CN106703080A - Road inspection well structure and construction method thereof - Google Patents
Road inspection well structure and construction method thereof Download PDFInfo
- Publication number
- CN106703080A CN106703080A CN201610988298.0A CN201610988298A CN106703080A CN 106703080 A CN106703080 A CN 106703080A CN 201610988298 A CN201610988298 A CN 201610988298A CN 106703080 A CN106703080 A CN 106703080A
- Authority
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- China
- Prior art keywords
- well
- pit shaft
- bolt
- pedestal
- road inspection
- Prior art date
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Classifications
-
- 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
-
- 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
-
- 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
- E02D29/14—Covers for manholes or the like; Frames for covers
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Road Repair (AREA)
Abstract
The invention discloses a road inspection well structure. The technical scheme of the road inspection well structure is characterized in that the road inspection well structure comprises a shaft arranged in a well pit, a well base arranged on the shaft, and a well cover arranged on the well base; a bolt stretches out of the top face of the shaft and penetrates the well base to be connected with a nut; an asphalt pavement is arranged on the periphery of the well base; and a protecting cover used for shielding the bolt and the nut is buried in the asphalt pavement. The road inspection well structure solves the problem that when an existing road inspection well structure is maintained, the construction efficiency is low.
Description
Technical field
The present invention relates to Municipal Engineering Construction field, in particular, it is related to a kind of road inspection well structure and its applies
Work method.
Background technology
With continuing to develop for urban road, the foster pipe maintenance issues of manhole cover become increasingly conspicuous on road, because of well lid week
Enclosing the cracking destruction between road surface causes the traffic accidents that well lid displacement is damaged and caused of common occurrence.
At present, on existing road the connected mode between manhole cover and bottom pit shaft (or hole diameter), typically all examines
Look under well lid and directly do the steady well lid of slurry, then carry out the making of pavement asphalt concrete.Because this connected mode can not be by well
Lid and surrounding road structure carry out the effective connection of stabilization, and well lid road surface generation with around is caused under vehicular load long term
Cracking destruction, has in turn resulted in the displacement or damage of well lid, and very big potential safety hazard has been carried out to using of seat belts for road.Solve
The mode of this problem be well lid is carried out it is regular reprocess reinforcing, both wasted time and energy, maintenance cost is increased again, also there is peace
Full hidden danger, so how to solve this problem turns into a difficult problem of the pendulum in face of reality.
In the prior art, Authorization Notice No. discloses a kind of road inspection well for the Chinese invention patent of CN104499504B
And its construction method, the road inspection well is made up of well lid, well seat and pit shaft, the coaxial upper end for being packed in pit shaft of well seat, well lid
It is coaxially mounted on well seat；It is bituminous paving on pit shaft top surface top, well seat is located in bituminous paving, and well lid top surface and pitch
Road surface flushes, and the pit shaft is reinforced concrete structure, i.e., steel reinforcement cage is provided with pit shaft, in the shaft wall it is coaxial it is uniform between
Every being embedded with bolt；It is connected in the screw cap hole that the pre-buried bolt of the pit shaft installs into well seat and using nut.The road
Inspection shaft is that the pit shaft below well lid is made using armored concrete, and the pre-embedded bolt in the armored concrete pit shaft, will
Well seat and pit shaft are fixed with bolts, and are allowed to form an entirety, efficiently solve and produced between well lid periphery and road surface
The problem of raw cracking destruction.
But there is following defect in above-mentioned road inspection well：Due to well seat be typically all by concreting into,
Under raindrop erosion and vehicular load long term, well seat be easiest in fact it is destroyed, so, in road inspection well structure
In need most frequent replacing is exactly well seat, but the well in said structure is fixed on pit shaft by screw bolt and nut
, it is bituminous paving in well seat installation after-pouring, bituminous paving can bury screw bolt and nut, so that bolt spiral shell
Mother is combined as a whole with bituminous paving.In the case that well seat is subject to destruction to need to change, it is necessary to well seat is changed, one
As can using disintegrating machine by bituminous paving near well seat partial destruction fall, but because screw bolt and nut is to be buried in asphalt road
In face, so the bituminous paving remnants on the bolt and nut whole body are difficult to clean up, so as to increased difficulty of construction.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the present invention to provide a kind of road inspection well structure,
Efficiency of construction when being safeguarded to this road inspection well structure can be significantly improved.
