CN110485468A - A kind of water rich strata presets the permanent round-seal reservoir and its construction method of push pipe door opening - Google Patents
A kind of water rich strata presets the permanent round-seal reservoir and its construction method of push pipe door opening Download PDFInfo
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- CN110485468A CN110485468A CN201910731042.5A CN201910731042A CN110485468A CN 110485468 A CN110485468 A CN 110485468A CN 201910731042 A CN201910731042 A CN 201910731042A CN 110485468 A CN110485468 A CN 110485468A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/08—Lowering or sinking caissons
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/16—Jointing caissons to the foundation soil, specially to uneven foundation soil
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/125—Manhole shafts; Other inspection or access chambers; Accessories therefor characterised by the lining of the shaft
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/16—Arrangement or construction of joints in foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
- E02D31/02—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
- E02D31/025—Draining membranes, sheets or fabric specially adapted therefor, e.g. with dimples
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- General Engineering & Computer Science (AREA)
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- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Revetment (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The present invention provides permanent round-seal reservoirs and its construction method that a kind of water rich strata presets push pipe door opening.The method specifically includes following steps: the designs of the functional requirement of (one) round-seal reservoir；(2) round-seal reservoir enclosed structure open caisson construction；(3) interim edge protection construction；(4) earth excavation in well；(5) round-seal reservoir back cover；(6) it is installed into the ladder of round-seal reservoir；(7) seam treating seepage；(8) sealing pressing plate in hole is installed；(9) sandwiched concrete board wall at the top of door opening is preset to be promoted；(10) push pipe jacking construction；The related works such as the connection of (11) well interior conduit, valve installation are implemented and are checked and accepted；(12) interim edge protection is removed, round-seal reservoir top blind flange, inspection shaft installation and waterproof construction.Structural system definite functions that the present invention constructs, it is safe and efficient, design is dexterous many advantages, such as, it especially overcomes the broke-out diseases that push pipe penetrates during the borehole wall and gushes sand security risk, the non-excavating construction for underground pipings such as water conservancy, municipal administration, heating power, communications provides new method.
Description
Technical field
The invention belongs to the non-excavating construction of the infrastructure such as water conservancy, municipal administration, heating power, communication and field is repaired, is specifically related to
And non-excavating construction for underground pipings such as water conservancy, municipal administration, heating power, communications and reparation provide a kind of water rich strata and preset push pipe
The permanent round-seal reservoir and its construction method of door opening.
Background technique
The progress faster of urbanization will not only create a large amount of underground foundation auxiliary facility, be also faced with a large amount of old undergrounds
The rectification upgrade problem of pipeline, so that many urban road underground pipe networks are extremely complex, road surface caused by underground piping damages collapses
It collapses frequent with safety accident.In the case where current requirement and environmentally protective theory are increasingly paid attention to by people, conventional excavation landfill
Formula construction, not only construction efficiency is low, is also faced with serious settlement after construction, is chiefly used in shallow embedding formula rainwater, the sewage pipe of newly built city district
The construction in road.The no-excavation construction methods such as Directional Drilling, jacking construction are increasingly becoming the mainstream technology of urban Underground pipeline, wherein pushing up
Pipe construction be can effectively avoid and be conflicted with the existing pipeline in top, it is only necessary to which smaller range is set because its section selection is flexible, buried depth is larger
Corresponding active well, received well and relay well etc. are set, the underground pipeline construction needs of long range can be realized, increasingly by work
The attention of Cheng Shi.In addition, the rectification upgrade problem of a large amount of old pipe network in old town, construct small bore piping lane using push pipe formula
When structure, urgent need will add odd-job well, with greater need for a certain number of permanent active wells are arranged, to guarantee underground utilities
Operation maintenance needs.Currently, about active well, received well and in continue between design and construction, still mainly selection fetching water or
Upside-down well technique, although securely and reliably, cost is high, long in time limit, also occasionally there are difficulty of sinking, inclination and misoperations to cause
Unstability accident etc..
