CN113513051A - Underground diaphragm wall groove section construction slurry performance test device and test method thereof - Google Patents
Underground diaphragm wall groove section construction slurry performance test device and test method thereof Download PDFInfo
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- CN113513051A CN113513051A CN202110433860.4A CN202110433860A CN113513051A CN 113513051 A CN113513051 A CN 113513051A CN 202110433860 A CN202110433860 A CN 202110433860A CN 113513051 A CN113513051 A CN 113513051A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
- E02D5/187—Bulkheads or similar walls made solely of concrete in situ the bulkheads or walls being made continuously, e.g. excavating and constructing bulkheads or walls in the same process, without joints
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Abstract
The invention relates to a device and a method for testing the performance of slurry for underground continuous wall groove section construction, wherein a box cover is arranged at the top of a test box body, continuous walls for testing are arranged on two sides in the test box body, and a continuous wall groove for testing is formed between the continuous walls on the two sides; the middle part of the box cover is provided with a pulp inlet pipe, a pulp outlet pipe and a pressure increasing pipe in a penetrating way, the bottoms of the pulp inlet pipe and the pulp outlet pipe extend to the bottom of the continuous wall groove, and the box cover is also provided with a pressure gauge for detecting the internal pressure of the continuous wall groove; the mud performance test device also comprises a groove forming device for forming a continuous wall and a continuous wall groove in the box of the test box body; the grooving device comprises two parallel partition plates, and a plurality of supporting parts used for adjusting and supporting the distance between the two partition plates are arranged between the two partition plates. The invention can test the conditions of slurry seepage and mud skin formation in the grooving process of the underground diaphragm wall, and more intuitively research the performance of the slurry in the groove section of the diaphragm wall.
Description
Technical Field
The invention relates to a mud performance test device, in particular to a mud performance test device for underground continuous wall groove section construction.
Background
The underground continuous wall is a foundation engineering, and adopts a trenching machine on the ground, under the condition of slurry wall protection, deep trenches are excavated along the peripheral axes of the deep trenches, after the trenches are cleared, a reinforcement cage is hung in the trenches, then underwater concrete is poured by a conduit method to build a unit trench section, and the process is carried out section by section, and a continuous reinforced concrete wall is built underground to be used as a structure for intercepting water, preventing seepage, bearing and retaining water. The method has the characteristics of small construction vibration, high wall rigidity, good integrity, high construction speed, capability of saving earth and stone, capability of being used for constructing deep foundation pit supports in dense building groups and carrying out reverse construction, capability of being used under various geological conditions and the like, and is increasingly and widely applied to urban subways and deep foundation engineering.
Along with the development and utilization of underground space, underground diaphragm wall engineering is more and more dark, and the soil layer condition that is located is also more and more complicated, in the work progress, gets the mud of the different degree of depth in the groove section and carries out performance index test, carries out the developments regulation and control to the mud performance, guarantees that engineering safety goes on smoothly key.
The existing underground diaphragm wall slurry performance can not be observed and researched intuitively, performance research is generally carried out in a sampling mode, the accuracy of researching the underground diaphragm wall groove section construction slurry performance through sampling is not high, and the underground diaphragm wall groove section construction slurry performance test device and the test method thereof are needed to be provided.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a device and a method for testing the performance of slurry for underground continuous wall channel section construction.
In order to achieve the purpose, the invention adopts the following technical scheme:
the device for testing the performance of the slurry for the construction of the underground continuous wall groove section comprises a test box body, a box cover arranged at the top of the test box body, continuous wall bodies for testing arranged at two sides in the test box body, and a continuous wall groove for testing formed between the continuous wall bodies at the two sides; the middle part of case lid runs through and is equipped with into thick liquid pipe, play thick liquid pipe and pressure tube, advance the bottom of thick liquid pipe, play thick liquid pipe and extend to the bottom in diaphragm wall groove, still be equipped with the manometer that is used for detecting diaphragm wall inslot pressure on the case lid.
