CN110306598B - Construction method of inspection well - Google Patents
Construction method of inspection well Download PDFInfo
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- CN110306598B CN110306598B CN201910479913.9A CN201910479913A CN110306598B CN 110306598 B CN110306598 B CN 110306598B CN 201910479913 A CN201910479913 A CN 201910479913A CN 110306598 B CN110306598 B CN 110306598B
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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
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0007—Production methods using a mold
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/002—Concrete
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- 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)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
- Revetment (AREA)
Abstract
The invention relates to a construction method of an inspection well, which comprises the following steps: 1) erecting and pouring a mold of a shaft of the inspection well; 2) backfilling around the shaft; 3) erecting a well curb formwork; 4) pouring the rough ground; 5) removing the mould; 6) the well base is arranged with the well cover; 7) and (5) pouring the clean ground. The invention has the beneficial effects that: the construction method of the invention enables the well ring and the ground to form a whole, thereby fundamentally solving the problem of deformation caused by external force, improving the use state of the inspection well, improving the pressure resistance and shear resistance of the well mouth and greatly improving the whole quality level of the inspection well; the umbrella-shaped supporting structure is convenient to contract and stable in structure, and compared with a floor type supporting structure, the umbrella-shaped supporting structure does not need ground leveling, so that the weight of the structure is reduced, and the umbrella-shaped supporting structure is more convenient and labor-saving in construction; the positioning frame can be used for multiple purposes, and has the functions of positioning and supporting as well as the functions of hanging, lifting and descending in the process of vibrating the side wall.
Description
Technical Field
The invention belongs to the field of inspection well construction, and particularly relates to a construction method of an integral inspection well.
Background
The construction of the traditional inspection well needs to prefabricate a reinforced concrete well curb in advance, and the well curb and the rough ground are completed by 2 working procedures. The traditional construction method has obvious defects, and the walling crib and the ground are separately poured, so that the walling crib and the ground are difficult to form a whole, and cracks are easy to generate; when the well ring is installed, the elevation is difficult to adjust, so that the installation is difficult, the labor force requirement is high, and the quality cannot be ensured; the prefabricated walling crib is heavy, large in size and inconvenient to transport; the installation process has the advantages of multiple processes, long time consumption, high difficulty and poor pavement quality, and the service life is reduced. With the rapid development of economic society, the requirements of people on inspection wells are becoming higher and higher, and the search for a novel inspection well construction method is a great trend of the current building industry.
Therefore, it is important to find an integral construction method for an inspection well with high quality and high efficiency.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a construction method of an inspection well.
The construction method of the inspection well comprises the following steps:
1) erecting and pouring a mold of a shaft of the inspection well; connecting a semicircular outer shaft mould and an inner shaft mould by using bolts, placing the semicircular outer shaft mould and the semicircular inner shaft mould on a base of excavated earthwork, pouring concrete, placing a positioning frame on the rough ground, hanging a vibrator at the upper end of the positioning frame, vibrating the concrete by using the vibrator in the pouring process, pouring the base of the concrete on the lower part of the excavated earthwork, unfastening an inner layer reinforcing bolt and an outer layer reinforcing bolt after the pouring process is finished, and taking out the outer shaft mould and the inner shaft mould;
2) backfilling around the shaft; backfilling soil around the shaft;
3) erecting a well curb formwork; after the shaft is poured, the mortar is subjected to formwork supporting work after meeting the design requirement, the umbrella-shaped supporting structure is placed from the top and then opened, the chain block hoisting ring on the upper part of the umbrella-shaped supporting structure is connected and tightened with the iron rod on the positioning frame to enable the umbrella-shaped supporting structure to be in a stable and immovable state, three separated bottom formworks are connected into a circular bottom formwork, the bottom formwork is connected with the embedded iron block on the umbrella-shaped supporting structure through the concave groove, the bottom formwork is placed stably and stressed uniformly, plastic waterproof cloth is laid on the bottom formwork, and then a mortar-separating iron bucket is arranged above the bottom formwork;
4) pouring the rough ground; pouring the rough ground and vibrating to be compact, checking the bottom template and the pulp-separating iron bucket constantly in the pouring process, and controlling the vibrating time and the vibrating force;
5) removing the mould; firstly, removing the iron bucket for separating the slurry, and ensuring the integrity of the round hole in the removing process; loosening the hand gourd lifting rings on the iron rod of the positioning frame, enabling the main supporting rod to move downwards to be separated from the bottom template, hooking the flexible rope by using a hook to enable the umbrella-shaped supporting structure to be contracted, and then taking out the contracted umbrella-shaped supporting structure through the circular opening; opening the bolt connection structure of the bottom template, dividing the bottom template into three independent templates, and taking out the three independent templates from the reserved circular hole of the walling crib respectively, thereby finishing the rough ground pouring process;
6) the well base is arranged with the well cover; leveling during installation, lifting a well base to a cast-in-place well ring by using a thick steel pipe and leveling the well base with a clean ground, adjusting the height of the thick steel pipe by using a triangular wedge, enabling a reserved bolt hole of the well base to penetrate through a foundation bolt of the well ring, cutting off the redundant part extending out of the foundation bolt of the well ring, and filling the reserved bolt hole of the well base with cement mortar; arranging a well cover embedded part on the well seat, placing the well cover on the well seat after the well seat is placed, and backfilling concrete in a gap between the well cover and the base layer;
7) pouring the clean ground; before construction, watering and wetting treatment is carried out, and after the clean ground is poured, concrete curing treatment is carried out.