Especially South China Urban, river gather, and level of ground water is high, and the overwhelming majority belongs to water rich strata, throw to save
Money, active well generally double as fixed installation inspection-pit use, at the same time, the construction of water rich strata active well be one very
Difficult process, is mainly reflected in construction technology and quality control aspect is required to consider underground water bring adverse effect.This
Outside, before the link of most critical is water rich strata jacking construction, back pullout (BPO) hole is an extremely dangerous process, and not only time-consuming,
Task difficulty is big, expends long in time limit, piping, drift sand and periphery easily occurs and the accidents such as collapses.As it can be seen that seeking a kind of suitable for richness
The active well of the more secure and reliable on water stratum and the design and construction method of push pipe door opening become the great need that industry further develops
It asks.
Summary of the invention
Non-excavating construction and reparation growth requirement and current rich water for underground pipings such as water conservancy, municipal administration, heating power, communications
Active well design and construction in stratum are existing insufficient, and the present invention provides the permanent circles that a kind of water rich strata presets push pipe door opening
Active well and its design and construction method.The present invention is that the safety and purposes of round-seal reservoir are built from water rich strata, for the first time
The theory that novelty is proposed and implemented using push pipe door opening using thin-walled plain concrete cavity and the design of active well structure synchronization, and
Sandwiched concrete board wall design and construction process is firstly introduced in active well structural system.It can completion water safely and fast using the present invention
Round-seal reservoir needed for the non-excavating construction of underground pipings such as benefit, municipal administration, heating power, communication is built, and in well after operation, is increased
Add active well top blind flange and water-proofing treatment, needed for the non-excavating construction as underground pipings such as water conservancy, municipal administration, heating power, communications
Round-seal reservoir design and construction new method, not only securely and reliably, technical concept it is advanced but also economic and practical, can do permanent
Sex work well uses.
Technical solution of the present invention specifically:
A kind of construction method of the permanent round-seal reservoir of the default push pipe door opening of water rich strata, includes the following steps,
(1) the functional requirement design of round-seal reservoir, comprising:
(1) related data is collected, determines the processing side for meeting the planar dimension of job requirements, depth and active well back cover in well
Formula；
(2) absolute altitude and diameter of default push pipe door opening are determined according to the position of proposed pipeline, diameter, material and connection type etc.,
The quantity of default push pipe door opening is at least one；
(3) Structure Calculation and drawing of round-seal reservoir: being analyzed using beam element method and numerical simulation comparing calculation, is obtained most
Excellent round-seal reservoir supporting construction composition, then draws, completes the design work of round-seal reservoir functional requirement；
(2) specific step is as follows for the construction of the building enclosure open caisson of round-seal reservoir:
(1) preparation before open caisson construction: including place leveling, unwrapping wire, first floor earth excavation, compacting substrate, levelling unwrapping wire,
It tests line, sanding bed course, blade foot formwork, tie up reinforcing bar, well bore template, casting concrete, maintenance, demoulding；
(2) open caisson merogenesis sinking construction: including sinking to preparing, vertical transportation machinery and draining pump, observation, correction, merogenesis being arranged
Sink down into designed elevation, verification absolute altitude；
(3) thin-walled plain concrete cavity is arranged in merogenesis in the vertical axis of default push pipe door opening during pouring open caisson, thin
Sandwiched concrete board wall is inserted into wall plain concrete cavity；
(4) material of the building enclosure of round-seal reservoir uses armored concrete, or using steel member as round-seal reservoir
Permanent structure, and carry out anti-corrosion measure；
(3) edge protection is constructed: built-in fitting being arranged when round-seal reservoir building enclosure open caisson construction pours, edge protection is logical
Bolt is crossed to connect with built-in fitting；
(4) round-seal reservoir earth excavation: during open caisson construction, the position earthwork waterborne is directly excavated, the underwater portion soil body,