Further, the mud performance test device also comprises a groove forming device for forming a continuous wall and a continuous wall groove in the box of the test box body; the grooving device comprises two parallel partition plates, and a plurality of supporting parts used for adjusting and supporting the distance between the two partition plates are arranged between the two partition plates.
Furthermore, the supporting part comprises a pipe body and a pipe body, the pipe body is fixed on the partition plate on one side, the pipe body is fixed on the partition plate on the other side, the pipe body is inserted into the pipe body, a boss is arranged at one end, inserted into the pipe body, of the pipe body, and a locking bolt with a handle penetrates through the boss.
Further, the width and the depth of the partition plate are the same as those of the interior of the test box body.
Further, one side of the test box body is provided with an observation window, and toughened glass with a transparent structure is fixedly arranged in the observation window.
Furthermore, one side of the observation window is provided with scales.
A test method of a device for testing the performance of slurry constructed by adopting an underground diaphragm wall groove section comprises the following steps:
the method comprises the following steps that firstly, the width of a test continuous wall groove is adjusted, locking bolts on supporting parts are loosened, the width of two partition plates of a grooving device is adjusted according to model requirements, then the length of each supporting part is fixed through the locking bolts, and finally the distance between the two partition plates is determined to be the width of the test continuous wall groove;
a second step, after the first step is finished, putting the grooving device into the middle part of the test box body, and completely embedding the two clapboards into the test box body, wherein the test box body is divided into three parts by the two clapboards, the middle part is a continuous wall groove for testing, and the two sides are accommodating cavities of a continuous wall body for testing;
after the second step is finished, soil layers are placed into the containing cavities on the two sides of the test box body, soil samples with different layer structures are placed according to test requirements and tamped, the thickness of each layer of soil sample can be observed according to the observation window, the thickness is determined through the scales on the side portions of the soil sample, and finally the continuous wall for the test is formed;
after the third step is finished, pulling out the two partition plates, sealing the box cover, connecting a slurry inlet pipe to a slurry inlet pump, connecting a slurry outlet pipe to a slurry outlet pump, connecting a booster pipe to a booster pump, pumping construction slurry into the continuous wall groove through the slurry inlet pipe, discharging the slurry through the slurry outlet pipe after the required slurry liquid level is pumped into the continuous wall groove, and boosting the pressure of the continuous wall groove according to the depth of the test slurry through the booster pump connected with the booster pipe;
and fifthly, observing, recording and testing the construction slurry performance of the underground continuous wall groove section through an observation window.
The invention has the beneficial effects that: the invention can test the underground continuous wall groove section through the test box, and test the pressure of the wall groove section at the underground depth in an external pressure applying mode, thereby testing the performance of the underground continuous wall groove section in the slurry in construction.
Drawings
FIG. 1 is a schematic perspective exploded view of a slurry property testing apparatus according to the present invention;
FIG. 2 is a plan view of a trenching apparatus in the slurry property testing apparatus of the present invention;
FIG. 3 is a schematic structural diagram of a continuous wall for testing prepared by combining a testing box body and a grooving device in the invention;
FIG. 4 is a schematic structural view of the test box with a continuous wall for testing in the invention;
FIG. 5 is a schematic view of the internal structure of the test box with the test continuous wall;
labeled as: the device comprises a test box body 1, a box cover 2, a partition plate 3, a continuous wall 4, a continuous wall groove 5, an observation window 11, scales 12, a slurry inlet pipe 21, a slurry outlet pipe 22, a pressure increasing pipe 23, a pressure gauge 24, a fixing screw 25, a pipe body 31, a rod body 32, a locking bolt 33 and a boss 34.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. These examples are intended to illustrate the invention and are not intended to limit the scope of the invention. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided" and "connected" are to be interpreted broadly, e.g. as a fixed connection, a detachable connection or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they 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.
The structural features of the present invention will now be described in detail with reference to the accompanying drawings.
