CN110845213B - Weak stratum tunnel advanced deep hole grouting reinforcement material and preparation method thereof - Google Patents
Weak stratum tunnel advanced deep hole grouting reinforcement material and preparation method thereof Download PDFInfo
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- CN110845213B CN110845213B CN201911202345.4A CN201911202345A CN110845213B CN 110845213 B CN110845213 B CN 110845213B CN 201911202345 A CN201911202345 A CN 201911202345A CN 110845213 B CN110845213 B CN 110845213B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
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- 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
- C04B28/24—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 alkyl, ammonium or metal silicates; containing silica sols
- C04B28/26—Silicates of the alkali metals
Abstract
The invention discloses a soft stratum tunnel advanced deep hole grouting reinforcement material and a preparation method thereof, belonging to the technical field of grouting materials and being prepared from the following raw materials in parts by weight: 500 portions of cement, 300 portions of waste building sand, 300 portions of 200 portions of waste building sand, 250 portions of fly ash, 50 to 80 portions of calcium chloride, 60 to 90 portions of water glass, 40 to 60 portions of hydroxymethyl cellulose and 600 portions of water; according to the invention, calcium chloride and water glass are added to generate gel, so that the gel property of a material system is improved, and hydroxymethyl cellulose is added to further improve the viscosity of the system, the components can form an interactive network structure in a slurry system, and the material can be quickly condensed after being injected, so that the invasion of external moisture is prevented, and the anti-dispersion property of the whole slurry system is improved; the cement is assisted by the building waste sand and stone and the fly ash, so that the use amount of the cement is reduced, waste materials are changed into things of value, and the cement is economical and environment-friendly.
Description
Technical Field
The invention belongs to the technical field of grouting materials, and particularly relates to a weak stratum tunnel advanced deep hole grouting reinforcement material and a preparation method thereof.
Background
During tunnel construction, various complex topographic challenges are often met, particularly, when the tunnel penetrates through a weak stratum, tunnel collapse is easily caused if no pretreatment is carried out due to loose geology and poor soil bonding capability, and tunnel construction safety is seriously threatened. In order to solve the problems, the conventional method adopts a grouting method, namely, before the tunnel is excavated, grouting reinforcement is performed on a weak stratum, and slurry permeates into the stratum and is solidified, so that the originally loose stratum is solidified into a whole, the mechanical property and the permeation resistance of the stratum are improved, and collapse accidents in the tunnel excavation process can be effectively prevented. The current slurry can permeate into a geological layer and improve the mechanical property of weak geology, but has the following problems: when the material is injected into a stratum with more water, the material is easily diluted when meeting water, so that the material proportion is changed, and the material performance is reduced; the raw material price is higher, has improved construction cost.
Disclosure of Invention
The invention aims to provide a reinforcement material for advance deep hole grouting of a tunnel in a weak stratum and a preparation method thereof aiming at the defects in the prior art.
The invention aims to provide a soft stratum tunnel advanced deep hole grouting reinforcement material which is prepared from the following raw materials in parts by weight: 500 portions of cement, 300 portions of waste building sand and 300 portions of sand, 250 portions of fly ash, 50 to 80 portions of calcium chloride, 60 to 90 portions of water glass, 40 to 60 portions of hydroxymethyl cellulose and 600 portions of water.
Preferably, the advance deep hole grouting reinforcement material for the tunnel in the weak stratum is prepared from the following raw materials in parts by weight: 420 parts of cement 350-containing material, 280 parts of building waste sand stone-containing material, 240 parts of fly ash 160-containing material, 55-70 parts of calcium chloride, 65-85 parts of water glass, 42-56 parts of hydroxymethyl cellulose and 580 parts of water 450-containing material.
More preferably, the advance deep hole grouting reinforcement material for the weak stratum tunnel is prepared from the following raw materials in parts by weight: 400 parts of cement, 260 parts of building waste gravel and sand, 210 parts of fly ash, 65 parts of calcium chloride, 72 parts of water glass, 53 parts of hydroxymethyl cellulose and 520 parts of water.
Preferably, the particle size of the building waste sand is 3-6 mm.
