CN116006183A - Supporting system and method suitable for circular pressure regulating well under poor geological conditions - Google Patents
Supporting system and method suitable for circular pressure regulating well under poor geological conditions Download PDFInfo
- Publication number
- CN116006183A CN116006183A CN202310310668.5A CN202310310668A CN116006183A CN 116006183 A CN116006183 A CN 116006183A CN 202310310668 A CN202310310668 A CN 202310310668A CN 116006183 A CN116006183 A CN 116006183A
- Authority
- CN
- China
- Prior art keywords
- cast
- pressure regulating
- pile
- anchor rod
- waist
- 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.)
- Granted
Links
Images
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The invention provides a support system and a method suitable for a round pressure regulating well under poor geological conditions, wherein the support system comprises a cast-in-place pile, a crown beam, a waist beam, a first anchor rod, a second anchor rod and a net-hanging spray concrete; circumferentially and alternately arranging filling piles along the outer side of the excavation boundary of the pressure regulating well; crown beams are arranged at the top of each filling pile; and a plurality of waist beams are arranged at intervals from top to bottom in each cast-in-place pile which is enclosed into a ring shape. The waist beam is intersected with the cast-in-place pile and is fixed through a first anchor rod. In the region between adjacent waist beams, the hanging net spray concrete is arranged in the cast-in-place pile in a connecting manner, and meanwhile, one end of the second anchor rod is poured into the hanging net spray concrete. The invention has good structural integrity, effectively combines the flexible support and the rigid support, can be used for the construction of the pressure regulating well under the poor geological condition, effectively solves the problem of the excavation instability of the round pressure regulating well under the poor geological condition, and ensures the stability and safety of surrounding rocks of the pressure regulating well in the construction period.
Description
Technical Field
The invention belongs to the technical field of hydraulic and hydroelectric engineering pressure regulating well support, and particularly relates to a support system and method suitable for a round pressure regulating well under poor geological conditions.
Background
The supporting method commonly used for the excavation of the pressure regulating well of the hydraulic and hydroelectric engineering is mainly anchor spraying supporting, is suitable for the situation that surrounding rock conditions are good, and can effectively support the rock and soil body with unstable surface layer; when the pressure regulating well is in unfavorable geological conditions such as deep coverage, rock breaking and the like, the lateral stability of the well wall, the local stability of the well wall, the stability of the bottom hole bulge and the like become main problems, and the shotcrete support cannot meet the requirement of the pressure regulating well support stability. The reasonable and effective supporting system structure is determined, the safety, the efficiency and the economical efficiency of engineering are ensured, and the problem to be solved at present.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a support system and a method suitable for a round pressure regulating well under poor geological conditions, which effectively solve the problems of local stability of the wall of the round pressure regulating well, overall stability of the wall, bottom hole swelling and the like in the poor geological conditions, and ensure the stability and safety of surrounding rocks of the pressure regulating well in the construction period.
The technical scheme adopted by the invention is as follows:
the invention provides a support system suitable for a round pressure regulating well under poor geological conditions, which comprises a cast-in-place pile (1), a crown beam (2), a waist beam (3), a first anchor rod (41), a second anchor rod (42) and a net-hanging sprayed concrete (5);
a plurality of filling piles (1) are circumferentially and alternately arranged along the outer side of the excavation boundary of the pressure regulating well, so that each filling pile (1) forms an annular structure; the crown beams (2) are arranged at the top of each filling pile (1), and the tops of the filling piles (1) are connected in a circumferential direction to form a whole through the crown beams (2);
a plurality of round waist beams (3) are arranged at intervals from top to bottom in the cast-in-place piles (1) which are enclosed into a ring shape; each waist beam (3) is intersected with each cast-in-place pile (1), and the waist beams (3) and the cast-in-place piles (1) are fixed through the first anchor rods (41), and the fixing mode is as follows: along the circumferential direction of the waist beam (3), arranging a first anchor rod (41) between every two cast-in-place piles (1), wherein each first anchor rod (41) is perpendicular to the side face of the waist beam (3) facing the well, one end of each first anchor rod (41) is fixed with the waist beam (3), and the other end of each first anchor rod (41) penetrates through the waist beam (3) and then is anchored into the well wall rock soil between two adjacent cast-in-place piles (1);
the second anchor rods (42) parallel to the first anchor rods (41) are circumferentially arranged between two adjacent waist beams (3) at intervals, one end of each second anchor rod (42) is positioned between two adjacent cast-in-place piles (1), and the other end of each second anchor rod (42) is anchored into the well wall rock soil between two adjacent cast-in-place piles (1);
in the region between two adjacent waist beams (3), each cast-in-place pile (1) in the hoop is connected the piece and is arranged hang net spray concrete (5), simultaneously, make one end of second stock (42) pour in hang net spray concrete (5), realize hang net spray concrete (5) cast-in-place pile (1) with effective connection of second stock (42) forms the support whole.