Referring to fig. 1-5, the device for testing the performance of slurry for the construction of the underground continuous wall groove section comprises a test box body 1, wherein two sides in the test box body 1 are provided with continuous wall bodies 4 for testing, and a continuous wall groove 5 for testing is arranged between the continuous wall bodies 4 at the two sides;
the top of the test box body 1 is provided with a box cover 2 in a packaging way through a fixing screw 25, the middle part of the box cover 2 is provided with a slurry inlet pipe 21, a slurry outlet pipe 22 and a pressure increasing pipe 23 in a penetrating way, the bottoms of the slurry inlet pipe 21 and the slurry outlet pipe 22 extend to the bottom of the continuous wall groove 5, and the box cover 2 is also provided with a pressure gauge 24 for detecting the internal pressure of the continuous wall groove 5;
the invention also comprises a grooving device for forming the continuous wall 4 and the continuous wall groove 5 in the test box body 1;
the grooving device comprises two parallel partition plates 3, and a plurality of supporting parts for adjusting and supporting the distance between the two partition plates 3 are arranged between the two partition plates 3.
The device for testing the performance of the slurry for the construction of the underground continuous wall groove section has a simple structure and is easy to operate, on one hand, the underground continuous wall groove section is tested through the test box 1, the pressure of the wall groove section in the underground depth is tested in an external pressure applying mode, the performance of the slurry of the underground continuous wall groove section in the construction process is further tested, on the other hand, the groove width of the test wall groove section can be adjusted through the groove forming device, test wall grooves with different sizes are tested, and continuous walls with various soil layers and different thicknesses are tested through a soil sample embedding method, so that the performance of the slurry of the underground continuous wall groove section in different regions in the construction process is tested, and the research on the performance of the slurry in the continuous wall groove section is more convenient and intuitive.
Referring to fig. 2, the support portion further includes a tube 31 and a rod 32, the tube 31 is fixed on one of the partitions 3, the rod 32 is fixed on the other partition 3, the rod 32 is inserted into the tube 31, a boss 34 is provided at one end of the tube 31 where the rod 32 is inserted, and a locking bolt 33 with a handle is provided on the boss 34 in a penetrating manner.
Set up the supporting part, can adjust distance between two baffles 3 to realize the regulation of experimental wall groove section notch size, during the regulation, only need not hard up locking bolt 33, insert the body of rod 32 into body of pipe 31 or take the body of rod 32 out from body of pipe 31, locking bolt 33 once more, and then realize the adjustment to distance between two baffles 3.
Referring to fig. 3, further, the width and depth of the partition 3 are the same as those of the inside of the test chamber 1.
The arrangement can ensure that the partition plate 3 is completely inserted into the test box body 1, so that a gap is avoided between the test box body 1 and the partition plate 3, and the formation of the continuous wall slot 5 is facilitated.
Referring to fig. 1, 3 and 4, further, an observation window 11 is arranged on one side of the test box body 1, and toughened glass with a transparent structure is fixedly arranged in the observation window 11.
The observation window 11 is arranged, so that experimental observation of the continuous wall 4 and the continuous wall groove 5 in the test box body 1 and performance research of slurry injection and slurry in the groove section are facilitated.
Referring to fig. 1, 3 and 4, further, a scale 12 is provided on one side of the observation window 11.
The scales 12 are arranged to facilitate the determination of the thickness of the soil sample layer in the continuous wall 4 and the determination of the grouting depth.
