CN112761194A - Rapid resetting method for urban road manhole cover after sinking - Google Patents
Rapid resetting method for urban road manhole cover after sinking Download PDFInfo
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- CN112761194A CN112761194A CN202110160401.3A CN202110160401A CN112761194A CN 112761194 A CN112761194 A CN 112761194A CN 202110160401 A CN202110160401 A CN 202110160401A CN 112761194 A CN112761194 A CN 112761194A
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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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Abstract
The invention particularly relates to a quick resetting method for a sunk urban road well cover, which solves the problems that the conventional maintenance method for the sunk urban road well cover wastes time and labor, has high maintenance cost and influences the normal operation of a road. A quick resetting method for a sunk urban road well cover comprises the following steps: s1: installing a well cover device; s2: preparation before maintenance; s3: roughly adjusting the position of the well lid device; s4: fine adjustment of the position of the well lid device; s5: checking a yellow oil layer; s6: repairing the asphalt pavement; s7: the well lid body resets. The invention realizes the quick reset of the well cover after sinking, and has little influence on the normal operation of the road; and the well lid device can rationally utilize partial subassembly of original well lid, has simplified processing preparation, has advantages such as simple manufacture, construction convenience, maintenance are swift, low cost, and this technique can be widely used in new road engineering in the city and old road of city changes, extension engineering.
Description
Technical Field
The invention relates to an urban road construction matching technology, in particular to a quick resetting method for a sunk urban road well cover.
Background
In urban road construction, plane intersection or overlapping of urban roads and underground pipelines often occurs, and well covers of a large number of inspection wells are inevitably positioned on the urban roads and become a component of the road surface of the roads. When the urban road is built, laying engineering of underground pipelines (including tap water pipelines, gas pipelines, heat supply pipelines, rainwater pipelines, sewage pipelines, communication pipelines, power pipelines and the like) and construction of inspection wells are firstly completed, the elevation of the top surface of the well cover is controlled to be consistent with that of the asphalt pavement, and the smooth pavement when the well cover is met is ensured. When the inspection well is constructed, most of the well body is constructed by clay bricks, concrete blocks and the like by cement mortar, and the well cover is installed (the well cover is solidified with the cement mortar or the fine concrete) after the cement mortar or the fine concrete is paved on the top of the well body.
After the road is opened and operated, the well cover can sink in a short time, so that the vehicle can bump obviously at the well cover, the asphalt concrete pavement around the well cover cracks and sinks, and the local damage of the pavement is serious. The sinking of the urban road well cover has the following reasons: firstly, due to the restriction of a construction site, the excavation range is small during the construction of underground pipelines, the base treatment and landfill compaction are difficult, so that the subsidence of the foundation at the inspection well is slightly larger than that of the surrounding road engineering, particularly the subsidence of a direct-buried pipeline is larger, the foundation at the inspection well is easy to soften due to water leakage, the subsidence of the foundation at the inspection well is further aggravated, and the well body is subsided due to the subsidence of the foundation; secondly, the well body adopts cement mortar to build a plurality of layers of building blocks, and after the operation is started, the elevation of the top of the well body is obviously reduced along with the continuous hardening and drying shrinkage of the cement mortar; thirdly, after the road is opened and operated, the well cover is further sunk due to the action of a large amount of loads; especially, after the well lid has appeared certain sinking volume, the impact effect of jolting repeatedly of vehicle leads to the well lid to sink the aggravation.
At present, each urban road management department regularly arranges restoration maintenance of the peripheral road surface of the well cover according to the damage condition of the peripheral road of the well cover, namely, a cutting machine is used for cutting the peripheral damaged road surface of the well cover, a road surface structure layer is dug out, the well cover is lifted to a road surface elevation by cement mortar or fine concrete, and the peripheral road surface of the well cover is restored by cast-in-place concrete or asphalt concrete.
However, practice shows that the existing maintenance method for the sunk urban road well cover has the following problems: firstly, the labor and the time are wasted, the normal operation of road vehicles is influenced, and the road vehicles are not suitable to be opened immediately after concrete pouring (a period of maintenance is required); secondly, when the asphalt concrete is adopted to repair the pavement, the maintenance cost is higher because the consumption of the asphalt concrete is less and a special asphalt mixing station and a special transport vehicle are required to be matched.
Disclosure of Invention
The invention provides a quick resetting method for a sunk urban road well cover, which aims to solve the problems that the conventional maintenance method for the sunk urban road well cover wastes time and labor, has high maintenance cost and influences the normal operation of a road.
