CN113417273A - Silt stratum underground pipe gallery foundation sand replacement and filling reinforcement method - Google Patents
Silt stratum underground pipe gallery foundation sand replacement and filling reinforcement method Download PDFInfo
- Publication number
- CN113417273A CN113417273A CN202110726184.XA CN202110726184A CN113417273A CN 113417273 A CN113417273 A CN 113417273A CN 202110726184 A CN202110726184 A CN 202110726184A CN 113417273 A CN113417273 A CN 113417273A
- Authority
- CN
- China
- Prior art keywords
- pipe gallery
- sand
- filling
- eicp
- backfilling
- 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
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/14—Hydrolases (3)
- C12N9/78—Hydrolases (3) acting on carbon to nitrogen bonds other than peptide bonds (3.5)
- C12N9/80—Hydrolases (3) acting on carbon to nitrogen bonds other than peptide bonds (3.5) acting on amide bonds in linear amides (3.5.1)
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y305/00—Hydrolases acting on carbon-nitrogen bonds, other than peptide bonds (3.5)
- C12Y305/01—Hydrolases acting on carbon-nitrogen bonds, other than peptide bonds (3.5) in linear amides (3.5.1)
- C12Y305/01005—Urease (3.5.1.5)
Abstract
The invention discloses a sand-filling and reinforcing method for a foundation of a silt stratum underground pipe gallery, which comprises the following steps of preparing urease extracting solution on site; secondly, performing pipe gallery foundation sand replacement and filling pretreatment; thirdly, replacing and filling sand for reinforcing the pipe gallery foundation; firstly, constructing an underground supporting structure below a pipe gallery foundation, and excavating sludge at the lower part of the pipe gallery foundation in an enclosure area; building a wood template for assembling bolts in an area to be backfilled; carrying out EICP layered reinforcement backfilling on the pretreated replacement-filled sea sand in a wood template until the backfilling reaches a specified elevation; and (4) completely removing the wood formwork after the backfilling is finished, and removing the underground supporting structure below the pipe gallery foundation and constructing the main structure of the pipe gallery after the sand-filling-replacing cushion layer EICP of the same section of pipe gallery is reinforced in a layering manner and backfilled and segmented. The existing sand replacement and filling reinforcement method is improved, and the special underground geological condition of the silt stratum is combined, so that the method is creatively applied to underground pipe gallery foundation reinforcement of the silt stratum.
Description
Technical Field
The invention belongs to the field of engineering construction processes, and particularly relates to a silt stratum underground pipe gallery foundation sand replacement and reinforcement method.
Background
The coastal region has a large area of deep soft soil stratum or a marine phase deposition sludge layer formed by hydraulic filling and land reclamation due to the special geographical position, and has the main characteristics of large water content, high porosity ratio, easiness in compression, difficulty in permeation and weak bearing performance. The construction of the comprehensive pipe gallery in the stratum often has a plurality of problems, such as great difficulty in dewatering the foundation pit, easy sideslip of a supporting pile of the foundation pit, insufficient stability of a side slope of the foundation pit, difficult control of uneven settlement of a base and the like, in consideration of insufficient bearing capacity of the base, the lower covering soft soil is required to be replaced and filled with sandy soil and then a pipe gallery is manufactured, and after the construction of the pipe gallery is finished, the periphery and the upper part are refilled with sandy soil, so the compactness of the backfilled sandy soil and the compactness and compressive strength of a sand filling cushion layer at the lower part of the pipe gallery are very critical, if the process construction method is improperly used, the liquefaction effect of the loose saturated sandy soil has a great influence on the anti-seismic stability of the pipe gallery, at present, the foundation reinforcement of the construction of the underground pipe gallery is mainly implemented by adopting the modes of a watertight method, a mechanical compaction method, a manual vibration method and the like, but the foundation reinforcement method has a great influence on special geological condition, if the silt formation is not used at all.
Disclosure of Invention
The invention aims to provide a silt stratum underground pipe gallery foundation sand-filling reinforcing method, which is creatively applied to underground pipe gallery foundation reinforcement of silt stratums by improving the existing sand-filling reinforcing method and combining special underground geological conditions of the silt stratums.
