pipe 6 is in a closed state, the concrete pump 1, the first three-valve pipe 4, the concrete pump pipe 5, the second three-valve pipe 6 and the warehouse entry pipe 7 form a concrete conveying pipeline; the second port 12 and the third port 13 on the first three-valve pipe 4 are in a communication state, the first port 11 of the first three-valve pipe 4 is in a closed state, the first port 11 and the second port 12 on the second three-valve pipe 6 are in a communication state, and when the third port 13 of the second three-valve pipe 6 is in a closed state, the second three-valve pipe 6, the concrete pump pipe 5 and the first three-valve pipe 4 form a recovery pipeline.
The flow directions of mortar and concrete in the concrete pump pipe 5 can be conveniently controlled by opening and closing the stop valves 14 at different positions on the first three-valve pipe 4 and the second three-valve pipe 6, so that the purposes of wetting the pipe, conveying the concrete and cleaning out the cement mortar and the concrete in the pump pipe outside a tunnel are achieved, and waste, pollution or damage is avoided.
Further as a preferred embodiment, the concrete pump pipe 5 is provided with a plurality of branch pipe three-valve pipes, each joint of the branch pipe three-valve pipes is provided with a stop valve 14, and each branch pipe three-valve pipe is used for splicing a plurality of concrete pump branches into the concrete pump pipe 5. The branch three-valve pipe has the same structure as the first three-valve pipe 4 or the second three-valve pipe 6.
When the first three-valve pipe 4 and the second three-valve pipe 6 work, the second connector 12 of the branch pipe three-valve pipe can be closed, and the plurality of branch pipe three-valve pipes splice a plurality of concrete pump branch pipes into the concrete pump pipe 5, so that the concrete pump pipe 5 is applied to the first three-valve pipe 4 and the second three-valve pipe 6. And the third joint 13 of a certain branch pipe three-valve pipe can be closed according to the actual situation, the communication between the pipe and the second three-valve pipe 6 is cut off, and the second joint 12 of the branch pipe three-valve pipe is opened, so that the concrete pump pipe 5 outputs the redundant concrete in the pump pipe out of the tunnel after the pipe wetting cement mortar and the concrete are poured.
Further as a preferred embodiment, each of the shut-off valves 14 is connected to the corresponding port via a flange, the first third valve pipe 4 is connected to the concrete pump pipe 5 via a flange, and the second third valve pipe 6 is connected to the concrete pump pipe 5 and the storage pipe 7 via a flange, respectively. Instead of the flange connection, a clip connection may be used. The warehouse entry pipe 7 is provided with a warehouse entry pipe stop valve.
The construction method using the pump pipe comprises the following steps,
1) After the tunnel lining high-standard anti-corrosion steel pipe 8 is installed and checked, connecting the first three-valve pipe 4 with the discharging pipe 3 of the concrete pump 1, sequentially connecting the concrete pump pipe 5 until reaching the warehouse entry pipe 7, and connecting the concrete pump pipe 5 with the warehouse entry pipe 7 by adopting the second three-valve pipe 6;
2) Before formally pumping concrete, carrying out pipe wetting operation of a concrete pump pipe 5; opening the stop valves 14 of the first port 11 and the third port 13 in the first valve pipe 4, opening the stop valve 14 of the first port 11 in the second valve pipe 6, closing the stop valve 14 of the second port 12 in the first valve pipe 4, and closing the stop valves 14 of the second port 12 and the third port 13 in the second valve pipe 6;
3) The method comprises the steps of (1) discharging a lubricating pipe cement mortar with a surplus of 1-2 m3 calculated according to the total length of a concrete pump pipe 5 into a feed hopper 2 of a concrete pump 1, starting the concrete pump 1, and conveying the lubricating pipe cement mortar to a second three-valve pipe 6 through the concrete pump 1, a first three-valve pipe 4 and the concrete pump pipe 5;
4) Closing the concrete pump 1, closing the stop valve 14 of the first interface 11 in the first third valve pipe 4, and opening the stop valves 14 of the second interface 12 and the third interface 13 in the first third valve pipe 4; the pipe orifice of the stop valve 14 of the second interface 12 in the second three-valve pipe 6 is plugged into a pump pipe cleaning ball, high-pressure gas is accessed, so that the high-pressure gas pushes the pump pipe cleaning ball and the residual cement mortar after wetting the pipe to return to the position of the first three-valve pipe 4, and the residual cement mortar is extruded out of the pipe orifice of the stop valve 14 of the second interface 12 in the first three-valve pipe 4, so that the wetting pipe of the concrete pump pipe 5 is completed;
5) The stop valve 14 of the first interface 11 and the second interface 12 in the first three-way valve and the stop valve 14 of the first interface 11 and the second interface 12 in the second three-way valve are opened, the stop valve 14 of the second interface 12 in the first three-way valve and the stop valve 14 of the second interface 12 in the second three-way valve are closed, the concrete pump 1 is started, and concrete is conveyed to the warehouse inlet pipe 7 through the concrete pump pipe to enter a pouring warehouse;
6) After the concrete pouring is completed, closing the stop valve 14 of the first connector 11 in the first third valve pipe 4 and the stop valve 14 of the third connector 13 in the second third valve pipe 6, and opening the stop valve 14 of the second connector 12 and the third connector 13 in the first third valve pipe 4 and the stop valve 14 of the first connector 11 and the second connector 12 in the second third valve pipe 6; the pump pipe cleaning ball is plugged into the orifice of the stop valve 14 of the second interface 12 in the second three-valve pipe 6, and high-pressure gas is introduced, so that the high-pressure gas pushes the pump pipe cleaning ball and the excessive concrete after the concrete is poured is returned to the first three-valve pipe 4, and the excessive concrete is extruded out of the orifice of the stop valve 14 of the second interface 12 in the first three-valve pipe 4, so that the concrete in the concrete pump pipe 5 is cleaned.