The invention is realized by adopting the following technical scheme:
a quick resetting method for a sunk urban road well cover comprises the following steps:
s1: installation of the well lid device: the manhole cover device is arranged at an inspection well of an urban road and comprises a manhole cover body, a manhole body and an annular manhole ring, wherein the manhole cover body is embedded in the upper part of the manhole ring, and the upper end surface of the manhole cover body and the upper end surface of the manhole ring are flush with the upper surface of an asphalt pavement; an annular horizontal mounting platform is integrally arranged at the lower part of the inner side wall of the walling crib; a cushion layer is laid on the upper end surface of the well body, an annular base is arranged on the upper surface of the cushion layer, and the upper part of the base is connected with the horizontal mounting table through a height adjusting mechanism; the height adjusting mechanism comprises a plurality of adjusting bolts which are distributed at equal intervals along the circumferential direction and are vertically arranged, the heads of the adjusting bolts are rotatably arranged on the horizontal mounting table in a penetrating way, the top ends of the heads extend out of the upper end face of the horizontal mounting table, and a distance is reserved between the top ends of the heads and the well lid body; the lower side of each adjusting bolt is fixedly provided with a high-strength bolt with the downward direction and the head part abutting against the bottom surface of the horizontal mounting table, and the top end surface of each high-strength bolt is provided with an inner screw hole in threaded fit with the threaded rod of the adjusting bolt; the lower part of each high-strength bolt is provided with a hexagonal prism-shaped threaded sleeve of which the upper part is in threaded connection with the high-strength bolt, and the bottom of the threaded sleeve is clamped on the upper part of the base; the outer part of the high-strength bolt and the outer part of the threaded sleeve are sleeved with a vertical corrugated pipe between the base and the horizontal mounting table, and annular grease layers are arranged between the corrugated pipe and the high-strength bolt and between the corrugated pipe and the threaded sleeve;
s2: preparation before maintenance: after the manhole cover body sinks after a certain time of road operation, firstly arranging a roadblock type construction enclosure around the manhole cover device to be maintained, then arranging a safety warning mark, and then removing the manhole cover body to ventilate the manhole so as to discharge methane in the manhole;
s3: coarse adjustment of the position of the well lid device: firstly, placing a guiding rule on an asphalt pavement around a wellhead of an inspection well, so that the guiding rule is positioned above the inspection well; then, a first adjusting bolt is screwed forwards, the first adjusting bolt rotates to drive a high-strength bolt fixed with the first adjusting bolt to rotate synchronously, so that the exposed length of the high-strength bolt on a threaded sleeve is increased, the purpose of lifting the well ring is achieved until the height of the well ring at the first adjusting bolt is basically level with the bottom surface of the guiding ruler, then, the principle that three points determine a plane is utilized, and the other two adjusting bolts which are distributed in a triangular shape with the first adjusting bolt are screwed forwards in sequence by the same method, so that the upper end surface of the well ring is basically level with the bottom surface of the guiding ruler; finally, positively screwing the heights of the other adjusting bolts to ensure that the head of each high-strength bolt is abutted against the bottom surface of the horizontal mounting table, thereby completing the coarse adjustment of the position of the well lid device;
s4: fine adjustment of the position of the well lid device: the placement position of the guiding ruler is changed in multiple directions, the height of the well ring is sequentially checked along the circumferential direction, when a gap still exists between the upper end face of the well ring and the bottom surface of the guiding ruler, the adjusting bolt at the position is positively screwed, the adjusting bolt rotates to drive the high-strength bolt fixed with the adjusting bolt to synchronously rotate, so that the exposed length of the high-strength bolt on the threaded sleeve is increased, the purpose of lifting the well ring is achieved, and the height of the well ring at the position is flush with the bottom surface of the guiding ruler; when the upper end surface of the walling crib is higher than the bottom surface of the running rule, the adjusting bolt at the position is reversely screwed, the adjusting bolt rotates to drive the high-strength bolt fixed with the adjusting bolt to synchronously rotate, so that the exposed length of the high-strength bolt on the threaded sleeve is reduced, and the purpose of lowering the walling crib is realized until the height of the walling crib at the position is flush with the bottom surface of the running rule; repeating the above process until all parts of the upper end surface of the well ring are flush with the bottom surface of the guiding ruler, namely flush with the height of the asphalt pavement around the well mouth of the inspection well, thereby finishing the fine adjustment of the position of the well lid device;
s5: checking a yellow oil layer: checking the filling fullness of a butter layer in the corrugated pipe, if the filling is not full, supplementing butter into the corrugated pipe, and adjusting the length of the corrugated pipe to ensure that a horizontal mounting table at the top of the corrugated pipe is contacted, the bottom of the corrugated pipe is contacted with a base, and simultaneously, the butter layers between the corrugated pipe and the high-strength bolt and between the corrugated pipe and the threaded sleeve are filled fully;
s6: repairing the asphalt pavement: hot asphalt is poured into cracks of the asphalt pavement around the wellhead of the inspection well, so that the asphalt pavement is repaired;
s7: the well lid body resets: well lid body has been covered, the clearance job site, removes roadblock formula construction and encloses fender and safety warning sign, resumes to lead to the car.
The well lid device can uniformly transmit the vehicle load to the base of the inspection well, and the stress transmission sequence of the well lid device is as follows from top to bottom: the manhole cover comprises a manhole cover body, a manhole ring, a horizontal mounting table, a high-strength bolt, a threaded sleeve, a base, a cushion layer, a manhole body and a manhole base; wherein, the base can be spread the upper portion pressure that comes from the vehicle load and then transmit to the well bore.