Therefore, the technical scheme adopted by the invention is as follows: a silt stratum underground pipe gallery foundation sand-filling and reinforcing method comprises the following steps:
firstly, preparing urease extracting solution on site;
selecting a grinder to grind the completely dried soybean seed coats on a pipe gallery construction site, and sieving the ground soybean seed coat powder; mixing the soybean seed coat powder with water according to the weight ratio of 1: after configuring leaching liquor in a transparent barrel according to the weight ratio of 8-12, stirring until no obvious unstirred soybean seed coat powder clusters appear; finally, standing the transparent barrel for 10-14 hours until obvious layering phenomenon occurs again, wherein soybean seed coat sediments are arranged at the bottom of the transparent barrel, and the extracted light yellow urease extracting solution is arranged at the upper part of the transparent barrel;
secondly, performing pipe gallery foundation sand replacement and filling pretreatment;
preparing a cementing solution according to the proportion of 0.8-1.2 mol/L calcium chloride and 0.8-1.2 mol/L urea, and mixing the prepared cementing solution with the urease extracting solution prepared in the first step according to the volume ratio of 0.9-1.1: 0.9-1.1, mixing to obtain an EICP treatment fluid, and mixing the sea reclamation sand and the EICP treatment fluid according to a volume ratio of 1: 0.8-0.95 of mixing; finally, stirring to ensure that all the sea reclamation sand particles can be fully mixed and wetted with the EICP treatment liquid, wherein the stirring time is 20-40 min, and standing for 20-40 min after stirring to obtain pretreated sea reclamation sand;
thirdly, replacing and filling sand for reinforcing the pipe gallery foundation;
firstly, performing underground supporting structure construction below a pipe gallery foundation, forming frame-type rigid enclosure by sludge below the pipe gallery foundation, and excavating sludge below the pipe gallery foundation in an enclosure area;
building a wood formwork assembled by bolts in an area to be backfilled, wherein the wood formwork is long-strip-shaped, and the length of the wood formwork is matched with the width of a pipe gallery, so that a plurality of rectangular frame grids are formed in the width direction of the pipe gallery, and the wood formwork is required to be built in a segmented mode in sequence along the length direction of the pipe gallery;
carrying out EICP layered reinforcement backfilling on the pretreated filling sea sand prepared in the second step in a wood template, wherein after natural curing is carried out for 10-14 h, each backfilling layer is subjected to primary spraying treatment on an EICP treatment liquid on a backfill layer by using a spraying device, after the natural curing is carried out for 10-14 h, the secondary spraying treatment is carried out on the EICP treatment liquid on the backfill layer by using the spraying device, and the natural curing is carried out for 10-14 h; adopting the processing mode to carry out EICP layered reinforcement backfilling on the next sand-filled cushion layer until backfilling reaches a specified elevation;
and after the backfilling is finished, completely removing the wood template, using the wood template as an EICP (enhanced concrete filler concrete) layered reinforcement backfilling of the next section of the sand-filling replacing cushion layer, and after the sand-filling replacing cushion layer EICP layered reinforcement backfilling of the same pipe gallery is segmented, removing the underground supporting structure below the pipe gallery foundation and constructing the main structure of the pipe gallery.
Preferably, in the first step, the urease extract activity of the soybean seed coat prepared on site is measured by a conductivity method to be 3.0 mmol/(L.min) or more.
More preferably, in the step one, a 350S type water-cooling pulverizer is adopted to perform repeated pulverization for three times; sieving with 100-mesh square-hole sieve, and configuring 6 transparent barrels on site with single capacity of 280L; mixing the soybean seed husk powder with water according to the weight ratio of 1: 10, proportioning, adopting an industrial vertical stirrer, setting the rotating speed of the stirrer to be 500rpm/min, setting the stirring time to be 30 minutes, closing a water barrel cover on the top of the transparent barrel to prevent dust after stirring is finished, and standing for 12 hours.
Preferably, in the step one, after the standing is finished, firstly, extracting clear liquid at the upper part of the transparent barrel, and cleaning sediments at the bottom of the transparent barrel and sediments remained on the stirrer; and then, filtering the supernatant extracted from the transparent barrel by using gauze, and further filtering soybean seed coat residues in the supernatant to ensure that no redundant impurities exist in the urease extracting solution. Further improves the purity and ensures that the EICP reaction is better carried out.