Preferably, after the pile head of the cast-in-place pile (1) is broken, the exposed steel bars extend into the crown beam (2) and are fixedly connected with the steel bars in the crown beam (2).
Preferably, the steel bars of the waist beam (3) are effectively connected and fixed with the steel bars of the cast-in-place pile (1).
Preferably, one end of the first anchor rod (41) extends into the waist beam (3) and is effectively connected and fixed with the steel bars in the waist beam (3).
Preferably, the first anchor rod (41) and the second anchor rod (42) are arranged in parallel in an equal length manner.
The invention also provides a method of a support system suitable for a round pressure regulating well under poor geological conditions, comprising the following steps:
s1, before the excavation of a circular pressure regulating well, carrying out reinforced concrete bored cast-in-situ piles along the outer side of the excavation boundary of the circular pressure regulating well according to a designed interval, and completing the construction of the cast-in-situ piles (1);
s2, after the construction of the bored concrete pile (1) is completed, breaking the pile head concrete reserved steel bars at the top of each bored concrete pile (1); constructing the crown beam (2) at the top of the filling pile (1), enabling the top steel bars of the filling pile (1) to extend into the crown beam (2), and enabling the tops of the filling piles (1) to be connected in a circumferential mode through the crown beam (2) to form a whole;
s3, after the construction of the crown beam (2) is completed, a circular pressure regulating well is excavated, a well wall is supported by the net-hanging and spraying concrete (5) in the excavation process, the net-hanging and spraying concrete (5) is effectively connected with the cast-in-place pile (1), and a second anchor rod (42) is arranged at a design position;
s4, after the round pressure regulating well is excavated to a designed elevation, annular waist beams (3) are arranged at intervals along the well wall, the waist beams (3) are connected with the cast-in-place pile (1), and a first anchor rod (41) is arranged at a designed position.
The support system and the method for the circular pressure regulating well under the poor geological condition have the following advantages:
the support system and the method for the round pressure regulating well under the poor geological condition, which are provided by the invention, have good structural integrity, effectively combine the flexible support and the rigid support, can be used for pressure regulating well construction under the poor geological condition, effectively solve the problem of excavation instability of the round pressure regulating well under the poor geological condition, and ensure the stability and safety of surrounding rocks of the pressure regulating well during the construction period.
Drawings
FIG. 1 is a longitudinal cross-sectional view of a support system for a round pressure regulating well adapted for use in poor geological conditions provided by the present invention;
FIG. 2 isbase:Sub>A cross-sectional view taken along line A-A of FIG. 1;
fig. 3 is a cross-sectional view taken along line B-B of fig. 1.
Wherein:
1-filling pile; 2- - -a crown beam; 3- - -waist beam; 41- - -a first anchor; 42— a second anchor; 5-hanging net spray concrete.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects solved by the invention more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The invention provides a support system suitable for a round pressure regulating well under poor geological conditions such as deep coverage, rock breaking and the like, which can effectively solve the problems of instability of a shallow surface layer of the well wall, instability of the whole well wall, swelling at the bottom of the well and the like of the round pressure regulating well under the poor geological conditions.
