CN113640895A - Detection method for urban underground pipeline - Google Patents
Detection method for urban underground pipeline Download PDFInfo
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- CN113640895A CN113640895A CN202110755884.1A CN202110755884A CN113640895A CN 113640895 A CN113640895 A CN 113640895A CN 202110755884 A CN202110755884 A CN 202110755884A CN 113640895 A CN113640895 A CN 113640895A
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- 238000001514 detection method Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 55
- 238000010276 construction Methods 0.000 claims abstract description 34
- 238000009412 basement excavation Methods 0.000 claims abstract description 30
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 238000009826 distribution Methods 0.000 claims abstract description 9
- 238000009933 burial Methods 0.000 claims abstract description 7
- 238000012545 processing Methods 0.000 claims abstract description 7
- 230000005674 electromagnetic induction Effects 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 230000001066 destructive effect Effects 0.000 claims abstract description 5
- 238000005553 drilling Methods 0.000 claims description 13
- 238000001556 precipitation Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000011065 in-situ storage Methods 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 239000013589 supplement Substances 0.000 abstract description 2
- 230000000295 complement effect Effects 0.000 description 4
- 238000011835 investigation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
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Abstract
The invention provides a detection method for urban underground pipelines, which comprises the following steps: the method comprises the following steps: leveling and cleaning a construction site; step two: lofting and determining an excavation boundary; step three: excavating a first-stage exploration groove along an excavation boundary; step four: excavating a second-stage exploration groove and a third-stage exploration groove, and determining the direction and the buried depth of a pipeline; step five: determining and implementing a processing scheme by contacting a construction unit and a pipeline property unit; step six: and 5, performing excavation construction according to the construction scheme determined in the step five. The method can accurately detect and determine the trend, the burial depth and the distribution condition of the urban underground pipelines, has the advantages of simplicity, strong practicability, high operability and high precision, is suitable for pipeline detection under the condition of a narrow municipal engineering field, avoids the destructive excavation of the current pipelines in the municipal construction process, generates safe production accidents and causes unnecessary economic loss, and simultaneously takes the traditional electromagnetic induction method and the geological radar detection method as the detection mode of auxiliary supplement, thereby improving the pipeline detection precision.
Description
Technical Field
The invention belongs to the technical field of pipeline detection, and particularly relates to a detection method for urban underground pipelines.
Background
Municipal works comprise the construction of urban rail works, and the investigation of the surrounding environment before the construction is very important, especially the investigation of the pipelines in the early stage, the accurate condition of the investigation not only influences the realization of the engineering design target, but also determines the safety problem of the pipelines during the construction. The traditional electromagnetic induction method and the geological radar method cannot accurately draw conclusions about the problems of pipeline buried depth, pipeline plane intersection and the like, and meanwhile, the two methods have strict requirements on pipeline materials and cannot effectively detect common concrete prefabricated pipes and PVC corrugated pipes in the market.
Disclosure of Invention
The invention provides a detection method for urban underground pipelines, which can accurately detect the direction and the buried depth of a pipeline at a position, is simple, strong in practicability, high in operability and high in precision, is suitable for pipeline detection under the condition of a narrow municipal engineering field, and avoids the problems that the existing pipeline is destructively excavated in the municipal construction process, the safety production accident is generated and the unnecessary economic loss is caused.
The technical scheme of the invention is as follows: a detection method for urban underground pipelines comprises the following steps:
the method comprises the following steps: leveling and cleaning a construction site, cleaning sundries on the site, and leveling uneven ground by using tools such as shovels and the like;
step two: lofting, determining an excavation boundary, lofting on a well-arranged field, determining the boundary to be excavated, and marking the excavation boundary by drawing lines or paying off lines;
step three: excavating a first-stage exploration groove along an excavation boundary, wherein the size of the first-stage exploration groove is convenient for exploring by a Luoyang shovel, the bottom of the exploration groove is explored by a Luoyang shovel drilling method or other tools capable of penetrating into an exploration hole, pipelines in the influence range of the precipitation well are comprehensively explored before drilling, care must be taken during excavation, a shovel is used for lightly excavating, sharp tools such as a pickaxe, a two-tooth rake and the like are not needed for excavating, and when the soil quality is found to be changed, a wood drill is used for cleaning a covering object so as to ensure that underground pipelines are not damaged by the exploration groove;
step four: excavating a second-stage exploration groove and a third-stage exploration groove, determining the direction and the buried depth of the pipeline, after the pipeline is explored in the third step, enlarging the size of the exploration groove in situ at the exploration position, excavating the second-stage exploration groove, initially determining the direction of the pipeline, then excavating the third-stage exploration groove along the direction of primary exploration, and examining the distribution condition and the position of the pipeline in the construction range;
step five: determining and implementing a processing scheme by contacting a construction unit and a pipeline property unit, and after determining the specific distribution condition, position, trend and burial depth of the pipeline in the steps, jointly determining and implementing the processing scheme by contacting the construction unit and the pipeline property unit to ensure that subsequent construction cannot cause destructive excavation to the existing pipeline, generate safe production accidents and cause unnecessary economic loss;
step six: and 5, performing excavation construction according to the construction scheme determined in the step five.