The second purpose of the invention is to provide a preparation method of the advanced deep hole grouting reinforcement material for the tunnel of the weak stratum, which comprises the following steps:
s1, respectively weighing the following raw materials in parts by weight: 500 portions of cement, 300 portions of waste building sand, 300 portions of 200 portions of waste building sand, 250 portions of fly ash, 50 to 80 portions of calcium chloride, 60 to 90 portions of water glass, 40 to 60 portions of hydroxymethyl cellulose and 600 portions of water;
and S2, mixing the raw materials weighed in the S1, and uniformly stirring to obtain the advance deep hole grouting reinforcement material for the tunnel in the weak stratum.
Preferably, the S2 specifically includes the following steps:
dissolving S1 hydroxymethyl cellulose in water to obtain a first mixture; dissolving S1 sodium silicate in water to obtain a second mixture; mixing S1 cement, building waste gravel and sand, fly ash and calcium chloride, and adding water to prepare a third mixture; and adding the first mixture into the third mixture, uniformly stirring, adding the second mixture, and uniformly mixing and stirring.
Preferably, the mass percent of water in the first mixture in S1 water is 5-8%, the mass percent of water in the second mixture in S1 water is 8-12%, and the mass percent of water in the third mixture in S1 water is 80-87%.
Preferably, the fly ash is prepared by sieving with a 60-mesh sieve.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, calcium chloride and water glass are added to generate gel, so that the gel property of a material system is improved, and hydroxymethyl cellulose is added to further improve the viscosity of the system, wherein the hydroxymethyl cellulose contains a large amount of hydroxyl groups, and can form an interactive network structure in a slurry system under the electrostatic interaction with calcium ions, so that the material can be rapidly coagulated after being injected, and the invasion of external moisture is prevented, thereby improving the anti-dispersion property of the whole slurry system; the cement is assisted by the building waste sand and stone and the fly ash, so that the use amount of the cement is reduced, waste materials are changed into things of value, and the cement is economical and environment-friendly.
Detailed Description
In order to make the technical solutions of the present invention better understood and enable those skilled in the art to practice the present invention, the following examples and data are provided for further illustration, but the examples are not intended to limit the present invention.
Example 1
The advanced deep hole grouting reinforcement material for the tunnel in the weak stratum is prepared from the following raw materials: 400kg of cement, 260kg of building waste gravel and sand, 210kg of fly ash, 65kg of calcium chloride, 72kg of water glass, 53kg of hydroxymethyl cellulose and 520kg of water.
The material is prepared by the following steps:
s1, respectively weighing the following raw materials in parts by weight: 400kg of cement, 260kg of building waste gravel and sand, 210kg of fly ash, 65kg of calcium chloride, 72kg of water glass, 53kg of hydroxymethyl cellulose and 520kg of water;
s2, dissolving S1 hydroxymethyl cellulose in water to obtain a first mixture (the mass percentage of water in the first mixture to S1 water is 6%); dissolving S1 water glass in water to obtain a second mixture (the mass percentage of water in the second mixture to S1 water is 10%); mixing S1 cement, building waste gravel and sand, fly ash and calcium chloride, and adding water to obtain a third mixture (the mass percentage of water in the third mixture in S1 water is 84%); and adding the first mixture into the third mixture, uniformly stirring, adding the second mixture, and uniformly mixing and stirring.
Example 2
The advanced deep hole grouting reinforcement material for the tunnel in the weak stratum is prepared from the following raw materials: 350kg of cement, 240kg of building waste gravel and sand, 160kg of fly ash, 55kg of calcium chloride, 65kg of water glass, 42kg of hydroxymethyl cellulose and 450kg of water.