Preferably, the method comprises the following steps: in the step 6), when the well seat and the well cover are installed, stay wires are used for leveling, when the well seat is installed, base material in the well seat installation range around the well mouth is removed and cleaned up according to the designed elevation, then the well seat installation is carried out according to the requirements of longitudinal slopes, the well seat installation is leveled with two thick steel pipes which are hung on the clean ground, the height of the thick steel pipes is adjusted by triangular wedges, and the gap between the well seat and the base layer is fixed by backfilling concrete.
Preferably, the method comprises the following steps: in the step 3), the bottom template is a separable retractable well ring template, the bottom template is formed by splicing three parts and is connected through a bolt connecting structure, a circular hole is formed in the center of the bottom template, and concave grooves are distributed in the outer ring of the bottom template.
Preferably, the method comprises the following steps: in the step 3), the umbrella-shaped supporting structure comprises a supporting rod base, a supporting main rod, a supporting side rod, an embedded iron block, a flexible rope, a hook and a chain block lifting ring, wherein the supporting side rod is connected through the supporting rod base and is automatically fixed to a certain angle after being opened to form a stable structure; support side lever middle part and be equipped with flexible rope, support side lever top is equipped with the embedding iron plate, and the embedding iron plate is connected with the concave groove cooperation on the die block board, supports the mobile jib top and is equipped with chain block rings, and chain block rings link to each other with the iron set.
Preferably, the method comprises the following steps: in the step 6), foundation bolts of the well ring are embedded at the depth of 1/3 on the upper part of the cast-in-place well ring and are connected with the reserved bolt holes of the well seat on the well seat.
Preferably, the method comprises the following steps: in the step 1), foundation bolts of the base are arranged on the base and are used for connecting a shaft.
Preferably, the method comprises the following steps: in the step 1), three nodes of the positioning frame are fixed by supporting steel bars.
The invention has the beneficial effects that:
1. the construction method of the invention enables the well ring and the ground to form a whole, fundamentally solves the problem of deformation caused by external force, improves the use state of the inspection well, improves the pressure resistance and shear resistance of the well mouth and greatly improves the whole quality level of the inspection well.
2. The umbrella-shaped supporting structure is convenient to contract and stable in structure, does not need ground leveling compared with a floor type supporting structure, reduces the weight of the structure, and is more convenient and labor-saving in construction.
3. The positioning frame can be used for multiple purposes, and has the functions of positioning and supporting as well as the functions of hanging, lifting and descending in the process of vibrating the side wall.
Drawings
FIG. 1 is a schematic view of an inspection well in its entirety;
FIG. 2 is a schematic view of a wellbore die;
FIG. 3 is a schematic view of a base wellbore junction;
FIG. 4 is a schematic view of a bottom template;
FIG. 5 is a schematic view of the bottom form attachment;
FIG. 6 is a schematic view of an umbrella support structure;
FIG. 7 is a top view of the spacer;
FIG. 8 is a schematic view of a cast-in-place walling crib;
FIG. 9 is a top plan view of the well base installation;
FIG. 10 is a cross-sectional view of the well base installation.
