CN113089640A - Foundation treatment method - Google Patents
Foundation treatment method Download PDFInfo
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- CN113089640A CN113089640A CN202110323636.XA CN202110323636A CN113089640A CN 113089640 A CN113089640 A CN 113089640A CN 202110323636 A CN202110323636 A CN 202110323636A CN 113089640 A CN113089640 A CN 113089640A
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- grouting agent
- chloride
- foundation
- sodium
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 62
- 239000000126 substance Substances 0.000 claims abstract description 51
- 238000005553 drilling Methods 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 230000001580 bacterial effect Effects 0.000 claims description 23
- 239000001963 growth medium Substances 0.000 claims description 23
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 22
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims description 22
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 22
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 22
- 238000012258 culturing Methods 0.000 claims description 16
- 238000000855 fermentation Methods 0.000 claims description 13
- 230000004151 fermentation Effects 0.000 claims description 13
- KEZYHIPQRGTUDU-UHFFFAOYSA-N 2-[dithiocarboxy(methyl)amino]acetic acid Chemical compound SC(=S)N(C)CC(O)=O KEZYHIPQRGTUDU-UHFFFAOYSA-N 0.000 claims description 11
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 11
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 11
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims description 11
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 11
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 11
- 229930006000 Sucrose Natural products 0.000 claims description 11
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 11
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 11
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 11
- 239000002253 acid Substances 0.000 claims description 11
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 claims description 11
- 239000001110 calcium chloride Substances 0.000 claims description 11
- 229910001628 calcium chloride Inorganic materials 0.000 claims description 11
- 229920005551 calcium lignosulfonate Polymers 0.000 claims description 11
- RYAGRZNBULDMBW-UHFFFAOYSA-L calcium;3-(2-hydroxy-3-methoxyphenyl)-2-[2-methoxy-4-(3-sulfonatopropyl)phenoxy]propane-1-sulfonate Chemical compound [Ca+2].COC1=CC=CC(CC(CS([O-])(=O)=O)OC=2C(=CC(CCCS([O-])(=O)=O)=CC=2)OC)=C1O RYAGRZNBULDMBW-UHFFFAOYSA-L 0.000 claims description 11
- 239000004202 carbamide Substances 0.000 claims description 11
- 239000004568 cement Substances 0.000 claims description 11
- 239000003638 chemical reducing agent Substances 0.000 claims description 11
- ZPWVASYFFYYZEW-UHFFFAOYSA-L dipotassium hydrogen phosphate Chemical compound [K+].[K+].OP([O-])([O-])=O ZPWVASYFFYYZEW-UHFFFAOYSA-L 0.000 claims description 11
- 239000008103 glucose Substances 0.000 claims description 11
- 239000010440 gypsum Substances 0.000 claims description 11
- 229910052602 gypsum Inorganic materials 0.000 claims description 11
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 11
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 11
- 229910001629 magnesium chloride Inorganic materials 0.000 claims description 11
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 11
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 11
- 239000000377 silicon dioxide Substances 0.000 claims description 11
- 235000012239 silicon dioxide Nutrition 0.000 claims description 11
- 229910001388 sodium aluminate Inorganic materials 0.000 claims description 11
- 239000011780 sodium chloride Substances 0.000 claims description 11
- 229960004793 sucrose Drugs 0.000 claims description 11
- 238000011081 inoculation Methods 0.000 claims description 9
- 241000407778 Bacillus subtilis TO-A Species 0.000 claims description 7
- 241000606860 Pasteurella Species 0.000 claims description 7
- 229910000396 dipotassium phosphate Inorganic materials 0.000 claims description 7
- 235000019797 dipotassium phosphate Nutrition 0.000 claims description 7
- LWIHDJKSTIGBAC-UHFFFAOYSA-K potassium phosphate Substances [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims description 7
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 2
- 239000002609 medium Substances 0.000 claims description 2
- 239000001632 sodium acetate Substances 0.000 claims description 2
- 235000017281 sodium acetate Nutrition 0.000 claims description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 239000001569 carbon dioxide Substances 0.000 abstract description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 12
- 238000002360 preparation method Methods 0.000 description 6
- 238000007596 consolidation process Methods 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000010170 biological method Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009424 underpinning Methods 0.000 description 1
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
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
-
- 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
-
- 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
- C12N1/00—Microorganisms, e.g. protozoa; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/20—Bacteria; Culture media therefor
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
-
- 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
- C04B2111/70—Grouts, e.g. injection mixtures for cables for prestressed concrete
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/003—Injection of material
Abstract
The invention aims to provide a foundation treatment method, which comprises the following steps: 1) drilling a hole on the foundation to be treated; 2) injecting the prepared chemical grouting agent and the prepared biological grouting agent into the foundation through grouting equipment; 3) after the chemical grouting agent and the biological grouting agent are injected, the rigid column is inserted, and the foundation treatment method provided by the invention greatly reduces the emission of carbon dioxide, reduces the environmental pollution, saves energy and reduces emission.