The material is prepared by the following steps:
s1, respectively weighing the following raw materials in parts by weight: 350kg of cement, 240kg of building waste gravel and sand, 160kg of fly ash, 55kg of calcium chloride, 65kg of water glass, 42kg of hydroxymethyl cellulose and 450kg of water;
s2, dissolving S1 hydroxymethyl cellulose in water to obtain a first mixture (the mass percentage of water in the first mixture to S1 water is 7%); dissolving S1 water glass in water to obtain a second mixture (the mass percentage of water in the second mixture to S1 water is 12%); mixing S1 cement, building waste gravel and sand, fly ash and calcium chloride, and adding water to obtain a third mixture (the mass percentage of water in the third mixture in S1 water is 81%); and adding the first mixture into the third mixture, uniformly stirring, adding the second mixture, and uniformly mixing and stirring.
Example 3
The advanced deep hole grouting reinforcement material for the tunnel in the weak stratum is prepared from the following raw materials: 420kg of cement, 280kg of building waste gravel and sand, 240kg of fly ash, 70kg of calcium chloride, 85kg of water glass, 56kg of hydroxymethyl cellulose and 580kg of water.
The material is prepared by the following steps:
s1, respectively weighing the following raw materials in parts by weight: 420kg of cement, 280kg of building waste gravel and sand, 240kg of fly ash, 70kg of calcium chloride, 85kg of water glass, 56kg of hydroxymethyl cellulose and 580kg of water;
s2, dissolving S1 hydroxymethyl cellulose in water to obtain a first mixture (the mass percentage of water in the first mixture to S1 water is 8%); dissolving S1 water glass in water to obtain a second mixture (the mass percentage of water in the second mixture to S1 water is 12%); mixing S1 cement, building waste gravel and sand, fly ash and calcium chloride, and adding water to obtain a third mixture (the mass percentage of water in the third mixture in S1 water is 80%); and adding the first mixture into the third mixture, uniformly stirring, adding the second mixture, and uniformly mixing and stirring.
Example 4
The advanced deep hole grouting reinforcement material for the tunnel in the weak stratum is prepared from the following raw materials: 300kg of cement, 200kg of building waste gravel and sand, 150kg of fly ash, 50kg of calcium chloride, 60kg of water glass, 40kg of hydroxymethyl cellulose and 400kg of water.
The material is prepared by the following steps:
s1, respectively weighing the following raw materials in parts by weight: 300kg of cement, 200kg of building waste gravel and sand, 150kg of fly ash, 50kg of calcium chloride, 60kg of water glass, 40kg of hydroxymethyl cellulose and 400kg of water;
s2, dissolving S1 hydroxymethyl cellulose in water to obtain a first mixture (the mass percentage of water in the first mixture to S1 water is 6%); dissolving S1 water glass in water to obtain a second mixture (the mass percentage of water in the second mixture to S1 water is 10%); mixing S1 cement, building waste gravel and sand, fly ash and calcium chloride, and adding water to obtain a third mixture (the mass percentage of water in the third mixture in S1 water is 84%); and adding the first mixture into the third mixture, uniformly stirring, adding the second mixture, and uniformly mixing and stirring.
Example 5
The advanced deep hole grouting reinforcement material for the tunnel in the weak stratum is prepared from the following raw materials: 500kg of cement, 300kg of building waste gravel and sand, 250kg of fly ash, 80kg of calcium chloride, 90kg of water glass, 60kg of hydroxymethyl cellulose and 600kg of water.
The material is prepared by the following steps:
s1, respectively weighing the following raw materials in parts by weight: 500kg of cement, 300kg of building waste gravel and sand, 250kg of fly ash, 80kg of calcium chloride, 90kg of water glass, 60kg of hydroxymethyl cellulose and 600kg of water;
s2, dissolving S1 hydroxymethyl cellulose in water to obtain a first mixture (the mass percentage of water in the first mixture to S1 water is 6%); dissolving S1 water glass in water to obtain a second mixture (the mass percentage of water in the second mixture to S1 water is 10%); mixing S1 cement, building waste gravel and sand, fly ash and calcium chloride, and adding water to obtain a third mixture (the mass percentage of water in the third mixture in S1 water is 84%); and adding the first mixture into the third mixture, uniformly stirring, adding the second mixture, and uniformly mixing and stirring.
Comparative example 1
The advanced deep hole grouting reinforcement material for the tunnel in the weak stratum is prepared from the following raw materials: 400kg of cement, 260kg of building waste gravel and sand, 210kg of fly ash, 53kg of hydroxymethyl cellulose and 520kg of water.
