CN117344836A - Inspection well construction method - Google Patents
Inspection well construction method Download PDFInfo
- Publication number
- CN117344836A CN117344836A CN202311324480.2A CN202311324480A CN117344836A CN 117344836 A CN117344836 A CN 117344836A CN 202311324480 A CN202311324480 A CN 202311324480A CN 117344836 A CN117344836 A CN 117344836A
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- Prior art keywords
- inspection well
- shield machine
- steel sleeve
- machine
- shell
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000007689 inspection Methods 0.000 title claims abstract description 73
- 238000010276 construction Methods 0.000 title claims abstract description 57
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 60
- 239000010959 steel Substances 0.000 claims abstract description 60
- 239000002689 soil Substances 0.000 claims abstract description 13
- 238000003466 welding Methods 0.000 claims abstract description 12
- 230000005641 tunneling Effects 0.000 claims abstract description 10
- 230000000903 blocking effect Effects 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 11
- 238000005259 measurement Methods 0.000 claims description 5
- 239000002002 slurry Substances 0.000 claims description 5
- 238000005507 spraying Methods 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 230000002787 reinforcement Effects 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention belongs to the technical field of construction of constructional engineering, and discloses a construction method of an inspection well, which comprises the following steps: measuring and lofting the preset position of the inspection well, and determining the stop position of the shield tunneling machine according to the preset position of the inspection well; cutting a pipeline through a shield machine, pushing the shield machine to a preset position of an inspection well, stopping the machine, dismantling equipment inside the shield machine, and then constructing a blocking wall to block and seal a shell of the shield machine; positioning the ground of a pipe shaking machine, rotating and sinking the steel sleeve above the shell of the shield machine through the pipe shaking machine, and welding the steel sleeve with the shell of the shield machine; removing soil in the steel sleeve, and cutting holes at the joint of the steel sleeve and the shell of the shield machine to enable the steel sleeve to be communicated with the inside of the shell of the shield machine; and constructing an inspection well in the steel sleeve. The inspection well construction method provided by the invention does not need to excavate a foundation pit in a large area, realizes the construction of the inspection well in an environment with limited field width, and has small disturbance to the periphery.
Description
Technical Field
The invention relates to the technical field of building engineering construction, in particular to an inspection well construction method.
Background
The inspection well is arranged for the maintenance of power supply, water drainage, pollution discharge, communication, cable television, gas pipes, street lamp lines and the like of urban underground infrastructure, and is convenient to install. The device is generally arranged at the junction of pipelines, at the turning position, at the position of pipe diameter or gradient change and at certain intervals on the straight pipe section, so that the device is convenient for periodically checking auxiliary structures.
The inspection well construction in the drainage engineering is that after the drainage pipeline construction is completed, the built shield or pipe jacking working well is upwards constructed to the ground and connected with the peripheral municipal drainage pipelines, and the inspection well construction is used as a channel for water passing after the pipeline construction and maintenance personnel to go into the well for inspection after the water passing. The construction process comprises the steps of firstly excavating a foundation pit as a working well, after equipment such as a shield and the like finishes pipeline construction, hanging the equipment such as the shield and the like out of the working well, then starting from the bottom of the foundation pit, reforming a construction concrete structure layer by layer up until reaching the ground and reserving a shaft, and finally connecting the shaft with surrounding municipal pipelines to realize the connection of the underground pipelines and the ground for water. However, because the inspection well construction environment in the drainage engineering is generally located on the municipal road and is close to the history protection building or the important pipeline, the construction site is limited, so that the construction site cannot be excavated in a large area, the construction process cannot meet the construction of the inspection well, and in addition, the excavation of the foundation pit in a large area has larger disturbance to the periphery and is easy to cause adverse effects on the periphery building.
Therefore, there is a need for an inspection well construction method to solve the above problems.