Referring to fig. 1, 2 and 3, the support system for a round pressure regulating well under poor geological conditions provided by the invention comprises a cast-in-place pile 1, a crown beam 2, a waist beam 3, a first anchor rod 41, a second anchor rod 42 and a net-hanging sprayed concrete 5;
a plurality of filling piles 1 are circumferentially and alternately arranged along the outer side of the excavation boundary of the pressure regulating well, so that each filling pile 1 forms an annular structure; crown beams 2 are arranged at the top of each filling pile 1, and the tops of the filling piles 1 are connected in a circumferential direction to form a whole through the crown beams 2; in the concrete implementation, after the pile head of the cast-in-place pile 1 is broken, exposed steel bars extend into the crown beam 2 and are connected and fixed with the steel bars in the crown beam 2.
A plurality of round waist beams 3 are arranged at intervals from top to bottom in each cast-in-place pile 1 which is enclosed into a ring shape; specifically, the steel bars of the waist beam 3 are effectively connected and fixed with the steel bars of the cast-in-place pile 1.
Each waist beam 3 is intersected with each cast-in-place pile 1, and the waist beams 3 and the cast-in-place piles 1 are fixed through first anchor rods 41 in the following fixing modes: along the circumferential direction of the wale 3, a first anchor rod 41 is arranged between every two cast-in-place piles 1, each first anchor rod 41 is perpendicular to the side face of the wale 3 facing the well, one end of each first anchor rod 41 is fixed with the wale 3, and the other end of each first anchor rod 41 penetrates through the wale 3 and then is anchored into the well wall rock soil between two adjacent cast-in-place piles 1; specifically, one end of the first anchor rod 41 extends into the wale 3 and is effectively connected and fixed with the steel bars inside the wale 3.
Between two adjacent wales 3, second anchor rods 42 parallel to the first anchor rods 41 are circumferentially arranged at intervals, and the first anchor rods 41 and the second anchor rods 42 can be arranged in parallel with each other up and down. One end of the second anchor rod 42 is positioned between two adjacent cast-in-place piles 1, and the other end of the second anchor rod 42 is anchored into the well wall rock soil between two adjacent cast-in-place piles 1;
in the region between two adjacent waist beams 3, the net hanging spray concrete 5 is arranged in the internal connecting piece of each cast-in-place pile 1 in the circumferential direction, and meanwhile, one end of the second anchor rod 42 is poured in the net hanging spray concrete 5, so that the net hanging spray concrete 5, the cast-in-place piles 1 and the second anchor rod 42 are effectively connected, and a supporting whole is formed.
In the concrete implementation, the method has the following design characteristics:
the cast-in-situ piles 1 are arranged outside the excavation boundary of the pressure regulating well, are arranged at intervals in the circumferential direction, and the diameter, the interval distance and the depth of the cast-in-situ piles 1 can be determined according to the characteristics of surrounding rock characteristics, structural stress, construction process and the like, and the cast-in-situ piles 1 are required to finish construction before the pressure regulating well is excavated;
the crown beam 2 is arranged at the top of the filling pile 1, and the axis of the crown beam 2 is consistent with the arrangement central line of the filling pile 1; the crown beam 2 is used for connecting the filling pile 1 at the top in a circumferential direction, the pile head of the filling pile 1 is broken to enable the reinforcing steel bars to extend into the crown beam 2 and be connected with the reinforcing steel bars, and the crown beam 2 is used for completing construction after the filling pile construction is completed and before the pressure regulating well is excavated;
the wales 3 are arranged at intervals from top to bottom along the cast-in-place pile 1 and are intersected with the cast-in-place pile 1, the steel bars of the wales 3 are effectively connected with the steel bars of the cast-in-place pile 1, the wales 1 are fixed on the well wall rock soil through first anchor rods 41, the wales 3 are constructed after being excavated to a designed elevation or interval, and the next construction procedure is carried out after the design strength is met;
the first anchor rod 41 should extend into the waist beam 3 and be effectively connected with the steel bars, and the first anchor rod 41 should be anchored into the well wall rock soil according to the designed depth; the second anchor rod 42 is arranged between the cast-in-place pile 1 and the waist beam 3, the end part of the second anchor rod is effectively connected with the net-hanging sprayed concrete 5, and is anchored into the well wall rock soil according to the designed depth;
the net hanging spray concrete 5 is arranged between the waist beams 3, and the reinforcing steel bar net is effectively connected with the cast-in-place pile 1, the waist beams 3 and the second anchor rods 42 to form a supporting whole.