The combined structure design of the high-strength bolts and the threaded sleeves can bear all vehicle loads on the upper part of the well lid body, and can adjust the exposed length of each high-strength bolt on the threaded sleeves through the adjusting bolts, so that the elevation of a well ring is changed, and the purpose of adjusting the height of the well lid device is achieved; the adjusting bolt and the high-strength bolt are fixed into a whole, and the high-strength bolt is rotated by screwing the adjusting bolt, so that the exposed length of the high-strength bolt on the threaded sleeve is adjusted, and the operation convenience in adjusting the high-strength bolt is improved; the corrugated pipe is used for isolating the high-strength bolt from a humid environment in the well, and the grease layer is arranged in the corrugated pipe, so that the reliability of threaded connection between the high-strength bolt and the threaded sleeve is further guaranteed.
The upper part of the outer side wall of the manhole ring is attached to the asphalt pavement, the inner side wall of the manhole ring extends inwards to form an integral annular supporting table which is tightly attached to the bottom surface of the manhole cover body, and the horizontal mounting table is integrally arranged at the lower part of the inner side wall of the supporting table; the upper portion of brace table wears to be equipped with a plurality of along the equidistant distribution of circumference and along the anchor reinforcing bar of radial arrangement, and the tail end of anchor reinforcing bar stretches into the inside of bituminous paving.
The structural design of the supporting table can provide a stable supporting effect for the well lid body, and the vehicle load above the well lid body can be stably transmitted to a lower structure of the well lid device; the structural design of anchor reinforcing bar can restrict the walling crib and take place to rotate the dislocation, has improved the installation stability of this well lid device.
The adjusting bolt is a hexagon bolt; a plurality of mounting round holes distributed along the circumferential direction at equal intervals are vertically arranged on the horizontal mounting table in a penetrating mode, and the adjusting bolts are arranged in inner cavities of the mounting round holes in a one-to-one correspondence mode.
When in maintenance, the adjusting bolt can be adjusted by using the socket spanner, so that the rough adjustment and the fine adjustment of the position of the well lid device are realized, and the operability of the well lid device is improved.
The bottom end face of the head of the adjusting bolt is fixed with the top end face of the head of the high-strength bolt through welding.
This structural design makes adjusting bolt and the threaded connection portion of high strength bolt only need bear the annular power of turning, and needn't bear the gravity and the vehicle load of direction from top to bottom, has alleviateed this threaded connection portion's atress size, has prolonged the life of well lid device to a certain extent.
The top of the side wall of the corrugated pipe is fixedly connected with the head of the high-strength bolt, the bottom of the side wall of the corrugated pipe is fixedly connected with the lower part of the outer side wall of the threaded sleeve through a clamp.
This structural design can prevent that the butter layer from oozing from the bellows for the butter layer can keep plump in the use, has improved the rust-resistant effect of butter layer.
The base comprises an upper base and a lower base which are distributed from top to bottom and have the same size, the upper base and the lower base are fixedly connected through a plurality of connecting bolts which are distributed at equal intervals along the circumferential direction, and fastening nuts positioned in the cushion layer are screwed at the bottoms of the connecting bolts.
The combined structure design of the upper base, the lower base and the connecting bolt reduces the processing difficulty of the bases, and further reduces the processing difficulty of the well lid device; the structural design that connecting bolt and fastening nut imbed the bed course for base and bed course combine together better, can exert certain anchor effect simultaneously, prevent that the base from taking place to rotate in the use.
The upper base is vertically provided with a plurality of hexagonal holes which are distributed in a staggered manner with the connecting bolts and are matched with the outer side wall of the threaded sleeve in shape in a penetrating manner, and the bottoms of the threaded sleeves are correspondingly clamped in the inner cavities of the hexagonal holes one by one; a bottom sealing bolt which is upward in direction and is positioned in the inner cavity of the hexagonal hole is screwed at the bottom of each threaded sleeve, the bottom sealing bolt is a round-head bolt with a straight groove at the head, a rubber gasket is clamped between the bottom sealing bolt and the threaded sleeve, and the outer side wall of the rubber gasket is attached to the wall of the hexagonal hole; an engine oil layer located on the upper side of the rubber gasket is arranged between the outer side wall of the threaded sleeve and the hexagonal hole.
The structural design of the hexagonal hole can prevent the bolt sleeve from rotating in the using process and improve the plane positioning effect when the threaded sleeve is installed; the integrated configuration design of back cover bolt, rubber packing ring, machine oil layer utilizes the infiltration effect of machine oil, prevents that the bottom of threaded sleeve and high strength bolt from rustting, and cooperation bellows and butter layer are to the rust-resistant action on high strength bolt and threaded sleeve upper portion, have further promoted the rust-resistant effect of well lid device.
The outer side wall lower part of the walling crib, the outside of the height adjusting mechanism and the outside of the base are jointly sleeved with an antirust protective cylinder which is positioned on the upper side of the well body and embedded inside the road foundation bed, and the side wall of the antirust protective cylinder is provided with a plurality of drain holes which are positioned outside the height adjusting mechanism.