Disclosure of Invention
The invention aims to provide an inspection well construction method, which aims to solve the problems that in the prior art, a large-area foundation pit is required to be excavated in the inspection well construction, the inspection well construction is performed in an environment with limited field width, and the peripheral disturbance is large.
To achieve the purpose, the invention adopts the following technical scheme:
the inspection well construction method comprises the following steps:
step S1: measuring and lofting a preset position of an inspection well, and determining a stop position of a shield tunneling machine according to the preset position of the inspection well;
step S2: cutting a pipeline through the shield machine, pushing the shield machine to a preset position of the inspection well, stopping the machine, dismantling equipment in the shield machine, and then constructing a blocking wall to block and seal a shell of the shield machine;
step S3: positioning the ground of a pipe shaking machine, rotating and sinking a steel sleeve above the shell of the shield machine through the pipe shaking machine, and welding the steel sleeve with the shell of the shield machine;
step S4: removing soil in the steel sleeve, and cutting holes at the joint of the steel sleeve and the shell of the shield machine to enable the steel sleeve to be communicated with the inside of the shell of the shield machine;
step S5: and building the inspection well in the steel sleeve.
Preferably, in step S1, after determining the stop position of the shield tunneling machine, the MJS method pile is constructed at the predetermined position of the manhole for reinforcement.
Preferably, after the reinforcement of the preset position of the inspection well is completed through the MJS construction method pile, 180-degree swing spraying construction is adopted to the inner side of the reinforcement range of the preset position of the inspection well.
Preferably, in step S2, after the shield tunneling machine is advanced to the predetermined position, measurement and lofting is performed to check whether the coordinates of the shield tunneling machine are consistent with the coordinates of the predetermined position of the manhole.
Preferably, in step S3, after the steel sleeve is welded to the casing of the shield machine, a gap between the steel sleeve and the casing of the shield machine is sealed by welding a steel plate.
Preferably, in step S4, after the steel sleeve and the shield machine casing are penetrated, concrete slurry is poured into the shield machine casing.
Preferably, after the pouring of concrete into the shell of the shield machine is completed, a bearing platform is constructed at the joint of the pipeline and the blocking wall.
Preferably, the steel sleeve comprises a plurality of sections of sleeves, the ends of the sections of sleeves are provided with saw-tooth structures, two adjacent sleeves can be connected through the saw-tooth structures, and the saw-tooth structures of the two adjacent sleeves are connected through welding.
Preferably, the depth of the weld between the serrated structures of two adjacent sleeves is not less than 14mm.
Preferably, the inspection well comprises a well body and a well cover, wherein the well body is arranged in the steel sleeve, the axial direction of the well body is in a vertical direction, and the well cover is connected to the upper end of the well body.
The invention has the beneficial effects that:
according to the inspection well construction method provided by the invention, the preset position of the inspection well is subjected to measurement lofting, and the stop position of the shield machine is determined according to the preset position, so that the access position of the inspection well and the pipeline is determined after the pipeline is cut by the shield machine; stopping the machine after the shield machine reaches a preset position, dismantling equipment in the shield machine, and only leaving the shell of the shield machine at the preset position so as to leave a space for construction of an inspection well; the shell of the shield machine is plugged and sealed through the construction plugging wall, so that the situation that water enters the shell of the shield machine and erodes soil in the shell of the shield machine to cause uneven settlement of the ground when water is discharged through a pipeline in the later period is prevented; the steel sleeve is rotated and sunk above the shell of the shield machine through the pipe shaking machine, and the steel sleeve is welded with the shell of the shield machine to be used as an outer mold of the inspection well supporting structure and the inspection well pouring stage; through clearing the soil body in the steel sleeve, cutting holes at the joint of the steel sleeve and the shell of the shield machine, enabling the steel sleeve to be communicated with the inside of the shell of the shield machine, and constructing an inspection well in the steel sleeve, so that the construction of the inspection well can be realized under the environment with limited site width without large-area excavation of a foundation pit, and the peripheral disturbance is small.
