CN110219359A - A kind of Submersed type inspection well and its construction method - Google Patents

A kind of Submersed type inspection well and its construction method Download PDF

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Publication number
CN110219359A
CN110219359A CN201910640067.4A CN201910640067A CN110219359A CN 110219359 A CN110219359 A CN 110219359A CN 201910640067 A CN201910640067 A CN 201910640067A CN 110219359 A CN110219359 A CN 110219359A
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CN
China
Prior art keywords
well room
well
section
lower section
pit shaft
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910640067.4A
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Chinese (zh)
Inventor
汪滨
刘新星
汤桂腾
汤佳奇
刘玉莎
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Hunan Bosch Environmental Protection Technology Co Ltd
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Hunan Bosch Environmental Protection Technology Co Ltd
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Application filed by Hunan Bosch Environmental Protection Technology Co Ltd filed Critical Hunan Bosch Environmental Protection Technology Co Ltd
Priority to CN201910640067.4A priority Critical patent/CN110219359A/en
Publication of CN110219359A publication Critical patent/CN110219359A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/02Manhole shafts or other inspection chambers; Snow-filling openings; accessories
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/02Manhole shafts or other inspection chambers; Snow-filling openings; accessories
    • E03F5/021Connection of sewer pipes to manhole shaft
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/02Manhole shafts or other inspection chambers; Snow-filling openings; accessories
    • E03F5/027The bottom made of prefabricated segments
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/02Manhole shafts or other inspection chambers; Snow-filling openings; accessories
    • E03F2005/028Sealing joints between manhole segments

Abstract

The present invention discloses Submersed type inspection well and its construction method, which includes the pit shaft adjusting section of bearing beam, setting thereunder;Well room comprising well room upper section and bottom are provided with the well room lower section of the chute of communicated drainage pipeline;Bottom plate is located at below chute;Cover board adjusts below section positioned at pit shaft and connects pit shaft adjusting section and well room.The construction method include the line setting of inspection shaft, road deck saw kerf and abolish, clear up road deck plate slag, leveling base, well room installation and sink, bottom plate and chute construction, cover board and pit shaft adjust section installation, bearing beam construction, well lid installation and road surface and restore.The present invention is suitable for the inspection well construction on the drainage pipeline straight line pipeline section of horizontal directional drill construction, bottom plate passes through groove and well room build-in, without drawing digging operation under the borehole wall, and good water-proof effect small to basic ground disturbance, be conducive to construct in the stratum such as mud and mucky silt, convenient do not excavate in business district carries out pipeline engineering construction.

Description

A kind of Submersed type inspection well and its construction method
Technical field
The present invention relates to inspection shafts, and in particular to a kind of Submersed type inspection well and its construction method.
Background technique
Inspection shaft is that the power supply for Urban Underground infrastructure, plumbing, blowdown, communication, cable are embedded etc. easy to maintenance And be arranged.It is generally located at pipeline intersection, turning, caliber or gradient change and on straight line pipeline section every a spacing From place, in order to inspect periodically auxiliary construction.
Currently, generalling use the mode (open cut point of open cut after horizontal directional drill (non-excavation laying) construction drainage pipeline Slope is excavated and Larsen steel sheet pile supporting excavation) foundation pit that excavates inspection shaft, it can directly be built in foundation pit after excavation brick Inspection shaft or perform cast-in-place/prefabricated reinforced concrete inspection well, conventional construction method feature is as follows:
Slope excavate, be only applicable to the soil properties such as buried depth of pipeline shallower (generally less than 3 meters), cohesive soil preferably, the soil body from The steady strong stratum of ability, and the stratum has the case where excavated surface.Although its low cost and technically simple, the easy control of quality System, but pipeline is under street, open cut needs biggish excavation face, long construction period, and traffic is seriously affected after open cut, And it is not suitable for apart from the closer pipeline in street two sides house.
Larsen steel sheet pile supporting excavation, it is suitable for buried depth of pipeline relatively deep (being generally higher than equal to 3 meters), Muddy Bottoms silty are glutinous The geology such as soil, mud are poor, stratum of the periphery without important structures (building) and overhead clear.Although the supporting excavation Method geology strong applicability, and excavation face is small, high safety and reliability, but cost is high, pile driving equipment weight is big (50~60 tons), opens Digging process township road easy to damage, and vibrate that big, noise is big, house easy to damage when closer from house when piling work, be not suitable for There is the case where biggish boulder or closely knit decomposed rock, sandy gravel in the barriers such as overhead live wire, stratum.
Summary of the invention
Based on above-mentioned defect existing in the prior art, the present invention provides a kind of Submersed type inspection well, which includes Pit shaft and well room are existing drainage pipeline in well room N-shaped hole, and production has pad between the bottom end and drainage pipeline or chute of well room Layer and bottom plate, bottom plate top are provided with the chute of connection inspection shaft internal drainage pipeline intake-outlet.