The structure design of the anti-rust protection cylinder can form an anti-rust well wall internally and can play a supporting role externally, so that the inward extrusion force of a road foundation bed on the well lid device is relieved, the sinking aggravation caused by lateral instability is further prevented, and a certain space is provided for the height adjustment operation of the well lid device; the structural design of wash port can in time get rid of ponding, prevents that frost heaving from appearing in the road surface all around the well lid device in winter and destroying.
The well lid body is a round well lid; the well body, the well ring, the upper base, the lower base and the antirust protective cylinder are all in circular shapes; the well lid body, the well ring, the upper base and the lower base are all made of cast iron; the antirust casing is made of reinforced concrete or cast iron; the cushion layer is made of cement mortar or fine concrete; the threaded sleeve is a high-strength sleeve.
In step S2, before maintenance, whether the well lid body sinks is judged by using a test method of the automobile rolling well lid device, and once a bump phenomenon is found when an automobile passes through the well lid body in the test, the well lid device at the bump position is maintained; the manhole ventilation operation in step S2 is performed according to the storm sewer downhole operation safety regulations.
The invention designs a brand-new well lid resetting method, which realizes quick resetting of the well lid after sinking and has little influence on normal operation of roads; the manhole cover device can reasonably utilize partial components of the original manhole cover, simplifies processing and manufacturing, has the advantages of simple manufacturing, convenient construction, quick maintenance, low cost and the like, improves urban road passing conditions and urban image, is suitable for various circular or square inspection wells with pipelines arranged on urban roads, and can be widely applied to urban newly-built road engineering and urban old road reconstruction and extension engineering.
Drawings
FIG. 1 is a schematic view of the construction of the manhole cover assembly of the present invention;
FIG. 2 is a schematic diagram of the configuration of the lost circulation wellbore casing of the present invention;
FIG. 3 is a schematic view of the construction of the adjusting bolt mounting of the present invention;
FIG. 4 is a schematic top view of the upper base of the present invention;
FIG. 5 is a schematic structural view of the joint between the upper base and the lower base in the present invention;
FIG. 6 is a schematic view of the structure of the back cover bolt of the present invention;
fig. 7 is a schematic structural view of the manhole cover body in the invention.
In the figure, 1-a well cover body, 2-a well body, 3-a well ring, 4-a horizontal mounting platform, 5-a cushion layer, 6-an adjusting bolt, 7-a high-strength bolt, 8-an internal screw hole, 9-a threaded sleeve, 10-a corrugated pipe, 11-a butter layer, 12-a bituminous pavement, 13-a supporting platform, 14-an anchoring steel bar, 15-a mounting round hole, 16-an upper base, 17-a lower base, 18-a connecting bolt, 19-a fastening nut, 20-a hexagonal hole, 21-a bottom sealing bolt, 22-a rubber gasket, 23-a road foundation bed, 24-an antirust protecting cylinder and 25-a connecting bolt mounting hole of the upper base; 26-connecting bolt mounting holes of the lower base; 27-a load-bearing ring; 28-cross rib; 29-vehicle load.
Detailed Description
A quick resetting method for a sunk urban road well cover comprises the following steps:
s1: installation of the well lid device: the manhole cover device is installed at an inspection well of an urban road and comprises a manhole cover body 1, a manhole body 2 and an annular manhole ring 3, wherein the manhole cover body 1 is embedded at the upper part of the manhole ring 3, and the upper end surface of the manhole cover body 1 and the upper end surface of the manhole ring 3 are flush with the upper surface of an asphalt pavement 12; an annular horizontal mounting platform 4 is integrally arranged at the lower part of the inner side wall of the walling crib 3; a cushion layer 5 is laid on the upper end face of the well body 2, an annular base is arranged on the upper surface of the cushion layer 5, and the upper part of the base is connected with a horizontal mounting table 4 through a height adjusting mechanism; the height adjusting mechanism comprises a plurality of adjusting bolts 6 which are distributed at equal intervals along the circumferential direction and are vertically arranged, the heads of the adjusting bolts 6 are rotatably arranged on the horizontal mounting table 4 in a penetrating way, the top ends of the heads extend out of the upper end face of the horizontal mounting table 4, and a distance is reserved between the top ends of the heads and the well lid body 1; a high-strength bolt 7 with the downward direction and the head abutting against the bottom surface of the horizontal mounting table 4 is fixed on the lower side of each adjusting bolt 6, and an inner threaded hole 8 in threaded fit with the threaded rod of each adjusting bolt 6 is formed in the top end surface of each high-strength bolt 7; the lower part of each high-strength bolt 7 is provided with a hexagonal prism-shaped threaded sleeve 9 of which the upper part is in threaded connection with the high-strength bolt, and the bottom of the threaded sleeve 9 is clamped on the upper part of the base; the outer part of the high-strength bolt 7 and the outer part of the threaded sleeve 9 are sleeved with a vertical corrugated pipe 10 positioned between the base and the horizontal mounting table 4, and annular grease layers 11 are arranged between the corrugated pipe 10 and the high-strength bolt 7 and between the corrugated pipe 10 and the threaded sleeve 9;