The material is prepared by the following steps:
s1, respectively weighing the following raw materials in parts by weight: 400kg of cement, 260kg of building waste gravel and sand, 210kg of fly ash, 53kg of hydroxymethyl cellulose and 520kg of water;
s2, dissolving S1 hydroxymethyl cellulose in water to obtain a first mixture (the mass percentage of water in the first mixture to S1 water is 6%); mixing S1 cement, building waste gravel and fly ash, and adding water to obtain a second mixture (the mass percentage of water in the second mixture in S1 water is 94%); and adding the first mixture into the second mixture, and mixing and stirring uniformly.
Comparative example 2
The advanced deep hole grouting reinforcement material for the tunnel in the weak stratum is prepared from the following raw materials: 400kg of cement, 260kg of building waste gravel and sand, 210kg of fly ash, 65kg of calcium chloride, 72kg of water glass and 520kg of water.
The material is prepared by the following steps:
s1, respectively weighing the following raw materials in parts by weight: 400kg of cement, 260kg of building waste gravel and sand, 210kg of fly ash, 65kg of calcium chloride, 72kg of water glass and 520kg of water;
s2, dissolving S1 water glass in water to obtain a first mixture (the mass percentage of water in the first mixture to S1 water is 10%); mixing S1 cement, building waste gravel and sand, fly ash and calcium chloride, and adding water to obtain a second mixture (the mass percentage of water in the second mixture in S1 water is 90%); and adding the first mixture into the second mixture, and mixing and stirring uniformly.
Comparative example 3
The advanced deep hole grouting reinforcement material for the tunnel in the weak stratum is prepared from the following raw materials: 400kg of cement, 260kg of building waste gravel and sand, 53kg of hydroxymethyl cellulose and 520kg of water.
The material is prepared by the following steps:
s1, respectively weighing the following raw materials in parts by weight: 400kg of cement, 260kg of building waste gravel and sand, 210kg of fly ash and 520kg of water;
and S2, mixing the S1 raw materials, and uniformly stirring.
The materials obtained in examples 1 to 5 and comparative examples 1 to 3 were put in a forming mold, and then put in a concrete curing box for curing, and the results of performance test were as shown in Table 1:
TABLE 1 Performance data for materials prepared in examples 1-5 and comparative examples 1-3
From the results in table 1, compared with comparative examples 1-3, the material prepared by the invention has shorter setting time and higher compressive strength, taking example 1 and comparative example 1 as examples, the concrete in comparative example 1 does not contain calcium chloride and water glass, the setting time in comparative example 1 is 27min, and the setting time in example 1 is 15min, while for the compressive strength, as can be seen from table 1, example 1 is also higher than comparative example 1, which shows that calcium chloride and water glass can shorten the setting time of concrete and improve the mechanical strength; similarly, the hydroxymethyl cellulose can provide the performance of the concrete, and the synergistic effect of the calcium chloride, the water glass and the hydroxymethyl cellulose is better than that of the single addition (the calcium chloride and the water glass are added or the hydroxymethyl cellulose is added). The calcium chloride and the water glass are added to generate gel, the gelling performance of a material system is improved, the hydroxymethyl cellulose is added to further improve the viscosity of the system, the hydroxymethyl cellulose contains a large number of hydroxyl groups, the hydroxyl groups and calcium ions have electrostatic interaction, an interactive network structure can be formed in a slurry system, the material can be quickly condensed after being injected, the invasion of external moisture is prevented, and the anti-dispersion performance of the whole slurry system is improved. In addition, the waste building gravel and waste building fly ash are used for assisting the cement, so that the using amount of the cement is reduced, the waste is changed into valuable, and the cement is economic and environment-friendly.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, it is intended that such changes and modifications be included within the scope of the appended claims and their equivalents.