Further as a preferred embodiment, in step 4), the wet pipe cement mortar pressed out of the orifice of the stop valve 14 of the second port 12 in the first third valve pipe 4 is collected. The pressed cement mortar may be collected and applied to a suitable building structure.
Further as a preferred embodiment, in step 6), the concrete pressed out of the orifice of the shut-off valve 14 of the second port 12 in the first third valve pipe 4 is collected. The concrete that is removed can be collected and applied to a suitable building structure.
Further as a preferred embodiment, after the concrete in the concrete pump pipe 5 is cleaned in the step 6), the stop valve 14 of the second connector 12 in the first three-valve pipe 4 is closed, clean water is input from the pipe orifice of the stop valve 14 of the second connector 12 in the second three-valve pipe 6, a pump pipe cleaning ball is plugged in, high-pressure gas is connected, the stop valve 14 of the second connector 12 in the first three-valve pipe 4 is opened, the high-pressure gas pushes the pump pipe cleaning ball and water in the concrete pump pipe 5 flows out from the pipe orifice of the stop valve 14 of the second connector 12 in the first three-valve pipe 4, the cleaning of the concrete pump pipe 5 is completed, and sewage after the pump pipe is cleaned can be treated in a concentrated manner. After the concrete pump pipe 5 is cleaned, the concrete pump pipe can be detached and installed to other bin applications.
In the foregoing method, the loading tube shut-off valve on the loading tube 7 may be opened or closed as necessary to facilitate smooth feeding or cleaning.
While the preferred embodiments of the present invention have been illustrated and described, the present invention is not limited to the embodiments, and various equivalent modifications and substitutions can be made by one skilled in the art without departing from the spirit of the present invention, and these are intended to be included in the scope of the present invention as defined in the appended claims.
Claims (6)
1. Pump pipe of concrete is carried in long tunnel, its characterized in that: the pump pipe comprises a first three-valve pipe and a second three-valve pipe, each interface of the first three-valve pipe and each interface of the second three-valve pipe are provided with a stop valve, the first interface of the first three-valve pipe is used for being connected with a concrete pump, a concrete pump pipe is arranged between the third interface of the first three-valve pipe and the first interface of the second three-valve pipe, a bin pipe is connected to the outside of the third interface of the second three-valve pipe, the second interface of the second three-valve pipe is used for being connected with air compressing equipment, and the pump pipe further comprises a pump pipe cleaning ball which can be arranged in the concrete pump pipe;
the stop valves are connected to the corresponding interfaces through flanges, the first third valve pipe is connected with the concrete pump pipe through a flange, and the second third valve pipe is connected with the concrete pump pipe and the warehouse entry pipe through flanges respectively;
the first interface and the third interface on the first three-valve pipe are in a communication state, the second interface of the first three-valve pipe is in a closed state, the first interface and the third interface on the second three-valve pipe are in a communication state, and when the second interface of the second three-valve pipe is in a closed state, the concrete pump, the first three-valve pipe, the concrete pump pipe, the second three-valve pipe and the warehouse entry pipe form a concrete conveying pipeline; the second connector and the third connector on the first three-valve pipe are in a communication state, the first connector of the first three-valve pipe is in a closed state, the first connector and the second connector on the second three-valve pipe are in a communication state, and when the third connector of the second three-valve pipe is in a closed state, the second three-valve pipe, the concrete pump pipe and the first three-valve pipe form a recovery pipeline.
2. The pump pipe for conveying concrete in a long tunnel according to claim 1, wherein: the concrete pump pipe is provided with a plurality of branch pipe three-valve pipes, each joint of the branch pipe three-valve pipes is provided with a stop valve, and each branch pipe three-valve pipe is used for splicing a plurality of concrete pump branches into the concrete pump pipe.