The invention also provides a method of a support system suitable for a round pressure regulating well under poor geological conditions, comprising the following steps:
s1, before the excavation of a circular pressure regulating well, carrying out reinforced concrete bored cast-in-situ piles along the outer side of the excavation boundary of the circular pressure regulating well according to a designed interval, and completing the construction of the cast-in-situ piles 1;
s2, after the construction of the filling piles 1 is completed, breaking the pile head concrete reserved steel bars at the tops of the filling piles 1; constructing a crown beam 2 at the top of the filling pile 1, enabling reinforcing steel bars at the top of the filling pile 1 to extend into the crown beam 2, and enabling the tops of the filling piles 1 to be connected in a circumferential direction through the crown beam 2 to form a whole;
s3, after the crown beam 2 is constructed, a circular pressure regulating well is excavated, a net-hanging concrete 5 is supported on the well wall in the excavation process, the net-hanging concrete 5 is effectively connected with the cast-in-place pile 1, and a second anchor rod 42 is arranged at a design position;
s4, after the round pressure regulating well is excavated to a designed elevation, annular waist beams 3 are arranged at intervals along the well wall, the waist beams 3 are connected with the cast-in-place pile 1, and a first anchor rod 41 is arranged at a designed position.
The following further describes a conventional hydropower station engineering adopting the technical scheme of the invention by taking the following example with reference to the accompanying drawings:
and in a certain conventional hydropower station engineering, the excavation diameter is 27m, and the excavation depth is 60m. According to the drilling exploration data, the upper part of the surrounding rock of the pressure regulating well is residual slope crushed block stone soil and tuff sand, the covering layer is 16m thick, the middle part is fully weathered tuff sand, the thickness is about 47m, and the bottom rock mass is strong weathered tuff. The complexity of excavation scale and geological conditions present challenges to common excavation support schemes (including anchor injection, grouting, open caisson, row pile, and continuous wall schemes, etc.). Therefore, the novel support system provided by the invention is arranged in the process of excavating the pressure regulating well:
1 cast-in-place pile 1 of reinforced concrete with the diameter of 0.8m is arranged at intervals of 8 degrees along the outer side of the excavation boundary, and the pile length is 62m;
the top of the filling pile 1 is provided with an annular crown beam 2, the cross section size of the crown beam 2 is 1m multiplied by 0.8m wide, and the filling pile 1 is connected together at the top;
a waist beam 3 is arranged every 4m along the well wall from top to bottom, the section size of the waist beam 3 is 0.5. 0.5m multiplied by 0.5m wide, and the cast-in-situ pile 1 is connected together at the designed elevation;
the wall of a well between the waist beams 3 is provided with a net hanging spray concrete 5, the rock-soil body between the cast-in-place piles 1 is supported, the net hanging spray concrete 5 is effectively connected with the cast-in-place piles 1, meanwhile, the second anchor rod 42 anchors into the rock-soil body of the wall of the well through the phi 22 with the length of 6m, the specification of the reinforcing steel bar net is phi 6@15cm multiplied by 15cm, and the thickness of the spray concrete is 0.2m.
