CN111456053A - Construction method for dry operation of ditch and pond - Google Patents

Construction method for dry operation of ditch and pond Download PDF

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Publication number
CN111456053A
CN111456053A CN202010295673.XA CN202010295673A CN111456053A CN 111456053 A CN111456053 A CN 111456053A CN 202010295673 A CN202010295673 A CN 202010295673A CN 111456053 A CN111456053 A CN 111456053A
Authority
CN
China
Prior art keywords
construction
pond
water
trench
ditch
Prior art date
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.)
Pending
Application number
CN202010295673.XA
Other languages
Chinese (zh)
Inventor
苗广营
马小军
祁文斌
李慧赞
汪正芸
张宁波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qinghai Highway Construction Administration
Jiangsu Sinoroad Engineering Technology Research Institute Co ltd
Original Assignee
Qinghai Highway Construction Administration
Jiangsu Sinoroad Engineering Technology Research Institute Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qinghai Highway Construction Administration, Jiangsu Sinoroad Engineering Technology Research Institute Co ltd filed Critical Qinghai Highway Construction Administration
Priority to CN202010295673.XA priority Critical patent/CN111456053A/en
Publication of CN111456053A publication Critical patent/CN111456053A/en
Pending legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00Keeping dry foundation sites or other areas in the ground
    • E02D19/06Restraining of underground water
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D19/00Keeping dry foundation sites or other areas in the ground
    • E02D19/06Restraining of underground water
    • E02D19/10Restraining of underground water by lowering level of ground water
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/10Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/14Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates

Abstract

The invention relates to the technical field of ditch and pond construction, in particular to a ditch and pond dry operation construction method. Uniformly arranging a plurality of dewatering wells at the periphery of the ditch and the pond; the dewatering well is used for pumping and draining surface water and shallow groundwater in advance; the dewatering well is connected with a water pump; the input end of the water pump is inserted into the dewatering well and used for pumping out water in the dewatering well; the output end of the water pump is connected with a drainage ditch; the drainage ditch is used for storing the water pumped by the water pump; the invention aims to provide a method for constructing the ditch and the pond by dry operation, aiming at overcoming the defects in the prior art, and reducing the water content of the soil body constructed by the ditch and the pond.