To achieve the above object, the invention provides following technical scheme：A kind of road inspection well structure, including be arranged at
Pit shaft, the well seat being arranged on pit shaft and the well lid being arranged on well seat in well, the top surface of the pit shaft are extended with bolt,
The bolt is fed through the well seat and is connected with nut, and the periphery of the well seat is to be buried in bituminous paving, the bituminous paving
There is the protective cover for covering the bolt and the nut.
By using above-mentioned technical proposal, in the case that well seat is subject to destruction to need to change, it is necessary to which well seat is carried out
Change, when carrying out broken to bituminous paving, because screw bolt and nut is protect by protective cover, it is possible to by spiral shell
Screw bolt and nut is kept apart with bituminous paving, has been cleared up after bituminous paving, pitch residual is not had on screw bolt and nut, so very
Bolt can readily be backed out from bolt, new well seat is then reinstalled again, connected using original screw bolt and nut
Connect, this structure causes that the cleaning work to screw bolt and nut is eliminated, so greatly improving when well lid is changed
The efficiency of construction safeguarded.
Preferably, top surface of the top surface of the protective cover less than the bituminous paving.
By using above-mentioned technical proposal, so that the surface layer structure of bituminous paving is more complete, so, its structure is strong
Degree is more preferable, is difficult to be destroyed by vehicular load, extends its service life.
Preferably, the L-shaped setting of bolt is stretched into the pit shaft.
More stablized by using the fixed structure of above-mentioned technical proposal, bolt.
Preferably, the bottom of the well is provided with concreting into solid pedestal.
By using above-mentioned technical proposal so that the fixed structure of pit shaft bottom surface is more stablized.
Preferably, being connected by some reinforcing rods between the bottom of the pedestal and the well.
By using above-mentioned technical proposal so that the connectivity between pedestal and well more preferably, further increases pedestal
Stability.
Preferably, being connected by concavo-convex tongue and groove between the lower surface of the upper surface of the pedestal and the pit shaft.
By using above-mentioned technical proposal so that the stability between pit shaft and pedestal in the horizontal plane is more preferable.
Preferably, being concrete between the pit shaft and the side wall of well.
By using above-mentioned technical proposal so that the associativity between pit shaft and well side wall is more preferable, so that pit shaft
More stablize in well.
In view of the shortcomings of the prior art, it is another object of the present invention to provide a kind of road inspection well structure
Construction method, when the road inspection well structure to being made under this construction method is safeguarded, its efficiency of construction can be obvious
Improve.
To achieve the above object, the invention provides following technical scheme：One kind is for making above-mentioned road inspection well knot
The construction method of structure, comprises the following steps：
S1：With the prefabricated pit shaft of concreting, well seat, pre-embedded bolt, makes the bottom of pit shaft be molded annular groove in the wellbore；
S2：Well location unwrapping wire, excavation well, the external diameter of the internal diameter more than pit shaft of well；
S3：Reinforcing rod is inserted in well bottom, then pedestal is poured in well bottom, pedestal upper surface formed by integrally casting forms fixation
Ring；
S4：After pedestal and retainer ring solidify completely, pit shaft is placed on pedestal, annular groove coordinates with retainer ring, Ran Hou
Casting concrete forms concrete between the periphery of pit shaft and the side wall of well；
S5：.Well seat is placed on pit shaft, blending bolt and nut are fixed by well seat, then with protective cover by screw bolt and nut
Cover, re-lay bituminous paving.
By using above-mentioned technical proposal, screw bolt and nut is played a protective role, so that work when safeguarding
Work amount is reduced, and then improves efficiency of construction.