The invention also provides a test method of the device for testing the performance of the slurry for the construction of the groove section of the underground diaphragm wall, which comprises the following steps:
(1) adjusting the width of the test continuous wall groove, loosening the locking bolts 33 on the supporting parts, adjusting the widths of the two partition plates 3 of the grooving device according to the requirement of a model, fixing the length of each supporting part through the locking bolts 33, and finally determining the distance between the two partition plates 3 as the width of the test continuous wall groove;
(2) after the step (1) is finished, the grooving device is placed in the middle of the test box body 1, the two partition plates 3 are completely embedded into the test box body 1, at the moment, the test box body 1 is divided into three parts by the two partition plates 3, the middle part is a continuous wall groove 5 for testing, and the two sides are accommodating cavities of a continuous wall body 4 for testing;
(3) after the step (2) is finished, soil layers are placed into the containing cavities on the two sides of the test box body 1, soil samples with different layer structures are placed according to test requirements and tamped, the thickness of each layer of soil sample can be observed according to the observation window 11, the thickness is determined through the scales 12 on the side part of the soil sample, and finally the continuous wall body 4 for the test is formed;
(4) after the step (3) is completed, the two partition plates 3 are pulled out, the box cover 2 is sealed, the slurry inlet pipe 21 is connected to a slurry inlet pump, the slurry outlet pipe 22 is connected to a slurry outlet pump, the booster pipe 23 is connected to a booster pump, construction slurry is pumped into the continuous wall groove 5 through the slurry inlet pipe 21, after the required slurry liquid level is pumped into the continuous wall groove 5, slurry is discharged through the slurry outlet pipe 22, and the booster pump connected with the booster pipe 23 is used for boosting the continuous wall groove 5 according to the depth of the test slurry;
(5) and finally, observing and recording the construction slurry performance of the underground continuous wall groove section through an observation window 11.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The utility model provides an underground continuous wall groove section construction mud performance test device, includes test box (1), case lid (2) that the top of test box (1) set up, its characterized in that: two sides of the interior of the test box body (1) are provided with continuous wall bodies (4) for testing, and a continuous wall groove (5) for testing is formed between the continuous wall bodies (4) at the two sides; the middle part of case lid (2) is run through and is equipped with into thick liquid pipe (21), play thick liquid pipe (22) and pressure boost pipe (23), the bottom that advances thick liquid pipe (21), play thick liquid pipe (22) extends to the bottom in diaphragm wall groove (5), still be equipped with manometer (24) that are used for detecting diaphragm wall groove (5) internal pressure on case lid (2).
2. The underground continuous wall groove section construction mud performance test device of claim 1, characterized in that: the mud performance test device also comprises a groove forming device for testing the inside of the box body (1) to form a continuous wall body (4) and a continuous wall groove (5); the grooving device comprises two parallel partition plates (3), and a plurality of supporting parts used for adjusting and supporting the distance between the two partition plates (3) are arranged between the two partition plates (3).
3. The underground continuous wall groove section construction mud performance test device of claim 2, characterized in that: the supporting part comprises a pipe body (31) and a pipe body (32), the pipe body (31) is fixed on the partition board (3) on one side, the pipe body (32) is fixed on the partition board (3) on the other side, the pipe body (32) is inserted into the pipe body (31), a boss (34) is arranged at one end, inserted into the pipe body (32), of the pipe body (31), and a locking bolt (33) with a handle penetrates through the boss (34).
4. The underground continuous wall groove section construction mud performance test device of claim 2, characterized in that: the width and the depth of the partition plate (3) are the same as those of the interior of the test box body (1).
5. The underground continuous wall groove section construction mud performance test device of claim 2, characterized in that: one side of the test box body (1) is provided with an observation window (11), and toughened glass with a transparent structure is fixed in the observation window (11).
6. The underground continuous wall groove section construction mud performance test device of claim 5, characterized in that: and scales (12) are arranged on one side of the observation window (11).