Description of reference numerals: 1-a wellbore; 2-backfilling; 3-plastic waterproof cloth; 4-ground surface; 5-bottom template; 6-a positioning frame; 7-iron rod; 8-a vibrator; 9-a pulp-separating iron bucket; 10-umbrella-shaped support structure; 11-inner layer reinforcing bolts; 12-outer layer reinforcing bolt; 13-inner wellbore mold; 14-outer wellbore mold; 15-base; 16-foundation anchor bolts; 17-circular opening; 18-a concave groove; 19-bolt connection structure; 20-support rod base; 21-supporting the main rod; 22-support side bar; 23-insert iron block; 24-hand chain block hoisting ring; 25-flexible cord; 26-hook; 27-supporting steel bars; 28-well ring anchor bolts; 29-cast-in-place walling crib; 30-clean ground; 31-well seat; 32-well cover; 33-thick steel pipe; 34-a wedge; and 35, reserving bolt holes in the well seat.
Detailed Description
The present invention will be further described with reference to the following examples. The following examples are set forth merely to aid in the understanding of the invention. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
As shown in fig. 1, 2 and 3, the inspection well shaft formwork support and pouring: the semicircular outer shaft mould 14 and the semicircular inner shaft mould 13 are connected through bolts and placed on a shaft base 15 of excavated earthwork, concrete pouring is carried out, a positioning frame 6 is placed on the rough ground surface 4, a concrete side wall vibrator 8 is hung at the upper end of the positioning frame 6, the concrete base 15 is poured at the lower part of the excavated earthwork, inner layer reinforcing bolts 11 and outer layer reinforcing bolts 12 are untied after the pouring process is finished, the outer shaft mould 14 and the inner shaft mould 13 are taken out, a shaft shaping mould is taken out, the suspended side wall vibrator 8 is needed in the pouring process, and the flow of the next step can be carried out after the whole process is finished.
Backfilling around the shaft: the concrete backfill around the shaft is carried out by a traditional method, which is not described in detail here.
As shown in fig. 4, 5 and 6, the walling crib formwork: after the shaft is poured, the mortar is supported after meeting the design requirements, the umbrella-shaped supporting structure 10 is placed from the top and then opened, the chain block hoisting ring 24 on the upper portion of the umbrella-shaped supporting structure 10 is connected with the iron rod 7 on the positioning frame 6 and tightened to achieve a stable and immovable state, three separated bottom templates 5 are connected into a circular bottom template, the circular bottom template is connected with the iron block 23 embedded into the umbrella-shaped supporting structure 10 through the concave groove 18 to achieve the functions of supporting and positioning, ten concave grooves 18 are arranged for connection, the bottom template 5 is placed stably and uniformly, the plastic waterproof cloth 3 is laid on the bottom template 5 to play a role of separating the mortar and preventing the mortar from leaking, and the mortar-separating iron barrel 9 is arranged above the bottom template.
Pouring the rough ground: pouring and vibrating tightly according to a traditional method, checking the bottom template 5 and the slurry-separating iron bucket 9 constantly in the pouring process, controlling the vibrating time and vibrating force and preventing slurry leakage and mold escape.
Removing the die: the iron barrel 9 for separating the slurry is firstly dismantled, and the integrity of the round hole 17 is ensured in the dismantling process. And (3) loosening the chain block hoisting ring 24 on the iron rod 7 of the positioning frame 6, enabling the main supporting rod 21 to move downwards to be separated from the bottom template 5, hooking the flexible rope 25 by using the hook 26 to enable the umbrella-shaped supporting structure 10 to be contracted, and then taking out the contracted umbrella-shaped supporting structure 10 through the circular hole 17. And (3) opening the bolt connecting structure 19 of the bottom template 5, dividing into three independent templates, and taking out the three independent templates from the reserved circular hole of the walling crib respectively, and then finishing the rough ground pouring process.
As shown in fig. 9 and 10, the well seat 31 is mounted with the well lid 32: during installation, leveling is carried out, the well seat 31 is lifted to be level with the clean ground 30 by two thick steel pipes 33, the height of the lower portion of each steel pipe is adjusted by a triangular wedge 34, the reserved bolt holes 35 of the well seat penetrate through the foundation bolts 28 of the well ring, redundant parts of the reserved bolt holes are cut off, and cement mortar is used for filling the reserved bolt holes 35 of the well seat. The well lid embedded parts are arranged on the well seat 31, after the well seat 31 is placed, the well lid 32 is placed on the well seat 31, and gaps between the well lid 32 and the base layer need to be backfilled with concrete.
And (3) casting the clean ground: before construction, watering and wetting treatment is carried out, after the clean ground 30 is poured, concrete curing treatment is carried out, natural curing is adopted, and thus an integral construction cycle of the inspection well is completed.