Preferably, in the second step, a cementing solution is prepared according to the proportion of 1mol/L calcium chloride and 1mol/L urea, and the volume ratio of the cementing solution to the urease extracting solution is 1: 1, mixing to obtain an EICP treatment fluid, and preparing three large-capacity reaction boxes with the volume of 400L as a container for pretreating sea sand to be changed and filled, wherein the sea sand to be changed and the EICP treatment fluid are mixed according to the volume ratio of 1: 0.9, mixing; and (3) manually stirring by using a shovel for 30min, and standing for 30min after stirring to obtain the pretreated sea sand for replacement and filling.
Preferably, in the third step, the time of each natural curing is 12 hours, the EICP layered reinforcement backfilling is carried out in three times in the wood formwork, the reinforcement backfilling height of each time is equal, and the length, width and height of each grid in the wood formwork are 1m × 1m × 1 m.
The invention has the beneficial effects that:
(1) the urease extracting solution is prepared in a large scale on a construction site, and a large amount of urease solution is the premise of reinforcing the sand-filled cushion layer at the lower part of the pipe gallery; when the urease extracting solution is prepared, a pulverizer is adopted to perform on-site pulverization and sieving, and processes such as leaching liquor preparation, stirring, standing and layering are performed in a transparent barrel, so that no redundant impurities exist in the urease extracting solution, the EICP reaction is prevented from being influenced, and the activity of the urease extracting solution is high;
(2) mixing the prepared urease extracting solution with a cementing solution with the same volume in a large-capacity reaction box, adding sand to be replaced and filled into the large-capacity reaction box, stirring, and ensuring that the sand to be replaced and filled is fully contacted and completely wetted with an EICP reaction solution (the urease extracting solution and the cementing solution), so that pretreated replacement and filling sea sand is prepared, wherein the pretreatment of sand replacement and filling of a pipe gallery foundation is the first guarantee for ensuring the uniform reinforcement effect;
(3) the method comprises the steps of firstly constructing an underground supporting structure below a pipe gallery foundation, then excavating sludge at the lower part of the pipe gallery foundation in an enclosure area, and finally constructing a wood template assembled by bolts in an area to be backfilled and backfilling in a layered mode, so that the construction is safe and reliable; the wood template is assembled, built and dismantled by the bolts, so that the construction efficiency is high;
(4) the wood formwork is internally provided with a plurality of rectangular frame grids, the wood formwork is built in a segmented mode along the length direction of the pipe gallery, the grids are backfilled, the area of each grid is small, the good stability of each layer of the sand filled and replaced on the pipe gallery foundation is ensured during backfilling, the backfilling thickness is uniform, urease solution among sand particles can fully react with cementing liquid, and sufficient calcium carbonate precipitation is generated;
(5) and carrying out two times of EICP (EICP) reprocessing on each layer of the replacement and filling sand, standing after each EICP processing, combining layered backfilling and grid backfilling, and enhancing the reinforcing effect of the lower backfilled sand cushion layer while ensuring the reinforcing effect of each layer, thereby ensuring the uniform reinforcing effect.
Drawings
FIG. 1 shows a process of sand-filling and reinforcing of a foundation of a sludge stratum underground pipe gallery.
Fig. 2 is a top simplified view of a wooden form.
Figure 3 is an illustration of layered backfill within each cell of a wood form.
Detailed Description
The invention will be further illustrated by the following examples in conjunction with the accompanying drawings:
a silt stratum underground pipe gallery foundation sand-filling and reinforcing method comprises the following steps:
first, an in situ urease extract is prepared.
And (3) selecting a grinder to grind the completely dried soybean seed coats on the construction site of the pipe gallery, and sieving the ground soybean seed coat powder. Preferably, a 350S type water-cooling pulverizer is adopted for carrying out three times of repeated pulverization; sieving with 100 mesh square mesh sieve to remove soybean seed coat fragments with low pulverization degree and large volume.
Mixing the soybean seed coat powder with water according to the weight ratio of 1: and (3) configuring the leaching liquor in a transparent barrel according to the weight ratio of 8-12, and stirring until no obvious unstirred soybean seed coat powder clusters appear. Preferably, 6 transparent barrels are arranged on site, and the single volume is 280L for storing the soybean seed husk powder solution; the soybean seed coat powder and water are preferably mixed in a ratio of 1: 10 (namely 100g of soybean seed coat powder is dissolved in 1L of clear water), and adding sufficient soybean seed coat powder into a barrel in advance and then adding clear water with corresponding volume. The stirring was carried out by using an industrial vertical stirrer, the rotation speed of the stirrer was set at 500rpm/min, and the stirring time was set at 30 minutes. The stirrer is always kept at the central position of the transparent barrel in the stirring process, and the stirring efficiency is guaranteed; a transparent barrel is used as a containing barrel, so that the observation is convenient; after stirring, the phenomenon of liquid and solid layering which is obvious before can be observed to almost disappear, the soybean seed coat powder at the bottom of the clear water and the transparent barrel has no obvious layering phenomenon, and the whole water storage barrel can observe a tawny solution.
