CN217537029U - Anti-seepage system of temporary road for construction of navigation channel - Google Patents
Anti-seepage system of temporary road for construction of navigation channel Download PDFInfo
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- CN217537029U CN217537029U CN202220837169.2U CN202220837169U CN217537029U CN 217537029 U CN217537029 U CN 217537029U CN 202220837169 U CN202220837169 U CN 202220837169U CN 217537029 U CN217537029 U CN 217537029U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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- Y02A10/30—Flood prevention; Flood or storm water management, e.g. using flood barriers
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Abstract
The utility model discloses a face prevention of seepage system of navigation channel construction pavement adopts the campshed to constitute by drilling bored concrete pile and high pressure jet grouting pile combination, synthesizes the prevention of seepage system and includes: the main anti-seepage wall is arranged in the front row of piles and the rear row of piles along the extension direction of the row of piles; the end parts of the front row of piles and the rear row of piles are connected in a closed manner through the side row of piles; the main impervious wall extends to the side pile row position at the corner of the edge of the foundation pit towards the side pile row direction; the main impervious wall extends towards the back row of piles along the direction vertical to the main impervious wall at the corner of the edge of the foundation pit to form an auxiliary impervious wall; the auxiliary impervious wall penetrates through the rear row of piles to be in parallel lap joint with the downstream full cofferdam impervious wall outside the foundation pit, and the lap joint area adopts high-pressure jet grouting for soil body consolidation, so that the impermeability stability of the lap joint area is improved. The utility model discloses a whole one-tenth T type of cut-off wall distributes, and the cut-off wall is connected to double row pile constitutes the whole closed system in main foundation pit.
Description
Technical Field
The utility model relates to the technical field of hydraulic engineering, in particular to an anti-seepage system of a temporary navigation channel construction pavement.
Background
With the development of economic society, the single-line ship lock gradually can not meet the requirements of passenger and freight transportation quantity, and the multiple-line ship lock engineering is more and more. The construction site of the re-line ship lock is usually close to the original ship lock and channel, and a temporary channel for channel construction is usually built on the construction site to meet the requirements of construction personnel on vehicle traffic and material transportation. The temporary channel for constructing the temporary channel is built between the construction foundation pit and the channel, the construction process is often limited in space, and the safety and stability of the temporary channel have great influence on shipping. The construction access road bears complex dynamic load in the operation process and has the effect of high water level at the side of the adjacent navigation road, the seepage problem is prominent, and anti-seepage measures are required to reduce the influence on the navigation road and the construction foundation pit.
The double-row pile formed by combining the cast-in-situ bored pile and the high-pressure jet grouting pile is an anti-seepage system widely applied to dikes, cofferdams and other projects in recent years. The double-row pile seepage-proofing system has good bearing performance, but for a temporary channel construction sidewalk with a dynamic load effect, the vertical direction and the horizontal direction of the cast-in-situ bored pile body can generate strain with different degrees under the action of larger dynamic load, the close combination between the cast-in-situ bored pile and the pile body of the high-pressure jet grouting pile is inevitably damaged, cracks are generated between the pile bodies, and the seepage-proofing effect is adversely affected.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defect among the above-mentioned prior art, the utility model provides a face impervious system of channel construction pavement adopts the structure of concrete cut-off wall and double row pile combination, and the whole one-tenth T type of cut-off wall distributes, and double row pile is connected the cut-off wall and is constituted the whole closed system of main pit, promotes the fail safe nature of impervious system.
In order to achieve the above object, the utility model adopts the following technical scheme, include:
an anti-seepage system of a temporary construction pavement of a navigation channel, comprising: the main anti-seepage wall is arranged in the front row of piles and the rear row of piles along the extension direction of the row of piles;
the end parts of the front row of piles and the rear row of piles are connected in a closed manner through the side row of piles;
the main impervious wall extends to the side pile row position at the corner of the edge of the foundation pit towards the side pile row direction;
the main impervious wall extends towards the back row of piles along the direction vertical to the main impervious wall at the corner of the edge of the foundation pit to form an auxiliary impervious wall; the auxiliary diaphragm wall penetrates through the rear row of piles to be in parallel lap joint with the downstream full cofferdam diaphragm wall on the outer side of the foundation pit;
the top elevation of the main impervious wall is lower than the bottom elevation of the upper structure.