Preferably, in S1, steel reinforcement cage being placed in the internal diameter external mold consistent with pit shaft outer wall dimension and pouring to form well
Cylinder.
By using above-mentioned technical proposal so that the structure of pit shaft is firmer, pit shaft is higher to the support strength of well seat,
Compression strength is higher, so as to extend its service life.
Preferably, in S5, first rubber sheet gasket is placed on pit shaft through bolt, well seat is then installed in place.
By using above-mentioned technical proposal, rubber sheet gasket plays certain shock absorbing effect to well seat, so that well
Seat is influenceed to reduce by car load, and then extends its service life.
In sum, the present invention has the advantages that compared to prior art：1. pedestal of the invention for reinforcing bar it is mixed
Xtah Crude Clay structure, reinforcing bar is inserted with base bottom and well bottom contact position, so that pedestal and base soil layer be linked as one it is whole
Body, strengthens pedestal steadiness, is not likely to produce after permanent use and rocked；2. pit shaft is the prefabricated armored concrete installed knot
Structure, i.e., be provided with steel reinforcement cage in pit shaft, and coaxial uniform interval is embedded with bolt in shaft wall, has annular in the bottom of pit shaft
Groove；3. impact faces projection has the coaxial retainer ring being connected as a single entity, and pit shaft is consolidated by the annular groove of bottom with the cooperation of retainer ring
Be scheduled on pedestal, be easily installed and retainer ring the transverse shifting for limiting pit shaft, pour the concrete on the outside of pit shaft in postorder
Pit shaft will not be subjected to displacement during structure sheaf.
Brief description of the drawings
Fig. 1 is the sectional view of embodiment；
Fig. 2 is the A portions enlarged diagram of Fig. 1.
Reference：1st, bituminous paving；2nd, concrete；3rd, pit shaft；4th, base soil layer；5th, bolt；6th, steel reinforcement cage；7、
Rubber sheet gasket；8th, well seat；9th, well lid；10th, protective cover；11st, diaphragm；12nd, retainer ring；13rd, pedestal；14th, reinforcing rod；15th, well
Hole；16th, annular groove.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Embodiment：A kind of road inspection well structure, is mainly made up of, what is excavated well lid 9, well seat 8, pit shaft 3, pedestal 13
The bottom of well 15 is inserted and is embedded with some vertical reinforcing rods 14, and pedestal 13 is in the bottom of well 15 and reinforcing rod 14 exposes well
In 15 bottom surface portions insertion pedestal 13, projection has the coaxial retainer ring 12 being connected as a single entity to pedestal 13 above；The bottom of pit shaft 3 is reserved with
The annular groove 16 being engaged with retainer ring 12, pit shaft 3 is fixed on pedestal by the annular groove 16 of bottom and the cooperation of retainer ring 12
On 13；The top of pit shaft 3 is provided with the bolt 5 stretched out from inside it, the L-shaped setting of bolt 5, and well seat 8 passes through the attaching nut of bolt 5
, there is a height the coaxial upper end for being packed in pit shaft 3 less than the cylindrical protective cover 10 of well 8 top surfaces of seat outside each nut, prevents
The outside of shield 10 is stained with one layer of material for PLA（PLA）Degradable diaphragm 11；Well seat 8 section for " on " font,
Well lid 9 is coaxially mounted on well seat 8；Pit shaft 3 is outer and the space concrete 2 between base soil layer 4 is fixed, in pit shaft 3
Poured into a mould after installing and with the either flush of pit shaft 3, be bituminous paving 1 on the top surface top of pit shaft 3, well seat 8 is located at pitch
In road surface 1, the top surface of well lid 9 is flushed with bituminous paving 1.