s2: preparation before maintenance: after the manhole cover body 1 sinks after a certain time of road operation, firstly, arranging a roadblock type construction enclosure around the manhole cover device to be maintained, then, arranging a safety warning mark, and then, removing the manhole cover body 1 to ventilate the manhole so as to discharge biogas in the manhole;
s3: coarse adjustment of the position of the well lid device: firstly, a guiding rule is placed on an asphalt pavement 12 around a wellhead of an inspection well, so that the guiding rule is positioned above the inspection well; then, a first adjusting bolt 6 is screwed forwards, the first adjusting bolt 6 rotates to drive a high-strength bolt 7 fixed with the first adjusting bolt to rotate synchronously, so that the exposed length of the high-strength bolt 7 on a threaded sleeve 9 is increased, the purpose of lifting the well ring 3 is realized until the height of the well ring 3 at the first adjusting bolt 6 is basically flush with the bottom surface of the guiding ruler, and then the other two adjusting bolts 6 which are distributed in a triangular shape with the first adjusting bolt 6 are screwed forwards in sequence by using the same method by utilizing the principle that three points determine a plane, so that the upper end surface of the well ring 3 is basically flush with the bottom surface of the guiding ruler; finally, the heights of the other adjusting bolts 6 are positively screwed, so that the head of each high-strength bolt 7 is abutted against the bottom surface of the horizontal mounting table 4, and the rough adjustment of the position of the well lid device is completed;
s4: fine adjustment of the position of the well lid device: the placement position of the guiding ruler is changed in multiple directions, the height of the well ring 3 is sequentially checked along the circumferential direction, when a gap still exists between the upper end face of the well ring 3 and the bottom surface of the guiding ruler, the adjusting bolt 6 at the position is positively screwed, the adjusting bolt 6 rotates to drive the high-strength bolt 7 fixed with the adjusting bolt to synchronously rotate, so that the exposed length of the high-strength bolt 7 on the threaded sleeve 9 is increased, the purpose of lifting the well ring 3 is realized, and the height of the well ring 3 at the position is flush with the bottom surface of the guiding ruler; when the upper end surface of the well ring 3 is higher than the bottom surface of the guiding ruler, the adjusting bolt 6 at the position is reversely screwed, the adjusting bolt 6 rotates to drive the high-strength bolt 7 fixed with the adjusting bolt to synchronously rotate, so that the exposed length of the high-strength bolt 7 on the threaded sleeve 9 is reduced, and the purpose of depressing the well ring 3 is realized until the height of the well ring 3 at the position is flush with the bottom surface of the guiding ruler; repeating the process until all parts of the upper end surface of the well ring 3 are flush with the bottom surface of the guiding ruler, namely flush with the height of the asphalt pavement 12 around the wellhead of the inspection well, thereby finishing the fine adjustment of the position of the well cover device;
s5: inspection of the yellow oil layer 11: checking the filling fullness of the grease layer 11 in the corrugated pipe 10, if the filling is not full, supplementing grease into the corrugated pipe 10, and adjusting the length of the corrugated pipe 10 to ensure that the top horizontal installation platform 4 of the corrugated pipe 10 is contacted and the bottom is contacted with the base, and simultaneously ensuring that the grease layer 11 between the corrugated pipe 10 and the high-strength bolt 7 and between the corrugated pipe 10 and the threaded sleeve 9 is full;
s6: repairing the asphalt pavement 12: pouring hot asphalt into cracks of the asphalt pavement 12 around the wellhead of the inspection well, thereby completing the repair of the asphalt pavement 12;
s7: the well lid body 1 resets: well lid body 1 is covered, clearance job site, removes roadblock formula construction and encloses fender and safety warning sign, resumes to lead to the car.
The upper part of the outer side wall of the well ring 3 is attached to the asphalt pavement 12, the inner side wall extends inwards to form an integral body, an annular support table 13 which is tightly attached to the bottom surface of the well lid body 1 is arranged, and the horizontal installation table 4 is integrally arranged at the lower part of the inner side wall of the support table 13; a plurality of anchoring steel bars 14 which are distributed at equal intervals along the circumferential direction and are arranged along the radial direction penetrate through the upper part of the supporting platform 13, and the tail ends of the anchoring steel bars 14 extend into the asphalt pavement 12. The adjusting bolt 6 is a hexagon bolt; a plurality of mounting round holes 15 which are distributed along the circumferential direction at equal intervals are vertically arranged on the horizontal mounting table 4 in a penetrating manner, and the adjusting bolts 6 are arranged in the inner cavities of the mounting round holes 15 in a one-to-one correspondence manner. The bottom end face of the head of the adjusting bolt 6 and the top end face of the head of the high-strength bolt 7 are fixed through