CN107200521B - Preparation method of trench digging and wall protecting slurry for sand layer geological underground continuous wall - Google Patents
Preparation method of trench digging and wall protecting slurry for sand layer geological underground continuous wall Download PDFInfo
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- CN107200521B CN107200521B CN201710601130.4A CN201710601130A CN107200521B CN 107200521 B CN107200521 B CN 107200521B CN 201710601130 A CN201710601130 A CN 201710601130A CN 107200521 B CN107200521 B CN 107200521B
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- slurry
- clay
- wall
- bentonite
- water
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- 239000002002 slurry Substances 0.000 title claims abstract description 92
- 239000004576 sand Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000000440 bentonite Substances 0.000 claims abstract description 33
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 33
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 33
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 28
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000004927 clay Substances 0.000 claims abstract description 21
- 238000003756 stirring Methods 0.000 claims abstract description 17
- 230000005484 gravity Effects 0.000 claims abstract description 16
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 15
- 239000010428 baryte Substances 0.000 claims abstract description 15
- 229910052601 baryte Inorganic materials 0.000 claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 14
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 11
- 235000017550 sodium carbonate Nutrition 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/001—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing unburned clay
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/10—Mortars, concrete or artificial stone characterised by specific physical values for the viscosity
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to the technical field of underground engineering construction, and provides a preparation method of a dado slurry for grooving underground continuous walls of sand beds, wherein the dado slurry has a specific gravity of 1.2-1.4 g/cm3, a viscosity of 23-40 s and a sand content of less than 5%, and comprises the following steps: step 1, bentonite: water in a weight ratio of 1: 1-3, uniformly stirring in a slurry box, and storing and fermenting for 24-48 hours to obtain bentonite slurry; step 2, using clay: water: soda ash: the barite is 100: 200-250: 1-2: 1-3, and uniformly stirring in a slurry tank to obtain clay slurry; and 3, mixing the bentonite slurry and the clay slurry to prepare the retaining wall slurry, wherein the water-material ratio of the retaining wall slurry is controlled to be more than 60: 40 and less than 70: 30, the wall protection slurry contains 0.15 to 0.4 percent of soda ash and 0.15 to 0.6 percent of barite. The wall protection slurry prepared by the invention has higher specific gravity and viscosity stability, and can be used for wall protection with better quality in grooving under the geology that the grooving thickness is larger than 1m and the grooving depth is larger than 35 m.
Description
Technical Field
The invention relates to the technical field of underground engineering construction, in particular to retaining wall slurry for underground continuous wall construction.
Background
In the construction process of general underground continuous wall, sectional grooving is mostly adopted at the early stage, and then a reinforcement cage is inserted into the grooved section and poured and mixedThe concrete is usually used for protecting the wall by adopting slurry in the process of excavating the groove in sections, and for a common argillaceous stratum, the specific gravity of the commonly used wall-protecting slurry is 1.05-1.2 g/cm3Viscosity of 16s to 25s and sand content of<5 percent. However, for grooving under the geology that the grooving thickness is larger than 1m, the grooving depth is larger than 35m, and the sand layer and the pebble layer are thicker, the retaining wall mud is required to have higher specific gravity and viscosity stability.
Disclosure of Invention
The invention aims to provide a preparation method of the dado slurry for the trench digging of the underground continuous wall in the sand layer geology, and the prepared dado slurry has high specific gravity and high viscosity so as to adapt to the construction of the sand layer geology of 10-30 m and the pebble layer geology of 10-20 m.
In order to achieve the purpose, the invention adopts the following technical scheme.
The preparation method of the dado slurry for the trench digging of the geological underground continuous wall of the sand bed comprises the following step of preparing the dado slurry with the specific gravity of 1.2-1.4 g/cm3Viscosity of 23-40 s, sand content<5%, which comprises the following steps.
Step 1, preparing bentonite slurry, namely preparing bentonite slurry by: water in a weight ratio of 100: mixing the materials according to the proportion of 100-300, uniformly stirring the materials in a slurry box, and storing and fermenting the materials for 24-48 hours to obtain the bentonite slurry.