The support system and the method for the round pressure regulating well under the poor geological condition, which are provided by the invention, have good structural integrity, effectively combine the flexible support and the rigid support, can be used for pressure regulating well construction under the poor geological condition, effectively solve the problem of excavation instability of the round pressure regulating well under the poor geological condition, and ensure the stability and safety of surrounding rocks of the pressure regulating well during the construction period.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which is also intended to be covered by the present invention.
Claims (6)
1. The support system suitable for the round pressure regulating well under the poor geological condition is characterized by comprising a cast-in-place pile (1), a crown beam (2), a waist beam (3), a first anchor rod (41), a second anchor rod (42) and a net-hanging sprayed concrete (5);
a plurality of filling piles (1) are circumferentially and alternately arranged along the outer side of the excavation boundary of the pressure regulating well, so that each filling pile (1) forms an annular structure; the crown beams (2) are arranged at the top of each filling pile (1), and the tops of the filling piles (1) are connected in a circumferential direction to form a whole through the crown beams (2);
a plurality of round waist beams (3) are arranged at intervals from top to bottom in the cast-in-place piles (1) which are enclosed into a ring shape; each waist beam (3) is intersected with each cast-in-place pile (1), and the waist beams (3) and the cast-in-place piles (1) are fixed through the first anchor rods (41), and the fixing mode is as follows: along the circumferential direction of the waist beam (3), arranging a first anchor rod (41) between every two cast-in-place piles (1), wherein each first anchor rod (41) is perpendicular to the side face of the waist beam (3) facing the well, one end of each first anchor rod (41) is fixed with the waist beam (3), and the other end of each first anchor rod (41) penetrates through the waist beam (3) and then is anchored into the well wall rock soil between two adjacent cast-in-place piles (1);
the second anchor rods (42) parallel to the first anchor rods (41) are circumferentially arranged between two adjacent waist beams (3) at intervals, one end of each second anchor rod (42) is positioned between two adjacent cast-in-place piles (1), and the other end of each second anchor rod (42) is anchored into the well wall rock soil between two adjacent cast-in-place piles (1);
in the region between two adjacent waist beams (3), each cast-in-place pile (1) in the hoop is connected the piece and is arranged hang net spray concrete (5), simultaneously, make one end of second stock (42) pour in hang net spray concrete (5), realize hang net spray concrete (5) cast-in-place pile (1) with effective connection of second stock (42) forms the support whole.
2. The support system for the circular pressure regulating well under the poor geological conditions according to claim 1, wherein exposed reinforcing steel bars extend into the crown beam (2) after pile heads of the cast-in-place piles (1) are broken, and are connected and fixed with the reinforcing steel bars in the crown beam (2).
3. The support system for the round pressure regulating well under the poor geological conditions according to claim 1, wherein the steel bars of the waist beam (3) are effectively connected and fixed with the steel bars of the cast-in-place pile (1).
4. A support system for a round pressure regulating well in poor geological conditions according to claim 1, wherein one end of the first anchor rod (41) extends into the wale (3) and is effectively connected and fixed with the steel bars inside the wale (3).
5. A support system for a round pressure regulating well in poor geological conditions according to claim 1, wherein said first anchor (41) and said second anchor (42) are arranged in parallel equal length up and down.