welding. The top of the side wall of the corrugated pipe 10 is fixedly connected with the head of the high-strength bolt 7, the bottom of the side wall of the corrugated pipe 10 is fixedly connected with the lower part of the outer side wall of the threaded sleeve 9 through a clamp. The base comprises an upper base 16 and a lower base 17 which are distributed vertically and have the same size, the upper base 16 and the lower base 17 are fixedly connected through a plurality of connecting bolts 18 which are distributed equidistantly along the circumferential direction, and fastening nuts 19 which are positioned in the cushion layer 5 are screwed at the bottoms of the connecting bolts 18. The upper base 16 is vertically provided with a plurality of hexagonal holes 20 which are distributed in a staggered manner with the connecting bolts 18 and are matched with the outer side wall of the threaded sleeve 9 in shape in a penetrating manner, and the bottom of the threaded sleeve 9 is clamped in the inner cavity of the hexagonal holes 20 in a one-to-one corresponding manner; a bottom sealing bolt 21 which is upward in direction and is positioned in the inner cavity of the hexagonal hole 20 is screwed at the bottom of each threaded sleeve 9, the bottom sealing bolt 21 is a round-head bolt with a straight groove at the head, a rubber gasket 22 is clamped between the bottom sealing bolt 21 and the threaded sleeve 9, and the outer side wall of the rubber gasket 22 is attached to the hole wall of the hexagonal hole 20; an oil layer located on the upper side of the rubber gasket 22 is arranged between the outer side wall of the threaded sleeve 9 and the hexagonal hole 20. The outer side wall lower part of the walling crib 3, the outside of the height adjusting mechanism and the outside of the base are jointly sleeved with an antirust protective cylinder 24 which is positioned on the upper side of the well body 2 and embedded in the road bed 23, and the side wall of the antirust protective cylinder 24 is provided with a plurality of drain holes positioned outside the height adjusting mechanism. The well lid body 1 is a round well lid; the well body 2, the walling crib 3, the upper base 16, the lower base 17 and the antirust protective cylinder 24 are all in a circular shape; the well lid body 1, the well ring 3, the upper base 16 and the lower base 17 are all made of cast iron; the rust-proof casing 24 is made of reinforced concrete or cast iron; the cushion layer 5 is made of cement mortar or fine concrete; the threaded sleeve 9 is a high-strength sleeve. In step S2, before maintenance, whether the well lid body 1 sinks is judged by using a test method of the automobile rolling well lid device, and once a bump phenomenon is found when an automobile passes through the well lid body 1 in the test, the well lid device at the bump position is maintained; the manhole ventilation operation in step S2 is performed according to the storm sewer downhole operation safety regulations.
In the specific implementation process, the outer edge of the well lid body 1 is integrally provided with a bearing ring 27 which is vertically opposite to the support platform 13, and the upper surface of the well lid body is integrally provided with a # -shaped rib 28; the size of the head of the high-strength bolt 7 is larger than the aperture of the mounting round hole 15, so that the high-strength bolt 7 can stably support the horizontal mounting table 4; the adjusting bolt 6 is a hexagonal prism long end bolt; when the adjusting bolt 6 is connected with the high-strength bolt 7, the top of the high-strength bolt 7 is drilled and tapped to be connected in a threaded manner so as to solve the problem of center alignment of the high-strength bolt 7 and the threaded bolt, and the circumferential groove formed after the threaded bolt is connected is welded and fixed so as to solve the problem of connection strength of the high-strength bolt and the threaded bolt, and a welding seam is not higher than the circumferential groove during welding; the thickness of the upper base 16 is greater than that of the lower base 17; the upper base 16 is vertically provided with a plurality of connecting bolt mounting holes 25 which are distributed with the hexagonal holes 20 in a staggered manner; the lower base 17 is vertically provided with a plurality of connecting bolt mounting holes 26 of the lower base which are opposite to the connecting bolt mounting holes 25 of the upper base up and down in a through way, and the connecting bolts 18 are arranged in the connecting bolt mounting holes 25 of the upper base and the connecting bolt mounting holes 26 of the lower base; when the well ring 3 is cast, a plurality of circular holes are reserved on the upper part of the side wall of the support table 13, after the construction of the surrounding asphalt pavement 12 is completed, firstly, the height of the upper end surface of the well ring 3 and the surrounding asphalt pavement 12 are adjusted, and then, the anchoring steel bars 14 are correspondingly arranged in the circular holes one by one; before casting the well ring 3, technical parameters such as the diameter, the thickness, the planting grade and the like of the existing well cover body 1 are fully investigated, so that after the base, the height adjusting mechanism and the well ring 3 are installed, the original well cover body 1 can be fully utilized, the construction investment is saved, and the processing procedure of the well cover device is simplified; a water outlet of the drain hole is provided with a reverse filtering layer made of geotextile; the technical principle can also be used for manufacturing the rectangular well lid.