And finally, standing the transparent barrel for 10-14 hours until obvious layering phenomenon occurs again, wherein soybean seed coat sediments are arranged at the bottom of the transparent barrel, and the extracted faint yellow urease extracting solution is arranged at the upper part of the transparent barrel. Preferably, after stirring, the top of the transparent barrel is covered with a water barrel cover for dust prevention, dust and sand on a construction site are isolated, and after standing for 12 hours, an obvious layering phenomenon can be seen.
After standing, firstly extracting clear liquid at the upper part of the transparent barrel, and cleaning sediments at the bottom of the transparent barrel and sediments remained on the stirrer; and filtering the supernatant extracted from the transparent barrel by using gauze, further filtering soybean seed coat residues existing in the supernatant to ensure that no redundant impurities exist in the urease extracting solution, and determining the activity of the urease extracting solution of the soybean seed coats prepared on site by adopting a conductivity method to be more than 3.0 mmol/(L.min).
And secondly, performing sand replacement and filling pretreatment on the pipe gallery foundation.
Preparing the cementing liquid according to the mixture ratio of 0.8-1.2 mol/L calcium chloride and 0.8-1.2 mol/L urea. Preferably, the cementing liquid is prepared according to the mixture ratio of 1mol/L calcium chloride and 1mol/L urea.
And (3) mixing the prepared cementing liquid with the urease extracting solution prepared in the first step according to the volume ratio of 0.9-1.1: 0.9-1.1, and mixing to obtain the EICP treatment solution. Preferably, the volume ratio of the cementing liquid to the urease extracting solution is 1: 1 to obtain EICP treatment fluid, and three large-capacity reaction tanks with the volume of 400L are equipped as holding containers for pre-treating and replacing sea sand.
And mixing the sea reclamation sand and the EICP treatment fluid according to the volume ratio of 1: 0.8 to 0.95 of the above-mentioned components. Preferably, the sea reclamation sand and the EICP treatment fluid are mixed according to the volume ratio of 1: 0.9 mixing was performed.
And finally, stirring to ensure that all the sea reclamation sand particles can be fully mixed and wetted with the EICP treatment liquid, wherein the stirring time is 20-40 min, and standing for 20-40 min after the stirring is finished to obtain the pretreated sea reclamation sand. Preferably, the method comprises the steps of manually stirring by using a shovel for 30min, and standing for 30min after stirring to obtain the pretreated sea sand for replacement and filling.
And thirdly, replacing and filling sand for reinforcing the pipe gallery foundation.
As shown in fig. 1, firstly, constructing an underground supporting structure 1 below a pipe gallery foundation, forming frame-type rigid enclosure by sludge below the pipe gallery foundation, combining the underground supporting structure 1 by a steel sheet pile 1a and a steel support 1b, and excavating sludge below the pipe gallery foundation in an enclosure area; underground supporting structure 1 forms frame-type rigid enclosure, can ensure that the pipe gallery foundation can not appear collapsing after the silt is excavated. But before the main structure 2 of the pipe gallery is constructed, the underground supporting structure 1 needs to be dismantled.
Carry out the plank sheathing of bolt assembly and build in waiting to backfill the region, as shown in fig. 2, the plank sheathing is rectangular shape, and the length of plank sheathing matches with the width of piping lane to form a plurality of rectangle frame lattices in the width direction of piping lane, need carry out the building of plank sheathing in proper order in segments along the length direction of piping lane.
Carrying out EICP layered reinforcement backfilling on the pretreated filling-changed sea sand prepared in the second step in a wood template, wherein after natural curing is carried out for 10-14 h, EICP treatment liquid is sprayed on a backfill layer for the first time by using a spraying device after one layer is backfilled, and after the natural curing is carried out for 10-14 h, EICP treatment liquid is sprayed on the backfill layer for the second time by using the spraying device, and the natural curing is carried out for 10-14 h; in total, two EICP retreatments per replacement sand bedding were required. The spraying device is preferably a knapsack electric sprayer.
