CN103174129B - Mud flat soft soil foundation rapid consolidation processing method - Google Patents
Mud flat soft soil foundation rapid consolidation processing method Download PDFInfo
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- CN103174129B CN103174129B CN201110437523.9A CN201110437523A CN103174129B CN 103174129 B CN103174129 B CN 103174129B CN 201110437523 A CN201110437523 A CN 201110437523A CN 103174129 B CN103174129 B CN 103174129B
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
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Abstract
In order to overcome the deficiency of existing reinforced soft soil ground treatment technology, the difficult problem such as long for the Soft Soil Consolidation time, sensitivity is large, the present invention provides a kind of processing method of mud flat soft soil foundation rapid consolidation in conjunction with Chinese invention patent quick sea coating mud consolidation agent (201010268432.2) and Chinese invention patent quick sea coating mud consolidation equipment (201020546026.3).Technical scheme of the present invention is: utilize quick sea coating mud consolidation agent material direct by curing compound admixture to deep super soft ground on soft foundation by peculiar construction equipment, make curing materials and soft base fully stir combination, realize the solidification process of soft base.The beneficial effect that the present invention has is: the invention solves the dependence of concretion of soft foundation process to sand material, after process, the bearing capacity of soft base is large, and reduces the concretion of soft foundation time, achieves the direct solidification process in soft foundation original place, construction is simple, operating efficiency is high, treating depth is large, and cost is low.
Description
Technical field
The present invention relates to a kind of consolidation process being applicable to moisture content is higher, transmission coefficient is little mud and muddy foundation.Be specially adapted to the consolidation process of the soft foundation that soft base is deep, highly sensitive, low bearing capacity, common mechanical equipment should not be constructed.
Background technology
Current beach soft-soil foundation treatment method extensively adopts the methods such as sand (rubble) bed course adds plastic draining board preloading, plastic draining board adds vacuumizing method, sand compaction pile, toe-shooting method; But these processing methods still exist certain weak point, adopt sand (rubble) bed course, excavation mineral resources are serious, and destroy ecological environment; Which kind of loading method no matter plastic draining board processing method adopt, and consolidation time is still very long, and bearing capacity of foundation soil is not high yet, and sensitivity is also larger; Sand compaction pile and compacting mud by explosion belong to exchange method for processing foundation, and mineral resources consumption is larger and basement process cost is also large.Along with socioeconomic development, cubic metre of earth and stone exploitation is restricted, and engine request is more and more higher; Obviously, this several processing method cannot meet the restricted region of mining of earth and stone and consolidation time and requires the engineering short, bearing capacity requirement is higher.
Summary of the invention
In order to overcome the deficiency of existing reinforced soft soil ground treatment technology, the difficult problem such as long for the Soft Soil Consolidation time, sensitivity is large, the present invention provides a kind of processing method of mud flat soft soil foundation rapid consolidation in conjunction with Chinese invention patent quick sea coating mud consolidation agent (201010268432.2) and Chinese invention patent quick sea coating mud consolidation equipment (201020546026.3).
Technical scheme of the present invention is: utilize quick sea coating mud consolidation agent material direct by curing compound admixture to deep super soft ground on soft foundation by peculiar construction equipment, make curing materials and soft base fully stir combination, realize the solidification process of soft base.
Method And Principle: consolidating agent is configured pulping agent, the high-pressure rotary-spray agitator of quick sea coating mud consolidation equipment is delivered to by high-pressure delivery pump, curing compound is stirred in soft base from bottom to top and stirs by agitator in soft base, is realized the sequential production of soft base solidification by the displacement of tidal land mud consolidation device.