Description

Construction method for dry operation of ditch and pond
Technical Field
The invention relates to the technical field of ditch and pond construction, in particular to a ditch and pond dry operation construction method.
Background
In the prior art, when the ditch and pond construction operation is carried out, the drainage of the traditional water collecting well only can drain open water in the ditch and pond, the water content of a soil body at the bottom of the ditch and pond is still very large, spring soil often appears during backfilling construction, the filled soil cannot reach the compactness required by design, the repeated reworking is caused, and the engineering quality cannot be ensured.
In view of the above problems, the designer actively makes research and innovation based on the practical experience and professional knowledge that the product engineering is applied for many years and by matching with the application of the theory, so as to design the trench and pond dry operation construction method, reduce the water content of the soil body constructed in the trench and pond and improve the practicability.
Disclosure of Invention
The invention aims to provide a construction method for dry-method operation of a ditch and a pond aiming at the defects in the prior art, which reduces the water content of soil body constructed in the ditch and the pond, is arranged in advance before the construction operation of the ditch and the pond, is planned in advance, determines the number of dewatering wells according to the area size and the construction elevation position of the ditch and the pond, and ensures that the dewatering is carried out for at least one week to ten days in advance so as to reduce the water content of the soil body at the bottom of the ditch after excavation.
In order to achieve the purpose, the invention adopts the technical scheme that:
uniformly arranging a plurality of dewatering wells at the periphery of the ditch and the pond; the dewatering well is used for pumping and draining surface water and shallow groundwater in advance; the dewatering well is connected with a water pump; the input end of the water pump is inserted into the dewatering well and used for pumping out water in the dewatering well; the output end of the water pump is connected with a drainage ditch; the drainage ditch is used for storing the water pumped by the water pump.
Furthermore, the size and the number of the dewatering wells are determined according to the area of the ditch and the pond and the construction elevation position.
Further, a fence is arranged around the ditch and the pond; the fence is used for carrying out safety protection enclosure on the ditch and the pond.
Further, the drainage ditch is connected with the water collecting tank; the water collecting tank is used for precipitating the water in the drainage ditch.
Further, the construction steps of the dewatering well comprise:
1) well point measurement positioning is carried out, and drilling positioning is carried out after positioning is finished;
2) drilling and cleaning holes;
3) hoisting a sand-free pipe and backfilling a gravel filter layer;
4) sealing and washing the well;
5) installing the water pump and the control circuit;
6) trying to pump water;
7) working normally;
8) pulling out the sand-free pipe after the work is finished;
9) and (6) sealing the well.
Further, in the step 9), the well plugging is to backfill the dewatering well by adopting a gravel plummet method.
Further, the construction of the dewatering well is carried out at least seven to ten days before the construction of the ditch and the pond, and the dewatering well is used for reducing the water content of soil at the bottom of the ditch and the pond after excavation.
Further, the construction of the dewatering well runs through the whole construction process of the ditch and the pond, and is stopped after the construction backfill or the box culvert pipe culvert construction platform back backfill is finished.
Through the technical scheme of the invention, the following technical effects can be realized:
although the trench and pond construction dewatering well belongs to an additional measure outside the body engineering, the water content of the bottom soil body of the trench and pond is effectively reduced, a dry operation environment is created, and the trench and pond backfilling construction progress is greatly accelerated; meanwhile, by adopting the trench and pond dewatering dry operation, the water content of the soil body at the bottom of the trench and pond can be greatly reduced, the bearing capacity of the soil body at the bottom of the trench and pond is improved, a solid working surface is provided for the road roller, the spring soil phenomenon is avoided, and the backfill soil compaction degree can reach the design requirement of not less than 93%.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a dewatering well in a trench and pond dry operation construction method in an embodiment of the invention;
FIG. 2 is a process diagram of the construction method of dewatering well in dry operation of the ditch and the pond in the embodiment of the invention;
FIG. 3 is a construction process diagram of a construction method of trench and pond dry operation in the embodiment of the invention;
reference numerals: the system comprises a ditch 1, a dewatering well 2, a water pump 3 and a drainage ditch 4.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like are based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A construction method for dry operation of a ditch and a pond is shown in figure 1 and comprises the steps that a plurality of dewatering wells 2 are uniformly distributed at the periphery of the ditch and the pond 1; the dewatering well 2 is used for pumping and draining surface water and shallow groundwater in advance; the dewatering well 2 is connected with a water pump 3; the input end of the water pump 3 is inserted into the dewatering well 2 and is used for pumping out the water in the dewatering well 2; the output end of the water pump 3 is connected with a drainage ditch 4; the drainage ditch 4 is used for storing the moisture pumped by the water pump 3.
Specifically, the flow of the trench and pond dry operation construction method is construction preparation → precipitation well arrangement → precipitation well burying → precipitation well system operation → precipitation well abandonment after precipitation construction. Because the construction in the prior art can only drain open water in the ditch and the pond, the water content of the bottom soil body of the ditch and the pond is still very large, spring soil often appears during backfilling construction, and the filled soil can not reach the compactness of the design requirement. The method is characterized in that dewatering wells 2 are uniformly arranged on the periphery of the ditch 1, water in the soil body of the ditch 1 is pumped away by a water pump 3, the water level is reduced to be below 1m of the bottom of the ditch, the water at the bottom of the ditch 1 is pumped away by the water pump 3 and seeps around by combining physical knowledge, and then is pumped away by the water pump 3 again and is discharged into a drainage ditch 4, so that construction is completed.
As shown in fig. 1, the size and number of dewatering wells 2 are preferably determined according to the area of the pond 1 and the construction elevation position.
Specifically, on the basis of the width of the ditch 1 to be treated according to the design requirement, arranging professional technical workers, drilling wells with the diameter of 500mm at the intervals of not more than 15m and the depth of not less than 20m, installing sand-free pipes, and completing the dewatering well 1.
As a preference of the above embodiment, as shown in fig. 1, a fence is provided around the trench 1; the fence is used for carrying out safety protection enclosure on the ditch and pond 1.
Specifically, the ditch and pond 1 is subjected to enclosure safety protection, a water pump 3 is arranged below each dewatering well 2 according to the requirement of one machine and one gate, and dewatering operation is started.
As a preferable example of the above embodiment, as shown in fig. 1, the drainage ditch 4 is connected to a water collecting tank; the water collection tank is used for precipitating the water in the drainage ditch 4.
As a preferable example of the above embodiment, as shown in fig. 2, the construction step of the dewatering well 2 includes:
1) well point measurement positioning is carried out, and drilling positioning is carried out after positioning is finished;
2) drilling and cleaning holes;
3) hoisting a sand-free pipe and backfilling a gravel filter layer;
4) sealing and washing the well;
5) installing the water pump 2 and a control circuit;
6) trying to pump water;
7) working normally;
8) pulling out the sand-free pipe after the work is finished;
9) and (6) sealing the well.
Specifically, the installation procedure of the dewatering well 2 is as follows: well point line laying positioning → drilling installation and burying of a dewatering well → well washing → installation of pumping equipment → trial pumping and inspection → formal dewatering input.
A. Firstly, measuring and setting out to determine the well point position, burying the dewatering well 2, drilling a hole by using a mud retaining wall impact drill, wherein the diameter of the drilled hole is generally 600 plus 800mm, when the depth of the hole reaches a preset depth, completely taking out the mud in the hole, then putting a 500mm sand-free pipe, placing a water-filtered well pipe in the center of the hole, filling coarse sand around the well pipe, wherein the thickness of the water-filtered well pipe is not less than 100mm, and filling the water-filtered well pipe in 500mm below the ground of an upper opening of the well pipe by using clay.
B. Flushing a well pipe: the rubber pipe is inserted into the bottom of the well point pipe by using equipment such as an air compressor, a sewage pump and the like to carry out water injection and cleaning until clear water flows out.
C. Installing a water pumping device: the submersible pump is arranged in the well pipe, and is connected with the submersible pump through a two-inch white plastic pipe and is connected into a water pool arranged outside the pipeline.
D. Trial drawing: each pipe well is firstly subjected to trial pumping, and after water is normally discharged, formal precipitation is carried out.
Preferably, as shown in fig. 2, in the step 9), the well plugging is to backfill the dewatering well 2 by using a gravel plummet method.
As shown in fig. 3, the dewatering well 2 is preferably constructed in at least seven to ten days before the construction of the trench 1, so as to reduce the water content of the soil at the bottom of the trench 1 after excavation.
As shown in fig. 3, the construction of the dewatering well 2 preferably runs through the entire construction process of the trench 1, and is stopped after the construction backfill or the box culvert construction platform back backfill is completed.
Specifically, the construction of the dewatering well 2 is started 7 to 10 days before the construction and excavation of the ditch and the pond 1, the dewatering operation runs through the whole construction process of the ditch and the pond, and the dewatering is stopped after the construction backfill or the box culvert pipe culvert construction platform back backfill is finished.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (8)

