CN103113052A - High viscosity slurry for water-rich sandy gravel stratum slurry shield construction - Google Patents
High viscosity slurry for water-rich sandy gravel stratum slurry shield construction Download PDFInfo
- Publication number
- CN103113052A CN103113052A CN2013100180620A CN201310018062A CN103113052A CN 103113052 A CN103113052 A CN 103113052A CN 2013100180620 A CN2013100180620 A CN 2013100180620A CN 201310018062 A CN201310018062 A CN 201310018062A CN 103113052 A CN103113052 A CN 103113052A
- Authority
- CN
- China
- Prior art keywords
- slurry
- mud
- high viscosity
- type
- water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention relates to high viscosity slurry for water-rich sandy gravel stratum slurry shield construction. 12 parts of bentonite and a proper quantity of water are jointly added into a slurry preparing pool, the bentonite turns into even paste after 15 minutes of full agitation, then 1 part of I type slurrying agent is added into the slurry preparing pool and then stirred so as to form I type slurry, the specific gravity of the I type slurry is detected, the specific gravity of the I type slurry is required to be controlled between 1.05 and 1.15g/cm3, 20 parts of II type slurrying agent and 2 parts of III type slurrying agent are added into the slurry preparing pool and then stirred for 10 minutes so as to form high viscosity slurry, the marsh funnel viscosity of the high viscosity slurry is detected and is required to be controlled between 30-35s, and the marsh funnel viscosity of the high viscosity slurry is twice that of common bentonite slurry, so that the high viscosity slurry can be effectively mixed with excavated muck, the muck is prevented from depositing in a cutter cabin, and the shield is ensured to tunnel normally.
Description
Technical field
The invention belongs to the tunnel construction technology field, refer more particularly to a kind of high viscosity mud for rich water sand-pebble layer slurry shield construction.
Background technology
In the slurry shield engineering method, mud is slurry shield " blood ", and the effect of mud is as follows:
(1) shutoff underground water: mud is full of the space of being excavated, and immerses in foundation soil by pressure difference, stops up the passage of water;
(2) safeguard excavation face stability: mud is uniformly applied to excavation face by form the mud film of homogeneous in excavation face with pressure, and balance stratum wall pressure is kept excavation face stable, formation damage;
(3) transportation dregs: the dregs of shield tunneling will be suspended with the native slag of mud discharge tunnel suspension of dregs with after mud mixes by the recycle system.
The common bentonite slurry of the many employings of slurry shield construction in general low permeability formation, common bentonite slurry is formed by wilkinite, Xylo-Mucine CMC, clay configuration, and the mud balance general control is at 1.05～1.15g/cm
3The Marsh funnel viscosity of mud is 15～20s, and this mud has certain suitability in low permeability formation such as soft clay, silt, silty claies, because for this type of soil layer, self perviousness is just lower, need not the mud film and just can realize pressure equilibrium between shield cutter cabin and tunnel face.
But for rich water sand-pebble layer, above-mentioned common bentonite slurry is no longer applicable, and reason is as follows:
1) the common bentonite slurry that retains in the cutterhead cabin is difficult to form homogeneous mud film at tunnel face, thereby can't keep the stability of tunnel face, and tunnel face easily causes regionality to cave in, and causes serious engineering accident;
2) Marsh funnel viscosity of common bentonite slurry is lower, is difficult to effectively mix with the dregs that excavates, and dregs is deposited in the cutterhead cabin, affects the normal driving of shield structure.
Summary of the invention
For addressing the above problem, the invention provides a kind of high viscosity mud for rich water sand-pebble layer slurry shield construction, this high viscosity mud can form a kind of homogeneous mud film on the tunnel face that rich water sandy gravel consists of, effectively safeguard the stability of tunnel face.
For achieving the above object, the present invention adopts following technical scheme:
A kind of high viscosity mud for rich water sand-pebble layer slurry shield construction, this high viscosity mud includes I type pulping agent, II type pulping agent, III type pulping agent and wilkinite, the wilkinite of 12 weight parts and appropriate water are together added in the slurrying pond, fully stirring after 15 minutes makes wilkinite form even gelatinization shape, then add the I type pulping agent of 1 weight part and stir in the slurrying pond and form I type mud, proportion to described I type mud detects, and requires the specific gravity control of described I type mud at 1.05～1.15g/cm
3Add the II type pulping agent of 20 weight parts in the slurrying pond again and III type pulping agent and the uniform stirring of 2 weight parts formed high viscosity mud in 10 minutes, Marsh funnel viscosity to high viscosity mud detects, and requires the Marsh funnel viscosity of high viscosity mud to be controlled at 30～35s.
Owing to adopting technical scheme as mentioned above, the present invention produces following positively effect:
1, high viscosity mud of the present invention can form homogeneous mud film at tunnel face, can effectively keep the stability of tunnel face, for the normal construction of slurry shield provides assurance;
2, its Marsh funnel viscosity of high viscosity mud of the present invention can be controlled at 30～35s, viscosity 15～the 20s of relatively common bentonite slurry has improved nearly twice, therefore high viscosity mud of the present invention can effectively mix with the dregs that excavates, prevent that dregs is deposited in the cutterhead cabin, guarantees the normal driving of shield structure.
Description of drawings
Fig. 1 is the permeability test ultimate principle figure of high viscosity mud.
Fig. 2 is three kinds of film formed Quality Maps of mud.
Fig. 3 is that two kinds of mud form the design sketch of mud film under different pressures.
Fig. 4 is the surface subsidence monitoring graphic representation that different mud constructions cause.
In Fig. 1: the import of 1-high pressure gas, 2-mud entrance, 3-Glass Containers, 4-mud, the rich water sandy gravel of 5-, 6-porous filter plate, 7-venting hole, 8-water filtering tank, 9-water vent.
Embodiment
The present invention is a kind of high viscosity mud for rich water sand-pebble layer slurry shield construction, and this high viscosity mud can form a kind of homogeneous mud film on the tunnel face that rich water sandy gravel consists of, effectively safeguard the stability of tunnel face.
High viscosity mud includes I type pulping agent, II type pulping agent, III type pulping agent and wilkinite, and I type pulping agent, II type pulping agent and III type pulping agent are the pulping agent that the shield structure uses, and these pulping agents can be buied from market.
The present invention together adds the wilkinite of 12 weight parts and appropriate water in the slurrying pond, advise that described weight part minimum is take kilogram as value unit, for the tunnel often take ton as value unit, fully stirring after 15 minutes makes wilkinite form even gelatinization shape, described gelatinization shape is exactly the water consumption that adds, season, different its water consumptions were also not identical, can grasp flexibly water consumption according to construction requirement, and this is self-evident to this area.Then add the I type pulping agent of 1 weight part and stir forming I type mud in the slurrying pond, the proportion of described I type mud is detected, require the specific gravity control of described I type mud at 1.05～1.15g/cm
3Add the II type pulping agent of 20 weight parts in the slurrying pond again and III type pulping agent and the uniform stirring of 2 weight parts formed high viscosity mud in 10 minutes, Marsh funnel viscosity to high viscosity mud detects, and requires the Marsh funnel viscosity of high viscosity mud to be controlled at 30～35s.
High viscosity mud of the present invention is mainly used in the underground diameter line in Beijing, because this section circuit belongs to rich water sand-pebble layer.High viscosity mud of the present invention and common bentonite slurry have carried out respectively results of permeability tests, and to two kinds of mud form mud film speed, bearing capacity is tested.
Results of permeability tests
Get each two parts, common bentonite slurry, lower concentration mud and high viscosity mud, be placed on respectively in device shown in Figure 1 and test, sampling and test parameter such as following table:
Test-results such as following table under each 10kg of above-mentioned mud:
| The test specimen numbering | Water percolating capacity (kg) | The infiltration time (s) | Mud film thickness (mm) | Mud film characteristics |
| 1-1 | 8.4 | 97 | Nothing | Nothing |
[0030]?