Mud flat soft soil foundation rapid consolidation processing method, its step is as follows:
1, soft base quality detection: mainly detect the moisture content of soft base, organic content and relevant physicochemical index;
2, determine that each composition proportion of consolidating agent carries out the configuration of corresponding consolidating agent according to Testing index in conjunction with quick sea coating mud consolidation agent (201010268432.2), consolidating agent adding proportion is determined: detect data and loading capacity of engineering index request according to soft base mud sample, determine consolidating agent mix ratio, be calculated as follows:
N---consolidating agent mix ratio;
ω---soft base moisture content;
---shale coefficient (generally get 0.8 ~ 1.2, the soft base of sand mold gets the small value, and cement takes large values);
---bearing capacity factor;
---loading capacity of engineering index, unit: KPa;
Again according to the execution conditions of engineering fed distance, determine the water/binder ratio (the water/binder ratio general control 0.5 ~ 2 of curing compound slurries, is directly proportional to fed distance) of curing compound.
The control of construction quality: according to consolidating agent mix ratio and each running parameter of water/binder ratio determination equipment, the feed flow of the rising or falling speed of agitator, the speed of travel of equipment, curing compound slurries, to ensure that soft base curing compound stirs adding proportion and stirs.The speed of travel of equipment, the feed flow of consolidating agent slurries control to be calculated as follows:
；
Q---slurries feed flow, unit: m
3/ min;
The v---equipment speed of travel, unit: m/min;
H---is soft, and base needs treating depth, unit: m;
N---consolidating agent mix ratio;
N
1---consolidating agent water/binder ratio;
V
1---the rising or falling speed (determine according to shale, generally get 2m/min, shale reduces value more firmly) of agitator;
Radius (equipment is generally 0.4) unit: the m of r---agitator;
---equipment stirring-head number;
3, set each running parameter of equipment, in place according to the construction progress direction equipment determined, unlatching consolidating agent induction system and equipment are constructed, and in construction works, the feed flow of consolidating agent is controlled by electronic flow controller.
4, effect detection: carry out silt soil mechanical index tracing detection to the consolidation construction soft base of latter 7 days, to verify the mixing effect of curing compound and to adjust, ensures concretion of soft foundation construction engineering demands.
The beneficial effect that the present invention has is: the invention solves the dependence of concretion of soft foundation process to sand material, after process, the bearing capacity of soft base is large, and reduces the concretion of soft foundation time, achieves the direct solidification process in soft foundation original place, construction is simple, operating efficiency is high, treating depth is large, and cost is low.
Detailed description of the invention
Ninghai Xia Yang is coated with engineering foundation consolidation test: painting face, seabeach elevation-1m, test area 200m
2, treating depth is 1m, and bearing capacity reaches 300KPa, 2, construction equipment agitator, and stirring rising or falling speed is 2m/min.
1, detect beach thin-skinned base shale characteristic, moisture content average 80%, soft base belongs to clay, according to quick sea coating mud consolidation agent (201010268432.2), determines the consolidating agent formula by this engineering.
2, require to determine consolidating agent adding proportion according to soft base mud sample detection data and engineering objective, the soft base due to this engineering is clay, and the moisture content ω of soft base is 80%, and bearing capacity index requires 300KPa.Consolidating agent mix ratio can be obtained according to design formulas:
1 is got for the ease of carrying the water/binder ratio of curing compound.
3, Specific construction: because this engineering shale is clay, adopts silt consolidation plant equipment directly to carry out agitator; The project treatment degree of depth is 1m; According to the consolidating agent mix ratio 12% calculated and each running parameter of water/binder ratio 1 computing equipment, the speed of travel of equipment and the feed flow of curing compound slurries are calculated as follows.
The each running parameter of the equipment that sets, opens curing compound induction system and equipment is constructed, and is carried out the control of slurries blending ratio in work progress by electronic flow controller.
Effect detection: carry out mud mechanical index tracing detection to the consolidation construction soft base of latter 7 days, bearing capacity reaches more than 300KPa, and washing away and immersion through tide every day, meet test requirements document standard.