Further, the width of the bottom of the groove in the third step is 1m, the probing by a Luoyang shovel is convenient, the depth of the probing groove is not less than 2m in principle, the probing groove is deepened as appropriate in a complex zone, the width of the probing groove is not less than 20cm on each side of the width of the enclosure structure, the probing groove bottom is probed by a Luoyang shovel drilling method or other tools capable of penetrating into the probing hole, the total probing depth is not less than 6m from the probing groove bottom, pipelines in the influence range of the precipitation well are comprehensively probed before drilling, and the probing depth is not less than 8m from the original ground.
Furthermore, when the pipeline is probed by adopting the luoyang shovel drilling method in the third step, a plurality of quincunx probing holes are arranged in the first-stage probing groove, the depth of each probing hole is 8m from the ground line, the depth of each probing hole is 6m from the groove bottom line of the first-stage probing groove, and if a sand layer is encountered, other means or methods are adopted for supplementary probing.
Furthermore, the other means or methods for complementary detection are a traditional electromagnetic induction method and a geological radar method, and the method is used as an auxiliary complementary detection mode, so that 'more detection is achieved, omission is avoided', the accuracy of pipeline detection is ensured, and construction accidents are avoided.
Furthermore, a supporting measure is adopted in the process of exploring the groove and excavating in the third stage and the first stage, and when the depth of the excavating exploring groove reaches 2m, the inner supporting rods arranged in a quincunx shape are arranged on the whole opened side slope.
Furthermore, in the process of taking the supporting measures, the method also comprises the step of adopting a template to match with the inner supporting rod to serve as a slope support so as to ensure the stability of the slope.
The invention has the advantages that: the pipeline detection method provided by the invention can accurately detect and determine the trend and the burial depth of the urban underground pipeline, completely detect the pipeline distribution condition within 8m underground, has the advantages of simple detection method, strong practicability, high operability and high precision, adopts Luoyang shovel drilling detection to be suitable for pipeline detection under the narrow condition of a municipal engineering field, avoids destructive excavation of the pipeline in the current situation in the municipal construction process, generates safe production accidents and causes unnecessary economic loss, and simultaneously takes the traditional electromagnetic induction method and the geological radar method as auxiliary supplement detection modes, realizes 'more detection in the Ningke and unreleable', and further improves the precision of pipeline detection.
Drawings
FIG. 1 is a flow chart of a method of the present invention for the detection of urban underground pipelines;
FIG. 2 is a hole-probing-surface layout of Luoyang shovel jack probing for a method of probing urban underground pipelines according to the present invention;
FIG. 3 is a longitudinal cross-sectional view of a probe hole for Luoyang shovel jack probing in accordance with a method of probing an urban underground pipeline of the present invention;
FIG. 4 is a view illustrating a trench excavation sequence according to a method for detecting an underground pipeline in a city according to the present invention;
fig. 5 is a view of a probe slot support for a method of probing a municipal underground pipeline according to the present invention.
Detailed Description
The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which a person skilled in the art can, without any creative effort, fully implement the present invention.