Specifically, Submersed type inspection well provided by the present invention comprising:
Bearing beam;
Pit shaft adjusts section, is arranged below bearing beam, and the pit shaft adjusts section and is spliced by least two sections of pit shaft cylinders;
Well room comprising well room upper section and well room lower section, well room lower section bottom are equipped with groove, are provided in the groove Bottom plate, bottom plate top are equipped with the chute of communicated drainage pipeline intake-outlet;
Well room lower section bottom is provided with N-shaped hole, and the width in the N-shaped hole is that drainage pipeline outer diameter adds 60~80 ㎜, n The top of type hole is higher than 30~40 ㎜ at the top of drainage pipeline;
Cover board is located at pit shaft and adjusts below section, connects the pit shaft and adjusts section and the well room;
The well chamber diameter is greater than the diameter that pit shaft adjusts section;
The pit shaft cylinder and well room are prefabricated reinforced concrete pipe.
Specifically, bottom plate is monolithic reinforced concrete structure, the load come to bear well room transmitting, and load is passed The bed course and the soil body being handed under it.
Chute is the secondary casting concrete component in scene, and there is the most of well room lower section of closure to reserve N-shaped hole and drainpipe The effect in gap and water conservancy diversion sewage between road.
Chute and groove are provided with conducive to an entirety is formed between well room and bottom plate and drainage pipeline.
Submersed type inspection well of the invention adjusts section using height-adjustable pit shaft, at least by the splicing of two sections of cylinders and At, be conducive to according to inspection shaft buried depth adjust use, and pit shaft adjust section diameter matches in 700 national standard well lid of Φ. The adjusting that section is adjusted by pit shaft, makes cover board be in road surface 0.8m hereinafter, the influence for significantly reducing vehicular load to cover board.
Meanwhile the use of pit shaft adjusting section can reduce the use of well room, save reinforcing bar and concrete, reduce project cost.
Specifically, drainage pipeline is horizontal directional drill construction drainage pipeline, non-excavation laying high-density polyethylene is used Alkene drainpipe has the function of collection, water conservancy diversion, sewage effluent or rainwater.
Further, the bearing beam is hollow rounding frustum structure.
Specifically, the bearing beam is cast-in-place concrete structure, thickness is not less than 200 ㎜ (specific visual Submersed type inspection well Height determine).
Bearing beam can bear well lid and the next load of top road surface transmitting and load is equably diffused to roadbed and pit shaft, prevent Sedimentation height difference is only generated between inspection shaft well lid and surrounding road surface.And bearing beam uses the pattern of hollow rounding frustum, force structure More scientific, due to vehicular load and the effect of self weight, bearing beam has the tendency that moving downward.Based on active force and reaction force Principle, the soil body or pavement structure of under bearing beam surrounding rounding frustum and side will generate uplift pressure to bearing beam, and bearing beam is prevented to sink.
Further, the upper port of the well room upper section is flat mouth, and lower port is bellmouth;
The upper port of the well room lower section is socket, and lower port is blade foot;
Rubber water-proof circle is provided between the bellmouth and socket.
Rubber water-proof circle is made of butadiene-styrene rubber, plays joint seal, is mounted on upper and lower two sections of well rooms or pit shaft Between junction portion in seam, while filled with a small amount of silicone oil in the cavity of rubber water-proof circle, upper and lower section tongue and groove pipe is in docking operation In, the chamber filled with silicone oil can slide, and be easily installed, and rubber bodies is made to be not easy to overturn.
Specifically, well room upper section and well room lower section are the tongue-and-groove type concrete reinforced pipe of factory's concentration pre-casting, by length Produce two models.
Well room upper section and well room lower section constitute well room, provide operating space in well for tubular service personnel.
Further, the pit shaft and well room inner wall are provided with goes into the well the ladder of inspection for inspection personnel.
Specifically, ladder is cast iron or plastic-steel material.
The construction method of Submersed type inspection well provided by the present invention with above structure, includes the following steps:
The line setting of step 1) inspection shaft: by the axis of the drainage pipeline and elevation pilot measurement to road surface, according to construction Drawing releases the center to the Submersed type inspection well of constructing on the axis, and releases and indulge in the center Lateral cross hairs and outer contour;
The rectangle road deck saw kerf greater than the Submersed type inspection well outer diameter is popped up on road surface according to the outer contour Line;
It step 2) road deck saw kerf and abolishes;
Step 3) clears up road deck plate slag, leveling base;
The installation of step 4) well room and sinking;
Step 5) bottom plate and chute construction;
Step 6) cover board and pit shaft adjust section installation;
The construction of step 7) bearing beam;
The installation of step 8) well lid and road surface are restored.