Description
Technical Field
The invention relates to the field of geological engineering, in particular to a foundation treatment method.
Background
With the requirements of global environment protection and energy conservation and emission reduction, the research of a low-carbon, environment-friendly and high-efficiency foundation treatment method is particularly important, and the existing foundation treatment method mainly comprises the following steps: displacement, drainage consolidation, pour-in consolidation, underpinning, vibration compaction, ribbing, and rectification and migration.
In the method for injecting the cured material, various grouting methods are mainly used, the research on chemical grouting and microbial grouting is less, the environmental pollution can be greatly reduced by a chemical or biological method, and the energy conservation and emission reduction are realized.
Disclosure of Invention
In view of the problems in the prior art, the present invention aims to provide a method for processing a ground base, which mainly comprises the following steps:
in a first aspect, the present invention provides a method for treating a foundation, comprising: 1) drilling a hole on the foundation to be treated;
2) injecting the prepared chemical grouting agent and the prepared biological grouting agent into the foundation through grouting equipment; 3) after injecting chemical grouting agent and biological grouting agent, the rigid column is inserted into the foundation.
In a second aspect, the invention provides a chemical grouting agent, which comprises the following substances in parts by weight: 100-150 parts of cement clinker, 0.02-0.05 part of sodium aluminate, 12-28 parts of beta semi-hydrated gypsum, 0.01-0.05 part of silicon dioxide, 1-3 parts of polycarboxylic acid water reducing agent, 0.1-0.3 part of hydroxyethyl cellulose ether, 0.2-0.5 part of triethanolamine, 0.3-0.6 part of calcium lignosulfonate, 0.01-0.05 part of sodium chloride, 0.02-0.05 part of magnesium chloride, 0.07-0.09 part of calcium chloride, 0.05-0.08 part of ferric chloride and 0.05-0.08 part of sodium metasilicate pentahydrate.
Preferably, the chemical grouting agent comprises the following substances in parts by weight: 120-130 parts of cement clinker, 0.03-0.04 part of sodium aluminate, 16-20 parts of beta semi-hydrated gypsum, 0.02-0.03 part of silicon dioxide, 1-2 parts of polycarboxylic acid water reducing agent, 0.1-0.2 part of hydroxyethyl cellulose ether, 0.4-0.5 part of triethanolamine, 0.4-0.5 part of calcium lignosulfonate, 0.01-0.03 part of sodium chloride, 0.02-0.03 part of magnesium chloride, 0.08-0.09 part of calcium chloride, 0.07-0.08 part of ferric chloride and 0.06-0.07 part of sodium metasilicate pentahydrate.
Preferably, the chemical grouting agent comprises the following substances in parts by weight: 120 parts of cement clinker, 0.03 part of sodium aluminate, 18 parts of beta semi-hydrated gypsum, 0.02 part of silicon dioxide, 2 parts of polycarboxylic acid water reducing agent, 0.1 part of hydroxyethyl cellulose ether, 0.4 part of triethanolamine, 0.5 part of calcium lignosulfonate, 0.01 part of sodium chloride, 0.03 part of magnesium chloride, 0.08 part of calcium chloride, 0.08 part of ferric chloride and 0.06 part of sodium metasilicate pentahydrate
In a third aspect, the invention provides a preparation method of a biological grouting agent, which comprises the following steps:
(1) inoculating the Pasteurella pasteurianus and the Bacillus subtilis to a slant culture medium, and culturing at 25-30 ℃ for 36h to obtain activated mixed strains; (2) inoculating the activated mixed strain into a culture medium for culturing to obtain a seed solution; the culture medium comprises the following substances in parts by weight: 0.3-0.5 part of cane sugar, 5-15 parts of glucose, 0.5-2.8 parts of urea, 1-5 parts of dipotassium hydrogen phosphate, 0.1-0.3 part of magnesium sulfate and 60-80 parts of water; (3) fermentation culture: inoculating and fermenting the seed liquid obtained in the step (2) according to the inoculation amount of 5-7% to obtain fermented mixed bacterial liquid; (4) and (4) mixing the mixed bacterial liquid obtained in the step (3) with water to obtain the biological grouting agent, wherein the addition amount of the mixed bacterial liquid is 2-5%.