3. The construction method using the pump pipe is characterized in that: comprises the steps of,
1) After the high-standard corrosion-resistant steel pipe of the tunnel lining is installed and checked, connecting a first three-valve pipe with a discharge pipe of a concrete pump, connecting the concrete pump pipes in sequence until reaching a warehouse entry pipe, and connecting the concrete pump pipes with the warehouse entry pipe by adopting a second three-valve pipe;
2) Before formally pumping concrete, carrying out pipe wetting operation of a concrete pump pipe; opening the stop valves of the first interface and the third interface in the first three-valve pipe, opening the stop valve of the first interface in the second three-valve pipe, closing the stop valve of the second interface in the first three-valve pipe, and closing the stop valves of the second interface and the third interface in the second three-valve pipe;
3) Starting a concrete pump, and pumping the wet pipe cement mortar to a second three-valve pipe through the concrete pump, the first three-valve pipe and the concrete pump pipe;
4) Closing the concrete pump, closing a stop valve of a first interface in a first third valve pipe, and opening stop valves of a second interface and a third interface in the first third valve pipe; the pump pipe cleaning ball is plugged from the orifice of the stop valve of the second interface in the second three-valve pipe, and high-pressure gas is introduced, so that the high-pressure gas pushes the pump pipe cleaning ball and the residual cement mortar after wetting the pipe to return to the position of the first three-valve pipe, and the residual cement mortar is extruded from the orifice of the stop valve of the second interface in the first three-valve pipe, so that the wetting pipe of the concrete pump pipe is completed;
5) The method comprises the steps of opening a stop valve of a first interface and a second interface in a first three-way valve and a stop valve of the first interface and the second interface in the second three-way valve, closing the stop valve of the second interface in the first three-way valve and a stop valve of the second interface in the second three-way valve, starting a concrete pump, and conveying concrete to a warehouse entering warehouse through a concrete pump pipe;
6) After concrete pouring is completed, closing a stop valve of a first interface in the first valve pipe and a stop valve of a third interface in the second valve pipe, and opening a stop valve of the second interface and the third interface in the first valve pipe and a stop valve of the first interface and the second interface in the second valve pipe; and plugging the pump pipe cleaning ball into the stop valve pipe orifice of the second interface in the second three-valve pipe, and introducing high-pressure gas to enable the high-pressure gas to push the pump pipe cleaning ball and the excessive concrete to return to the first three-valve pipe after the concrete is poured, and extruding the concrete from the stop valve pipe orifice of the second interface in the first three-valve pipe to finish the cleaning of the concrete in the concrete pump pipe.
4. A construction method using a pump pipe according to claim 3, wherein: in step 4), the wet pipe cement mortar pressed out of the orifice of the stop valve of the second interface in the first valve pipe is collected.
5. A construction method using a pump pipe according to claim 3, wherein: in step 6), concrete pressed out of the shut-off valve orifice of the second port in the first third valve pipe is collected.
6. A construction method using a pump pipe according to claim 3, wherein: after the concrete in the concrete pump pipe is cleared out in the step 6), closing the stop valve of the second connector in the first three-valve pipe, inputting clear water from the stop valve pipe orifice of the second connector in the second three-valve pipe, plugging the pump pipe cleaning ball, accessing high-pressure gas, opening the stop valve of the second connector in the first three-valve pipe, so that the high-pressure gas pushes the pump pipe cleaning ball and water in the concrete pump pipe to flow out from the stop valve pipe orifice of the second connector in the first three-valve pipe, cleaning the concrete pump pipe is completed, and sewage after the pump pipe is cleaned can be treated in a concentrated mode.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910149433.6A CN109763842B (en) | 2019-02-28 | 2019-02-28 | Pump pipe for conveying concrete in long tunnel and construction method using pump pipe |
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| CN201910149433.6A CN109763842B (en) | 2019-02-28 | 2019-02-28 | Pump pipe for conveying concrete in long tunnel and construction method using pump pipe |
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| CN109763842A CN109763842A (en) | 2019-05-17 |
| CN109763842B true CN109763842B (en) | 2024-02-13 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6782925B2 (en) * | 2001-10-30 | 2004-08-31 | Bmp Environmental Group, Inc. | Concrete recovery method and system |
| CA2938252A1 (en) * | 2016-08-04 | 2018-02-04 | Wayne Wk Lau | Maunufactured gas wellpad expansion module |
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| CN103321426A (en) * | 2013-06-27 | 2013-09-25 | 中国新兴建设开发总公司 | Pumping concrete cleaning divider and application method thereof |
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| CN106939606A (en) * | 2017-03-30 | 2017-07-11 | 中国十七冶集团有限公司 | A kind of large area boat support frame casting method |
| CN107191222A (en) * | 2017-06-06 | 2017-09-22 | 太原理工大学 | A kind of utilization pressure-air conveys the device and method of lotion |
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