It is loosened the soil using giant, hydraulic grab is cut the earth or Pump breath countercirculate technique is cut the earth；
(5) it round-seal reservoir back cover: to meet subsequent construction needs, using concrete to round-seal reservoir sealing, first adopts
Stability against floating is handled with plain concrete, open caisson wall is connected using armored concrete afterwards；
(6) it is installed into the ladder of round-seal reservoir: according to subsequent maintenance needs, designing ladder, ladder is pacified using tendon-planted craft
On the inner wall of round-seal reservoir；
(7) seam treating seepage: using high polymer material to the back cover seam of round-seal reservoir, building enclosure open caisson side wall
Seam carries out treating seepage；
(8) sealing pressing plate in hole is installed: according to default push pipe doorway positions, by expansion bolt in the fixed sealing pressing plate in hole；
(9) the top sandwiched concrete board wall for presetting push pipe door opening is promoted: sandwiched concrete board wall being lifted, at default push pipe door opening position
Thin-walled plain concrete cavity is formed, reduces push pipe mechanical penetration and presets push pipe door opening resistance；
(10) push pipe jacking construction: after push pipe mechanical erection is in place, by hydraulic top thrust, default push pipe door opening portion is continuously penetrated
Normal jacking construction is carried out after the thin-walled plain concrete cavity of position；
The related works such as the connection of (11) well interior conduit, valve installation are implemented and are checked and accepted: after whole push pipe operations, hanging out top
Pipe is mechanical, starts the related works such as permanent round-seal reservoir interior conduit connection, valve installation and implements and check and accept；
(12) provisional protection is removed, round-seal reservoir top blind flange, inspection shaft installation and waterproof construction.
A kind of water rich strata presets the permanent round-seal reservoir of push pipe door opening, including round-seal reservoir, round-seal reservoir
Building enclosure be open caisson, it is default push pipe door opening at bottom in round-seal reservoir that the bottom of round-seal reservoir, which is back cover,
Thin-walled plain concrete cavity, insertion in thin-walled plain concrete cavity are provided in open caisson on the vertical axis of default push pipe door opening
There is sandwiched concrete board wall, top blind flange is provided at the top of open caisson, be provided with inspection shaft in top blind flange, on round-seal reservoir inner wall
Ladder is installed by tendon-planted craft, ladder is located at below inspection shaft.
Sealing pressing plate is fixed with by expansion bolt at the hole of the default push pipe door opening.
Push pipe machinery is provided in the round-seal reservoir, to being connected to push pipe, push-bench in the thrust direction of push pipe machinery
Tool pushes push pipe to promote towards default push pipe door opening.
The seam crossing of seam and open caisson side wall between the back cover and open caisson carries out seam infiltration by high polymer material
Stream process.
Be embedded with connector on the open caisson, open caisson upper end is connected with edge protection, edge protection by bolt with it is pre-buried
Connector connection.
Compared with the existing technology, technical effect of the invention is,
(1) technical concept is advanced, innovative for the first time to propose that push pipe door opening is same using thin-walled plain concrete cavity and work well construction
The theory that step design is implemented, had both overcome the constructional difficulties and security risk in water rich strata back pullout (BPO) hole, also saved corresponding
Capital investment also shortens the construction period of active well, and can do permanent work while providing subsurface safety working space
Make well use.
(2) sandwiched concrete board wall construction is firstly introduced in building enclosure, cooperation reinforced concrete open caisson collectively forms active well
Building enclosure uses, and can effectively play the mechanical property of material, guarantees the performance of active well function, while need to only apply by push pipe
The hydraulic thrust of work machinery can easily realize the unlatching of push pipe door opening, safe and efficient.
(3) leakage and potential seepage place are handled in advance using high polymer material, is effectively ensured subsequent as forever
The normal performance using function of long property inspection shaft.
(4) active well is subsequent uses as permanent inspection-pit, for region of FuShui jacking construction provide it is a set of for
The standardized designs and construction of the circular work well construction of reference, the repetition for avoiding active well and inspection-pit are built, and economy is suitable
With economizing on resources.