Drawings
FIG. 1 is a schematic flow chart of a method for constructing an inspection well according to an embodiment of the present invention;
fig. 2 is a schematic diagram of the overall structure of an inspection well according to an embodiment of the present invention.
In the figure:
1. an inspection well; 11. a well bore; 12. a well cover;
2. a shield machine; 3. a pipe; 4. a blocking wall; 5. a tube shaking machine; 6. a steel sleeve; 7. and (5) a bearing platform.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
As shown in fig. 1 and 2, the present embodiment provides a method for constructing an inspection well, including the following steps:
step S1: and measuring and lofting the preset position of the inspection well 1, and determining the stop position of the shield machine 2 according to the preset position of the inspection well 1.
Step S2: the pipeline 3 is cut through the shield machine 2, the shield machine 2 is pushed to the preset position of the inspection well 1 and then stopped, equipment inside the shield machine 2 is removed, and then the shell of the shield machine 2 is plugged and sealed by the construction plugging wall 4.
Step S3: the pipe shaking machine 5 is used for positioning the ground, the steel sleeve 6 is rotated and sunk above the shell of the shield machine 2 through the pipe shaking machine 5, and the steel sleeve 6 is welded with the shell of the shield machine 2.
Step S4: soil in the steel sleeve 6 is removed, and holes are cut at the joint of the steel sleeve 6 and the shell of the shield machine 2, so that the steel sleeve 6 is communicated with the inside of the shell of the shield machine 2.
Step S5: an inspection well 1 is built in a steel casing 6.
According to the inspection well construction method provided by the embodiment, the preset position of the inspection well 1 is subjected to measurement lofting, and the stop position of the shield machine 2 is determined according to the preset position, so that after the pipeline 3 is cut out by the shield machine 2, the access position of the inspection well 1 and the pipeline 3 is determined; stopping the machine after the shield machine 2 reaches a preset position, dismantling equipment in the shield machine 2, and only leaving the shell of the shield machine 2 at the preset position so as to leave a space for construction of the inspection well 1; the shell of the shield machine 2 is plugged and sealed through the construction plugging wall 4, so that when water is drained through the pipeline 3 in the later period, the water enters the shell of the shield machine 2 and erodes soil in the shell of the shield machine 2, and uneven settlement of the ground is caused; the steel sleeve 6 is rotated and sunk above the shell of the shield machine 2 through the pipe shaking machine 5, and the steel sleeve 6 is welded with the shell of the shield machine 2 to be used as an outer mold for the support structure of the inspection well 1 and the pouring stage of the inspection well 1; through clearing the soil body in the steel sleeve 6, and cutting holes at the joint of the steel sleeve 6 and the shell of the shield machine 2, the steel sleeve 6 is communicated with the inside of the shell of the shield machine 2, and the inspection well 1 is built in the steel sleeve 6, so that the construction of the inspection well 1 can be realized under the environment with limited field width without large-area excavation of a foundation pit, and the peripheral disturbance is small.
Optionally, in step S1, after determining the stopping position of the shield tunneling machine 2, the MJS method pile is constructed at the predetermined position of the manhole 1. It can be appreciated that, because the foundation needs to be treated in the construction process, the soil body is extruded and raised due to the excessively high pressure in the ground during the foundation treatment, adverse effects on the surrounding environment and the building are caused, and the characteristics of forced pressure release and adjustable slurry injection angle of the MJS construction method can reduce the extrusion and the raised of the soil body due to the excessively high pressure in the ground during the foundation treatment. Further, in this embodiment, during construction of the MJS pile, in order to form an effective support for the tunneling device (the shield machine 2), the reinforcing range needs to ensure that the cutterhead of the entire shield machine 2 is wrapped. Specifically, the MJS construction site is a well-known technique to those skilled in the art, and will not be described in detail herein.