Specifically, three nodes of the positioning frame 6 are fixed by the supporting steel bars 27, so that the strength of the positioning frame meets the use requirement.
Specifically, a foundation bolt 16 is provided on the foundation 15 for connecting the shaft 1.
Specifically, the bottom template 5 is a separable retractable well ring template, the bottom template 5 is formed by splicing three parts and is connected through a bolt connecting structure 19, a circular hole 17 is formed in the center of the bottom template 5 and is used for allowing the umbrella-shaped supporting structure 10 to pass through and be taken out, and concave grooves 18 are distributed in the outer ring of the bottom template 5 and are used for being connected with the umbrella-shaped supporting structure 10.
Specifically, the umbrella-shaped supporting structure 10 comprises a supporting rod base 20, a supporting main rod 21, a supporting side rod 22, an embedded iron block 23, a flexible rope 25, a hook 26 and a chain block hoisting ring 24, wherein the supporting side rod 22 is connected through the supporting rod base 20 and is automatically fixed to a certain angle after being opened, so that a stable structure is formed; supporting side lever 22 middle part is equipped with flexible rope 25, and supporting side lever 22 top is equipped with embedding iron plate 23, and embedding iron plate 23 is connected with the concave groove 18 cooperation on the die block board 5, and supporting mobile jib 21 top is equipped with chain block rings 24, and chain block rings 24 links to each other with iron pole 7, and hook 26 and flexible rope 25 play the effect of shrink umbelliform bearing structure 10.
Specifically, a well ring foundation bolt 28 is embedded at the depth of 1/3 on the upper part of the cast-in-place well ring 29 and is connected with a well seat reserved bolt hole 35 on the well seat 31.
Claims (5)
1. A construction method of an inspection well is characterized in that: the method comprises the following steps:
1) erecting and pouring a mold of a shaft of the inspection well; connecting a semicircular outer shaft mould (14) and an inner shaft mould (13) by using bolts, placing the semicircular outer shaft mould and the semicircular inner shaft mould on a base (15) of an excavated earthwork, pouring concrete, placing a positioning frame (6) on a rough ground surface (4), hanging a vibrator (8) at the upper end of the positioning frame (6), vibrating the concrete by using the vibrator (8) in the pouring process, pouring the base (15) of the concrete on the lower part of the excavated earthwork, unfastening an inner layer reinforcing bolt (11) and an outer layer reinforcing bolt (12) after the pouring process is finished, and taking out the outer shaft mould (14) and the inner shaft mould (13);
2) backfilling around the shaft; backfilling the backfill soil (2) around the shaft (1);
3) erecting a well curb formwork; after the shaft is poured, the mortar is supported after meeting the design requirement, an umbrella-shaped supporting structure (10) is opened after being placed from top, three separated bottom templates (5) are connected into a circular bottom template after being connected with a chain block lifting ring (24) on the upper part of the umbrella-shaped supporting structure (10) and an iron rod (7) on a positioning frame (6) and tightened to form a stable and immovable state, the bottom template (5) is connected with an embedded iron block (23) on the umbrella-shaped supporting structure (10) through a concave groove (18), so that the bottom template (5) is placed stably and stressed uniformly, a plastic waterproof cloth (3) is laid on the bottom template (5), and a mortar-isolating iron barrel (9) is arranged above the bottom template (5); the umbrella-shaped supporting structure (10) comprises a supporting rod base (20), a supporting main rod (21), supporting side rods (22), an embedded iron block (23), a flexible rope (25), a hook (26) and a chain block hoisting ring (24), wherein the supporting side rods (22) are connected through the supporting rod base (20) and are automatically fixed to a certain angle after being opened to form a stable structure; a flexible rope (25) is arranged in the middle of the supporting side rod (22), an embedded iron block (23) is arranged at the top end of the supporting side rod (22), the embedded iron block (23) is matched and connected with a concave groove (18) in the bottom template (5), a chain block hoisting ring (24) is arranged at the top end of the supporting main rod (21), and the chain block hoisting ring (24) is connected with the iron rod (7); the bottom template (5) is a separable retractable well ring template, the bottom template (5) is formed by splicing three parts and is connected through a bolt connecting structure (19), a circular hole (17) is formed in the center of the bottom template (5), and concave grooves (18) are distributed on the outer ring of the bottom template (5);
4) pouring the rough ground; pouring the rough ground (4) and vibrating to compact, checking the bottom template (5) and the slurry-isolating iron bucket (9) constantly in the pouring process, and controlling the vibrating time and the vibrating force;