The present invention makes inspection shaft using the construction method of Submersed type, the drainage pipeline straight line for horizontal directional drill construction Two logical inspection shafts on pipeline section are conducive to the inspection of construction well in the stratum such as mud and mucky silt and develop new-type prefabricated inspection The structure of well is looked into, the factorial production is convenient for, convenient do not excavate in business district carries out pipeline engineering construction.Inspection shaft bottom plate passes through recessed Slot and well room build-in, it is small to basic ground disturbance, globality is strong, good water-proof effect without drawing digging operation under the borehole wall, be conducive to work Progress, quality, cost control and the safety management of journey.
Further, step 2) includes: from saw kerf from the rectangle road deck saw kerf line, and the saw kerf depth is not less than institute State the 1/3 of road deck plate thickness and no less than 6 ㎜.
Further, it is crushed since the center of the rectangle road deck saw kerf line is around using quartering hammer, and described Quartering hammer installs soft protecting net additional.
Being crushed since center is around can be to avoid generation local damage from road deck saw kerf, and soft protecting net installs additional After quartering hammer, it can be damaged caused by traffic to avoid concrete disintegrating slag is popped up in shattering process, especially in traffic When more or excessively close therewith road work, the situation that can reduce or avoid rubble to splash.
Further, the step 3) includes: using excavator and dumper that the removing of road deck plate slag is clean and smooth Base.According to the aforementioned vertically and horizontally cross hairs being placed on road surface, it is arranged on the road deck of the embedding position surrounding of inspection shaft and checks Underground sinks control point.
Further, the step 4) includes:
41) altitude scale is indicated on the outer wall of the well room upper section and well room lower section, and in the well room upper section and well The outer wall and inner wall subscript of room the lower section vertically and horizontally axis of symmetry, wherein longitudinal asymmetric axis is the center line of the drainage pipeline; Hanging wire fall device is set at the highest point of the vertically and horizontally axis of symmetry, to detect the verticality of well room at any time;
42) hand excavation, and the well room upper section and well room lower section segmentation merogenesis are sunk:
When hand excavation, the intermediate soil body is first taken to form the high pan bottom shape of intermediate low surrounding, then symmetrically and evenly cut the earth around;
The well room lower section and well room upper section are successively hung in the base to after flattening, so that the well room lower section is in length and breadth It is corresponding with the vertically and horizontally cross hairs to the axis of symmetry;
In the sinking watching of the well room upper section and well room lower section, the altitude scale is observed to grasp under well room at any time Heavy elevation;The misalignment of axe for observing the vertically and horizontally axis of symmetry on well room outer wall simultaneously, further according to described on well room inner wall Vertically and horizontally the axis of symmetry and hanging wire pendant check the verticality of well room lower section and well room upper section, and rectify a deviation;
When the upper end of the well room lower section sinks down into 300~500 ㎜ of the base or more, stop cutting the earth, and in institute The upper end installation rubber water-proof circle for stating well room lower section, then places the well room upper section, the axis of the well room upper section according to buried depth Line should be overlapped with the axis of well room lower section;
When the well room lower section blade foot tyre tread sinks to the top of the drainage pipeline, stops cutting the earth, examine at this time The deviation of reserved N-shaped hole central axis and drainage pipeline axis is looked into whether within the scope of tolerance;
If continuing to take native sinking downwards within the scope of tolerance, until the well room sinks down into design altitude or more When 100~150 ㎜, stopping takes native sinking, and observes well room sinking speed;
Ladder is installed using chemical method bar planting: first being punched on the inner wall of the well room upper section and well room lower section, then by hole Purging is clean, and high-strength anchoring adhesive is then injected into the hole, ladder is inserted into the hole.
Such as by the way of pre-buried, ladder is installed together with reinforcing bar in well room manufacturing process, then will affect steel form Installation and removal.High pressure water flushing hole flushing hole is generally used in conventional bar planting, and water will lead to hole internal water accumulation and humidity, need longer Drying time.And it uses compressed air to carry out hole purging, the bar planting time can be shortened and improves bar planting bond effect.
Specifically, first taking the intermediate soil body to form the high small pan bottom shape of intermediate low surrounding, then around when artificial shoveling is sunk Symmetrically and evenly cut the earth, can homogeneous vertical sink, must not have excessive inclination, perpendicularity deviation should not exceed 1%H and not answer Greater than 100 ㎜ (H is submergence depth).
For level of ground water, high, piping or the hydrological geological conditions for having underground bearing water layer, can be arranged on the outside of inspection shaft The method of pipe well lowering of watertable excavates safety to ensure.The specification and quantity of pipe well need to be according to geology exploration report and specifications It is determined by calculation.
Specifically, correction should follow the principle of " diligent observation, diligent correction, small correction ", reinforce taking soil in the high side of blade foot, Low side is dug less or does not cut the earth, and even laminating takes soil again after normotopia.Correction should gradually rectify a deviation with digging with correction, and never one Secondary correction is excessive.