Preferably, the lap joint area of the downstream full cofferdam impervious wall and the auxiliary impervious wall adopts high-pressure jet grouting for soil body consolidation.
Preferably, the row piles are formed by combining cast-in-situ bored piles and high-pressure jet grouting piles; and the auxiliary impervious wall penetrates through two adjacent cast-in-situ bored piles in the rear row of piles.
Preferably, the width of the auxiliary cut-off wall penetrating through two adjacent cast-in-situ bored piles in the back row of piles is equal to the distance between the two adjacent cast-in-situ bored piles.
Preferably, the impervious wall is a concrete impervious wall.
Preferably, the diameter of the bored concrete piles is 1.6m, the distance between two adjacent bored concrete piles is 0.4m, and a high-pressure jet grouting pile with the diameter of 0.8m is arranged between two adjacent bored concrete piles.
Preferably, the depth of the high-pressure jet grouting pile and the impervious wall penetrating into the impervious soil layer is not less than 2m.
The utility model has the advantages that:
(1) The method adopts a form of combining the double-row piles and the concrete impervious wall, and adjusts the length and the direction of the impervious wall and the arrangement of the lap joint area, so that the impervious wall is integrally distributed in a T shape, the seepage on the side of the foundation pit close to the navigation channel is changed from directly penetrating through the gap between the junction surface of the impervious wall and the cast-in-place pile to bypass the impervious wall and then penetrate through the lap joint area, the seepage length is adjusted, the seepage stability is met, the problem of water seepage gaps generated under the action of the traditional double-row piles under the action of dynamic load is solved, and the overlarge water seepage flow caused by the overlarge water seepage gaps and the overlarge water seepage gaps can be avoided.
(2) And high-pressure jet grouting is adopted in the lap joint area for soil body consolidation, so that the anti-permeability stability of the lap joint area, namely the high-pressure jet grouting consolidation area, is improved.
(3) Because the safety and stability of approaching the navigation channel construction pavement anti-seepage system is crucial to engineering safety construction and work progress traffic guidance, consequently, the utility model discloses develop the research that reduces double row stake anti-seepage system potential safety hazard, promote the fail safe nature of anti-seepage system, have and show practical meaning.
Drawings
FIG. 1 is a three-dimensional schematic view of an impervious wall and double-row pile combined impervious system
Fig. 2 is a schematic structural diagram of an impervious system combining an impervious wall and double-row piles.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 and 2, a comprehensive anti-seepage system for a temporary construction sidewalk is specifically as follows:
the cast-in-situ bored pile 1 and the high-pressure jet grouting pile 2 are combined to form a row pile;
the comprehensive anti-seepage system comprises: the front row of piles L1 close to the side close to the navigation channel, the rear row of piles L2 close to the side of the foundation pit, and the main impervious wall 31 arranged in the front row of piles and the rear row of piles along the extension direction of the row of piles.
The ends of the front row of piles L1 and the rear row of piles L2 are connected in a closed mode through side row of piles L3;
after the main anti-seepage wall 31 is constructed to the point A of the inflection point of the edge of the foundation pit, continuing to extend a section to the point L3 of the side row pile, namely the point B, in the direction of the central axis of the double row pile and towards the direction of the side row pile L3 in the double row pile for prolonging the seepage diameter;
the main impervious wall 31 is arranged at the inflection point A of the edge of the foundation pit and extends towards the rear row of piles L2 along the direction vertical to the central axes of the double rows of piles to form an auxiliary impervious wall 32.