Preferably, the culture medium comprises the following substances in parts by weight: 0.4 part of cane sugar, 10 parts of glucose, 2 parts of urea, 3 parts of dipotassium phosphate, 0.2 part of magnesium sulfate and 78 parts of water.
Preferably, step (3) is specifically:
culturing the seed liquid obtained in the step (2) at a constant temperature of 37 ℃ according to the inoculation amount of 5 parts;
the fermentation medium comprises the following substances in parts by weight: 10-15 parts of cane sugar, 3-18 parts of glucose, 0.5-2.5 parts of sodium acetate, 0.5-2.5 parts of urea, 1-3 parts of dipotassium hydrogen phosphate, 0.01-0.05 part of magnesium sulfate and 60-80 parts of water.
Preferably, the step (4) is specifically: the amount of the mixed bacterial liquid added was 3%.
Has the advantages that:
(1) the foundation treatment method provided by the invention greatly reduces the emission of carbon dioxide, reduces the environmental pollution, saves energy and reduces emission.
(2) The foundation treatment method provided by the invention has the problems that the longer the construction time is, the lower the work efficiency is, the lower the strength is, the lower the deformation modulus is, and the unevenness is caused compared with a concrete cast-in-place pile.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for treating a foundation in accordance with an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Please refer to fig. 1
Figure 1 shows a flow diagram of a method of ground treatment,
step 101: drilling a hole on the foundation to be treated;
step 102: injecting the prepared chemical grouting agent and the prepared biological grouting agent into the foundation through grouting equipment;
step 103: the rigid column is inserted after the injection of the chemical and biological grouting agents.
The method is characterized in that a chemical grouting agent and a biological grouting agent are firstly grouted into a foundation to be treated, and then a rigid column is inserted.
Example 1:
a method of ground treatment, characterized in that it comprises the steps of:
1) drilling a hole on the foundation to be treated;
2) injecting the prepared chemical grouting agent and the prepared biological grouting agent into the foundation through grouting equipment;
3) inserting the rigid column after injecting the chemical grouting agent and the biological grouting agent;
the chemical grouting agent comprises the following substances in parts by weight: 150 parts of cement clinker, 0.05 part of sodium aluminate, 28 parts of beta semi-hydrated gypsum, 0.05 part of silicon dioxide, 3 parts of polycarboxylic acid water reducing agent, 0.3 part of hydroxyethyl cellulose ether, 0.5 part of triethanolamine, 0.6 part of calcium lignosulfonate, 0.05 part of sodium chloride, 0.05 part of magnesium chloride, 0.09 part of calcium chloride, 0.08 part of ferric chloride and 0.08 part of sodium metasilicate pentahydrate.
The preparation method of the biological grouting agent comprises the following steps:
(1) inoculating the Pasteurella pasteurianus and the Bacillus subtilis to a slant culture medium, and culturing at 25-30 ℃ for 36h to obtain activated mixed strains;
(2) inoculating the activated mixed strain into a culture medium for culturing to obtain a seed solution;
the culture medium comprises the following substances in parts by weight: 0.5 part of cane sugar, 15 parts of glucose, 2.8 parts of urea, 5 parts of dipotassium phosphate, 0.1 part of magnesium sulfate and 78 parts of water;
(3) fermentation culture: inoculating the seed liquid obtained in the step (2) according to the inoculation amount of 5% for fermentation to obtain fermented mixed bacterial liquid;
(4) and (4) mixing the mixed bacterial liquid obtained in the step (3) with water to obtain the biological grouting agent, wherein the addition amount of the mixed bacterial liquid is 2%.
