CN110437812A - A kind of shield warehouse entry slurries with pressure and preparation method thereof - Google Patents
A kind of shield warehouse entry slurries with pressure and preparation method thereof Download PDFInfo
- Publication number
- CN110437812A CN110437812A CN201910800422.XA CN201910800422A CN110437812A CN 110437812 A CN110437812 A CN 110437812A CN 201910800422 A CN201910800422 A CN 201910800422A CN 110437812 A CN110437812 A CN 110437812A
- Authority
- CN
- China
- Prior art keywords
- slurries
- shield
- warehouse entry
- pressure
- hydroxypropyl methyl
- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/514—Compositions based on water or polar solvents containing organic compounds macromolecular compounds of natural origin, e.g. polysaccharides, cellulose
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
Abstract
The invention discloses a kind of shield warehouse entry slurries with pressure and preparation method thereof, it is intended to which solution prepares one kind has good stability in briny environment, and lower filter loss can be used for the technical issues of forming the slurries of impermeable cement film when shield warehouse entry with pressure.Shield warehouse entry slurries with pressure are prepared from the following materials by weight percentage: sodium bentonite 9% ~ 16%, hydroxypropyl methyl cellulose HPMC0.25% ~ 0.58%, and defoaming agent 0.25% ~ 0.66%, surplus are water.Shield warehouse entry slurries with pressure of the present invention are with good stability, are able to suppress seawater to the eduction of slurries, in the case where seawater penetrates into slurries, slurries are still able to maintain stabilization.
Description
Technical field
The present invention relates to Shield Construction Technique fields, and in particular to a kind of shield warehouse entry slurries with pressure and its preparation side
Method.
Background technique
Shield in railway, highway, municipal works constructing tunnel field using more and more, it is especially various across Jiang Yuehai
Tunnel mostly uses greatly shield-tunneling construction, such as System of Wuhan Yangtse Tunnel, wide Shenzhen and Hong Kong lion ocean tunnel, Shanghai Changjiang River tunnel, yangtze river in nanjing tunnel
Road, Shantou channel Su Ai etc..
Warehouse entry with pressure is an important technology in shield-tunneling construction, is to carry out the inspection of shield cutter cutting tool state, cutter dimension
The premise repaired and replaced.Shield cutter can be made to keep good working order using warehouse entry technology tool changing with pressure, it is ensured that shield energy
Enough normal drivings.Stable warehouse entry pressure is the most critical link of warehouse entry with pressure, directly determines warehouse entry success or failure with pressure.Shield is with pressure
Warehouse entry slurries are that one layer of mud is formed on the soil body in shield tunneling region using the slurries for establishing stable warehouse entry pressure
Film avoids soil body gas leakage, is convenient for subsequent progress gas-liquid displacement (high pressure gas displacement slurries), builds warehouse entry working space with pressure.
But shield is influenced in more extra large constructing tunnel by seawater in stratum, shield warehouse entry pulp stability with pressure becomes
Difference, it may appear that segregation phenomenon, viscosity can sharply decline, and filter loss increases, and be unfavorable for pressure stable needed for building warehouse entry with pressure
Force environment increases shield warehouse entry task difficulty with pressure and risk.Therefore, it studies a kind of with pressure in marine environment suitable for shield
Slurries of warehouse entry and preparation method thereof will improve safety of the Shield Construction Technique in more extra large constructing tunnel, be conducive to shield
The progress of structure construction technology.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of shield warehouse entry slurries with pressure and preparation method thereof, can inhibit
Seawater improves stability of the slurries in briny environment to the eduction of slurries.
In order to solve the above technical problems, the present invention adopts the following technical scheme:
It designs a kind of shield warehouse entry slurries with pressure to be prepared from the following materials by weight percentage: sodium bentonite 9%
~ 16%, hydroxypropyl methyl cellulose HPMC0.25% ~ 0.58%, defoaming agent 0.25% ~ 0.66%, surplus are water.
Shield warehouse entry slurries with pressure of the present invention are with good stability in briny environment, and lower filter loss has
Conducive to the impermeable cement film for forming high quality in shield warehouse entry with pressure.
Preferably, by weight percentage, be prepared from the following materials: sodium bentonite 12.5%, hydroxypropyl methyl are fine
Element HPMC0.42% is tieed up, defoaming agent 0.45%, surplus are water.
Preferably, the sodium bentonite meets following quality index: viscosimeter 600r/min reading >=30, and filter loss≤
15cm3, 75 μm tail over mass fraction≤4.0%.