And E, performing EICP layered reinforcement backfilling on the next sand-filled cushion layer by adopting the treatment mode until the next sand-filled cushion layer is backfilled to a specified elevation.
And after the backfilling is finished, completely removing the wood template, and using the wood template as an EICP layered reinforcement backfilling of the next section of sand-filled bedding layer. The sand-filling cushion layer EICP that changes of same festival piping lane is consolidated in layers and needs to be accomplished through the segmentation of plank sheathing, treats that the sand-filling cushion layer EICP that changes of same festival piping lane consolidates in layers and backfills the segmentation and accomplish the back, demolishs the underground supporting structure of piping lane ground below, executes the major structure of piping lane.
In the third step, preferably, the time of each natural curing is 12 hours, EICP layering reinforcing and backfilling is carried out in the wood template for three times, the reinforcing and backfilling height of each time is equal, and the length, width and height of each grid in the wood template are 1m multiplied by 1 m.
After the wooden template is dismantled, the pretreated replacement and filling sea sand prepared in the second step is preferably injected at the position where the dividing joint is left.
Claims (8)
1. A silt stratum underground pipe gallery foundation sand-filling and reinforcing method is characterized by comprising the following steps:
firstly, preparing urease extracting solution on site;
selecting a grinder to grind the completely dried soybean seed coats on a pipe gallery construction site, and sieving the ground soybean seed coat powder; mixing the soybean seed coat powder with water according to the weight ratio of 1: after configuring leaching liquor in a transparent barrel according to the weight ratio of 8-12, stirring until no obvious unstirred soybean seed coat powder clusters appear; finally, standing the transparent barrel for 10-14 hours until obvious layering phenomenon occurs again, wherein soybean seed coat sediments are arranged at the bottom of the transparent barrel, and the extracted light yellow urease extracting solution is arranged at the upper part of the transparent barrel;
secondly, performing pipe gallery foundation sand replacement and filling pretreatment;
preparing a cementing solution according to the proportion of 0.8-1.2 mol/L calcium chloride and 0.8-1.2 mol/L urea, and mixing the prepared cementing solution with the urease extracting solution prepared in the first step according to the volume ratio of 0.9-1.1: 0.9-1.1, mixing to obtain an EICP treatment fluid, and mixing the sea reclamation sand and the EICP treatment fluid according to a volume ratio of 1: 0.8-0.95 of mixing; finally, stirring to ensure that all the sea reclamation sand particles can be fully mixed and wetted with the EICP treatment liquid, wherein the stirring time is 20-40 min, and standing for 20-40 min after stirring to obtain pretreated sea reclamation sand;
thirdly, replacing and filling sand for reinforcing the pipe gallery foundation;
firstly, performing underground supporting structure construction below a pipe gallery foundation, forming frame-type rigid enclosure by sludge below the pipe gallery foundation, and excavating sludge below the pipe gallery foundation in an enclosure area;
building a wood formwork assembled by bolts in an area to be backfilled, wherein the wood formwork is long-strip-shaped, and the length of the wood formwork is matched with the width of a pipe gallery, so that a plurality of rectangular frame grids are formed in the width direction of the pipe gallery, and the wood formwork is required to be built in a segmented mode in sequence along the length direction of the pipe gallery;
carrying out EICP layered reinforcement backfilling on the pretreated filling sea sand prepared in the second step in a wood template, wherein after natural curing is carried out for 10-14 h, each backfilling layer is subjected to primary spraying treatment on an EICP treatment liquid on a backfill layer by using a spraying device, after the natural curing is carried out for 10-14 h, the secondary spraying treatment is carried out on the EICP treatment liquid on the backfill layer by using the spraying device, and the natural curing is carried out for 10-14 h; adopting the processing mode to carry out EICP layered reinforcement backfilling on the next sand-filled cushion layer until backfilling reaches a specified elevation;
and after the backfilling is finished, completely removing the wood template, using the wood template as an EICP (enhanced concrete filler concrete) layered reinforcement backfilling of the next section of the sand-filling replacing cushion layer, and after the sand-filling replacing cushion layer EICP layered reinforcement backfilling of the same pipe gallery is segmented, removing the underground supporting structure below the pipe gallery foundation and constructing the main structure of the pipe gallery.