Specifically, at the top of well room lower section with the contact surface brushing lubricant of rubber water-proof circle, so that rubber water-proof circle is suitable It is sharp in place.
Specifically, should ensure that sinking in 8 hours no more than 10 ㎜ is heavy eventually " brake " success when observation sinking speed. After " brake " success, ladder can be installed according to predetermined position on well room inner wall.
Specifically, ladder transverse pitch is 300 ㎜, vertical center is away from for 360 ㎜.
Further, step 5) includes:
The extra soil of well room lower section bottom is removed, and is no less than at 150 ㎜ apart from the well room lower section inner wall The sawed-off drainage pipeline takes out sawed-off extra drainage pipeline, and the well room lower section bottom after clearing up soil performs coagulation Soil padding, the concrete cushion are non-reinforced plain concrete cushion layer;Reach the 75% of design strength to the concrete cushion Baseplate reinforcing bar is bound afterwards and pours underplate concrete, after the underplate concrete reaches design strength, to the N-shaped hole and row Gap between waterpipe carries out water-proofing treatment, then installs chute template and pour chute concrete.
Specifically, water-proofing treatment uses Bituminous hemp fiber filleting, prevented on the inside of well room using the 1:2 cement for mixing 5% accelerator outside Water sand slurry or polyurethane blending cement mortar sealing.
The present invention improves on the basis of existing 1:2 cement waterproofing mortar or polyurethane blending cement mortar, and additional 5% Accelerator, be conducive to shorten mortar firm time, achieve the effect that quick sealing, and can reach in conjunction with Bituminous hemp fiber filleting To the effect of dual waterproof.
Further, step 6) includes:
Cover board is installed at the top of the well room upper section, then the pit shaft is installed on the cover board and adjusts section, the well Cylinder adjusts section and is installed on the ladder using the chemical method bar planting before hanging;
The pit shaft adjusts the vertical central axis of section and is overlapped with the vertical axis for reserving in the circular hole on the cover board;
When installing the cover board and the pit shaft adjusts section, wash and dry the well room upper section top and cover board it Between and the cover board and pit shaft adjust the seam crossing between the bottom of section, it is then viscous using waterproofing unction in the seam crossing It connects, to prevent percolating water.
Further, the step 7) includes:
The roadbed earthwork around pit shaft adjusting section or other fillers are backfilled, backfilling of earthwork should be by " layering, symmetrical, equilibrium " Method carries out, and back-filling in layers simultaneously uses small machine compaction in layers, is backfilled to bearing beam bottom, that is, is backfilled to pit shaft and adjusts at the top of section Afterwards, then the production of bearing beam is carried out.
Further, the step 8) includes:
The construction that well lid completes Submersed type inspection well is installed on bearing beam, finally carries out the recovery construction on road surface.
Compared to the prior art, the present invention has the following technical effect that
(1) using prefabricated reinforced concrete pipe as supporting and inspection shaft structural body, that is, solving excavation needs supporting to ask Topic, and the structure construction of inspection shaft is realized, it kills two birds with one stone, construction safety, factory's concentration pre-casting are quality controllable, batch production is dropped Low cost;
(2) construction of bottom plates is not necessarily to draw dig a well wall lower part and the outside soil body, advantageously ensures that the stability and verticality of well room, More superiority is used in the stratum such as mud, Muddy Bottoms silty clay, silty soil;
(3) groove is reserved on the inside of well room lower section, bottom plate is embedded in the groove, forms well room and bottom plate and drainage pipeline One entirety facilitates work-up the rigidity and stability of well;
(4) because horizontal directional drill construction drainage pipeline be first in provided underground drainage pipeline, after perform inspection shaft, thus well Room lower section reserved opening uses N-shaped hole, facilitates work-up the docking and sealing of well well room and drainage pipeline;
Relative to reserved round hole, the present invention can greatly reduce the risk of interface dislocation, percolating water;Because if reserved circle Shape hole, well room lower section bottom need when sinking to drainage pipeline tube top by drainage pipeline sawed-off, the drainage pipeline along well room outer wall It will be mated on the outside of well room, wider and drainage pipeline is stitched at docking to form entirety with inspection shaft, once drainage pipeline Differential settlement is generated between inspection shaft, then will lead to seam mismatch and leak;
(5) armored concrete bearing beam is set under well lid, and the vehicular load that well lid is born can be evenly distributed by bearing beam It has given on inspection shaft surrounding formation and manhole shaft, has avoided generating differential settlement height difference between well lid and surrounding road surface, have Prevent to effect the generation of " jumping vehicle ", guarantee driving safety.