Claims (1)
1. a mud flat soft soil foundation rapid consolidation processing method, is characterized in that step is as follows: (1), soft base quality detection: mainly detect the moisture content of soft base, organic content and relevant physicochemical index;
(2), carry out the configuration of corresponding consolidating agent in conjunction with each composition proportion of quick sea coating mud consolidation agent determination consolidating agent according to Testing index, consolidating agent adding proportion is determined: detect data and loading capacity of engineering index request according to soft base mud sample, determine consolidating agent mix ratio, be calculated as follows:
n＝κ
1κ
2ω×0.05
κ
2＝f
a/100KPa
N---consolidating agent mix ratio;
ω---soft base moisture content;
κ
1---shale coefficient shale coefficient is 0.8 ~ 1.2, and the soft base of sand mold gets the small value, and cement takes large values;
κ
2---bearing capacity factor;
F
a---loading capacity of engineering index, unit: KPa; Again according to the execution conditions of engineering fed distance, determine the water/binder ratio of curing compound, the water/binder ratio of curing compound slurries is 0.5 ~ 2;
The control of construction quality: according to consolidating agent mix ratio and each running parameter of water/binder ratio determination equipment, to ensure that soft base curing compound stirs adding proportion and stirs;
The speed of travel of equipment, the feed flow of consolidating agent slurries control to be calculated as follows:
v＝2rv
1/h
Q＝κ
3n(n
1+1)πr
2h
2/v
1；
Q---slurries feed flow, unit: m
3/ min;
The v---equipment speed of travel, unit: m/min;
H---is soft, and base needs treating depth, unit: m;
N---consolidating agent mix ratio;
N
1---consolidating agent water/binder ratio;
V
1---the rising or falling speed of agitator;
The radial unit of r---agitator: m;
κ
3---equipment stirring-head number;
(3), each running parameter of the equipment that sets, in place according to the construction progress direction equipment determined, open consolidating agent induction system and equipment and construct, in construction works, the feed flow of consolidating agent is controlled by electronic flow controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110437523.9A CN103174129B (en) | 2011-12-23 | 2011-12-23 | Mud flat soft soil foundation rapid consolidation processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110437523.9A CN103174129B (en) | 2011-12-23 | 2011-12-23 | Mud flat soft soil foundation rapid consolidation processing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103174129A CN103174129A (en) | 2013-06-26 |
| CN103174129B true CN103174129B (en) | 2015-07-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110437523.9A Active CN103174129B (en) | 2011-12-23 | 2011-12-23 | Mud flat soft soil foundation rapid consolidation processing method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105672388A (en) * | 2014-10-12 | 2016-06-15 | 童玉兰 | Dredged sediment adding mixing machine for building engineering filling and construction method of machine |
| CN109763480B (en) * | 2019-03-04 | 2020-07-31 | 中国科学院武汉岩土力学研究所 | High-efficiency curing method for soft soil field with high water content |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002220827A (en) * | 2001-01-26 | 2002-08-09 | Junko Nakamura | Solidification processing method with coconut shell fiber for soft ground |
| CN1760466A (en) * | 2005-11-02 | 2006-04-19 | 天津城市建设学院 | Groundwork firming agent for soft soil of marine accumulation, and preparation method |
| WO2010059016A3 (en) * | 2008-11-24 | 2010-09-23 | 에이치엔티환경건설개발주식회사 | Construction method for improving soft ground |
| CN102021906A (en) * | 2010-12-16 | 2011-04-20 | 河南省新开元路桥工程咨询有限公司 | Method for reinforcing soft soil foundation at deep mixing pile |
-
2011
- 2011-12-23 CN CN201110437523.9A patent/CN103174129B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002220827A (en) * | 2001-01-26 | 2002-08-09 | Junko Nakamura | Solidification processing method with coconut shell fiber for soft ground |
| CN1760466A (en) * | 2005-11-02 | 2006-04-19 | 天津城市建设学院 | Groundwork firming agent for soft soil of marine accumulation, and preparation method |
| WO2010059016A3 (en) * | 2008-11-24 | 2010-09-23 | 에이치엔티환경건설개발주식회사 | Construction method for improving soft ground |
| CN102021906A (en) * | 2010-12-16 | 2011-04-20 | 河南省新开元路桥工程咨询有限公司 | Method for reinforcing soft soil foundation at deep mixing pile |
Non-Patent Citations (1)
| Title |
|---|
| 海淤泥快速固结技术研究与应用;陈富强等;《中国水利》;20110430(第08期);第42-44页 * |
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| CN103174129A (en) | 2013-06-26 |
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