Referring to fig. 1, a flow chart of a method for detecting an urban underground pipeline according to the present invention is used for detecting the strike and burial depth of the urban underground pipeline to fully detect the branch situation of the pipeline within 8m underground, and in this embodiment, the method for detecting the urban underground pipeline includes:
the method comprises the following steps: leveling and cleaning a construction site, cleaning sundries on the site, and leveling uneven ground by using tools such as shovels and the like;
step two: lofting, determining an excavation boundary, lofting on a well-arranged field, determining the boundary to be excavated, and marking the excavation boundary by drawing lines or paying off lines;
step three: excavating a first-stage exploration groove 3 along an excavation boundary, wherein the width of the bottom of the groove is 1m generally, the exploration of a Luoyang shovel is facilitated, the depth of the exploration groove is not less than 2m in principle, the exploration groove is deepened as appropriate in a complex area, the width of the exploration groove is not less than 20cm on each side of the width of the enclosure structure, the exploration of the bottom of the exploration groove is carried out by adopting a Luoyang shovel drilling method or other tools capable of exploring deeply into an exploration hole, the exploration total depth is not less than 6m (without the exploration groove), pipelines 2 in the influence range of the precipitation well are comprehensively explored before drilling, the exploration depth is not less than 8m from the original ground, care is needed during excavation, a shovel is used for lightly excavating, sharp tools such as a pick and a two-tooth rake are not needed for excavating, and when the soil quality is found to be changed, wood borers are used for cleaning up the covering materials so as to ensure that the exploration groove does not damage the underground pipelines;
step four: excavating a second-stage exploration groove and a third-stage exploration groove, determining the direction and the burial depth of a pipeline, after the pipeline 2 is explored in the third step, in-situ enlarging the size of the exploration groove at the exploration position, excavating a second-stage exploration groove 4, primarily determining the direction of the pipeline 2, then excavating a third-stage exploration groove 5 along the primary exploration direction, and checking the distribution and the position of the pipeline 2 in the construction range, wherein the excavation sequence of the first-stage exploration groove 3, the second-stage exploration groove 4 and the third-stage exploration groove 5 is given in fig. 4;
step five: determining and implementing a processing scheme by contacting a construction unit and a pipeline property unit, and after determining the specific distribution condition, position, trend and burial depth of the pipeline 2 in the steps, jointly determining and implementing the processing scheme by contacting the construction unit and the pipeline property unit to ensure that the subsequent construction cannot cause destructive excavation to the existing pipeline 2, generate safe production accidents and cause unnecessary economic loss;
step six: and 5, performing excavation construction according to the construction scheme determined in the step five.
When the pipeline 2 is probed by adopting the luoyang shovel drilling method in the third step, a plurality of quincunx-shaped arranged probing holes 1 are arranged in the first-stage probing groove 3, the diameter of each probing hole 1 is not less than 15cm, the clear distance (from edge to edge) between every two adjacent probing holes 1 is not more than 10cm, referring to fig. 2-3, the method is a distribution diagram of the probing holes 1 in a specific embodiment, the diameter of each probing hole 1 is 15cm, the clear distance from edge to edge of each adjacent probing hole 1 is 10cm, the distance from the outermost probing hole 1 to the outermost side is 10cm, the distance between the circle centers of two adjacent probing holes 1 on the same level is 50cm, the depth of each probing hole 1 to the ground line is 8m, the distance to the groove bottom line of the first-stage probing groove 3 is 6m, the use of the luoyang shovel is simpler than the traditional method, the cost is low, the operation is more convenient, but the probing task can not be completed when a sand layer is possibly encountered, other necessary means or methods can be adopted for repairing, the other necessary means or methods for complementary detection are the traditional electromagnetic induction method and the geological radar method, and the method is adopted as an auxiliary complementary detection method, so that 'more detection is achieved, omission is avoided', the accuracy of the detection of the pipeline 2 is ensured, and construction accidents are avoided.
In the third step, support measures should be taken in the excavation process of the first-stage exploration groove 3, when the excavation exploration groove is as deep as 2m, 8 × 8cm square timber should be adopted to arrange the inner supporting rods 6 according to a 1 × 1m quincunx pattern, referring to the arrangement mode of the graph 5, the distance between every two adjacent inner supporting rods 6 is 1m, the distance between every two adjacent inner supporting rods is 0.5m, and templates are adopted to support in a matched mode if necessary to ensure the stability of the side slope.
While the preferred embodiments of the invention have been described, it is to be understood that the invention is not limited to the precise embodiments described, and that equipment and structures not described in detail are understood to be practiced as commonly known in the art; any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention by those skilled in the art can be made without departing from the technical scope of the present invention, and still fall within the protection scope of the technical solution of the present invention.