Step 2, preparing clay slurry, wherein the clay: water: the weight ratio of the calcined soda is 100: 200-250: 1-2, and uniformly stirring in a slurry box to obtain clay slurry; the quality requirement of the clay is as follows: mixing the following raw materials in percentage by weight: the weight ratio of water is 1: 2 the specific gravity of the prepared slurry is more than 1.2g/cm3Viscosity of 18 s-20 s, sand content<5％。
Step 3, preparing the retaining wall slurry, uniformly mixing 100 parts of the bentonite slurry obtained in the step 1 and 150-250 parts of the clay slurry obtained in the step 2 to obtain the retaining wall slurry, wherein the water-material ratio (water: bentonite + clay) of the retaining wall slurry is controlled to be more than 60: 40 and less than 70: 30, the wall protection slurry contains 0.15 to 0.4 percent of sodium carbonate.
The optimization scheme is as follows: in step 2, barite, i.e. in the form of clay: water: soda ash: the barite is 100: 200-250: 1-2: 1-3, and uniformly stirring in a slurry tank to obtain clay slurry; the wall protection slurry prepared in the step 3 also contains 0.15 to 0.6 percent of barite.
The invention has the following prominent substantive characteristics and remarkable progress:
the trenching dado slurry for the geological underground continuous wall of the sand layer, which is prepared by the invention, has higher specific gravity and viscosity stability, and can perform dado with better quality on trenching under the geology that the trenching thickness is larger than 1m, the trenching depth is larger than 35m, and the sand layer and the pebble layer are thicker; the invention has the characteristics of simple and practical operation method, sufficient raw material sources, low cost and the like 5.
Detailed Description
The present invention is further illustrated by the following examples.
Example 1
A preparation method of the mud for the trench digging and wall protection of the geological underground continuous wall of the sand layer comprises the following steps.
Step 1, preparing bentonite slurry
Mixing bentonite and water according to a weight ratio of 1: 1, uniformly stirring in a slurry box, and storing and fermenting for 24-48 hours to obtain the bentonite slurry.
Step 2, preparing clay slurry by using clay: water: soda ash: the barite is 100: 200: 1: 1.5, and uniformly stirring in a slurry tank to obtain clay slurry;
the quality requirement of the clay is as follows: mixing the following raw materials in percentage by weight: the weight ratio of water is 1: 2 the specific gravity of the prepared slurry is more than 1.2g/cm3Viscosity of 18 s-20 s, sand content<5％。
Step 3, preparing the wall protection slurry
Uniformly mixing 150 parts of bentonite slurry obtained in the step 1 and 300 parts of clay slurry obtained in the step 2 to obtain wall protection slurry, wherein the water-material ratio of the wall protection slurry is 61: 39 the index of the wall-protecting slurry of this example is 1.35g/cm in specific gravity3Viscosity 28s, sand content<5%, soda 0.2% and barite 0.3%.
Example 2
A preparation method of the mud for the trench digging and wall protection of the geological underground continuous wall of the sand layer comprises the following steps.
Step 1, preparing bentonite slurry
Mixing bentonite and water according to a weight ratio of 1: 1.5, uniformly stirring in a slurry box, and storing and fermenting for 24-36 hours to obtain the bentonite slurry.
Step 2, preparing clay slurry by using clay: water: soda ash: the barite is 100: 250: 1: 1.3, and evenly stirring in a slurry tank to obtain clay slurry, wherein the quality requirement of the clay is the same as that of the clay in example 1.
Step 3, preparing the wall protection slurry
Uniformly mixing 175 parts of bentonite slurry obtained in the step 1 and 350 parts of clay slurry obtained in the step 2 to obtain wall protection slurry, wherein the water-material ratio (the ratio of water to bentonite and clay) of the wall protection slurry is 68: 32, the wall-protecting slurry of the present example was found to have a specific gravity of 1.29g/cm3Viscosity 26s, sand content<5%, soda 0.2% and barite 0.25%.