1. A construction method for dry operation of a ditch and a pond is characterized by comprising the steps of uniformly arranging a plurality of dewatering wells (2) at the periphery of the ditch and the pond (1); the dewatering well (2) is used for pumping and draining surface water and shallow groundwater in advance; the dewatering well (2) is connected with a water pump (3); the input end of the water pump (3) is inserted into the dewatering well (2) and is used for pumping out the moisture in the dewatering well (2); the output end of the water pump (3) is connected with a drainage ditch (4); the drainage ditch (4) is used for storing the water pumped by the water pump (3).
2. The trench and pond dry operation construction method according to claim 1, characterized in that the size and the number of the dewatering wells (2) are determined according to the area size and the construction elevation position of the trench and pond (1).
3. The trench dry operation construction method of claim 1, wherein a fence is arranged around the trench (1); the fence is used for carrying out safety protection enclosure on the ditch and the pond (1).
4. A trench dry operation construction method according to claim 1, characterized in that the drainage ditch (4) is connected with a water collecting tank; the water collecting tank is used for precipitating the water in the drainage ditch (4).
5. The trench and pond dry working construction method according to claim 1, characterized in that the construction steps of the dewatering well (2) comprise:
well point measurement positioning is carried out, and drilling positioning is carried out after positioning is finished;
drilling and cleaning holes;
hoisting a sand-free pipe and backfilling a gravel filter layer;
sealing and washing the well;
installing the water pump (2) and a control circuit;
trying to pump water;
working normally;
pulling out the sand-free pipe after the work is finished;
and (6) sealing the well.
6. A trench and pond dry working construction method according to claim 5, characterized in that in the step 9), the well sealing is realized by backfilling the dewatering well (2) by a gravel water drop method.
7. The trench dry operation construction method of claim 5, wherein the dewatering well (2) is constructed at least seven to ten days before the trench (1) is constructed, so that the water content of soil at the bottom of the trench (1) is reduced after excavation.
8. The construction method of the trench and pond dry operation according to claim 1 is characterized in that the construction of the dewatering well (2) runs through the whole construction process of the trench and pond (1) and is stopped after the construction backfill or the box culvert and pipe culvert construction platform back backfill is finished.
CN202010295673.XA 2020-04-15 2020-04-15 Construction method for dry operation of ditch and pond Pending CN111456053A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010295673.XA CN111456053A (en) 2020-04-15 2020-04-15 Construction method for dry operation of ditch and pond