| 2-1 | 4.8 | 144 | 3 | Discontinuous |
| 3-1 | 2.5 | 76 | 9 | Homogeneous |
| 1-2 | 8.6 | 82 | Nothing | - |
| 2-2 | 5.5 | 130 | 4 | Discontinuous |
| 3-2 | 3.1 | 54 | 7 | Homogeneous |
1-2 in above-mentioned test specimen, 2-2,3-2 all carry out under 0.1Mpa, three kinds of film formed Quality Maps of mud are seen Fig. 2, as can be seen from Figure 2: under the 0.1Mpa pressure condition, the whole seepage flow of common bentonite slurry run off and can't form the mud film, it is longer that low viscosity mud can form thinner thickness and inhomogeneous mud film and film formation time, and high viscosity mud can form homogeneous mud film within a short period of time.
2-2,3-2 in above-mentioned test specimen carries out the gas pressurization test simultaneously, namely enter high pressure gas by the import of test specimen high pressure gas, the results are shown in Figure 3, as can be seen from Figure 3: in progressively improving the gaseous tension process, the mud film that lower concentration mud forms is destroyed when 0.15Mpa, and the ability of mud film shutoff liquid infiltration disappears.The mud film that high viscosity mud forms is in pressure process, and when gaseous tension increased to 0.18Mpa, the sealing effectiveness of mud film was lost gradually.As seen the mud membranous ground that forms of high viscosity mud is more even, utilize good mud film with the mud hydraulic pressure stepless action at tunnel face, balance stratum Water And Earth Pressures, formation damage.
The surface subsidence monitoring figure that different mud constructions cause sees Fig. 4, the analysis showed that from Fig. 4: after high viscosity mud is applied to slurry shield construction rich water sand-pebble layer, can effectively reduce the sedimentation value on earth's surface, verify the suitability of high viscosity mud when the rich water sand-pebble layer of major diameter slurry shield construction.
Claims (1)
1. one kind is used for the high viscosity mud that rich water sand-pebble layer slurry shield is constructed, this high viscosity mud includes I type pulping agent, II type pulping agent, III type pulping agent and wilkinite, it is characterized in that: the wilkinite of 12 weight parts and appropriate water are together added in the slurrying pond, fully stirring after 15 minutes makes wilkinite form even gelatinization shape, then add the I type pulping agent of 1 weight part and stir in the slurrying pond and form I type mud, proportion to described I type mud detects, and requires the specific gravity control of described I type mud at 1.05～1.15g/cm
3Add the II type pulping agent of 20 weight parts in the slurrying pond again and III type pulping agent and the uniform stirring of 2 weight parts formed high viscosity mud in 10 minutes, Marsh funnel viscosity to high viscosity mud detects, and requires the Marsh funnel viscosity of high viscosity mud to be controlled at 30～35s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100180620A CN103113052A (en) | 2013-01-18 | 2013-01-18 | High viscosity slurry for water-rich sandy gravel stratum slurry shield construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100180620A CN103113052A (en) | 2013-01-18 | 2013-01-18 | High viscosity slurry for water-rich sandy gravel stratum slurry shield construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103113052A true CN103113052A (en) | 2013-05-22 |
Family
ID=48411464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100180620A Pending CN103113052A (en) | 2013-01-18 | 2013-01-18 | High viscosity slurry for water-rich sandy gravel stratum slurry shield construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103113052A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696779A (en) * | 2013-12-31 | 2014-04-02 | 中铁一局集团有限公司 | Tunnel face breast wall filter cake construction process for shield compressed air operations |
| CN106699105A (en) * | 2016-12-08 | 2017-05-24 | 中铁十四局集团隧道工程有限公司 | Mud for slurry shield gravel-cobble stratum tunneling and preparation method thereof |
| CN108763749A (en) * | 2018-05-28 | 2018-11-06 | 湖南科技大学 | A method of judging different degrees of water-rich and area face stability under the full water time |
| CN109519196A (en) * | 2018-11-30 | 2019-03-26 | 中铁隧道集团二处有限公司 | The slurries stable for shield face in compound stratum |