Example 2
A method of ground treatment, characterized in that it comprises the steps of:
1) drilling a hole on the foundation to be treated;
2) injecting the prepared chemical grouting agent and the prepared biological grouting agent into the foundation through grouting equipment;
3) after injecting chemical grouting agent and biological grouting agent, inserting the rigid column through the deep layer;
the chemical grouting agent comprises the following substances in parts by weight: 100 parts of cement clinker, 0.02 part of sodium aluminate, 12 parts of beta semi-hydrated gypsum, 0.01 part of silicon dioxide, 1 part of polycarboxylic acid water reducing agent, 0.1 part of hydroxyethyl cellulose ether, 0.2 part of triethanolamine, 0.3 part of calcium lignosulfonate, 0.01 part of sodium chloride, 0.02 part of magnesium chloride, 0.07 part of calcium chloride, 0.05 part of ferric chloride and 0.05 part of sodium metasilicate pentahydrate.
The preparation method of the biological grouting agent comprises the following steps:
(1) inoculating the Pasteurella pasteurianus and the Bacillus subtilis to a slant culture medium, and culturing at 25-30 ℃ for 36h to obtain activated mixed strains;
(2) inoculating the activated mixed strain into a culture medium for culturing to obtain a seed solution;
the culture medium comprises the following substances in parts by weight: 0.3 part of cane sugar, 15 parts of glucose, 0.5 part of urea, 5 parts of dipotassium phosphate, 0.1 part of magnesium sulfate and 75 parts of water;
(3) fermentation culture: inoculating the seed liquid obtained in the step (2) according to the inoculation amount of 6% for fermentation to obtain fermented mixed bacterial liquid;
(4) and (4) mixing the mixed bacterial liquid obtained in the step (3) with water to obtain the biological grouting agent, wherein the addition amount of the mixed bacterial liquid is 5%.
Example 3
A method of ground treatment, characterized in that it comprises the steps of:
1) drilling a hole on the foundation to be treated;
2) injecting the prepared chemical grouting agent and the prepared biological grouting agent into the foundation through grouting equipment;
3) inserting the rigid column after injecting the chemical grouting agent and the biological grouting agent;
the chemical grouting agent comprises the following substances in parts by weight: 120 parts of cement clinker, 0.03 part of sodium aluminate, 16 parts of beta semi-hydrated gypsum, 0.02 part of silicon dioxide, 1 part of polycarboxylic acid water reducing agent, 0.12 part of hydroxyethyl cellulose ether, 0.4 part of triethanolamine, 0.4 part of calcium lignosulfonate, 0.01 part of sodium chloride, 0.02 part of magnesium chloride, 0.08 part of calcium chloride, 0.07 part of ferric chloride and 0.06 part of sodium metasilicate pentahydrate.
The preparation method of the biological grouting agent comprises the following steps:
(1) inoculating the Pasteurella pasteurianus and the Bacillus subtilis to a slant culture medium, and culturing at 25-30 ℃ for 36h to obtain activated mixed strains;
(2) inoculating the activated mixed strain into a culture medium for culturing to obtain a seed solution;
the culture medium comprises the following substances in parts by weight: 0.3 part of cane sugar, 15 parts of glucose, 0.5 part of urea, 5 parts of dipotassium phosphate, 0.1 part of magnesium sulfate and 75 parts of water;
(3) fermentation culture: inoculating the seed liquid obtained in the step (2) according to the inoculation amount of 6% for fermentation to obtain fermented mixed bacterial liquid;
(4) and (4) mixing the mixed bacterial liquid obtained in the step (3) with water to obtain the biological grouting agent, wherein the addition amount of the mixed bacterial liquid is 5%.
Example 4
A method of ground treatment, characterized in that it comprises the steps of:
1) drilling a hole on the foundation to be treated;
2) injecting the prepared chemical grouting agent and the prepared biological grouting agent into the foundation through grouting equipment;
3) inserting the rigid column after injecting the chemical grouting agent and the biological grouting agent;
the chemical grouting agent comprises the following substances in parts by weight: 130 parts of cement clinker, 0.04 part of sodium aluminate, 20 parts of beta semi-hydrated gypsum, 0.03 part of silicon dioxide, 2 parts of polycarboxylic acid water reducing agent, 0.2 part of hydroxyethyl cellulose ether, 0.5 part of triethanolamine, 0.5 part of calcium lignosulfonate, 0.01-0.03 part of sodium chloride, 0.03 part of magnesium chloride, 0.09 part of calcium chloride, 0.08 part of ferric chloride and 0.07 part of sodium metasilicate pentahydrate.