The bolt 5 of well seat 8 fixes top the tubular protective cover 10 of cylinder, top seal, bottom opening, by bolt 5
Connecting portion with nut is protected.So unhardened pitch can be effectively prevented by spiral shell at postorder asphalt road surface 1
Screw thread on bolt 5 and the nut coordinated with it are coated, it is to avoid caused after pitch is fully hardened the later stage when needing to change well seat 8 due to
The situation that screw thread cannot be dismantled by viscous dead, facilitates the replacing of late well seat 8.The outer layer of protective cover 10 have one layer is degradable
Diaphragm 11 can keep apart protective cover 10 with bituminous paving 1, with the continuous degraded of diaphragm 11, in the He of protective cover 10
Corresponding gap is formed between bituminous paving 1, is also beneficial to conveniently remove protective cover 10 during later stage replacing well seat 8.
The construction method of the road inspection well structure, step is：
(1) making armored concrete pit shaft 3 and pre-embedded bolt 5 are poured：
1. according to the size of pit shaft 3 that the colligation of 3 steel reinforcement cage of pit shaft 6 is good, the perpendicular muscle and stirrup of pit shaft 3 are φ 10mm, spacing 10cm；
2. steel reinforcement cage 6 is placed in the internal diameter external mold consistent with the outer wall dimension of pit shaft 3, coaxial annular projection knot is arranged at external mold bottom
Structure, the internal model of supporting pit shaft 3, internal model and external mold can be bound round using soft template or the iron sheet of optical plane, inner support using in reinforcing bar
Plus cross hang carries out support reinforcement；
3. pre-embedded bolt 5 is installed, quantity at least two, coaxial uniform interval is laid；It is straight according to the circumference where pre-embedded bolt 5
Footpath, using two stirrups of φ 16mm steel bar meters, bolt 5 is welded on two stirrups along all equidistant points, on two stirrups
Lower spacing 15cm, you can pre-buried bolt 5 is carried out into overall placement, and is fixed with the bar connecting of pit shaft 3, to ensure pre-embedded bolt
5 position is correct；
4. tankful pours C30 concrete, and vibration compacting, and vibrating spear should not encounter pre-embedded bolt 5, reinforcing bar and mould when noting vibrating
Plate etc., the position after the completion of concreting again to pre-embedded bolt 5 is checked, and concrete surface is entered before concrete initial set
Pinch hair of going is processed, and is conserved after covering watering is carried out after concrete setting to it；Top of concrete elevation=the well lid 9 for pouring is designed
Height-the 5mm of the well of elevation-well lid 9 seat 8 integral thickness-pedestal 13, the control errors of the height of concreting pit shaft 3 are in 0 ~ -5mm.
In addition, the top eminence concrete surface 6cm of pre-embedded bolt 5；
5. interior external mold is removed when concrete strength reaches the 50% of design strength, pit shaft 3 is obtained after it solidifies completely.
(2) well location unwrapping wire：Base soil layer 4 below road is released well location center line using instrument, then releases pit shaft 3
The lower collar thread of excavation, has more a segment distance and is defined by lower collar thread size than the diameter outer wall dimension of brick setting pit shaft 3, will lower collar thread
Spread out with lime, excavated with facilitating；
(3) the anti-slot grooving of pit shaft 3：According to the well location unwrapping wire of step (2), base soil layer 4 is abolished and cleared up using machinery,
Then excavation face is made an overall screening totally；
(4) armored concrete of pedestal 13 is poured：In the bottom of well 15, endways inserting buries some reinforcing bars, is propped on the apical side height of pedestal 13
With the raised consistent mould of the external mold bottom annular of pit shaft 3, the armored concrete of pedestal 13 is then poured, when its intensity reaches design by force
During the % of degree, remove mould on the outside of annular protrusion and wait pedestal 13 to solidify completely and reach design strength；
(5) pit shaft 3 is installed：Annular protrusion in the bottom annular recess 16 of prefabricated pit shaft 3 and pedestal 13 is placed to it, so
Excavation face outer to pit shaft 3 and between base soil layer 4 is also carried out pouring into a mould and vibration compacting with concrete afterwards；
(6) well seat 8 is installed：First the rubber sheet gasket 7 of mm is placed on pit shaft 3 through bolt 5, well seat 8 is then installed in place,
And to add by nut screwing clamping, under nut with steel plate washer, nut screwing clamping is reinforced and symmetrically carried out by several times, makes sure to keep in mind once to screw on；
Well lid 9 can be laid after well 8 installations of seat, then protective cover 10 is enclosed within nut, then put prefabricated PLA
（PLA）Degradable diaphragm 11, the construction of bituminous paving 1 just can be carried out afterwards.