The auxiliary cut-off wall 32 passes through two adjacent cast-in-situ bored piles 1 in the rear row of piles L2, namely the cast-in-situ bored piles I and II, and is in parallel lap joint with the downstream full cofferdam cut-off wall on the outer side of the foundation pit. The width of the impervious wall 3 penetrating through the cast-in-situ bored piles I and II of the rear row of piles L2 is equal to the distance between the cast-in-situ bored piles I and II. And the lap joint area 4 of the auxiliary impervious wall 32 and the downstream full-dam impervious wall is solidified by adopting high-pressure jet grouting.
The impervious wall is a concrete impervious wall, the impervious wall is integrally distributed in a T shape and comprises a main impervious wall 31 and an auxiliary impervious wall 32, and the impervious wall is connected by double rows of piles to form a main foundation pit integrally-closed system.
The utility model discloses in, for the prevention of seepage problem of the contact surface of solving the double row pile and uniting the cut-off wall, carry out extension treatment along double row pile axis direction to the cut-off wall to the parallel overlap joint of the full cofferdam cut-off wall in low reaches in the extension of 1 interval center of bored concrete pile along the back row pile and the foundation ditch outside, 3 whole T types of cut-off wall distribute promptly. And high-pressure jet grouting is adopted to perform soil consolidation in the lap joint area 4, so that the anti-permeability stability of the lap joint area 4 is improved.
Example (b):
an anti-seepage system of a temporary construction pavement of a navigation channel is specifically arranged as follows:
the wall thickness, namely the width of the impervious wall is 0.4m;
constructing the main cut-off wall along the central axis direction of the double-row piles in the double-row piles to the inflection point A of the edge of the foundation pit, and continuing extending 5m to the point B in the direction of the side row piles in the double-row piles to form an auxiliary cut-off wall;
the main diaphragm wall extends towards the back row of piles along the direction perpendicular to the central axis of the double rows of piles at the inflection point A of the edge of the foundation pit, passes through two adjacent cast-in-situ bored piles in the back row of piles and is in parallel lap joint with the downstream full cofferdam diaphragm wall outside the foundation pit, and the length of a lap joint area 4 is 4m and the width is 0.6m.
In the project of the foundation pit of the compound ship lock on posts of the Huaihe river channel of Anhui province, the foundation pit of the compound ship lock is close to a flood gate of the city West lake and a first ship lock, and is close to the Huaihe river channel, the underground water level is higher, and a single-row swing-spraying impervious wall is additionally arranged on the basis of double-row piles of the cofferdam in the whole downstream year. The plain concrete impervious wall and the double-row piles jointly form an impervious system for excavating the main foundation pit.
Based on the utility model discloses a face prevention of seepage system of channel construction pavement, this embodiment provides a construction method of face prevention of seepage system of channel construction pavement simultaneously, goes on according to following step:
s1, pile foundation construction of double-row cast-in-place bored piles, namely, hole forming construction of the double-row cast-in-place bored piles is carried out at a designated ground position by using a pile machine, wherein the diameter of each cast-in-place bored pile is 1.6m;
s2, the cast-in-situ bored piles are rigid structures and cast by concrete, and after the construction of the double rows of cast-in-situ bored piles is completed, a 0.4m interval is reserved between every two adjacent cast-in-situ bored piles;
in order to achieve better supporting and water stopping effects, after concrete pouring of each row of cast-in-situ bored piles is completed and final setting is achieved, high-pressure jet grouting piles with the diameter of 0.8m are arranged between every two adjacent rows of cast-in-situ bored piles, pile centers of the two adjacent high-pressure jet grouting piles are spaced by 2m, the depth of the high-pressure jet grouting piles penetrating into a waterproof soil layer is not less than 2m, and a water stopping reinforcement body is formed;