Claims (10)
1. A quick resetting method for a sunk urban road well cover is characterized by comprising the following steps: the method comprises the following steps:
s1: installation of the well lid device: the manhole cover device is installed at an inspection well of an urban road and comprises a manhole cover body (1), a manhole body (2) and an annular manhole ring (3), wherein the manhole cover body (1) is embedded in the upper part of the manhole ring (3), and the upper end surface of the manhole cover body (1) and the upper end surface of the manhole ring (3) are flush with the upper surface of an asphalt pavement (12); an annular horizontal mounting platform (4) is integrally arranged at the lower part of the inner side wall of the walling crib (3); a cushion layer (5) is laid on the upper end face of the well body (2), an annular base is arranged on the upper surface of the cushion layer (5), and the upper part of the base is connected with a horizontal mounting table (4) through a height adjusting mechanism; the height adjusting mechanism comprises a plurality of adjusting bolts (6) which are distributed at equal intervals along the circumferential direction and are vertically arranged, the heads of the adjusting bolts (6) are rotatably arranged on the horizontal mounting table (4) in a penetrating manner, the top ends of the heads extend out of the upper end face of the horizontal mounting table (4), and a distance is reserved between the top ends of the heads and the well lid body (1); a high-strength bolt (7) which is downward and the head of which is butted against the bottom surface of the horizontal mounting table (4) is fixed on the lower side of each adjusting bolt (6), and an inner threaded hole (8) which is in threaded fit with a threaded rod of each adjusting bolt (6) is formed in the top end surface of each high-strength bolt (7); the lower part of each high-strength bolt (7) is provided with a hexagonal prism-shaped threaded sleeve (9) of which the upper part is in threaded connection with the high-strength bolt, and the bottom of the threaded sleeve (9) is clamped on the upper part of the base; a vertical corrugated pipe (10) positioned between the base and the horizontal mounting table (4) is sleeved outside the high-strength bolt (7) and the threaded sleeve (9) together, and an annular butter layer (11) is arranged between the corrugated pipe (10) and the high-strength bolt (7) and between the corrugated pipe (10) and the threaded sleeve (9) together;
s2: preparation before maintenance: after the manhole cover body (1) sinks after a certain time of road operation, firstly, arranging a roadblock type construction enclosure around the manhole cover device to be maintained, then, arranging a safety warning mark, and then, removing the manhole cover body (1) to ventilate the manhole so as to discharge methane in the manhole;
s3: coarse adjustment of the position of the well lid device: firstly, a guiding rule is placed on an asphalt pavement (12) around a wellhead of an inspection well, so that the guiding rule is positioned above the inspection well; then, a first adjusting bolt (6) is screwed forwards, the first adjusting bolt (6) rotates to drive a high-strength bolt (7) fixed with the first adjusting bolt to rotate synchronously, so that the exposed length of the high-strength bolt (7) on a threaded sleeve (9) is increased, the purpose of lifting the walling crib (3) is achieved until the height of the walling crib (3) at the first adjusting bolt (6) is basically flush with the bottom surface of the guiding ruler, then, a plane principle is determined by using three points, and the other two adjusting bolts (6) which are distributed in a triangular shape with the first adjusting bolt (6) are screwed forwards in sequence by using the same method, so that the upper end surface of the walling crib (3) is basically flush with the bottom surface of the guiding ruler; finally, the heights of the other adjusting bolts (6) are positively screwed, so that the head of each high-strength bolt (7) is abutted against the bottom surface of the horizontal mounting table (4), and the rough adjustment of the position of the well lid device is completed;
s4: fine adjustment of the position of the well lid device: the placement position of the guiding ruler is changed in multiple directions, the height of the well ring (3) is sequentially checked along the circumferential direction, when a gap still exists between the upper end face of the well ring (3) and the bottom surface of the guiding ruler, the adjusting bolt (6) at the position is positively screwed, the adjusting bolt (6) rotates to drive the high-strength bolt (7) fixed with the adjusting bolt to synchronously rotate, so that the exposed length of the high-strength bolt (7) on the threaded sleeve (9) is increased, the purpose of lifting the well ring (3) is achieved, and the height of the well ring (3) at the position is flush with the bottom surface of the guiding ruler; when the upper end surface of the well ring (3) is higher than the bottom surface of the backup scale, the adjusting bolt (6) at the position is reversely screwed, the adjusting bolt (6) rotates to drive the high-strength bolt (7) fixed with the adjusting bolt to synchronously rotate, so that the exposed length of the high-strength bolt (7) on the threaded sleeve (9) is reduced, and the purpose of lowering the well ring (3) is realized until the height of the well ring (3) at the position is flush with the bottom surface of the backup scale; repeating the process until all parts of the upper end surface of the well ring (3) are flush with the bottom surface of the guiding ruler, namely flush with the height of an asphalt pavement (12) around the wellhead of the inspection well, thereby finishing the fine adjustment of the position of the well cover device;
s5: examination of the butter layer (11): checking the filling fullness of a grease layer (11) in the corrugated pipe (10), if the filling is not full, supplementing grease into the corrugated pipe (10), and adjusting the length of the corrugated pipe (10) to ensure that a top horizontal mounting platform (4) of the corrugated pipe (10) is contacted, the bottom of the corrugated pipe is contacted with a base, and simultaneously, the grease layers (11) between the corrugated pipe (10) and the high-strength bolt (7) and between the corrugated pipe (10) and the threaded sleeve (9) are filled fully;
s6: repairing the asphalt pavement (12): pouring hot asphalt into cracks of the asphalt pavement (12) around the wellhead of the inspection well, thereby completing the repair of the asphalt pavement (12);
s7: the well lid body (1) resets: well lid body (1) is covered, clearance job site, removes roadblock formula construction and encloses fender and safety warning sign, resumes to lead to the car.