The bolt 5 and nut used in the present embodiment are intended to be processed using galvanizing, to increase the anti-corrosion of bolt 5 and nut
Erosion ability.
The above is only the preferred embodiment of the present invention, and protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical schemes belonged under thinking of the present invention belong to protection scope of the present invention.It should be pointed out that for the art
Those of ordinary skill for, some improvements and modifications without departing from the principles of the present invention, these improvements and modifications
Should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of road inspection well structure, including the pit shaft (3) being arranged in well (15), the well seat that is arranged on pit shaft (3)
(8) and the well lid (9) that is arranged on well seat (8), the top surface of the pit shaft (3) is extended with bolt (5), and the bolt (5) wears
Cross well seat (8) and be connected with nut, the periphery of well seat (8) is bituminous paving (1), it is characterised in that：The asphalt road
The protective cover (10) having for covering the bolt (5) and the nut is buried in face (1).
2. road inspection well structure according to claim 1, it is characterised in that：The top surface of the protective cover (10) is less than institute
State the top surface of bituminous paving (1).
3. road inspection well structure according to claim 1, it is characterised in that：Institute is stretched into the L-shaped setting of bolt (5)
State in pit shaft (3).
4. road inspection well structure according to claim 1, it is characterised in that：The bottom of the well (15) is provided with mixed
Solidifying soil is poured and built up in solid pedestal (13).
5. road inspection well structure according to claim 4, it is characterised in that：The pedestal (13) and the well (15)
Bottom between connected by some reinforcing rods.
6. road inspection well structure according to claim 4, it is characterised in that：The upper surface of the pedestal (13) with it is described
Connected by concavo-convex tongue and groove between the lower surface of pit shaft (3).
7. road inspection well structure according to claim 1, it is characterised in that：The pit shaft (3) and the side of well (15)
It is concrete (2) between wall.
8. a kind of construction method for making road inspection well structure as claimed in claim 1, it is characterised in that：Including following
Step：
S1：With the prefabricated pit shaft of concreting (3), well seat (8), pre-embedded bolt (5), makes the bottom of pit shaft (3) in pit shaft (3)
Portion is molded annular groove (16)；
S2：Well location unwrapping wire, excavation well (15), the external diameter of the internal diameter more than pit shaft (3) of well (15)；
S3：Reinforcing rod is inserted in well (15) bottom, then pedestal (13), pedestal (13) upper surface is poured in well (15) bottom
Formed by integrally casting forms retainer ring (12)；
S4：After pedestal (13) and retainer ring (12) solidify completely, pit shaft (3) is placed on pedestal (13), annular groove (16)
Coordinate with retainer ring (12), then casting concrete forms concrete between the side wall of the periphery of pit shaft (3) and well (15)
Structure sheaf (2)；
S5：Well seat (8) is placed on pit shaft (3), blending bolt (5) and nut are fixed by well seat (8), then use protective cover
(10) bolt (5) and nut are covered, re-lays bituminous paving (1).
9. construction method according to claim 8, it is characterised in that：In S1, steel reinforcement cage (6) is placed to internal diameter and well
Pour to form pit shaft (3) in the consistent external mold of cylinder (3) outer wall dimension.