s3, construction of the plain concrete impervious wall: in order to reduce disturbance of dynamic and static loads of equipment on the construction of the impervious wall and ensure the continuity of a construction working surface, after pile foundation construction is completed, the pile foundation construction platform is utilized to carry out plain concrete impervious wall construction, the thickness is 0.4m, and the depth of the bottom of the plain concrete impervious wall penetrating into an impervious soil layer is not less than 2m;
s4, construction of the high-pressure jet grouting pile: and constructing the high-pressure jet grouting pile at the elevation of a pile foundation construction platform while constructing the impervious wall.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the invention, and all modifications, equivalents, improvements and the like that are made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (7)
1. An anti-seepage system of a temporary navigation channel construction sidewalk is characterized by comprising: the system comprises front row piles (L1) close to the side close to the navigation channel, rear row piles (L2) close to the side of the foundation pit, and main impervious walls (31) arranged in the front row piles and the rear row piles along the extending direction of the row piles;
the end parts of the front row of piles (L1) and the rear row of piles (L2) are connected in a closed mode through side row of piles (L3);
the main impervious wall (31) extends to the side row pile (L3) at the inflection point (A) of the edge of the foundation pit towards the direction of the side row pile (L3);
the main impervious wall (31) extends towards the back row of piles (L2) at the inflection point (A) of the edge of the foundation pit along the direction vertical to the main impervious wall (3) to form an auxiliary impervious wall (32); the auxiliary impervious wall (32) passes through the rear row of piles to be in parallel lap joint with the downstream full cofferdam impervious wall outside the foundation pit;
the top elevation of the main impervious wall (31) is lower than the bottom elevation of the upper structure (5).
2. The seepage-proofing system of a temporary navigation channel construction pavement according to claim 1, wherein the lap joint area (4) of the downstream full cofferdam seepage-proofing wall and the auxiliary seepage-proofing wall (32) adopts high-pressure jet grouting for soil consolidation.
3. The anti-seepage system of the construction approach of the navigation channel according to claim 1, wherein the row pile is formed by combining a cast-in-situ bored pile (1) and a high-pressure jet grouting pile (2); and the auxiliary impervious walls (32) penetrate through two adjacent cast-in-situ bored piles (1) in the rear row of piles (L2).
4. The anti-seepage system for the construction sidewalk for the temporary navigation channel according to claim 2, wherein the width of the auxiliary anti-seepage wall (32) penetrating through two adjacent cast-in-situ bored piles (1) in the rear row of piles (L2) is equal to the distance between the two adjacent cast-in-situ bored piles (1).
5. The anti-seepage system for the construction sidewalk adjacent to the navigation channel as claimed in claim 1, wherein the anti-seepage wall is a concrete anti-seepage wall.
6. The anti-seepage system for the temporary construction walkway according to claim 1, wherein the diameter of the cast-in-situ piles (1) is 1.6m, the distance between two adjacent cast-in-situ piles (1) is 0.4m, and a high pressure jet grouting pile (2) with a diameter of 0.8m is arranged between two adjacent cast-in-situ piles (1).
7. The anti-seepage system of the construction sidewalk for the temporary navigation channel as claimed in claim 1, wherein the depth of the high-pressure jet grouting pile (2) and the anti-seepage wall (3) penetrating into the impervious soil layer is not less than 2m.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220837169.2U CN217537029U (en) | 2022-04-11 | 2022-04-11 | Anti-seepage system of temporary road for construction of navigation channel |
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| CN202220837169.2U CN217537029U (en) | 2022-04-11 | 2022-04-11 | Anti-seepage system of temporary road for construction of navigation channel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114673185A (en) * | 2022-04-11 | 2022-06-28 | 安徽水安建设集团股份有限公司 | Comprehensive anti-seepage system for temporary road for construction of temporary channel and construction method |
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2022
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114673185A (en) * | 2022-04-11 | 2022-06-28 | 安徽水安建设集团股份有限公司 | Comprehensive anti-seepage system for temporary road for construction of temporary channel and construction method |
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