Optionally, after the reinforcement of the predetermined position of the manhole 1 is completed by the MJS pile, a 180 ° swing-spray construction is adopted to the inner side of the reinforcement range of the predetermined position of the manhole 1. It can be appreciated that the construction of swing spraying to 180 degrees (half amplitude) on the inner side of the reinforcing range is adopted on the basis of the completion of the MJS construction method pile, and the spraying direction is ensured to be selected to spray to the side far away from the protection building, so that the disturbance to the surrounding environment is reduced, and the effective bearing to the tunneling equipment (the shield machine 2) is further enhanced.
Optionally, in step S2, after the shield machine 2 is advanced to the predetermined position of the manhole 1, measurement and lofting is performed to check whether the coordinates of the shield machine 2 are consistent with the coordinates of the predetermined position of the manhole 1. Thereby, the accuracy of the sinking position of the steel sleeve 6 can be ensured, and the end part of the steel sleeve can accurately sink above the shell of the shield machine 2.
Optionally, in step S3, after the steel sleeve 6 is welded to the casing of the shield machine 2, a gap between the steel sleeve 6 and the casing of the shield machine 2 is sealed by welding a steel plate. It can be understood that, because the outer shell of the shield machine 2 is an arc surface, a part of gaps are reserved when the steel sleeve 6 sinks to the top of the outer shell of the shield machine 2, and after a small amount of residual soil is removed by adopting manual excavation, a welded steel plate is added between the inner side of the steel sleeve 6 and the outer shell of the shield machine 2 to fill the gaps for plugging. Therefore, the site width only needs to meet the equipment width of the pipe shaking machine 5 during construction, and thus the site construction requirement can be met under the environment of limited site width.
Optionally, in step S4, after the steel sleeve 6 is penetrated through the inside of the casing of the shield machine 2, concrete slurry is poured into the casing of the shield machine 2. On the one hand, the cavity in the shell of the shield machine 2 can be prevented from being formed by pouring concrete slurry into the shell of the shield machine 2, so that uneven settlement of the ground is caused, on the other hand, after water is introduced into the pipeline 3, the water is prevented from penetrating into soil outside the pipeline 3, so that soil instability is caused, and adverse effects are caused on structures around the pipeline 3.
Optionally, as shown in fig. 2, after pouring concrete into the casing of the shield machine 2 is completed, a bearing platform 7 is constructed at the joint of the pipeline 3 and the blocking wall 4. It will be appreciated that in this embodiment, to prevent ground water from falling into the pipeline 3 through the manhole 1, it will impact the floor of the manhole 1, thereby protecting the pipeline 3 by providing a platform 7 against the flushing of the water. Specifically, the top surface of the bearing platform 7 in this embodiment is arc-shaped, one end is connected with the blocking wall 4, and the other end is connected with the bottom of the pipeline 3, so that after water falls onto the bearing platform 7, the water flows into the pipeline 3 through the arc surface.
Optionally, the steel sleeve 6 comprises a plurality of sleeves, the ends of the plurality of sleeves are provided with saw-tooth structures, two adjacent sleeves can be connected through the saw-tooth structures, and the saw-tooth structures of the two adjacent sleeves are connected through welding. In the embodiment, a 10cm annular saw-tooth structure is processed at the end of a sleeve with the section width of 30cm, the single section length of the sleeve is 2m, and the upper and lower welding is performed in a 45-degree groove welding mode, so that the adjacent sleeves can be firmly connected. Of course, in other embodiments, the serrated structure of the sleeve end may be sized and welded in other ways, such as double sided welding. Specifically, the size of the serrated structure of the sleeve end and the welding form are not particularly limited herein, as long as the firm connection between the adjacent sleeves can be satisfied.
Optionally, the depth of the weld between the serrated structures of two adjacent sleeves is not less than 14mm to meet the strength of the connection. In other embodiments, the depth of the weld may be of other dimensions, so long as the weld strength is ensured, and the specific depth of the weld is not specifically limited herein.