7. A test method for adopting the underground continuous wall channel section construction slurry performance test device of any one of claims 2 to 6 is characterized by comprising the following steps:
the method comprises the following steps that firstly, the width of a test continuous wall groove is adjusted, locking bolts (33) on supporting parts are loosened, the width of two partition plates (3) of a grooving device is adjusted according to model requirements, then the length of each supporting part is fixed through the locking bolts (33), and finally the distance between the two partition plates (3) is determined to be the width of the test continuous wall groove;
a second step, after the first step is finished, placing the grooving device in the middle of the test box body (1), and completely embedding the two partition plates (3) into the test box body (1), wherein the test box body (1) is divided into three parts by the two partition plates (3), the middle part is a continuous wall groove (5) for testing, and the two sides are accommodating cavities of a continuous wall body (4) for testing;
thirdly, after the second step is finished, soil layers are placed into the containing cavities on the two sides of the test box body (1), soil samples with different layer structures are placed according to test requirements and tamped, the thickness of each layer of soil sample can be observed according to the observation window (11), the thickness of each layer of soil sample can be determined through the scales (12) on the side portion of the layer of soil sample, and finally the continuous wall body (4) for the test is formed;
after the third step is finished, pulling out the two partition plates (3), sealing the box cover (2), connecting a slurry inlet pipe (21) to a slurry inlet pump, connecting a slurry outlet pipe (22) to a slurry outlet pump, connecting a booster pipe (23) to a booster pump, pumping construction slurry into the continuous wall groove (5) through the slurry inlet pipe (21), discharging the slurry through the slurry outlet pipe (22) after the required slurry liquid level is pumped into the continuous wall groove (5), and boosting the slurry into the continuous wall groove (5) through the booster pump connected with the booster pipe (23) according to the depth of the test slurry;
and fifthly, observing, recording and testing the performance of the construction slurry of the underground continuous wall groove section through an observation window (11).
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| CN202110433860.4A CN113513051B (en) | 2021-04-22 | 2021-04-22 | Underground diaphragm wall groove section construction slurry performance test device and test method thereof |
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| CN202110433860.4A CN113513051B (en) | 2021-04-22 | 2021-04-22 | Underground diaphragm wall groove section construction slurry performance test device and test method thereof |
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| CN113513051B CN113513051B (en) | 2023-03-24 |
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| JP2003041243A (en) * | 2001-04-27 | 2003-02-13 | Terunaito:Kk | Thickening agent for excavation slurry, excavation slurry using the same, and cast-in-place underground pile execution method and underground continuous wall execution method using the slurry |
| CN101324062A (en) * | 2008-07-24 | 2008-12-17 | 上海交通大学 | Testing method and apparatus of breast wall slurry pressure in underground continuous wall trench construction |
| CN109424008A (en) * | 2017-09-05 | 2019-03-05 | 成都美吉房地产营销策划有限公司 | To the detection method of the slot section after continuous wall trench underground in construction |
| CN111472394A (en) * | 2020-04-24 | 2020-07-31 | 三峡大学 | Device for rapidly measuring mud wall protection performance and using method |
| CN111721926A (en) * | 2020-06-12 | 2020-09-29 | 上海市基础工程集团有限公司 | Cement soil continuous steel wall construction cement soil state change test observation device |
| CN212260847U (en) * | 2020-03-09 | 2021-01-01 | 山东省物化探勘查院 | Multifunctional surveying and mapping platform |
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2021
- 2021-04-22 CN CN202110433860.4A patent/CN113513051B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003041243A (en) * | 2001-04-27 | 2003-02-13 | Terunaito:Kk | Thickening agent for excavation slurry, excavation slurry using the same, and cast-in-place underground pile execution method and underground continuous wall execution method using the slurry |
| CN101324062A (en) * | 2008-07-24 | 2008-12-17 | 上海交通大学 | Testing method and apparatus of breast wall slurry pressure in underground continuous wall trench construction |
| CN109424008A (en) * | 2017-09-05 | 2019-03-05 | 成都美吉房地产营销策划有限公司 | To the detection method of the slot section after continuous wall trench underground in construction |
| CN212260847U (en) * | 2020-03-09 | 2021-01-01 | 山东省物化探勘查院 | Multifunctional surveying and mapping platform |
| CN111472394A (en) * | 2020-04-24 | 2020-07-31 | 三峡大学 | Device for rapidly measuring mud wall protection performance and using method |
| CN111721926A (en) * | 2020-06-12 | 2020-09-29 | 上海市基础工程集团有限公司 | Cement soil continuous steel wall construction cement soil state change test observation device |
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