2. The method for quickly resetting the manhole cover of the urban road after sinking according to claim 1, which is characterized in that: the upper part of the outer side wall of the well ring (3) is attached to the asphalt pavement (12), an annular supporting table (13) closely attached to the bottom surface of the well cover body (1) is integrally arranged in a manner that the inner side wall extends inwards, and the horizontal mounting table (4) is integrally arranged at the lower part of the inner side wall of the supporting table (13); the upper portion of brace table (13) is worn to be equipped with a plurality of along the equidistant distribution of circumference and along radial arrangement's anchor reinforcing bar (14), and the afterbody of anchor reinforcing bar (14) stretches into the inside of bituminous paving (12).
3. The method for quickly resetting the manhole cover of the urban road after sinking according to claim 1, which is characterized in that: the adjusting bolt (6) is a hexagon bolt; a plurality of mounting round holes (15) distributed along the circumferential direction at equal intervals are vertically arranged on the horizontal mounting table (4) in a penetrating mode, and the adjusting bolts (6) are arranged in the inner cavities of the mounting round holes (15) in a one-to-one correspondence mode.
4. The method for quickly resetting the manhole cover of the urban road after sinking according to claim 1, which is characterized in that: the bottom end face of the head of the adjusting bolt (6) is fixed with the top end face of the head of the high-strength bolt (7) through welding.
5. The method for quickly resetting the manhole cover of the urban road after sinking according to claim 1, which is characterized in that: the top of the side wall of the corrugated pipe (10) is fixedly connected with the head of the high-strength bolt (7), the bottom of the side wall of the corrugated pipe (10) is fixedly connected with the lower part of the outer side wall of the threaded sleeve (9) through a clamp.
6. The method for quickly resetting the manhole cover of the urban road after sinking according to claim 1, which is characterized in that: the base comprises an upper base (16) and a lower base (17) which are distributed from top to bottom and have the same size, the upper base (16) and the lower base (17) are fixedly connected through a plurality of connecting bolts (18) which are distributed at equal intervals along the circumferential direction, and fastening nuts (19) which are positioned in the cushion layer (5) are screwed at the bottoms of the connecting bolts (18).
7. The method for quickly resetting the manhole cover of the urban road after sinking according to claim 6, wherein the method comprises the following steps: the upper base (16) is vertically provided with a plurality of hexagonal holes (20) which are distributed in a staggered manner with the connecting bolts (18) and matched with the outer side wall of the threaded sleeve (9) in shape in a penetrating manner, and the bottoms of the threaded sleeves (9) are correspondingly clamped in the inner cavities of the hexagonal holes (20) one by one; a bottom sealing bolt (21) which is upward in direction and is positioned in the inner cavity of the hexagonal hole (20) is screwed at the bottom of each threaded sleeve (9), the bottom sealing bolt (21) is a round-head bolt with a straight groove at the head, a rubber gasket (22) is clamped between the bottom sealing bolt (21) and the threaded sleeve (9), and the outer side wall of the rubber gasket (22) is attached to the hole wall of the hexagonal hole (20); an oil layer positioned on the upper side of the rubber gasket (22) is arranged between the outer side wall of the threaded sleeve (9) and the hexagonal hole (20).
8. The method for quickly resetting the manhole cover of the urban road after sinking according to claim 1, which is characterized in that: the outer side wall lower part of the well ring (3), the outside of the height adjusting mechanism and the outside of the base are jointly sleeved with an antirust protective cylinder (24) which is positioned on the upper side of the well body (2) and embedded in the road bed (23), and the side wall of the antirust protective cylinder (24) is provided with a plurality of drain holes which are positioned outside the height adjusting mechanism.
9. The method for quickly resetting the manhole cover of the urban road after sinking according to claim 1, which is characterized in that: the well lid body (1) is a round well lid; the well body (2), the well ring (3), the upper base (16), the lower base (17) and the antirust protective cylinder (24) are all in a circular shape; the well lid body (1), the well ring (3), the upper base (16) and the lower base (17) are all made of cast iron; the rust-proof casing (24) is made of reinforced concrete or cast iron; the cushion layer (5) is made of cement mortar or fine concrete; the threaded sleeve (9) is a high-strength sleeve.
10. The method for quickly resetting the manhole cover of the urban road after sinking according to claim 1, which is characterized in that: in the step S2, before maintenance, whether the well lid body (1) sinks is judged by using a test method of rolling the well lid device by the automobile, and once the automobile passes through the well lid body (1) in the test and has a bumping phenomenon, the well lid device at a bumping position is maintained; the manhole ventilation operation in step S2 is performed according to the storm sewer downhole operation safety regulations.
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| CN202110160401.3A CN112761194A (en) | 2021-02-05 | 2021-02-05 | Rapid resetting method for urban road manhole cover after sinking |
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| CN202110160401.3A CN112761194A (en) | 2021-02-05 | 2021-02-05 | Rapid resetting method for urban road manhole cover after sinking |
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| CN211341849U (en) * | 2019-12-10 | 2020-08-25 | 宋元哲 | Rust prevention device for external leakage reinforcing steel bars of embedded parts of constructional engineering |
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|---|---|---|---|---|
| WO2006082569A1 (en) * | 2005-02-07 | 2006-08-10 | Szolnoky Laszlo | Adjustable haevy-duty manhole head |
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