(5) goal orientation is strong, comprehensive cost performance is high.Maximum feature with conventional operation well building technology, the application is root
It is goal orientation according to active well functional requirement, the key for settleing one by one active well respectively as fixed installation inspection shaft process is asked
Topic, safe and economical to be applicable in, implementation phase, the set-up mode of dexterous design push pipe door opening reduce construction to week at the scene
The influence of surrounding environment.
No matter the present invention leads from the design and construction theory of circular work well construction, structural system stress, mode of construction, target
All have to, comprehensive utilization value etc. with existing active well technology apparent different, and there is safe and efficient, technology
It is advanced, can high efficiente callback recycling, green economy, ecology harmonious the advantages that, and be successfully applied to round-seal reservoir and permanent
Property inspection shaft build project, development and application prospect is considerable.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is the functional configuration figure of round-seal reservoir of the present invention.
Fig. 3 is the horizontal layout structural map of round-seal reservoir of the present invention.
Fig. 4 is the sectional view of round-seal reservoir of the present invention.
Fig. 5 is the structure chart of open caisson of the present invention and sandwiched concrete board wall.
Fig. 6 is the structure chart of top blind flange of the present invention.
Fig. 7 is the structure chart of sealing pressing plate in hole of the present invention.
Specific embodiment
A kind of construction method of the permanent round-seal reservoir of the default push pipe door opening of water rich strata, first completion circular work
The functional requirement of well designs；Then enclosed structure and provisional protection construction are successively carried out；Then carry out the soil in round-seal reservoir
Side's excavation, round-seal reservoir back cover；It is fit into ladder, seam treating seepage and hole sealing the pressing plate peace of round-seal reservoir
Dress；The hydraulic thrust for being then act through pipe jacking equipment penetrates the thin-walled plain concrete cavity for being promoted and being formed after sandwiched concrete board wall and opens door
Hole；In well after the completion of related operation, round-seal reservoir top blind flange, inspection shaft installation and waterproof construction, rich water can be completed
The construction of the permanent round-seal reservoir of the default push pipe door opening of layer.Specifically include following steps,
(1) the functional requirement design of round-seal reservoir, comprising:
(1) related data is collected, determines the processing side for meeting the planar dimension of job requirements, depth and active well back cover in well
Formula；
(2) absolute altitude and diameter of default push pipe door opening are determined according to the position of proposed pipeline, diameter, material and connection type etc.,
The quantity of default push pipe door opening is at least one；
(3) Structure Calculation and drawing of round-seal reservoir: being analyzed using beam element method and numerical simulation comparing calculation, is obtained most
Excellent round-seal reservoir supporting construction composition, then draws, completes the design work of round-seal reservoir functional requirement；
(2) specific step is as follows for the construction of the building enclosure open caisson of round-seal reservoir:
(1) preparation before open caisson construction: including place leveling, unwrapping wire, first floor earth excavation, compacting substrate, levelling unwrapping wire,
It tests line, sanding bed course, blade foot formwork, tie up reinforcing bar, well bore template, casting concrete, maintenance, demoulding；
(2) open caisson merogenesis sinking construction: including sinking to preparing, vertical transportation machinery and draining pump, observation, correction, merogenesis being arranged
Sink down into designed elevation, verification absolute altitude；
(3) thin-walled plain concrete cavity is arranged in merogenesis in the vertical axis of default push pipe door opening during pouring open caisson, thin
Sandwiched concrete board wall is inserted into wall plain concrete cavity；
(4) material of the building enclosure of round-seal reservoir uses armored concrete, or using steel member as round-seal reservoir
Permanent structure, and carry out anti-corrosion measure；
(3) edge protection is constructed: built-in fitting being arranged when round-seal reservoir building enclosure open caisson construction pours, edge protection is logical
Bolt is crossed to connect with built-in fitting；
(4) round-seal reservoir earth excavation: during open caisson construction, the position earthwork waterborne is directly excavated, the underwater portion soil body,