Claims (6)
1. The advanced deep hole grouting reinforcement material for the tunnel in the weak stratum is characterized by being prepared from the following raw materials in parts by weight: 500 portions of cement, 300 portions of waste building sand, 300 portions of 200 portions of waste building sand, 250 portions of fly ash, 50 to 80 portions of calcium chloride, 60 to 90 portions of water glass, 40 to 60 portions of hydroxymethyl cellulose and 600 portions of water;
the advanced deep hole grouting reinforcement material for the tunnel in the weak stratum is prepared by the following method:
s1, respectively weighing the following raw materials in parts by weight: 500 portions of cement, 300 portions of waste building sand, 300 portions of 200 portions of waste building sand, 250 portions of fly ash, 50 to 80 portions of calcium chloride, 60 to 90 portions of water glass, 40 to 60 portions of hydroxymethyl cellulose and 600 portions of water;
s2, dissolving S1 hydroxymethyl cellulose in water to prepare a first mixture; dissolving S1 sodium silicate in water to obtain a second mixture; mixing S1 cement, building waste gravel and sand, fly ash and calcium chloride, and adding water to prepare a third mixture; and adding the first mixture into the third mixture, uniformly stirring, then adding the second mixture, and uniformly mixing and stirring to obtain the advanced deep hole grouting reinforcement material for the tunnel in the weak stratum.
2. The advance deep hole grouting reinforcement material for the weak stratum tunnel according to claim 1 is characterized by being prepared from the following raw materials in parts by weight: 420 parts of cement 350-containing material, 280 parts of building waste sand stone-containing material, 240 parts of fly ash 160-containing material, 55-70 parts of calcium chloride, 65-85 parts of water glass, 42-56 parts of hydroxymethyl cellulose and 580 parts of water 450-containing material.
3. The advance deep hole grouting reinforcement material for the weak stratum tunnel according to claim 2 is characterized by being prepared from the following raw materials in parts by weight: 400 parts of cement, 260 parts of building waste gravel and sand, 210 parts of fly ash, 65 parts of calcium chloride, 72 parts of water glass, 53 parts of hydroxymethyl cellulose and 520 parts of water.
4. The advance deep hole grouting reinforcement material for the weak stratum tunnel according to claim 3, wherein the particle size of the building waste sand is 3-6 mm.
5. The reinforcement material for advance deep hole grouting of the weak formation tunnel according to claim 1, wherein the mass percent of water in the first mixture to S1 water is 5-8%, the mass percent of water in the second mixture to S1 water is 8-12%, and the mass percent of water in the third mixture to S1 water is 80-87%.
6. The advance deep hole grouting reinforcement material for the weak stratum tunnel according to claim 1, wherein the fly ash is prepared by sieving with a 60-mesh sieve.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215141A (en) * | 2008-01-02 | 2008-07-09 | 邓亚光 | Soft soil curing agent |
| KR101764645B1 (en) * | 2016-11-16 | 2017-08-14 | (주)지성이씨에스 | Grouting components with blast furnace slag and grouting chemical liquid agency using it |
| CN108569877A (en) * | 2018-06-05 | 2018-09-25 | 长安大学 | A kind of early-strength tunnel grouting material |
| CN109265100A (en) * | 2018-09-26 | 2019-01-25 | 北京市政建设集团有限责任公司 | A kind of super-hydrophobic injecting paste material and preparation method thereof |
-
2019
- 2019-11-29 CN CN201911202345.4A patent/CN110845213B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101215141A (en) * | 2008-01-02 | 2008-07-09 | 邓亚光 | Soft soil curing agent |
| KR101764645B1 (en) * | 2016-11-16 | 2017-08-14 | (주)지성이씨에스 | Grouting components with blast furnace slag and grouting chemical liquid agency using it |
| CN108569877A (en) * | 2018-06-05 | 2018-09-25 | 长安大学 | A kind of early-strength tunnel grouting material |
| CN109265100A (en) * | 2018-09-26 | 2019-01-25 | 北京市政建设集团有限责任公司 | A kind of super-hydrophobic injecting paste material and preparation method thereof |
Non-Patent Citations (1)
| Title |
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| "水泥—水玻璃双液注浆在黄土隧道施工中的应用";杨晓华;《中国公路学报》;20040630;第5页 * |
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