Example 3
A preparation method of the mud for the trench digging and wall protection of the geological underground continuous wall of the sand layer comprises the following steps.
Step 1, preparing bentonite slurry
Mixing bentonite and water according to a weight ratio of 1: 2, uniformly stirring in a slurry box, and storing and fermenting for 24-48 hours to obtain the bentonite slurry.
Step 2, preparing clay slurry clay: water: soda ash: the barite is 100: 250: 2: 3, and evenly stirring in a slurry tank to obtain clay slurry, wherein the quality requirement of the clay is the same as that of the clay in the example 1.
Step 3, preparing the wall protection slurry
Uniformly mixing 180 parts of bentonite slurry obtained in the step 1 with 350 parts of clay slurry obtained in the step 2 to obtain wall protection slurry, wherein the water-material ratio of the wall protection slurry is 70: 30, the wall-protecting slurry of the present example has an index of specific gravity of 1.24g/cm3Viscosity 23s, sand content<5%, soda 0.38% and barite 0.57%.
Example 4
A preparation method of the mud for the trench digging and wall protection of the geological underground continuous wall of the sand layer comprises the following steps.
Step 1, preparing bentonite slurry
Mixing bentonite and water according to a weight ratio of 1: 3, uniformly stirring in a slurry box, and storing and fermenting for 24-36 hours to obtain the bentonite slurry.
Step 2, preparing clay slurry clay: water: soda ash: the barite is 100: 200: 2: 3, and evenly stirring in a slurry tank to obtain clay slurry, wherein the quality requirement of the clay is the same as that of the clay in the example 1.
Step 3, preparing the wall protection slurry
Uniformly mixing 200 parts of bentonite slurry obtained in the step 1 with 300 parts of clay slurry obtained in the step 2 to obtain wall protection slurry, wherein the water-material ratio of the wall protection slurry is 70: 30, the index of the wall-protecting slurry of this example is a specific gravity of 1.25g/cm3Viscosity 24s, sand content<5%, soda 0.40% and barite 0.60%.
Example 5
A preparation method of the mud for the trench digging and wall protection of the geological underground continuous wall of the sand layer comprises the following steps.
Step 1, preparing bentonite slurry
Mixing bentonite and water according to a weight ratio of 3: 5, uniformly stirring in a slurry box, and storing and fermenting for 24-36 hours to obtain the bentonite slurry.
Step 2, preparing clay slurry by using clay: water: the weight ratio of the calcined soda is 100: 250: 2, and evenly stirring in a slurry tank to obtain clay slurry, wherein the quality requirement of the clay is the same as that of the clay in the example 1.
Step 3, preparing the wall protection slurry
Uniformly mixing 200 parts of bentonite slurry obtained in the step 1 and 350 parts of clay slurry obtained in the step 2 to obtain wall protection slurry, wherein the water-material ratio of the wall protection slurry is 68: 32, the wall-protecting slurry of this example was found to have a specific gravity of 1.28g/cm3Viscosity 25s, sand content<5 percent and 0.40 percent of sodium carbonate.
The retaining wall slurry of the embodiments 1-5 is successfully applied to the construction of the underground continuous wall with the depth of 55m into the groove retaining wall in the sand layer geology of 10-30 m or the pebble layer geology of 10-20 m, and the effect is satisfactory.