It is loosened the soil using giant, hydraulic grab is cut the earth or Pump breath countercirculate technique is cut the earth；
(5) it round-seal reservoir back cover: to meet subsequent construction needs, using concrete to round-seal reservoir sealing, first adopts
Stability against floating is handled with plain concrete, open caisson wall is connected using armored concrete afterwards；
(6) it is installed into the ladder of round-seal reservoir: according to subsequent maintenance needs, designing ladder, ladder installation uses bar planting work
Skill is mounted on the inner wall of round-seal reservoir；
(7) seam treating seepage: using high polymer material to the back cover seam of round-seal reservoir, building enclosure open caisson side wall
Seam carries out treating seepage；
(8) sealing pressing plate in hole is installed: according to default push pipe doorway positions, by expansion bolt in the fixed sealing pressing plate in hole；
(9) the top sandwiched concrete board wall for presetting push pipe door opening is promoted: sandwiched concrete board wall being lifted, at default push pipe door opening position
Thin-walled plain concrete cavity is formed, reduces push pipe mechanical penetration and presets push pipe door opening resistance；
(10) push pipe jacking construction: after push pipe mechanical erection is in place, by hydraulic top thrust, default push pipe door opening portion is continuously penetrated
Normal jacking construction is carried out after the thin-walled plain concrete cavity of position；
The related works such as the connection of (11) well interior conduit, valve installation are implemented and are checked and accepted: after whole push pipe operations, hanging out top
Pipe is mechanical, starts the related works such as permanent round-seal reservoir interior conduit connection, valve installation and implements and check and accept, makes it as forever
Long sex work well uses；
(12) provisional protection is removed, round-seal reservoir top blind flange, inspection shaft installation and waterproof construction.
Consider mechanics needs of two construction technologies simultaneously, by dig a well supporting and push pipe calculate two kinds of techniques of construction by
Power, structure function are synchronous to be considered, the supporting that avoids digging a well when construction in later period conflicts with what push pipe worked.
A kind of water rich strata presets the permanent round-seal reservoir of push pipe door opening, including round-seal reservoir 1, round-seal reservoir
1 building enclosure is open caisson 4, and the material of building enclosure is generally armored concrete, when use steel member is as round-seal reservoir
Permanent structure in use, anti-corrosion measure should be carried out in water rich strata.The bottom of round-seal reservoir 1 is back cover 2, circular work
It is default push pipe door opening 3 at bottom in well 1, the position for presetting push pipe door opening 3 is push pipe i.e. by the position of jacking, default
Thin-walled plain concrete cavity 11, insertion in thin-walled plain concrete cavity 11 are provided on the vertical axis of push pipe door opening 3 in open caisson 4
There is sandwiched concrete board wall 5, be provided with push pipe machinery 12 in round-seal reservoir 1, to being connected to push pipe in the thrust direction of push pipe machinery 12
13, push pipe machinery 12 pushes push pipe 13 to promote towards default push pipe door opening 3.
When push pipe jacking, sandwiched concrete board wall 5 is lifted, by hydraulic top thrust, presets the thin-walled element at 3 position of push pipe door opening
Concrete cavity 11 is pierced, and then by push pipe jacking, sandwiched concrete plate is inserted into the thin-walled plain concrete cavity 11 in open caisson
Wall 5, when working without push pipe, a part of sandwiched concrete board wall 5 as round-seal reservoir building enclosure, when needing push pipe,
Sandwiched concrete board wall 5 is lifted, under the jacking force effect of push pipe machinery, thin-walled plain concrete cavity 11 is easy to be pierced, side
Just the progress of push pipe work.Current active well is all coagulation concrete structure, and rhinestone head enabling hole is not easy, and enabling hole needs
Abolish concrete topping is secondary, be above the ground easy to appear during abolishing collapse, the dangers such as depression, sandwiched concrete plate
After wall 5 lifts, the thin-walled of thin-walled plain concrete cavity 11 is easy to be pierced, and can directly carry out the jacking work of push pipe, keep away
Exempt from secondary abolish.
The top of open caisson 4 is provided with top blind flange 14, is provided with inspection shaft 15 in top blind flange 14, in round-seal reservoir 1
Ladder 8 is equipped with by tendon-planted craft on wall, ladder 8 is located at 15 lower section of inspection shaft.After the completion of jacking construction, open caisson is covered into top
Portion's cover board 14, and inspection shaft is set, it uses, can be carried out inside active well by inspection shaft and ladder as permanent active well.