6. A method of a support system for a round pressure regulating well in poor geological conditions according to any one of claims 1 to 5, comprising the steps of:
s1, before the excavation of a circular pressure regulating well, carrying out reinforced concrete bored cast-in-situ piles along the outer side of the excavation boundary of the circular pressure regulating well according to a designed interval, and completing the construction of the cast-in-situ piles (1);
s2, after the construction of the bored concrete pile (1) is completed, breaking the pile head concrete reserved steel bars at the top of each bored concrete pile (1); constructing the crown beam (2) at the top of the filling pile (1), enabling the top steel bars of the filling pile (1) to extend into the crown beam (2), and enabling the tops of the filling piles (1) to be connected in a circumferential mode through the crown beam (2) to form a whole;
s3, after the construction of the crown beam (2) is completed, a circular pressure regulating well is excavated, a well wall is supported by the net-hanging and spraying concrete (5) in the excavation process, the net-hanging and spraying concrete (5) is effectively connected with the cast-in-place pile (1), and a second anchor rod (42) is arranged at a design position;
s4, after the round pressure regulating well is excavated to a designed elevation, annular waist beams (3) are arranged at intervals along the well wall, the waist beams (3) are connected with the cast-in-place pile (1), and a first anchor rod (41) is arranged at a designed position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310310668.5A CN116006183B (en) | 2023-03-28 | 2023-03-28 | Supporting system and method suitable for circular pressure regulating well under poor geological conditions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310310668.5A CN116006183B (en) | 2023-03-28 | 2023-03-28 | Supporting system and method suitable for circular pressure regulating well under poor geological conditions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116006183A true CN116006183A (en) | 2023-04-25 |
| CN116006183B CN116006183B (en) | 2023-06-20 |
Family
ID=86035822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310310668.5A Active CN116006183B (en) | 2023-03-28 | 2023-03-28 | Supporting system and method suitable for circular pressure regulating well under poor geological conditions |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116006183B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202008007711U1 (en) * | 2008-06-10 | 2009-10-29 | Wieland Electric Gmbh | locking device |
| US20140255106A1 (en) * | 2013-03-07 | 2014-09-11 | Allan P. Henderson | Perimeter pile anchor foundation |
| CN204898717U (en) * | 2015-08-18 | 2015-12-23 | 中铁第一勘察设计院集团有限公司 | Shaft major structure of built -in lattice stand |
| CN105714748A (en) * | 2016-02-22 | 2016-06-29 | 中国水利水电第十一工程局有限公司 | Excavating construction method for surge shaft in gravel and sandy soil layer |
| KR20170017199A (en) * | 2015-08-05 | 2017-02-15 | 김원근 | Retaining Wal1 Construction Method Using PHC Pile |
| CN206599785U (en) * | 2017-03-03 | 2017-10-31 | 周同和 | A kind of campshed anchor draws cement earth pile diaphragm wall supporting construction |
| US20200291597A1 (en) * | 2019-08-08 | 2020-09-17 | Infrastructure Renewal Institute of Southern China | Assembled recyclable rectangular working well with preset detachable door opening and construction method thereof |
| CN215483004U (en) * | 2021-06-29 | 2022-01-11 | 中冶成都勘察研究总院有限公司 | Expansive soil stratum ultra-deep shaft supporting structure |
| CN114293567A (en) * | 2021-12-27 | 2022-04-08 | 北京建工四建工程建设有限公司 | Construction method for improving bearing capacity of natural foundation by embedding basic raft plates into slope protection piles |
| CN216892449U (en) * | 2022-03-21 | 2022-07-05 | 汕尾市广投建设工程有限公司 | Foundation pit supporting structure combining cast-in-place pile and jet grouting pile |
| CN218713052U (en) * | 2022-08-08 | 2023-03-24 | 广州市城市规划勘测设计研究院 | Deep basal pit draws stake wall supporting construction to one side |
-
2023
- 2023-03-28 CN CN202310310668.5A patent/CN116006183B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202008007711U1 (en) * | 2008-06-10 | 2009-10-29 | Wieland Electric Gmbh | locking device |