Claims (6)
1. A detection method for urban underground pipelines is characterized by comprising the following steps:
the method comprises the following steps: leveling and cleaning a construction site, cleaning sundries on the site, and leveling uneven ground by using tools such as shovels and the like;
step two: lofting, determining an excavation boundary, lofting on a well-arranged field, determining the boundary to be excavated, and marking the excavation boundary by drawing lines or paying off lines;
step three: excavating a first-stage exploration groove along an excavation boundary, wherein the size of the first-stage exploration groove is convenient for exploring by a Luoyang shovel, the bottom of the exploration groove is explored by a Luoyang shovel drilling method or other tools capable of penetrating into an exploration hole, pipelines in the influence range of the precipitation well are comprehensively explored before drilling, care must be taken during excavation, a shovel is used for lightly excavating, sharp tools such as a pickaxe, a two-tooth rake and the like are not needed for excavating, and when the soil quality is found to be changed, a wood drill is used for cleaning a covering object so as to ensure that underground pipelines are not damaged by the exploration groove;
step four: excavating a second-stage exploration groove and a third-stage exploration groove, determining the direction and the buried depth of the pipeline, after the pipeline is explored in the third step, enlarging the size of the exploration groove in situ at the exploration position, excavating the second-stage exploration groove, initially determining the direction of the pipeline, then excavating the third-stage exploration groove along the direction of primary exploration, and examining the distribution condition and the position of the pipeline in the construction range;
step five: determining and implementing a processing scheme by contacting a construction unit and a pipeline property unit, and after determining the specific distribution condition, position, trend and burial depth of the pipeline in the steps, jointly determining and implementing the processing scheme by contacting the construction unit and the pipeline property unit to ensure that subsequent construction cannot cause destructive excavation to the existing pipeline, generate safe production accidents and cause unnecessary economic loss;
step six: and 5, performing excavation construction according to the construction scheme determined in the step five.
2. The method for detecting the urban underground pipeline according to claim 1, wherein the width of the trench bottom in the third step is 1m, which is convenient for Luoyang shovel exploration, the depth of the exploration trench is not less than 2m in principle, and is deepened as appropriate in a complex zone, the width of the exploration trench is not less than 20cm on each side of the width of the enclosure structure, the exploration trench bottom is explored by adopting a Luoyang shovel drilling method or other tools capable of penetrating into the exploration hole, the total exploration depth is not less than 6m from the exploration trench bottom, the pipeline in the influence range is comprehensively explored before the precipitation well is drilled, and the exploration depth is not less than 8m from the original ground.
3. The method according to claim 2, wherein in the third step, when the pipeline is probed by the luoyang shovel drilling method, the first-stage probing groove is provided with a plurality of quincunx probing holes, the depth of each probing hole is 8m from the ground line, the depth of each probing hole is 6m from the bottom line of the first-stage probing groove, and if a sand layer fails to complete the probing task, other means or methods are adopted for probing.
4. The method as claimed in claim 3, wherein the other means or method is a conventional electromagnetic induction method or geological radar method, and the method is used as an auxiliary detection method to realize "better detection and non-omission", ensure the accuracy of pipeline detection and avoid construction accidents.
5. The method as claimed in claim 4, wherein a support is provided during the step three-stage excavation, and when the excavation depth is up to 2m, the inner support rods are arranged on the whole side slope after excavation.
6. The method as claimed in claim 5, wherein the step of supporting further comprises using a form to cooperate with the inner support rod as a slope support to ensure the stability of the slope.
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| CN202110755884.1A CN113640895A (en) | 2021-07-05 | 2021-07-05 | Detection method for urban underground pipeline |
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| CN202110755884.1A CN113640895A (en) | 2021-07-05 | 2021-07-05 | Detection method for urban underground pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114923031A (en) * | 2022-06-17 | 2022-08-19 | 中交第二航务工程局有限公司 | Trenchless detection method for ultra-buried depth complex pipeline in pipe jacking construction |
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| CN110471128A (en) * | 2019-08-30 | 2019-11-19 | 天津核源工程勘察有限公司 | A kind of great burying pipeline detection method and visit pressure device |
| CN112177006A (en) * | 2020-09-27 | 2021-01-05 | 类维波 | Construction method for protecting municipal pipeline |
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2021
- 2021-07-05 CN CN202110755884.1A patent/CN113640895A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000235081A (en) * | 1999-02-16 | 2000-08-29 | Shoji Yamamoto | Method and device for surveying buried transmission line or buried magnetic substance |
| CN105700039A (en) * | 2016-01-20 | 2016-06-22 | 广州市城市规划勘测设计研究院 | Method for detecting underground pipe in urban road exploration construction |
| CN110471128A (en) * | 2019-08-30 | 2019-11-19 | 天津核源工程勘察有限公司 | A kind of great burying pipeline detection method and visit pressure device |
| CN112177006A (en) * | 2020-09-27 | 2021-01-05 | 类维波 | Construction method for protecting municipal pipeline |
Non-Patent Citations (1)
| Title |
|---|
| 王锁利: ""管线探查技术管理探究"" * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114923031A (en) * | 2022-06-17 | 2022-08-19 | 中交第二航务工程局有限公司 | Trenchless detection method for ultra-buried depth complex pipeline in pipe jacking construction |
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