Detailed description of the invention
It, below will be to embodiment or the prior art in order to illustrate more clearly of embodiment or technical solution in the prior art Attached drawing needed in description is briefly described, it should be apparent that, the accompanying drawings in the following description is only some of invention Embodiment for those of ordinary skill in the art without creative efforts, can also be attached according to these Figure obtains other attached drawings.
Fig. 1 is the structural schematic diagram under a visual angle of Submersed type inspection well of the present invention;
Fig. 2 is the structural schematic diagram at another visual angle of Submersed type inspection well of the present invention;
Fig. 3 is the structural schematic diagram of the well room lower section of Submersed type inspection well of the present invention;
Fig. 4 is the schematic top plan view of the well room lower section of Submersed type inspection well of the present invention;
Fig. 5 be Fig. 4 along A-A to schematic cross-sectional view.
Appended drawing reference meaning are as follows:
The road surface 1-;2- well lid;3- bearing beam;4- pit shaft adjusts section;5- cover board;6- well room upper section;7- rubber water-proof circle;8- well Room lower section;9- chute;10- bottom plate;11- drainage pipeline;12- ladder;011- vertical bar;012- hoop;13-n type hole;14- groove.
Specific embodiment
The explanation of following embodiment is referred to the additional illustration, the particular implementation that can be used to implement to illustrate the present invention Example.The direction term that the present invention is previously mentioned, such as [on], [under], [preceding], [rear], [left side], [right side], [interior], [outer], [side] Deng being only the direction with reference to additional illustration.Therefore, the direction term used be to illustrate and understand the present invention, rather than to The limitation present invention.The similar unit of structure is with being given the same reference numerals in the figure.
It is illustrated in conjunction with Fig. 1 and Fig. 2, Submersed type inspection well of the invention comprising:
Bearing beam 3 is in hollow rounding frustum structure, and the bearing beam 3 is cast-in-place concrete structure, and thickness is not less than 200 ㎜;
Pit shaft adjusts section 4, is arranged below bearing beam 3, the pit shaft adjust section 4 by least two sections of pit shaft cylinders splicings and At;
Well room comprising well room upper section 6 and well room lower section 8;The upper port of the well room upper section 6 is flat mouth, and lower port is Bellmouth;The upper port of the well room lower section 8 is socket, and lower port is blade foot;It is provided between bellmouth and socket by butadiene-styrene rubber Manufactured rubber water-proof circle is mounted between two sections well room junction portion in seam, while rubber with playing joint seal Filled with a small amount of silicone oil in the cavity of glue sealing collar, upper-lower section tongue and groove pipe is in docking operation, and the chamber filled with silicone oil can slide, just In installation, rubber bodies is made to be not easy to overturn;
Cover board 5 is located at pit shaft and adjusts 4 lower section of section, connects the pit shaft and adjust section 4 and the well room;
The well chamber diameter is greater than the diameter that pit shaft adjusts section 4;
The pit shaft cylinder and well room are prefabricated reinforced concrete pipe, and as shown in Fig. 1, hoop 012 is arranged in vertical bar 011 And casting concrete.
As shown in Fig. 3-5, the well room lower section 8 is equipped with N-shaped hole 13, is higher than drainage pipeline 11 at the top of the N-shaped hole 13 and pushes up 30~40 ㎜ of portion, width are that 11 outer diameter of drainage pipeline adds 60~80 ㎜;8 bottom of well room lower section is additionally provided with groove 14, this is recessed It is provided with bottom plate 10 in slot 14, the chute 9 of 11 intake-outlet of communicated drainage pipeline is equipped with above bottom plate 10, which is scene Secondary casting concrete component has the gap blocked between most of well room lower section reserved N-shaped hole 13 and drainage pipeline 11 And the effect of water conservancy diversion sewage, the drainage pipeline 11 are high density polyethylene drainage pipe.