| US20140255106A1 (en) * | 2013-03-07 | 2014-09-11 | Allan P. Henderson | Perimeter pile anchor foundation |
| KR20170017199A (en) * | 2015-08-05 | 2017-02-15 | 김원근 | Retaining Wal1 Construction Method Using PHC Pile |
| CN204898717U (en) * | 2015-08-18 | 2015-12-23 | 中铁第一勘察设计院集团有限公司 | Shaft major structure of built -in lattice stand |
| CN105714748A (en) * | 2016-02-22 | 2016-06-29 | 中国水利水电第十一工程局有限公司 | Excavating construction method for surge shaft in gravel and sandy soil layer |
| CN206599785U (en) * | 2017-03-03 | 2017-10-31 | 周同和 | A kind of campshed anchor draws cement earth pile diaphragm wall supporting construction |
| US20200291597A1 (en) * | 2019-08-08 | 2020-09-17 | Infrastructure Renewal Institute of Southern China | Assembled recyclable rectangular working well with preset detachable door opening and construction method thereof |
| CN215483004U (en) * | 2021-06-29 | 2022-01-11 | 中冶成都勘察研究总院有限公司 | Expansive soil stratum ultra-deep shaft supporting structure |
| CN114293567A (en) * | 2021-12-27 | 2022-04-08 | 北京建工四建工程建设有限公司 | Construction method for improving bearing capacity of natural foundation by embedding basic raft plates into slope protection piles |
| CN216892449U (en) * | 2022-03-21 | 2022-07-05 | 汕尾市广投建设工程有限公司 | Foundation pit supporting structure combining cast-in-place pile and jet grouting pile |
| CN218713052U (en) * | 2022-08-08 | 2023-03-24 | 广州市城市规划勘测设计研究院 | Deep basal pit draws stake wall supporting construction to one side |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116006183B (en) | 2023-06-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103774675B (en) | Combined double-row-pile combined vertical prestress anchor rod supporting system and construction method thereof | |
| CN110318772B (en) | Large-span small-clearance asymmetric section tunnel supporting structure in loess area and construction method | |
| CN102758642A (en) | Long-span tunnel overlapping carrying arch structure for upper-soft and lower-hard stratum and construction method thereof | |
| CN210315186U (en) | Light arch bridge foundation structure | |
| CN110924433A (en) | Design method of subway foundation pit foot-hanging pile enclosure structure in upper-soft lower-hard rock stratum | |
| CN111560962A (en) | Backfill area foundation pit supporting structure and construction method thereof | |
| CN111364532B (en) | Existing pile foundation reinforcement method based on slurry control | |
| CN113482011B (en) | Large-diameter PHC pipe pile and cast-in-situ bored pile combined foundation pit supporting structure and method | |
| CN109882209B (en) | Bored pile pre-reinforced supporting structure of undersolidified stratum underpass tunnel and construction method | |
| JP5976373B2 (en) | Pile foundation reinforcement structure and reinforcement method | |
| JP4391292B2 (en) | Reinforcement structure for floating structures | |
| CN111236949B (en) | Small-angle cross tunnel construction method | |
| CN116006183B (en) | Supporting system and method suitable for circular pressure regulating well under poor geological conditions | |
| CN210087321U (en) | Pile foundation pre-reinforcing and supporting structure for controlling tunnel settlement | |
| CN206448285U (en) | Without bottom concrete combined type cofferdam under the conditions of formation geology | |
| CN112482367A (en) | Foundation pit support pile for replacing cast-in-place pile rock-socketed with steel pipe pile | |
| CN212612520U (en) | Combined type inclined pile anchor rod foundation pit supporting system | |
| CN211006645U (en) | Drilling bored concrete pile reinforced structure | |
| CN212129195U (en) | Newly-increased steel-pipe pile and anchor of back additional bearing platform in basis transformation | |
| CN209742922U (en) | Cast-in-place pile pre-reinforcing supporting structure for underpass tunnel in unconsolidated stratum | |
| CN217679131U (en) | Be used for reinforced (rfd) back of deep basal pit to tear bearing structure open | |
| CN217438965U (en) | Cement mixing pile supporting construction of interpolation steel floral tube | |
| CN214530693U (en) | Earth-rock combined ground layer combined pile foundation pit supporting system | |
| CN214940201U (en) | Improved foundation pit supporting structure | |
| CN217107041U (en) | Underpinning structure for pile foundation in tunnel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |