CN105399373A - Backfill material for shield method construction - Google Patents
Backfill material for shield method construction Download PDFInfo
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- CN105399373A CN105399373A CN201510847500.3A CN201510847500A CN105399373A CN 105399373 A CN105399373 A CN 105399373A CN 201510847500 A CN201510847500 A CN 201510847500A CN 105399373 A CN105399373 A CN 105399373A
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- cement
- tunneling machine
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Abstract
The invention discloses a backfill material for shield method construction. The backfill material is prepared from, by weight, 60-100 parts of cement, 1,200-1,300 parts of river sand, 140 parts of coal ash, 70-80 parts of mineral powder, 2-5 parts of a water reducing agent, 240 parts of water and 100-150 parts of bentonite. According to the backfill material, mortar prepared by stirring cement, river sand, coal ash, mineral powder, the water reducing agent and water is adopted for backfilling the shield construction part, and thus the earth pressure balance and stability can be ensured when a shield tunneling machine passes through so that the shield tunneling machine can stably and smoothly pass through the backfill part, and the safety coefficient generated when the shield tunneling machine passes through a middle air shaft can be greatly increased; meanwhile, by means of the backfill material, the abrasion degree of a cutter head of the shield tunneling machine can be greatly relieved, the service life of the cutter head can be prolonged, and the working function of the shield tunneling machine can be protected.
Description
Technical field
The present invention relates to a kind of backfilling material, particularly relate to a kind of backfilling material for shield construction.
Background technology
In shielded construction process, the attitude of shield engine controlled well is the Focal point and difficult point of construction.And for earth pressure balance shield machine, ensure the earth pressure balance on passive earth pressure and digging face, making digging face be in equilibrium state is the key keeping attitude of shield machine.
At present, in shielded construction process, when running into middle ventilating shaft, usually needing the side of shield engine from middle ventilating shaft to receive, then starting from opposite side, then start driving, waste time and energy, cost is high.Want to avoid above-mentioned situation, make shield engine under the state keeping driving continuously by middle ventilating shaft, just need before ventilating shaft, to use suitable backfilling material to backfill middle ventilating shaft, its digging face stress balance during to ensure that shield engine passes through in the middle of shield engine arrives.
Summary of the invention
The present invention provides a kind of backfilling material for shield construction for solving in known technology the technical problem that exists, adopt this backfilling material backfill in the middle of after ventilating shaft, can ensure that shield engine passes through smoothly.
The technical scheme that the present invention takes for the technical problem existed in solution known technology is: a kind of backfilling material for shield construction, be made up of cement, river sand, flyash, breeze, water reducer and water, the weight part ratio of each component is: cement: 60 ~ 100, river sand: 1200 ~ 1300, flyash: 140, breeze: 70 ~ 80, water reducer: 2 ~ 5, water: 240, wilkinite: 100 ~ 150.
Further, the weight part ratio of each component is: cement: 60 ~ 70, river sand: 1200 ~ 1300, flyash: 140, breeze: 70, water reducer: 3 ~ 4.5, water: 240, wilkinite: 100 ~ 120.
The advantage that the present invention has and positively effect are: employing cement, river sand, flyash, breeze, water reducer and water stir the mortar backfill shielded construction position of making, when can ensure that shield engine passes through, earth pressure balance is stablized, shield engine is stablized and passes through backfill position swimmingly, greatly increase the safety coefficient that shield engine passes through middle ventilating shaft; Meanwhile, use this backfilling material, can greatly reduce the cutter head of shield machine degree of wear, extend its work-ing life, the work functions of protection shield engine.
Embodiment
For summary of the invention of the present invention, Characteristic can be understood further, hereby exemplify following examples, be described in detail as follows:
Embodiment 1:
For a backfilling material for shield construction, be made up of cement, river sand, flyash, breeze, water reducer and water, the weight part ratio of each component is: cement: 100, river sand: 1300, flyash: 140, breeze: 80, water reducer: 5, water: 240, wilkinite: 150.During use, on-the-spot at backfill construction, utilize Site device to mix above-mentioned each component, mix rear obtaining and mix and stir mortar, its denseness 12.6cm, ultimate compression strength (28d) is 5.8Mpa.Mixing mortar is injected backfill position, such as: middle ventilating shaft.After mixing mortar backfills one day, its intensity reaches preset value, and in the present embodiment, the preset value of backfilling mortar intensity is 0.8 ~ 1.0Mpa, makes shield engine pass through middle ventilating shaft.Facts have proved: shield engine can pass through middle ventilating shaft smoothly.Passing through support pressure in the process of middle ventilating shaft at shield engine is 0.03MPa-0.05MPa; It is 45 side ~ 50 sides that every ring goes out the quantity of slag; Fltting speed is 2 ~ 2.5cm/min, and thrust is 850 ~ 950t, and cutter head torque and other correlation parameter are all in normal range.
Embodiment 2:
For a backfilling material for shield construction, be made up of cement, river sand, flyash, breeze, water reducer and water, the weight part ratio of each component is: cement: 60, river sand: 1200, flyash: 140, breeze: 70, water reducer: 3, water: 240, wilkinite: 100.During use, on-the-spot at backfill construction, utilize Site device to mix above-mentioned each component, mix rear obtaining and mix and stir mortar, its denseness 13.3cm, ultimate compression strength (28d) is 5.1Mpa.Mixing mortar is injected backfill position, such as: middle ventilating shaft.After mixing mortar backfills one day, its intensity reaches preset value, and in the present embodiment, the preset value of backfilling mortar intensity is 0.6 ~ 0.8Mpa, makes shield engine pass through middle ventilating shaft.Facts have proved: shield engine can pass through middle ventilating shaft smoothly.Passing through support pressure in the process of middle ventilating shaft at shield engine is 0.02MPa-0.03MPa; It is 45 side ~ 50 sides that every ring goes out the quantity of slag; Fltting speed is 2 ~ 2.5cm/min, and thrust is 850 ~ 950t, and cutter head torque and other correlation parameter are all in normal range.
Embodiment 3:
For a backfilling material for shield construction, be made up of cement, river sand, flyash, breeze, water reducer and water, the weight part ratio of each component is: cement: 60, river sand: 1200, flyash: 140, breeze: 70, water reducer: 2, water: 240, wilkinite: 100.During site operation, above-mentioned each component mixing is become mortar, its denseness 12.8cm, ultimate compression strength (28d) is 5.4Mpa.Mixing mortar is injected backfill position, such as: middle ventilating shaft.After mixing mortar backfills one day, its intensity reaches preset value, and in the present embodiment, the preset value of backfilling mortar intensity is 0.6 ~ 1.0Mpa, makes shield engine pass through middle ventilating shaft.Facts have proved: shield engine can pass through middle ventilating shaft smoothly.Passing through support pressure in the process of middle ventilating shaft at shield engine is 0.02MPa-0.04MPa; It is 45 side ~ 50 sides that every ring goes out the quantity of slag; Fltting speed is 2 ~ 2.5cm/min, and thrust is 850 ~ 950t, and cutter head torque and other correlation parameter are all in normal range.
Embodiment 4:
For a backfilling material for shield construction, be made up of cement, river sand, flyash, breeze, water reducer and water, the weight part ratio of each component is: cement: 70, river sand: 1300, flyash: 140, breeze: 70, water reducer: 4.5, water: 240, wilkinite: 120.During site operation, above-mentioned each component mixing is become mortar, its denseness 12.8cm, ultimate compression strength (28d) is 5.5Mpa.Mixing mortar is injected backfill position, such as: middle ventilating shaft.After mixing mortar backfills one day, its intensity reaches preset value, and in the present embodiment, the preset value of backfilling mortar intensity is 0.6 ~ 1.0Mpa, makes shield engine pass through middle ventilating shaft.Facts have proved: shield engine can pass through middle ventilating shaft smoothly.Passing through support pressure in the process of middle ventilating shaft at shield engine is 0.02MPa-0.04MPa; It is 45 side ~ 50 sides that every ring goes out the quantity of slag; Fltting speed is 2 ~ 2.5cm/min, and thrust is 850 ~ 950t, and cutter head torque and other correlation parameter are all in normal range.
In the present invention, cement is main binder, is powdery hydraulicity inorganic coagulation material.Add water after stirring and become slurry, can harden in atmosphere or better harden in water, and can the material such as sand, stone is cemented together securely, be the core material of backfilling material.
River sand is comparatively economical and practical fine aggregate, often uses in mortar and concrete.
Flyash and breeze are cement surrogates, are also the consolidating materials of slurry consolidation body, can reduce cost.
Water reducer is a kind of conventional concrete admixture, when maintaining concrete slump and being constant, can reduce mixing water amount.Water reducer belongs to anion surfactant mostly, containing sulfonated lignin and naphthalene sulphonate formaldehyde polymkeric substance.Water reducer has dissemination to cement granules after adding concrete mix, can improve its serviceability, reduces unit consumption of water, improves the mobility of concrete mix; Or minimizing unit cement consumption, save cement.
Wilkinite, as a kind of admixture, greatly can improve the denseness of slurries, and the stability of slurries is greatly improved.Wilkinite is as swollen material, and its swelling process, by absorbing a large amount of water, makes the free water in mortar reduce, causes the mobility of mortar to reduce, and liquidity value added is accelerated; Wilkinite is the silicate based on montmorillonite, there is columnar structure, thus after hydrolysis, card room structure can be formed in mortar, increase the stability of mortar, its distinctive slide effect, can improve the flowing property of mortar to a certain extent simultaneously, increase pumpability, prevent plugging to a certain extent.
Although be described in conjunction with the preferred embodiments of the present invention above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, can also make a lot of form, these all belong within protection scope of the present invention.
Claims (2)
1. for a backfilling material for shield construction, it is characterized in that, be made up of cement, river sand, flyash, breeze, water reducer and water, the weight part ratio of each component is:
Cement: 60 ~ 100
River sand: 1200 ~ 1300
Flyash: 140
Breeze: 70 ~ 80
Water reducer: 2 ~ 5
Water: 240
Wilkinite: 100 ~ 150.
2. the backfilling material for shield construction according to claim 1, is characterized in that, the weight part ratio of each component is:
Cement: 60 ~ 70
River sand: 1200 ~ 1300
Flyash: 140
Breeze: 70
Water reducer: 3 ~ 4.5
Water: 240
Wilkinite: 100 ~ 120.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510847500.3A CN105399373A (en) | 2015-11-26 | 2015-11-26 | Backfill material for shield method construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510847500.3A CN105399373A (en) | 2015-11-26 | 2015-11-26 | Backfill material for shield method construction |
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| Publication Number | Publication Date |
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| CN105399373A true CN105399373A (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510847500.3A Pending CN105399373A (en) | 2015-11-26 | 2015-11-26 | Backfill material for shield method construction |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108706921A (en) * | 2018-06-05 | 2018-10-26 | 中铁十四局集团大盾构工程有限公司 | A kind of plastic concrete and preparation method thereof reinforced for shield end |
| CN109133839A (en) * | 2018-09-26 | 2019-01-04 | 北京市政建设集团有限责任公司 | A kind of method of shield dregs recycling and reusing |
| CN110835258A (en) * | 2019-10-31 | 2020-02-25 | 中铁二局集团有限公司 | Shield receiving steel sleeve backfill material and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101269938A (en) * | 2008-04-29 | 2008-09-24 | 武汉理工大学 | Tunnel backing cloth slip casting material capable of preventing duct piece float upward and preparation method thereof |
| CN102425427A (en) * | 2011-12-30 | 2012-04-25 | 中铁二局股份有限公司 | Method for constructing tunnel by utilizing shield empty-pushing crossing mine method |
| CN103277108A (en) * | 2013-04-19 | 2013-09-04 | 中铁隧道集团有限公司 | Slurry shield tunneling machine underwater arrival construction method |
| CN104653191A (en) * | 2014-12-31 | 2015-05-27 | 广东华隧建设股份有限公司 | Method of earth pressure shield machine tunnelling in high efficiency in water-rich round gravel stratum |
| CN105000830A (en) * | 2015-04-22 | 2015-10-28 | 南京航空航天大学 | Double-expansion filling mortar |
-
2015
- 2015-11-26 CN CN201510847500.3A patent/CN105399373A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101269938A (en) * | 2008-04-29 | 2008-09-24 | 武汉理工大学 | Tunnel backing cloth slip casting material capable of preventing duct piece float upward and preparation method thereof |
| CN102425427A (en) * | 2011-12-30 | 2012-04-25 | 中铁二局股份有限公司 | Method for constructing tunnel by utilizing shield empty-pushing crossing mine method |
| CN103277108A (en) * | 2013-04-19 | 2013-09-04 | 中铁隧道集团有限公司 | Slurry shield tunneling machine underwater arrival construction method |
| CN104653191A (en) * | 2014-12-31 | 2015-05-27 | 广东华隧建设股份有限公司 | Method of earth pressure shield machine tunnelling in high efficiency in water-rich round gravel stratum |
| CN105000830A (en) * | 2015-04-22 | 2015-10-28 | 南京航空航天大学 | Double-expansion filling mortar |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108706921A (en) * | 2018-06-05 | 2018-10-26 | 中铁十四局集团大盾构工程有限公司 | A kind of plastic concrete and preparation method thereof reinforced for shield end |
| CN109133839A (en) * | 2018-09-26 | 2019-01-04 | 北京市政建设集团有限责任公司 | A kind of method of shield dregs recycling and reusing |
| CN110835258A (en) * | 2019-10-31 | 2020-02-25 | 中铁二局集团有限公司 | Shield receiving steel sleeve backfill material and preparation method thereof |
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Application publication date: 20160316 |
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