The construction method of Submersed type inspection well with above structure, specific steps are as follows:
The line setting of step 1) inspection shaft:
By the axis of the drainage pipeline 11 and elevation pilot measurement to road surface 1, released on the axis according to construction drawing Vertically and horizontally cross hairs and outer profile are released to the center for the Submersed type inspection well of constructing, and in the center Line;
The rectangle road deck saw kerf greater than the Submersed type inspection well outer diameter is popped up on road surface according to the outer contour Line;
It step 2) road deck saw kerf and abolishes:
From saw kerf from the rectangle road deck saw kerf line, the saw kerf depth not less than the road deck plate thickness 1/3 and No less than 6 ㎜;
Further, it is crushed since the center of the rectangle road deck saw kerf line is around using quartering hammer, and described Quartering hammer installs soft protecting net additional;
Step 3) clears up road deck plate slag, leveling base:
Road deck plate slag is removed into clean and flattening foot layer using excavator and dumper;
According to the aforementioned vertically and horizontally cross hairs being placed on road surface, inspection is set on the road deck of the embedding position surrounding of inspection shaft Look into the heavy control point in underground;
The installation of step 4) well room and sinking, comprising:
41) altitude scale is indicated on the outer wall of the well room upper section 6 and well room lower section 8, and in 6 He of well room upper section The outer wall and inner wall subscript of well room the lower section 8 vertically and horizontally axis of symmetry, wherein longitudinal asymmetric axis is in the drainage pipeline 11 Heart line;Hanging wire fall device is set at the highest point of the vertically and horizontally axis of symmetry, to detect the verticality of well room at any time;
42) hand excavation, and the well room upper section and well room lower section segmentation merogenesis are sunk:
First hand excavation takes the intermediate soil body to form the high pan bottom shape of intermediate low surrounding, then symmetrically and evenly cuts the earth around, makes Well room energy homogeneous vertical sinks, and must not have an excessive inclination, and perpendicularity deviation should not exceed 1%H and should not exceed 100 ㎜ (H be Submergence depth);
In base after successively hanging the well room lower section 8 and well room upper section 6 to leveling again, so that the well room lower section 8 The vertically and horizontally axis of symmetry it is corresponding with the vertically and horizontally cross hairs;
In the sinking watching of the well room upper section 6 and well room lower section 8, the altitude scale is observed to grasp well room at any time The elevation of sinking;The misalignment of axe for observing the vertically and horizontally symmetry axis on well room outer wall simultaneously, further according to described on well room inner wall Vertically and horizontally the axis of symmetry and hanging wire pendant check the verticality of well room lower section and well room upper section, and rectify a deviation;
It is emphasised that: correction should follow the principle of " diligent observation, diligent correction, small correction ", reinforce taking in the high side of blade foot Soil, low side are dug less or do not cut the earth, and even laminating takes soil again after normotopia.Correction should gradually rectify a deviation, never with digging with correction Primary correction is excessive;High, piping or the hydrological geological conditions for having underground bearing water layer for level of ground water, can be on the outside of inspection shaft The method of pipe well lowering of watertable is set to ensure and excavate safety;The specification and quantity of pipe well need to according to geology exploration report and Specification is determined by calculation;
When the upper end of the well room lower section 8 sinks down into 300~500 ㎜ of the base or more, stop cutting the earth, and in institute The rubber water-proof circle 7 is installed in the upper end for stating well room lower section 8, applies in the upper end of well room lower section 8 and the contact surface of rubber water-proof circle 7 Brush lubricant, so that rubber water-proof circle is smoothly in place;Then the well room upper section 6 is placed according to buried depth, the well room upper section 6 Axis should be overlapped with the axis of well room lower section 8;
When the 8 blade foot tyre tread of well room lower section sinks to the top of the drainage pipeline 11, stop cutting the earth, at this time Check the deviation of reserved N-shaped hole central axis and drainage pipeline axis whether within the scope of tolerance;
If continuing to take native sinking downwards within the scope of tolerance, until the well room sinks down into design altitude or more When 100~150 ㎜, stopping takes native sinking, and observes well room sinking speed, should ensure that sink in 8 hours and is no more than 10 ㎜ Heavy " brake " success eventually;
Finally, installing ladder 12 using chemical method bar planting again: first on the inner wall of the well room upper section 6 and well room lower section 8 Punching, then hole is purged completely, high-strength anchoring adhesive is then injected in the hole, and ladder 12 is inserted into the hole;
Step 5) bottom plate and chute construction:
The extra soil of 8 bottom of well room lower section is removed, and is being no less than 150 ㎜ apart from 8 inner wall of well room lower section Locate the sawed-off drainage pipeline 11, sawed-off extra drainage pipeline is taken out, 8 bottom of well room lower section after clearing up soil is done mixed Solidifying soil padding, after the concrete cushion reach design strength 75% after bind baseplate reinforcing bar and pour underplate concrete, to After the underplate concrete reaches design strength, water-proofing treatment is carried out to the gap between the N-shaped hole and drainage pipeline 11, is prevented Water process uses Bituminous hemp fiber filleting, the 1:2 cement waterproofing mortar for mixing 5% accelerator outside is used on the inside of well room or using polyurethane Admix cement mortar sealing;
After the completion of water-proofing treatment, then installs chute template and pour chute concrete;
Step 6) cover board and pit shaft adjust section installation:
The cover board 5 is installed at the top of the well room upper section 6, then the pit shaft is installed on the cover board 5 and adjusts section 4, the pit shaft adjusts section 4 and is installed on the ladder 12 using the chemical method bar planting before hanging;
The pit shaft adjusts the vertical central axis of section 4 and is overlapped with the vertical axis for reserving in the circular hole on the cover board 5;
When installing the cover board 5 with pit shaft adjusting section 4, top and the lid of the well room upper section 6 are washed and dried Seam crossing between plate 5 and between the cover board 5 and the bottom of pit shaft adjusting section 4, then uses waterproof in the seam crossing Ointment bonding, to prevent percolating water;
The construction of step 7) bearing beam:
The roadbed earthwork around pit shaft adjusting section 4 or other fillers are backfilled, backfilling of earthwork should be by " layering, symmetrical, equilibrium " Method carry out, back-filling in layers simultaneously use small machine compaction in layers, be backfilled to 3 bottom of bearing beam, namely be backfilled to pit shaft adjusting Behind 4 top of section, reproduces pouring concrete and make bearing beam 3;
The installation of step 8) well lid and road surface are restored:
The construction that well lid 2 completes Submersed type inspection well is installed on bearing beam 3, finally carries out the recovery construction on road surface 1.