10. construction method according to claim 8, it is characterised in that：In S5, first by rubber sheet gasket (7) through bolt
(5) it is placed on pit shaft (3), well seat (8) is then installed in place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610988298.0A CN106703080A (en) | 2016-11-09 | 2016-11-09 | Road inspection well structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610988298.0A CN106703080A (en) | 2016-11-09 | 2016-11-09 | Road inspection well structure and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106703080A true CN106703080A (en) | 2017-05-24 |
Family
ID=58940737
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610988298.0A Pending CN106703080A (en) | 2016-11-09 | 2016-11-09 | Road inspection well structure and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106703080A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412019A (en) * | 2018-02-01 | 2018-08-17 | 中国十七冶集团有限公司 | A kind of cell road receipts well reinforcement means |
| CN109137986A (en) * | 2018-08-09 | 2019-01-04 | 杭州江润科技有限公司 | Urban road inspection shaft walling crib green promotes reinforced construction method |
| CN110565694A (en) * | 2019-09-06 | 2019-12-13 | 河北中基华工程项目管理有限公司 | mounting structure of inspection well and construction method thereof |
| CN111636484A (en) * | 2020-04-22 | 2020-09-08 | 河南省金德园林绿化工程有限公司 | Municipal inspection well structure and construction method thereof |
| CN112112195A (en) * | 2019-06-19 | 2020-12-22 | 中国石油化工股份有限公司 | Bolt connection type manhole well of gas station |
| CN113107016A (en) * | 2021-04-23 | 2021-07-13 | 广东电网有限责任公司 | Rotating locking type explosion-proof well lid assembly |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2061575U (en) * | 1989-04-03 | 1990-09-05 | 王英年 | Theft-proof device for manhole cover |
| JPH11323979A (en) * | 1998-05-13 | 1999-11-26 | Daiwa Juko Kk | Height adjusting device and adjusting method of manhole cover |
| CN201232197Y (en) * | 2008-05-22 | 2009-05-06 | 中铁十二局集团有限公司 | Combined inspection well |
| CN104499504A (en) * | 2014-11-25 | 2015-04-08 | 中铁四局集团第三建设有限公司 | Road inspection well and construction method thereof |
-
2016
- 2016-11-09 CN CN201610988298.0A patent/CN106703080A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2061575U (en) * | 1989-04-03 | 1990-09-05 | 王英年 | Theft-proof device for manhole cover |
| JPH11323979A (en) * | 1998-05-13 | 1999-11-26 | Daiwa Juko Kk | Height adjusting device and adjusting method of manhole cover |
| CN201232197Y (en) * | 2008-05-22 | 2009-05-06 | 中铁十二局集团有限公司 | Combined inspection well |
| CN104499504A (en) * | 2014-11-25 | 2015-04-08 | 中铁四局集团第三建设有限公司 | Road inspection well and construction method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412019A (en) * | 2018-02-01 | 2018-08-17 | 中国十七冶集团有限公司 | A kind of cell road receipts well reinforcement means |
| CN109137986A (en) * | 2018-08-09 | 2019-01-04 | 杭州江润科技有限公司 | Urban road inspection shaft walling crib green promotes reinforced construction method |
| CN109137986B (en) * | 2018-08-09 | 2020-10-30 | 杭州江润科技有限公司 | Green lifting and reinforcing construction method for manhole ring of urban road inspection well |
| CN112112195A (en) * | 2019-06-19 | 2020-12-22 | 中国石油化工股份有限公司 | Bolt connection type manhole well of gas station |
| CN110565694A (en) * | 2019-09-06 | 2019-12-13 | 河北中基华工程项目管理有限公司 | mounting structure of inspection well and construction method thereof |
| CN111636484A (en) * | 2020-04-22 | 2020-09-08 | 河南省金德园林绿化工程有限公司 | Municipal inspection well structure and construction method thereof |
| CN111636484B (en) * | 2020-04-22 | 2021-07-06 | 河南省金德园林绿化工程有限公司 | Municipal inspection well structure and construction method thereof |
| CN113107016A (en) * | 2021-04-23 | 2021-07-13 | 广东电网有限责任公司 | Rotating locking type explosion-proof well lid assembly |
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