Optionally, the inspection well 1 comprises a well body 11 and a well cover 12, the well body 11 is arranged in the steel casing 6, the axial direction of the well body 11 is vertical, and the well cover 12 is connected to the upper end of the well body 11.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (10)
1. The inspection well construction method is characterized by comprising the following steps of:
step S1: measuring and lofting the preset position of the inspection well (1), and determining the stop position of the shield tunneling machine (2) according to the preset position of the inspection well (1);
step S2: the method comprises the steps of cutting a pipeline (3) through a shield machine (2), pushing the shield machine (2) to a preset position of an inspection well (1), stopping the machine, dismantling equipment inside the shield machine (2), and then constructing a blocking wall (4) to block and seal a shell of the shield machine (2);
step S3: the pipe shaking machine (5) is used for positioning the ground, the steel sleeve (6) is rotationally sunk above the shell of the shield machine (2) through the pipe shaking machine (5), and the steel sleeve (6) is welded with the shell of the shield machine (2);
step S4: removing soil in the steel sleeve (6), and cutting holes at the joint of the steel sleeve (6) and the shell of the shield machine (2) to enable the steel sleeve (6) to be communicated with the inside of the shell of the shield machine (2);
step S5: and building the inspection well (1) in the steel sleeve (6).
2. The inspection well construction method according to claim 1, wherein in step S1, after determining the stop position of the shield tunneling machine (2), the construction of the MJS method pile at the predetermined position of the inspection well (1) is reinforced.
3. The inspection well construction method according to claim 2, characterized in that 180 ° swing spraying construction is adopted to the inner side of the predetermined position reinforcing range of the inspection well (1) after the predetermined position of the inspection well (1) is reinforced by the MJS method pile.
4. The inspection well construction method according to claim 1, wherein in step S2, after the shield machine (2) is advanced to a predetermined position of the inspection well (1), measurement lofting is performed to check whether or not coordinates of the shield machine (2) coincide with predetermined position coordinates of the inspection well (1).
5. The inspection well construction method according to claim 1, characterized in that in step S3, after the steel sleeve (6) is welded to the housing of the shield machine (2), a gap between the steel sleeve (6) and the housing of the shield machine (2) is sealed by steel plate welding.
6. The inspection well construction method according to claim 1, wherein in step S4, after the steel sleeve (6) is penetrated through the inside of the housing of the shield machine (2), concrete slurry is poured into the housing of the shield machine (2).
7. The inspection well construction method according to claim 6, characterized in that after the completion of pouring concrete into the housing of the shield machine (2), a bearing platform (7) is constructed at the joint of the pipeline (3) and the blocking wall (4).
8. The inspection well construction method according to claim 1, characterized in that the steel sleeve (6) comprises a plurality of sleeves, the ends of the sleeves are provided with saw-tooth structures, two adjacent sleeves can be connected through the saw-tooth structures, and the saw-tooth structures of two adjacent sleeves are connected through welding.
9. The inspection well construction method according to claim 8, wherein a depth of a weld between the serration structures of adjacent two of the sleeves is not less than 14mm.
10. The inspection well (1) construction method according to any one of claims 1 to 9, wherein the inspection well (1) comprises a well body (11) and a well cover (12), the well body (11) is arranged in the steel casing (6), the axial direction of the well body (11) is vertical, and the well cover (12) is connected to the upper end of the well body (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311324480.2A CN117344836A (en) | 2023-10-13 | 2023-10-13 | Inspection well construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311324480.2A CN117344836A (en) | 2023-10-13 | 2023-10-13 | Inspection well construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117344836A true CN117344836A (en) | 2024-01-05 |
Family
ID=89366284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311324480.2A Pending CN117344836A (en) | 2023-10-13 | 2023-10-13 | Inspection well construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117344836A (en) |
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2023
- 2023-10-13 CN CN202311324480.2A patent/CN117344836A/en active Pending
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