Aforementioned ladder 12 its transverse pitch referred to is 300 ㎜, vertical center is away from for 360 ㎜.
The present invention uses the embedding Submersed type inspection well of above-mentioned construction method, and the drainage pipeline for horizontal directional drill construction is straight In spool section, is conducive to the inspection of construction well in the stratum such as mud, mucky silt, Muddy Bottoms silty clay, silty soil and opens The structure for sending out precast inspection well new-type, is convenient for the factorial production, and convenient do not excavate in business district carries out pipeline engineering construction.
Section is adjusted using height-adjustable pit shaft when constructing embedding, cover board can be made to be in road surface 0.8m hereinafter, having Influence of the vehicular load to cover board is reduced to effect, and reduces the use of well room, saves reinforcing bar and concrete, engineering is reduced and makes Valence.
The bottom plate of inspection shaft is small to basic ground disturbance, whole without drawing digging operation under the borehole wall by groove and well room build-in Body is strong, good water-proof effect, is conducive to progress, quality, cost control and the safety management of engineering.
Because horizontal directional drill construction drainage pipeline be first in provided underground drainage pipeline, after perform inspection shaft.Thus well room Lower section reserved opening uses N-shaped hole, facilitates work-up the docking and sealing of well well room and drainage pipeline;Relative to reserved round hole, The present invention can greatly reduce the risk of interface dislocation, percolating water;Because well room lower section bottom is being sunk to if reserved round hole Need drainage pipeline is sawed-off along well room outer wall when drainage pipeline tube top, drainage pipeline will be mated on the outside of well room, docking Wider and drainage pipeline is stitched at place to form entirety with inspection shaft, once uneven sink is generated between drainage pipeline and inspection shaft Drop, then will lead to seam mismatch and leak.
Armored concrete bearing beam is set under well lid, and the vehicular load that well lid is born can be evenly distributed to by bearing beam In inspection shaft surrounding formation and manhole shaft, avoid generating differential settlement height difference between well lid and surrounding road surface, effectively Prevent the generation of " jumping vehicle ", guarantee driving safety.
To sum up, although the present invention has been disclosed above in the preferred embodiment, but above preferred embodiment is not to limit this Invention, those skilled in the art, without departing from the spirit and scope of the present invention, can make it is various change and retouch, Therefore protection scope of the present invention subjects to the scope of the claims.

Claims (10)

1. Submersed type inspection well characterized by comprising
Bearing beam;
Pit shaft adjusts section, is arranged below bearing beam, and the pit shaft adjusts section and is spliced by least two sections of pit shaft cylinders;
Well room comprising well room upper section and well room lower section, well room lower section bottom are equipped with groove, are provided with bottom in the groove Plate, bottom plate top are equipped with the chute of communicated drainage pipeline intake-outlet;
Well room lower section bottom is provided with N-shaped hole, and the width in the N-shaped hole is that drainage pipeline outer diameter adds 60~80 ㎜, N-shaped hole Top be higher than drainage pipeline at the top of 30~40 ㎜;
Cover board is located at pit shaft and adjusts below section, connects the pit shaft and adjusts section and the well room;
The well chamber diameter is greater than the diameter that pit shaft adjusts section;
The pit shaft cylinder and well room are prefabricated reinforced concrete pipe.
2. Submersed type inspection well according to claim 1, which is characterized in that the bearing beam is hollow rounding frustum structure.
3. Submersed type inspection well according to claim 1, which is characterized in that
The upper port of the well room upper section is flat mouth, and lower port is bellmouth;
The upper port of the well room lower section is socket, and lower port is blade foot;
Rubber water-proof circle is provided between the bellmouth and socket.
4. Submersed type inspection well according to claim 3, which is characterized in that the pit shaft and well room inner wall are provided with for inspection The personnel of looking into go into the well the ladder of inspection.