| CN112282774A (en) * | 2020-09-16 | 2021-01-29 | 中铁十九局集团轨道交通工程有限公司 | Shield notch slurry suitable for sandy water-rich stratum |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758635A (en) * | 2012-07-31 | 2012-10-31 | 中铁二局股份有限公司 | Construction method for tool changing under pressure in shield of water-rich silty soil and silty sand stratum under station tracks of railways |
-
2013
- 2013-01-18 CN CN2013100180620A patent/CN103113052A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102758635A (en) * | 2012-07-31 | 2012-10-31 | 中铁二局股份有限公司 | Construction method for tool changing under pressure in shield of water-rich silty soil and silty sand stratum under station tracks of railways |
Non-Patent Citations (1)
| Title |
|---|
| 郭信君等: "南京长江隧道工程难点分析及关键技术总结", 《岩石力学与工程学报》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103696779A (en) * | 2013-12-31 | 2014-04-02 | 中铁一局集团有限公司 | Tunnel face breast wall filter cake construction process for shield compressed air operations |
| CN106699105A (en) * | 2016-12-08 | 2017-05-24 | 中铁十四局集团隧道工程有限公司 | Mud for slurry shield gravel-cobble stratum tunneling and preparation method thereof |
| CN108763749A (en) * | 2018-05-28 | 2018-11-06 | 湖南科技大学 | A method of judging different degrees of water-rich and area face stability under the full water time |
| CN109519196A (en) * | 2018-11-30 | 2019-03-26 | 中铁隧道集团二处有限公司 | The slurries stable for shield face in compound stratum |
| CN112282774A (en) * | 2020-09-16 | 2021-01-29 | 中铁十九局集团轨道交通工程有限公司 | Shield notch slurry suitable for sandy water-rich stratum |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105736004B (en) | Shield is opened a position pressurize panelling construction method with weighing apparatus shield mud air pressure | |
| CN103113052A (en) | High viscosity slurry for water-rich sandy gravel stratum slurry shield construction | |
| CN103967498B (en) | A kind of method of opening the cabin with pressure of shield machine in coarse-grained soil stratum | |
| CN105842140B (en) | Fragmented rock body water sand seepage flow experiment system | |
| CN103775096B (en) | A kind of shield launching method of soft layer | |
| CN103821544A (en) | Tunnel and underground engineering high-pressure high-flow-rate sudden surging water control method | |
| CN101613595A (en) | Micro-foam drilling fluid | |
| Zhao et al. | Soil conditioning of waterless sand–pebble stratum in EPB tunnel construction | |
| CN103967499B (en) | A kind of shield machine belt pressure opens the cabin the supporting method of excavation face | |
| CN109749748A (en) | A kind of rich water round gravel stratum shield sediment improvement method and sediment improvement agent | |
| CN106673523A (en) | Protective mud applicable to pore forming by rotary drilling rig in geology of thick sand layer and preparation method of protective mud | |
| CN106866056B (en) | A kind of mud and preparation method thereof for construction of diaphragm wall | |
| CN205643100U (en) | Husky seepage flow experimental system of broken rock mass water | |
| CN100567454C (en) | A kind of macromolecular mud and configuration-system thereof | |
| CN109574620A (en) | The determination method of soft clay area diaphram wall slurry coat method and the simulated mud | |
| CN108150179A (en) | High osmosis bad ground shield pressure chamber sediment improvement method | |
| CN203463016U (en) | Three-axle agitator drill suitable for piercing gravel layer soil | |
| CN104962249A (en) | Load-bearing plugging agent for land drilling fluids and application method thereof | |
| CN106223329A (en) | A kind of construction method of full-sleeve rotary churning pile | |
| CN109519196A (en) | The slurries stable for shield face in compound stratum | |
| CN112010669A (en) | Underground cavity filling method and system | |
| CN104018843A (en) | Improved construction method of composite stratum shield tunneling soil body | |
| Holter et al. | Modern pre‐injection in underground construction with rapid‐setting microcements and colloidal silica–applications in conventional and TBM‐tunnelling | |
| CN104876489A (en) | Cement-bentonite slurry preparation and preparation method thereof | |
| CN114483063A (en) | Construction method for slurry shield river channel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130522 |