Sealing pressing plate 10 is fixed with by expansion bolt at the hole of default push pipe door opening 3, between back cover 2 and open caisson 4
The seam crossing of 4 side wall of seam and open caisson carries out the processing of seam seepage flow by high polymer material 9, especially in water rich strata, energy
It seeps water from hole and gap after enough preventing permanent active well long-time use.
Be embedded with connector in open caisson 4,4 upper end of open caisson is connected with edge protection 6, edge protection 6 by bolt with it is pre-buried
Connector connection, edge protection is removed after construction, and is covered in round-seal reservoir top blind flange.
The innovative combined enclosure frame mode using open caisson, default door opening position sandwiched concrete board wall of the invention carries out round
The advance support of active well is directed through by construction technology and structure design innovation using the hydraulic top thrust of pipe jacking equipment
Thin-walled plain concrete cavity realizes that the safely and fast molding of default door opening can reduce investment outlay and add to meet subsequent construction needs
Fast construction speed, the permanent round-seal reservoir structural system that the water rich strata that the present invention constructs presets push pipe door opening have function
Clear, safe and efficient, many advantages, such as design is dexterous, especially overcomes water rich strata push pipe and penetrates burst during the borehole wall
Sand security risk, the non-excavating construction for underground pipings such as the water conservancy of water rich strata, municipal administration, heating power, communications provide
A set of completely new active well design and construction technology, not only changes the construction method in conventional back pullout (BPO) hole and overcomes back pullout (BPO) hole
Risk, and innovative proposition and using the Synchronization Design of default door opening and round-seal reservoir, by pipe jacking equipment when use
It is hydraulic to penetrate thin-walled plain concrete cavity.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those skilled in the art,
Without depart from that overall concept of the invention, several changes and improvements can also be made, these also should be considered as of the invention
Protection scope.
Claims (6)
1. a kind of water rich strata preset push pipe door opening permanent round-seal reservoir construction method, it is characterised in that: including with
Lower step,
(1) the functional requirement design of round-seal reservoir, comprising:
(1) related data is collected, determines the processing side for meeting the planar dimension of job requirements, depth and active well back cover in well
Formula；
(2) absolute altitude and diameter of default push pipe door opening are determined according to the position of proposed pipeline, diameter, material and connection type etc.,
The quantity of default push pipe door opening is at least one；
(3) Structure Calculation and drawing of round-seal reservoir: being analyzed using beam element method and numerical simulation comparing calculation, is obtained most
Excellent round-seal reservoir supporting construction composition, then draws, completes the design work of round-seal reservoir functional requirement；
(2) specific step is as follows for the construction of the building enclosure open caisson of round-seal reservoir:
(1) preparation before open caisson construction: including place leveling, unwrapping wire, first floor earth excavation, compacting substrate, levelling unwrapping wire,
It tests line, sanding bed course, blade foot formwork, tie up reinforcing bar, well bore template, casting concrete, maintenance, demoulding；
(2) open caisson merogenesis sinking construction: including sinking to preparing, vertical transportation machinery and draining pump, observation, correction, merogenesis being arranged
Sink down into designed elevation, verification absolute altitude；
(3) thin-walled plain concrete cavity is arranged in merogenesis in the vertical axis of default push pipe door opening during pouring open caisson, thin
Sandwiched concrete board wall is inserted into wall plain concrete cavity；
(4) material of the building enclosure of round-seal reservoir uses armored concrete, or using steel member as round-seal reservoir
Permanent structure, and carry out anti-corrosion measure；
(3) edge protection is constructed: built-in fitting being arranged when round-seal reservoir building enclosure open caisson construction pours, edge protection is logical
Bolt is crossed to connect with built-in fitting；
(4) round-seal reservoir earth excavation: during open caisson construction, the position earthwork waterborne is directly excavated, the underwater portion soil body,