5. a kind of construction method of the Submersed type inspection well as described in any one of claims 1 to 4, which is characterized in that including such as Lower step:
The line setting of step 1) inspection shaft: by the axis of the drainage pipeline and elevation pilot measurement to road surface, according to construction drawing The center to the Submersed type inspection well of constructing is released on the axis, and is released vertically and horizontally in the center Cross hairs and outer contour;
The rectangle road deck saw kerf line greater than the Submersed type inspection well outer diameter is popped up on road surface according to the outer contour;
It step 2) road deck saw kerf and abolishes;
Step 3) clears up road deck plate slag, leveling base;
The installation of step 4) well room and sinking;
Step 5) bottom plate and chute construction;
Step 6) cover board and pit shaft adjust section installation;
The construction of step 7) bearing beam;
The installation of step 8) well lid and road surface are restored.
6. construction method according to claim 5, which is characterized in that step 2) includes: from the rectangle road deck saw kerf Saw kerf at line, the saw kerf depth are not less than 1/3 and no less than 6 ㎜ of the road deck plate thickness.
7. construction method according to claim 6, which is characterized in that utilize quartering hammer from the rectangle road deck saw kerf line Center start to be crushed around, and the quartering hammer install additional soft protecting net.
8. construction method according to claim 7, which is characterized in that the step 4) includes:
41) altitude scale is indicated on the outer wall of the well room upper section and well room lower section, and under the well room upper section and well room The outer wall and the inner wall subscript vertically and horizontally axis of symmetry of section, wherein longitudinal asymmetric axis is the center line of the drainage pipeline;Institute Setting hanging wire fall device at the vertically and horizontally highest point of the axis of symmetry is stated, to detect the verticality of well room at any time;
42) hand excavation, and the well room upper section and well room lower section segmentation merogenesis are sunk:
When hand excavation, the intermediate soil body is taken to form pan bottom shape, then symmetrically and evenly cut the earth around;
The well room lower section and well room upper section are successively hung in the base to after flattening, so that the well room lower section is vertically and horizontally right Claim axis corresponding with the vertically and horizontally cross hairs;
In the sinking watching of the well room upper section and well room lower section, the altitude scale is observed to grasp well room sinking at any time Elevation;The misalignment of axe for observing on well room outer wall the vertically and horizontally axis of symmetry simultaneously, further according on well room inner wall it is described in length and breadth The verticality of well room lower section and well room upper section is checked to the axis of symmetry and hanging wire pendant, and is rectified a deviation;
When the upper end of the well room lower section sinks down into 300~500 ㎜ of the base or more, stop cutting the earth, and in the well Rubber water-proof circle is installed in the upper end of room lower section, then places the well room upper section according to buried depth, and the axis of the well room upper section is answered It is overlapped with the axis of well room lower section;
When the well room lower section blade foot tyre tread sinks to the top of the drainage pipeline, stop cutting the earth, at this time inspection shaft Whether the deviation of the reserved N-shaped hole central axis of room lower section and drainage pipeline axis is within the scope of tolerance;
If continuing to take native sinking downwards within the scope of tolerance, until the well room sink down into design altitude or more 100~ When 150 ㎜, stopping takes native sinking, and observes well room sinking speed;
Ladder is installed using chemical method bar planting: first being punched on the inner wall of the well room upper section and well room lower section, then hole is purged Completely, high-strength anchoring adhesive is then injected into the hole, and ladder is inserted into the hole.
9. construction method according to claim 8, which is characterized in that step 5) includes:
The extra soil of well room lower section bottom is removed, and sawed-off at 150 ㎜ being no less than apart from the well room lower section inner wall The drainage pipeline takes out sawed-off extra drainage pipeline, and the well room lower section bottom after clearing up soil performs concrete mats Layer, after the concrete cushion reach design strength 75% after bind and baseplate reinforcing bar and pour underplate concrete, to the bottom After board concrete reaches design strength, water-proofing treatment is carried out to the gap between the N-shaped hole and drainage pipeline, then install chute Template simultaneously pours chute concrete.
10. construction method according to claim 9, which is characterized in that step 6) includes:
The cover board is installed at the top of the well room upper section, then the pit shaft is installed on the cover board and adjusts section, the well Cylinder adjusts section and is installed on the ladder using the chemical method bar planting before hanging;
The pit shaft adjusts the vertical central axis of section and is overlapped with the vertical axis for reserving in the circular hole on the cover board;
When installing the cover board and the pit shaft adjusts section, wash and dry between the top and cover board of the well room upper section with And the cover board and pit shaft adjust the seam crossing between the bottom of section, are then bonded in the seam crossing using waterproofing unction, with Prevent percolating water.
CN201910640067.4A 2019-07-16 2019-07-16 A kind of Submersed type inspection well and its construction method Pending CN110219359A (en)

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CN112282022A (en) * 2020-09-15 2021-01-29 北京建工土木工程有限公司 Method for quickly constructing rain sewage inspection well on existing road
CN113279470A (en) * 2021-06-30 2021-08-20 广东省第四建筑工程有限公司 Open-cut improved prefabricated horse riding well construction method

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