2. The silt stratum underground pipe gallery foundation sand-filling reinforcement method according to claim 1, characterized in that: in the first step, the activity of the urease extracting solution of the soybean seed coat prepared on site is determined to be more than 3.0 mmol/(L.min) by adopting a conductivity method.
3. The silt stratum underground pipe gallery foundation sand-filling reinforcement method according to claim 1, characterized in that: in the first step, repeatedly crushing for three times by adopting a 350S type water-cooling crusher; sieving with 100-mesh square-hole sieve, and configuring 6 transparent barrels on site with single capacity of 280L; mixing the soybean seed husk powder with water according to the weight ratio of 1: 10, proportioning, adopting an industrial vertical stirrer, setting the rotating speed of the stirrer to be 500rpm/min, setting the stirring time to be 30 minutes, closing a water barrel cover on the top of the transparent barrel to prevent dust after stirring is finished, and standing for 12 hours.
4. The silt stratum underground pipe gallery foundation sand-filling reinforcement method according to claim 1, characterized in that: in the first step, after standing, firstly extracting clear liquid at the upper part of a transparent barrel, and cleaning sediments at the bottom of the transparent barrel and sediments remained on a stirrer; and then, filtering the supernatant extracted from the transparent barrel by using gauze, and further filtering soybean seed coat residues in the supernatant to ensure that no redundant impurities exist in the urease extracting solution.
5. The silt stratum underground pipe gallery foundation sand-filling reinforcement method according to claim 1, characterized in that: in the second step, preparing a cementing liquid according to the proportion of 1mol/L calcium chloride and 1mol/L urea, wherein the volume ratio of the cementing liquid to the urease extracting solution is 1: 1, mixing to obtain an EICP treatment fluid, and preparing three large-capacity reaction boxes with the volume of 400L as a container for pretreating sea sand to be changed and filled, wherein the sea sand to be changed and the EICP treatment fluid are mixed according to the volume ratio of 1: 0.9, mixing; and (3) manually stirring by using a shovel for 30min, and standing for 30min after stirring to obtain the pretreated sea sand for replacement and filling.
6. The silt stratum underground pipe gallery foundation sand-filling reinforcement method according to claim 1, characterized in that: in the third step, the time of each natural curing is 12 hours, EICP layered reinforcement backfilling is carried out in the wood template for three times, the reinforcement backfilling height of each time is equal, and the length, width and height of each grid in the wood template are 1m multiplied by 1 m.
7. The silt stratum underground pipe gallery foundation sand-filling reinforcement method according to claim 1, characterized in that: in the third step, after the wood formwork is dismantled, the pretreated replacement and filling sea sand prepared in the second step is preferably injected at the position where the dividing joint is left.
8. The silt stratum underground pipe gallery foundation sand-filling reinforcement method according to claim 1, characterized in that: in the third step, the spraying device adopts a knapsack electric sprayer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110726184.XA CN113417273A (en) | 2021-06-29 | 2021-06-29 | Silt stratum underground pipe gallery foundation sand replacement and filling reinforcement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110726184.XA CN113417273A (en) | 2021-06-29 | 2021-06-29 | Silt stratum underground pipe gallery foundation sand replacement and filling reinforcement method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113417273A true CN113417273A (en) | 2021-09-21 |
Family
ID=77717181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110726184.XA Pending CN113417273A (en) | 2021-06-29 | 2021-06-29 | Silt stratum underground pipe gallery foundation sand replacement and filling reinforcement method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113417273A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437337A (en) * | 2013-08-21 | 2013-12-11 | 国家电网公司 | Method for reinforcing soft soil foundation in cushion layer replacement mode |
| CN108468325A (en) * | 2018-03-23 | 2018-08-31 | 葛洲坝中固科技股份有限公司 | A kind of large area borders on the sea beach ooze rapid curing construction method |
| CN108824111A (en) * | 2018-06-25 | 2018-11-16 | 重庆大学 | It is a kind of that real method is hit based on biological cementing road foundation |
| CN109097061A (en) * | 2018-08-07 | 2018-12-28 | 河海大学 | A kind of agent and its preparation method and application of checking winds and fixing drifting sand of the urase containing plant |