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010295673.XA CN111456053A (en) 2020-04-15 2020-04-15 Construction method for dry operation of ditch and pond

Publications (1)

Publication Number Publication Date
CN111456053A true CN111456053A (en) 2020-07-28

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Country Status (1)

Country Link
CN (1) CN111456053A (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005002659A (en) * 2003-06-11 2005-01-06 East Japan Railway Co Groundwater circulation system in excavation of ground, and construction method for measure against groundwater in excavation of ground
CN203530996U (en) * 2013-09-25 2014-04-09 杭州萧山路桥工程处 Multi-well-point combined type precipitation facility
CN203716164U (en) * 2014-02-26 2014-07-16 顾国华 Automatic numerical control foundation pit dewatering system
CN104032760A (en) * 2013-03-05 2014-09-10 李孝虎 Foundation pit construction tube well dewatering method
CN205276245U (en) * 2015-11-27 2016-06-01 上海长凯岩土工程有限公司 Vibrate joint vacuum pumping system
CN106988342A (en) * 2017-05-19 2017-07-28 中国水利水电第四工程局有限公司 A kind of underground pipe gallery drainage and construction method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005002659A (en) * 2003-06-11 2005-01-06 East Japan Railway Co Groundwater circulation system in excavation of ground, and construction method for measure against groundwater in excavation of ground
CN104032760A (en) * 2013-03-05 2014-09-10 李孝虎 Foundation pit construction tube well dewatering method
CN203530996U (en) * 2013-09-25 2014-04-09 杭州萧山路桥工程处 Multi-well-point combined type precipitation facility
CN203716164U (en) * 2014-02-26 2014-07-16 顾国华 Automatic numerical control foundation pit dewatering system
CN205276245U (en) * 2015-11-27 2016-06-01 上海长凯岩土工程有限公司 Vibrate joint vacuum pumping system
CN106988342A (en) * 2017-05-19 2017-07-28 中国水利水电第四工程局有限公司 A kind of underground pipe gallery drainage and construction method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
王大伟: "沟塘清淤回填方案", 《百度文库》 *

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