5) removing the mould; firstly, the iron sheet barrel (9) for separating the slurry is dismantled, and the integrity of the round hole (17) is ensured in the dismantling process; loosening a chain block hoisting ring (24) on an iron rod (7) of the positioning frame (6), enabling the supporting main rod (21) to move downwards to be separated from the bottom template (5), hooking the flexible rope (25) by using a hook (26) to enable the umbrella-shaped supporting structure (10) to be contracted, and then taking out the contracted umbrella-shaped supporting structure (10) through the circular opening (17); opening the bolt connecting structure (19) of the bottom template (5), dividing the bottom template into three independent templates, and taking out the three independent templates from the reserved circular hole of the walling crib respectively, thereby finishing the rough ground pouring process;
6) the well base is arranged with the well cover; leveling during installation, lifting a well seat (31) to a cast-in-place well ring (29) by using a thick steel pipe (33) and leveling the well seat with a clean ground (30), adjusting the height of the lower part of the thick steel pipe (33) by using a triangular wedge (34), enabling a well seat reserved bolt hole (35) to penetrate through a well ring foundation bolt (28), cutting off the redundant part extending out of the well ring foundation bolt (28), and filling the well seat reserved bolt hole (35) with cement mortar; arranging a well lid embedded part on the well seat (31), placing the well lid (32) on the well seat (31) after the well seat (31) is placed, and backfilling concrete in a gap between the well lid (32) and the base layer;
7) pouring the clean ground; before construction, watering and moistening treatment are carried out, and after the clean ground (30) is poured, concrete curing treatment is carried out.
2. The construction method of an inspection well according to claim 1, wherein: in the step 6), when the well seat (31) and the well cover (32) are installed, stay wires are used for leveling, when the well seat (31) is installed, base materials in the well seat installation range around a well mouth are removed and cleaned according to the designed elevation, then the well seat installation is carried out according to the requirement of a longitudinal slope, two thick steel pipes (33) are used for hoisting the well seat to the clean ground (30) to be level, the height of the thick steel pipes (33) is adjusted through triangular wedges (34), and gaps between the well seat (31) and the base layers are fixed through backfilled concrete.
3. The construction method of an inspection well according to claim 1, wherein: in the step 6), well ring foundation bolts (28) are embedded at the depth of 1/3 on the upper part of the cast-in-place well ring (29) and are connected with well seat reserved bolt holes (35) on the well seat (31).
4. The construction method of an inspection well according to claim 1, wherein: in the step 1), a foundation bolt (16) of the base is arranged on the base (15) and is used for connecting the shaft (1).
5. The construction method of an inspection well according to claim 1, wherein: in the step 1), three nodes of the positioning frame (6) are fixed by supporting steel bars (27).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910479913.9A CN110306598B (en) | 2019-06-04 | 2019-06-04 | Construction method of inspection well |
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| CN201910479913.9A CN110306598B (en) | 2019-06-04 | 2019-06-04 | Construction method of inspection well |
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| CN110306598B true CN110306598B (en) | 2021-03-26 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2153008A1 (en) * | 1994-07-11 | 1996-01-12 | Jeffrey W. House | Sealing system for sewer and water applications |
| US20020034418A1 (en) * | 2000-04-19 | 2002-03-21 | Koch Earl D. | Temporary ramp |
| US20080044225A1 (en) * | 2006-06-22 | 2008-02-21 | Tom Swartz | Manhole installation and repair assembly |
| JP2012017632A (en) * | 2010-07-09 | 2012-01-26 | Nichikon:Kk | Rehabilitation method of manhole inner wall surface and rehabilitation device of manhole inner wall surface |
| CN203334702U (en) * | 2013-07-09 | 2013-12-11 | 江苏建筑职业技术学院 | Protection umbrella of manual hole digging pile wellhead |
| CN105672363B (en) * | 2016-04-07 | 2017-12-12 | 王吉淼 | Cast-in-place cover plate construction technology and the scalable steel pipe used, remove device and bracket |
| CN107964982A (en) * | 2017-11-15 | 2018-04-27 | 郑州国知网络技术有限公司 | Manhole mouth umbrella temporary protection device is used in a kind of municipal administration |
| CN207775938U (en) * | 2017-12-31 | 2018-08-28 | 李晓真 | A kind of monoblock type walling crib construction formwork removing device of inspection shaft |
| CN208121816U (en) * | 2018-03-30 | 2018-11-20 | 杭州江润科技有限公司 | The constructing structure of bituminous pavement inspection shaft gug |
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