It is loosened the soil using giant, hydraulic grab is cut the earth or Pump breath countercirculate technique is cut the earth；
(5) it round-seal reservoir back cover: to meet subsequent construction needs, using concrete to round-seal reservoir sealing, first adopts
Stability against floating is handled with plain concrete, open caisson wall is connected using armored concrete afterwards；
(6) it is installed into the ladder of round-seal reservoir: according to subsequent maintenance needs, designing ladder, ladder is pacified using tendon-planted craft
On the inner wall of round-seal reservoir；
(7) seam treating seepage: using high polymer material to the back cover seam of round-seal reservoir, building enclosure open caisson side wall
Seam carries out treating seepage；
(8) sealing pressing plate in hole is installed: according to default push pipe doorway positions, by expansion bolt in the fixed sealing pressing plate in hole；
(9) the top sandwiched concrete board wall for presetting push pipe door opening is promoted: sandwiched concrete board wall being lifted, at default push pipe door opening position
Thin-walled plain concrete cavity is formed, reduces push pipe mechanical penetration and presets push pipe door opening resistance；
(10) push pipe jacking construction: after push pipe mechanical erection is in place, by hydraulic top thrust, default push pipe door opening portion is continuously penetrated
Normal jacking construction is carried out after the thin-walled plain concrete cavity of position；
The related works such as the connection of (11) well interior conduit, valve installation are implemented and are checked and accepted: after whole push pipe operations, hanging out top
Pipe is mechanical, starts the related works such as permanent round-seal reservoir interior conduit connection, valve installation and implements and check and accept；
(12) provisional protection is removed, round-seal reservoir top blind flange, inspection shaft installation and waterproof construction.
2. the permanent round-seal reservoir that a kind of water rich strata presets push pipe door opening, it is characterised in that: including round-seal reservoir
(1), the building enclosure of round-seal reservoir (1) is open caisson (4), and the bottom of round-seal reservoir (1) is back cover (2), round-seal reservoir
(1) it is default push pipe door opening (3) at bottom in, is provided in open caisson (4) on the vertical axis of default push pipe door opening (3)
Thin-walled plain concrete cavity (11), thin-walled plain concrete cavity (11) are interior inserted with sandwiched concrete board wall (5), the top of open caisson (4)
It is provided with top blind flange (14), is provided in top blind flange (14) inspection shaft (15), pass through bar planting on round-seal reservoir (1) inner wall
Process Installation has ladder (8), and ladder (8) is located at below inspection shaft (15).
3. the permanent round-seal reservoir that water rich strata as claimed in claim 2 presets push pipe door opening, it is characterised in that: described
Sealing pressing plate (10) are fixed with by expansion bolt at the hole of default push pipe door opening (3).
4. the permanent round-seal reservoir that water rich strata as claimed in claim 2 presets push pipe door opening, it is characterised in that: described
It is provided with that push pipe is mechanical (12) in round-seal reservoir (1), to being connected to push pipe (13), push pipe in the thrust direction of push pipe machinery (12)
Mechanical (12) push push pipe (13) to promote towards default push pipe door opening (3).
5. the permanent round-seal reservoir that water rich strata as claimed in claim 2 presets push pipe door opening, it is characterised in that: described
The seam crossing of seam and open caisson (4) side wall between back cover (2) and open caisson (4) carries out seam infiltration by high polymer material (9)
Stream process.
6. the permanent round-seal reservoir that water rich strata as claimed in claim 2 presets push pipe door opening, it is characterised in that: described
Connector is embedded on open caisson (4), open caisson (4) upper end is connected with edge protection (6), edge protection (6) by bolt with it is pre-buried
Connector connection.
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| CN201910731042.5A CN110485468B (en) | 2019-08-08 | 2019-08-08 | Permanent circular working well with water-rich stratum preset jacking pipe door opening and construction method thereof |
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| CN201910731042.5A CN110485468B (en) | 2019-08-08 | 2019-08-08 | Permanent circular working well with water-rich stratum preset jacking pipe door opening and construction method thereof |
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