Preferably, the hydroxypropyl methyl cellulose HPMC meets following quality index:
In terms of sulfate, content of ashes≤5.0% mass fraction；
Moisture content≤5.0% mass fraction；
180 μm tail over mass fraction≤5%；
PH value of 1% aqueous solution under the conditions of 25 DEG C is 5.0 ~ 8.5；
Viscosity under the conditions of 20 DEG C is 160000 mPas ~ 240000mPas.
Preferably, the water is tap water, and pH value is 6.5 ~ 8.5.
The invention further relates to a kind of preparation methods of shield warehouse entry slurries with pressure, including the following steps:
(1) solid-phase raw materials are chosen according to above-mentioned ingredient and proportion: sodium bentonite, hydroxypropyl methyl cellulose HPMC and disappearing
Infusion；
(2) first required water is injected into stirring pool, reuses solid blender sodium bentonite and hydroxypropyl methyl is fine
Dimension element HPMC is uniformly mixed, and is then fed the mixture into stirring pool, is stirred evenly using blender；
(3) defoaming agent is added in step (2) resulting slurries, is stirred evenly；
(4) step (3) resulting slurries are delivered to extruding 24 hours in mud pit and are starched to get to shield warehouse entry with pressure
Liquid.
The beneficial effects of the present invention are:
Shield warehouse entry slurries with pressure of the present invention are with good stability, are able to suppress seawater to the eduction of slurries, In
In the case that seawater penetrates into slurries, slurries are still able to maintain stabilization.No matter shield-tunneling construction when locating fresh water environment or seawater ring
Border, slurries performance indexes can be fully met or requirement when warehouse entry with pressure better than shield, applied widely.
Detailed description of the invention
Fig. 1 is that relative viscosity, the filter loss of slurries change over time tendency chart.
Specific embodiment
Illustrate a specific embodiment of the invention below with reference to embodiment, but following embodiment is used only to be described in detail
The present invention does not limit the scope of the invention in any way.Related equipment component is as without especially in the examples below
Illustrate, is conventional equipment element；The related raw material of industry is commercially available regular industrial raw material unless otherwise instructed.
Embodiment 1: a kind of shield warehouse entry slurries with pressure are prepared from the following materials by weight percentage: sodium base
Bentonite 12.5%, hydroxypropyl methyl cellulose HPMC0.42%, defoaming agent 0.45%, water 86.13%.Sodium bentonite used meets
Following quality index: viscosimeter 600r/min reading >=30, filter loss≤15cm3,75 μm tail over mass fraction≤4.0%.It is used
Hydroxypropyl methyl cellulose HPMC meets following quality index: in terms of sulfate, content of ashes≤5.0% mass fraction；Moisture contains
Measure≤5.0% mass fraction；180 μm tail over mass fraction≤5%；PH value of 1% aqueous solution under the conditions of 25 DEG C is 5.0 ~ 8.5；20
Viscosity under the conditions of DEG C is 160000 mPas ~ 240000mPas.Water used is tap water, and pH value is 6.5 ~ 8.5.
Embodiment 2: a kind of shield warehouse entry slurries with pressure, difference from example 1 is that, with weight percent
Meter, is prepared from the following materials: by weight percentage, being prepared from the following materials: sodium bentonite 9%, hydroxypropyl first
Base cellulose HPMC0.25%, defoaming agent 0.25%, surplus are water.
Embodiment 3: a kind of shield warehouse entry slurries with pressure, difference from example 1 is that, with weight percent
Meter, is prepared from the following materials: sodium bentonite 16%, and hydroxypropyl methyl cellulose HPMC0.58% is defoaming agent 0.66%, remaining
Amount is water.
Embodiment 4: a kind of shield warehouse entry slurries with pressure, difference from example 1 is that, with weight percent
Meter, is prepared from the following materials: sodium bentonite 10%, hydroxypropyl methyl cellulose HPMC0.4%, defoaming agent 0.3%, surplus
For water.
Embodiment 5: a kind of shield warehouse entry slurries with pressure, difference from example 1 is that, with weight percent
Meter, is prepared from the following materials: sodium bentonite 14%, hydroxypropyl methyl cellulose HPMC0.5%, defoaming agent 0.55%, surplus
For water.
Embodiment 6: a kind of shield warehouse entry slurries with pressure, difference from example 1 is that, with weight percent
Meter, is prepared from the following materials: sodium bentonite 15%, hydroxypropyl methyl cellulose HPMC0.55%, defoaming agent 0.6%, surplus
For water.