| CN209941688U (en) * | 2019-02-21 | 2020-01-14 | 中亿丰建设集团股份有限公司 | Construction of foundation ditch under apron divides storehouse layering backfill structure |
| CN110698104A (en) * | 2019-10-24 | 2020-01-17 | 太原理工大学 | Method for repairing cement-based material cracks by using soybean urease |
| US20210189238A1 (en) * | 2018-09-10 | 2021-06-24 | Arizona Board Of Regents On Behalf Of Arizona State University | Biocementation systems and methods |
| CN113185981A (en) * | 2021-04-12 | 2021-07-30 | 三峡大学 | Urease reinforcing liquid for slope protection and preparation and construction method thereof |
-
2021
- 2021-06-29 CN CN202110726184.XA patent/CN113417273A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103437337A (en) * | 2013-08-21 | 2013-12-11 | 国家电网公司 | Method for reinforcing soft soil foundation in cushion layer replacement mode |
| CN108468325A (en) * | 2018-03-23 | 2018-08-31 | 葛洲坝中固科技股份有限公司 | A kind of large area borders on the sea beach ooze rapid curing construction method |
| CN108824111A (en) * | 2018-06-25 | 2018-11-16 | 重庆大学 | It is a kind of that real method is hit based on biological cementing road foundation |
| CN109097061A (en) * | 2018-08-07 | 2018-12-28 | 河海大学 | A kind of agent and its preparation method and application of checking winds and fixing drifting sand of the urase containing plant |
| US20210189238A1 (en) * | 2018-09-10 | 2021-06-24 | Arizona Board Of Regents On Behalf Of Arizona State University | Biocementation systems and methods |
| CN209941688U (en) * | 2019-02-21 | 2020-01-14 | 中亿丰建设集团股份有限公司 | Construction of foundation ditch under apron divides storehouse layering backfill structure |
| CN110698104A (en) * | 2019-10-24 | 2020-01-17 | 太原理工大学 | Method for repairing cement-based material cracks by using soybean urease |
| CN113185981A (en) * | 2021-04-12 | 2021-07-30 | 三峡大学 | Urease reinforcing liquid for slope protection and preparation and construction method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102146679B (en) | Construction method for complex geological section earth pressure balance shield passing middle air shaft | |
| CN102383413B (en) | Method for constructing strengthened saturated-flow plastic silt soft soil foundation | |
| CN102926398B (en) | A kind of for Salt Lake Area iron tower of power transmission line bolts of inclined column type anti-corrosion foundation construction method | |
| CN105220674A (en) | Deep soft foundation reinforcing and processing method | |
| CN106836244A (en) | A kind of method of friction pile dative guest barricade joint protection steep slope subgrade high | |
| KR20160080028A (en) | Multipurpose artifical island | |
| CN109385992A (en) | The construction method of pore-forming in artificial Backfilled Stone Layer | |
| CN110080169A (en) | A kind of construction method reclaimed fields from the sea utilized based on basement | |
| CN210827555U (en) | Ecological reinforced earth retaining wall slope protection that red mudstone packed | |
| CN113417273A (en) | Silt stratum underground pipe gallery foundation sand replacement and filling reinforcement method | |
| CN111455976A (en) | Construction method of self-setting mortar impervious wall by grooving method | |
| CN109183778A (en) | A method of utilizing coarse grain coral reef reinforcing liquefied foundation | |
| CN107558490A (en) | Composite foundation reinforcement rockfill barrier wall structure and construction method | |
| CN114182748A (en) | Jointless continuous in-situ impervious wall construction device and curtain construction method | |
| CN107299620A (en) | Sluice main structure construction scheme | |
| CN207419517U (en) | Composite foundation reinforcement rockfill barrier wall structure | |
| CN202689032U (en) | Retaining wall for supporting side slope | |
| CN117344692B (en) | Silt bag layout method taking underground fresh water storage into consideration by artificial island | |
| CN205530298U (en) | Ecological revetment block in ion type rare earth mine mountain and ecological bank protection system thereof | |
| Jiang et al. | Research progress of soft soil foundation treatment technology | |
| CN216865206U (en) | Retaining wall of rare earth heap leaching pond leaching field slag heap side slope ecological protection slope | |
| CN219621795U (en) | Reconstruction structure for repairing abandoned mine by utilizing engineering slag soil | |
| KR200316779Y1 (en) | Reclaimed land formed in the soft ground of the seashore using dredged soil and sand so as to reinforce bearing power | |
| CN114319294B (en) | Method for constructing water-lack layer by using poor engineering soil to inhibit plant growth | |
| CN108547281A (en) | Accelerate the discharge structure and its construction method of dyke strengthening by warping engineering silt back of the body body consolidation |
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 |