The preparation method of the biological grouting agent comprises the following steps:
(1) inoculating the Pasteurella pasteurianus and the Bacillus subtilis to a slant culture medium, and culturing at 25-30 ℃ for 36h to obtain activated mixed strains;
(2) inoculating the activated mixed strain into a culture medium for culturing to obtain a seed solution;
the culture medium comprises the following substances in parts by weight: 0.3 part of cane sugar, 15 parts of glucose, 0.5 part of urea, 5 parts of dipotassium phosphate, 0.1 part of magnesium sulfate and 75 parts of water;
(3) fermentation culture: inoculating the seed liquid obtained in the step (2) according to the inoculation amount of 6% for fermentation to obtain fermented mixed bacterial liquid;
(4) and (4) mixing the mixed bacterial liquid obtained in the step (3) with water to obtain the biological grouting agent, wherein the addition amount of the mixed bacterial liquid is 5%.
Example 5
A method of ground treatment, characterized in that it comprises the steps of:
1) drilling a hole on the foundation to be treated;
2) injecting the prepared chemical grouting agent and the prepared biological grouting agent into the foundation through grouting equipment;
3) inserting the rigid column after injecting the chemical grouting agent and the biological grouting agent;
the chemical grouting agent comprises the following substances in parts by weight: 120 parts of cement clinker, 0.03 part of sodium aluminate, 18 parts of beta semi-hydrated gypsum, 0.02 part of silicon dioxide, 2 parts of polycarboxylic acid water reducing agent, 0.1 part of hydroxyethyl cellulose ether, 0.4 part of triethanolamine, 0.5 part of calcium lignosulfonate, 0.01 part of sodium chloride, 0.03 part of magnesium chloride, 0.08 part of calcium chloride, 0.08 part of ferric chloride and 0.06 part of sodium metasilicate pentahydrate.
The preparation method of the biological grouting agent comprises the following steps:
(1) inoculating the Pasteurella pasteurianus and the Bacillus subtilis to a slant culture medium, and culturing at 25-30 ℃ for 36h to obtain activated mixed strains;
(2) inoculating the activated mixed strain into a culture medium for culturing to obtain a seed solution;
the culture medium comprises the following substances in parts by weight: 0.4 part of cane sugar, 10 parts of glucose, 2 parts of urea, 3 parts of dipotassium phosphate, 0.2 part of magnesium sulfate and 78 parts of water;
(3) fermentation culture: inoculating and fermenting the seed liquid obtained in the step (2) according to the inoculation amount of 5-7% to obtain fermented mixed bacterial liquid;
(4) and (4) mixing the mixed bacterial liquid obtained in the step (3) with water to obtain the biological grouting agent, wherein the addition amount of the mixed bacterial liquid is 2-5%.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A method of ground treatment, characterized in that it comprises the steps of:
1) drilling a hole on the foundation to be treated;
2) injecting the prepared chemical grouting agent and the prepared biological grouting agent into the foundation through grouting equipment;
3) inserting a rigid column into the foundation after injecting the chemical grouting agent and the biological grouting agent;
the chemical grouting agent comprises the following substances in parts by weight: 100-150 parts of cement clinker, 0.02-0.05 part of sodium aluminate, 12-28 parts of beta semi-hydrated gypsum, 0.01-0.05 part of silicon dioxide, 1-3 parts of polycarboxylic acid water reducing agent, 0.1-0.3 part of hydroxyethyl cellulose ether, 0.2-0.5 part of triethanolamine, 0.3-0.6 part of calcium lignosulfonate, 0.01-0.05 part of sodium chloride, 0.02-0.05 part of magnesium chloride, 0.07-0.09 part of calcium chloride, 0.05-0.08 part of ferric chloride and 0.05-0.08 part of sodium metasilicate pentahydrate.
2. The method of claim 1, wherein the chemical grouting agent comprises, in weight percent: 120-130 parts of cement clinker, 0.03-0.04 part of sodium aluminate, 16-20 parts of beta semi-hydrated gypsum, 0.02-0.03 part of silicon dioxide, 1-2 parts of polycarboxylic acid water reducing agent, 0.1-0.2 part of hydroxyethyl cellulose ether, 0.4-0.5 part of triethanolamine, 0.4-0.5 part of calcium lignosulfonate, 0.01-0.03 part of sodium chloride, 0.02-0.03 part of magnesium chloride, 0.08-0.09 part of calcium chloride, 0.07-0.08 part of ferric chloride and 0.06-0.07 part of sodium metasilicate pentahydrate.