The preparation method of shield warehouse entry slurries with pressure in above-described embodiment includes the following steps:
(1) according to the ingredient and proportion selection solid-phase raw materials in embodiment: sodium bentonite, hydroxypropyl methyl cellulose HPMC
And defoaming agent；
(2) first required water is injected into stirring pool, reuses solid blender sodium bentonite and hydroxypropyl methyl is fine
Dimension element HPMC is uniformly mixed, and is then fed the mixture into stirring pool, is stirred evenly using blender；
(3) defoaming agent is added in step (2) resulting slurries, is stirred evenly；
(4) step (3) resulting slurries are delivered to extruding 24 hours in mud pit and are starched to get to shield warehouse entry with pressure
Liquid.
Using the above method, the slurries under embodiment 1 matches are obtained, the relative viscosity for testing slurries, filter loss are at any time
Variation tendency is as shown in Figure 1.Shield band is pressed into cabin mud viscosity and generally requires in 90s or more, and filter loss is less than 10ml, from Fig. 1
In it can be seen that slurry viscosity of the invention can be stablized in 0 ~ 72h in 200s or more, filter loss 8.1ml, satisfaction uses need
It asks, it is with good performance.
The present invention is described in detail above in conjunction with embodiment, but person of ordinary skill in the field can manage
Solution, without departing from the purpose of the present invention, can also change each design parameter in above-described embodiment, be formed
Multiple specific embodiments are common variation range of the invention, are no longer described in detail one by one herein.
Claims (6)
1. a kind of shield warehouse entry slurries with pressure, which is characterized in that by weight percentage, be prepared from the following materials: sodium
Base bentonite 9% ~ 16%, hydroxypropyl methyl cellulose HPMC0.25% ~ 0.58%, defoaming agent 0.25% ~ 0.66%, surplus are water.
2. shield warehouse entry slurries with pressure according to claim 1, which is characterized in that by weight percentage, by following
Raw material is prepared: sodium bentonite 12.5%, hydroxypropyl methyl cellulose HPMC0.42%, and defoaming agent 0.45%, surplus are water.
3. shield warehouse entry slurries with pressure according to claim 1, which is characterized in that the sodium bentonite meets as follows
Quality index: viscosimeter 600r/min reading >=30, filter loss≤15cm3, 75 μm tail over mass fraction≤4.0%.
4. shield warehouse entry slurries with pressure according to claim 1, which is characterized in that the hydroxypropyl methyl cellulose
HPMC meets following quality index:
In terms of sulfate, content of ashes≤5.0% mass fraction；
Moisture content≤5.0% mass fraction；
180 μm tail over mass fraction≤5%；
PH value of 1% aqueous solution under the conditions of 25 DEG C is 5.0 ~ 8.5；
Viscosity under the conditions of 20 DEG C is 160000 mPas ~ 240000mPas.
5. shield warehouse entry slurries with pressure according to claim 1, which is characterized in that the water is tap water, and pH value is
6.5~8.5。
6. a kind of preparation method of shield warehouse entry slurries with pressure, characterized in that it comprises the following steps:
(1) according to the ingredient and proportion selection solid-phase raw materials described in claim 1: sodium bentonite, hydroxypropyl methyl are fine
Tie up element HPMC and defoaming agent；
(2) first required water is injected into stirring pool, reuses solid blender sodium bentonite and hydroxypropyl methyl is fine
Dimension element HPMC is uniformly mixed, and is then fed the mixture into stirring pool, is stirred evenly using blender；
(3) defoaming agent is added in step (2) resulting slurries, is stirred evenly；
(4) step (3) resulting slurries are delivered to extruding 24 hours in mud pit and are starched to get to shield warehouse entry with pressure
Liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910800422.XA CN110437812A (en) | 2019-08-28 | 2019-08-28 | A kind of shield warehouse entry slurries with pressure and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910800422.XA CN110437812A (en) | 2019-08-28 | 2019-08-28 | A kind of shield warehouse entry slurries with pressure and preparation method thereof |
Publications (1)
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| CN110437812A true CN110437812A (en) | 2019-11-12 |
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| CN201910800422.XA Pending CN110437812A (en) | 2019-08-28 | 2019-08-28 | A kind of shield warehouse entry slurries with pressure and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023155281A1 (en) * | 2022-02-15 | 2023-08-24 | 福建中天交通工程技术服务有限公司 | Preparation method for modified clay shock |
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| CN103074070A (en) * | 2013-01-28 | 2013-05-01 | 中国地质大学（北京） | Earth pressure balance shield slurry conditioner and preparation method thereof |
| CN106522965A (en) * | 2016-11-03 | 2017-03-22 | 上海隧道工程有限公司 | Slurry for stabilizing shield excavated surface in marine stratum and construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20191112 |
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