Claims (1)
1. The preparation method of the dado slurry for the trench digging of the geological underground continuous wall of the sand bed comprises the following step of preparing the dado slurry with the specific gravity of 1.2-1.4 g/cm3Viscosity of 23-40 s, sand content<5% and is characterized by comprising the following steps:
step 1, preparing bentonite slurry
The preparation method comprises the following steps of (1) mixing bentonite: water in a weight ratio of 100: mixing the materials according to a proportion of 100-300, uniformly stirring the materials in a slurry box, and storing and fermenting the materials for 24-48 hours to obtain bentonite slurry;
step 2, preparing clay slurry
Mixing the following raw materials in percentage by weight: water: soda ash: the barite is 100: 200-250: 1-2: 1-3, and uniformly stirring in a slurry tank to obtain clay slurry;
the quality requirement of the clay is as follows: mixing the following raw materials in percentage by weight: the weight ratio of water is 1: 2 the specific gravity of the prepared slurry is more than 1.2g/cm3Viscosity of 18 s-20 s, sand content<5％；
Step 3, preparing the wall protection slurry
Uniformly mixing 100 parts of bentonite slurry obtained in the step 1 and 150-250 parts of clay slurry obtained in the step 2 to obtain wall protection slurry, wherein the water-material ratio of the wall protection slurry is controlled to be more than 60: 40 and less than 70: 30, the wall protection slurry contains 0.15 to 0.4 percent of soda ash and 0.15 to 0.6 percent of barite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710601130.4A CN107200521B (en) | 2017-07-21 | 2017-07-21 | Preparation method of trench digging and wall protecting slurry for sand layer geological underground continuous wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710601130.4A CN107200521B (en) | 2017-07-21 | 2017-07-21 | Preparation method of trench digging and wall protecting slurry for sand layer geological underground continuous wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107200521A CN107200521A (en) | 2017-09-26 |
| CN107200521B true CN107200521B (en) | 2022-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710601130.4A Active CN107200521B (en) | 2017-07-21 | 2017-07-21 | Preparation method of trench digging and wall protecting slurry for sand layer geological underground continuous wall |
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| CN (1) | CN107200521B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111718699A (en) * | 2019-10-23 | 2020-09-29 | 沈阳工业大学 | Drilling pile-forming mud for retaining wall in calcareous cemented geological area and preparation method thereof |
| CN111675510A (en) * | 2020-05-28 | 2020-09-18 | 浙江土工岩土科技有限公司 | Slurry for construction of pebble and boulder strata |
| CN111763040A (en) * | 2020-05-28 | 2020-10-13 | 浙江土工岩土科技有限公司 | Slurry for underground diaphragm wall near river and sea |
| CN113045252B (en) * | 2021-03-26 | 2022-09-02 | 中铁十六局集团北京轨道交通工程建设有限公司 | Environment-friendly wall protection slurry for underground continuous wall and preparation method thereof |
| CN116025282A (en) * | 2022-12-17 | 2023-04-28 | 中交建筑集团有限公司 | Composite hole-forming construction method of ultra-large diameter cast-in-place piles in multi-solitary rock strata |
| CN117447129A (en) * | 2023-09-06 | 2024-01-26 | 中交三航局第三工程有限公司 | Underground diaphragm wall grooving and wall protecting slurry material based on straw powder reinforcement and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1063790A (en) * | 1975-03-03 | 1979-10-09 | Donald L. Whitfill | Water base drilling mud composition comprising zinc sulfate and an alkaline earth metal oxide or hydroxide |
| CN102226077A (en) * | 2011-04-22 | 2011-10-26 | 吴云 | Construction slurry for rotary pile drilling |
| CN103755318A (en) * | 2014-01-03 | 2014-04-30 | 上海市基础工程集团有限公司 | Underground diaphragm wall grooving wall-protection slurry and method in red sandstone pebble bed |
-
2017
- 2017-07-21 CN CN201710601130.4A patent/CN107200521B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1063790A (en) * | 1975-03-03 | 1979-10-09 | Donald L. Whitfill | Water base drilling mud composition comprising zinc sulfate and an alkaline earth metal oxide or hydroxide |
| CN102226077A (en) * | 2011-04-22 | 2011-10-26 | 吴云 | Construction slurry for rotary pile drilling |
| CN103755318A (en) * | 2014-01-03 | 2014-04-30 | 上海市基础工程集团有限公司 | Underground diaphragm wall grooving wall-protection slurry and method in red sandstone pebble bed |
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| CN107200521A (en) | 2017-09-26 |
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