3. The method of claim 1, wherein the chemical grouting agent comprises, in weight percent: 120 parts of cement clinker, 0.03 part of sodium aluminate, 18 parts of beta semi-hydrated gypsum, 0.02 part of silicon dioxide, 2 parts of polycarboxylic acid water reducing agent, 0.1 part of hydroxyethyl cellulose ether, 0.4 part of triethanolamine, 0.5 part of calcium lignosulfonate, 0.01 part of sodium chloride, 0.03 part of magnesium chloride, 0.08 part of calcium chloride, 0.08 part of ferric chloride and 0.06 part of sodium metasilicate pentahydrate.
4. The method of claim 1, wherein the method of preparing the bio-grouting agent comprises the steps of:
(1) inoculating the Pasteurella pasteurianus and the Bacillus subtilis to a slant culture medium, and culturing at 25-30 ℃ for 36h to obtain activated mixed strains;
(2) inoculating the activated mixed strain into a culture medium for culturing to obtain a seed solution;
the culture medium comprises the following substances in parts by weight: 0.3-0.5 part of cane sugar, 5-15 parts of glucose, 0.5-2.8 parts of urea, 1-5 parts of dipotassium hydrogen phosphate, 0.1-0.3 part of magnesium sulfate and 60-80 parts of water;
(3) fermentation culture: inoculating and fermenting the seed liquid obtained in the step (2) according to the inoculation amount of 5-7% to obtain fermented mixed bacterial liquid;
(4) and (4) mixing the mixed bacterial liquid obtained in the step (3) with water to obtain the biological grouting agent, wherein the addition amount of the mixed bacterial liquid is 2-5%.
5. The method of claim 4, wherein the culture medium comprises, in weight percent: 0.4 part of cane sugar, 10 parts of glucose, 2 parts of urea, 3 parts of dipotassium phosphate, 0.2 part of magnesium sulfate and 78 parts of water.
6. The method according to claim 4, wherein step (3) is specifically:
culturing the seed liquid obtained in the step (2) at a constant temperature of 37 ℃ according to the inoculation amount of 5 parts;
the fermentation medium comprises the following substances in parts by weight: 10-15 parts of cane sugar, 3-18 parts of glucose, 0.5-2.5 parts of sodium acetate, 0.5-2.5 parts of urea, 1-3 parts of dipotassium hydrogen phosphate, 0.01-0.05 part of magnesium sulfate and 60-80 parts of water.
7. The method according to claim 4, characterized in that the step (4) is in particular:
the amount of the mixed bacterial liquid added was 3%.
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| CN107603637A (en) * | 2017-10-19 | 2018-01-19 | 朱东洋 | A kind of preparation method of biological soil curing agent |
| CN108863147A (en) * | 2018-07-26 | 2018-11-23 | 湖南省水利水电科学研究院 | A kind of injecting paste material additive and its application |
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| JP2002242173A (en) * | 2001-02-13 | 2002-08-28 | Shimizu Corp | Chemical grouting method |
| JP2002302933A (en) * | 2001-04-09 | 2002-10-18 | Shimoda Gijutsu Kenkyusho:Kk | Grout injection strengthening construction method for structure foundation |
| CN104631430B (en) * | 2014-12-29 | 2016-06-29 | 南京林业大学 | A kind of method of microorganism slip casting sand drain soft soil foundation |
| CN106013051A (en) * | 2016-06-08 | 2016-10-12 | 深圳市宏业基基础工程有限公司 | Special clay curing liquid deep stirring method |
| CN108911568B (en) * | 2018-07-26 | 2021-01-22 | 湖南腾达岩土工程技术有限公司 | Grouting material additive and application thereof |
| CN110130318A (en) * | 2019-05-24 | 2019-08-16 | 南京林业大学 | A kind of construction method of microorganism mixing-filling stake |
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| CN107603637A (en) * | 2017-10-19 | 2018-01-19 | 朱东洋 | A kind of preparation method of biological soil curing agent |
| CN108863147A (en) * | 2018-07-26 | 2018-11-23 | 湖南省水利水电科学研究院 | A kind of injecting paste material additive and its application |
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