CN100346036C - Method of solidifying blow filling soft soil using saponificated slag soil and saponificated slag - Google Patents
Method of solidifying blow filling soft soil using saponificated slag soil and saponificated slag Download PDFInfo
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- CN100346036C CN100346036C CNB2005100144808A CN200510014480A CN100346036C CN 100346036 C CN100346036 C CN 100346036C CN B2005100144808 A CNB2005100144808 A CN B2005100144808A CN 200510014480 A CN200510014480 A CN 200510014480A CN 100346036 C CN100346036 C CN 100346036C
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- slag
- saponification slag
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Abstract
The present invention discloses saponification slag soil which is composed of saponification slag and hydraulic fill soft soil, and the percentage of the dry weight of the saponification slag and the hydraulic fill soft soil is 1/3 to 1/5. The present invention also provides a method for strengthening hydraulic fill soft soil by saponification slag. In the method, strengthening regions are sectionally formed hydraulic fill pools, and part of moisture in the hydraulic fill soft soil all the hydraulic fill pools is removed, so that the hydraulic fill soft soil has the preset bearing capacity; the saponification slag is evenly distributed on the surface of the hydraulic fill soft soil in each hydraulic fill pool in proportion; the saponification slag and the hydraulic fill soft soil are thoroughly and evenly mixed and dried; the mixed and dried saponification slag and hydraulic fill soft soil are mixed and stacked together to be sunbaked for five to twenty days, and the saponification slag soil is paved flat and pressed tight. Because the method of the present invention has the advantages of cheap raw materials and simple manufacturing process, the construction cost on the treatment of sea soft soil ground bases can be effectively lowered, and the economic benefit is visible; on the other hand, the construction period can be effectively shortened, which brings great economic benefit.
Description
Technical field
The present invention relates to a kind of saponification dregs, the invention still further relates to a kind of reinforcing saturated dredger soft soil method.
Background technology
The saponification slag system is produced a kind of industrial residue that discharges in the expoxy propane process, comes down to Ca (OH)
2The Calcium Carbide Ash that content is lower for many years, does not obtain development and use always, can only store up.It not only causes severe contamination to environment, and becomes the key factor that the restriction chemical plant enlarges the production of propylene oxide scale.Therefore, carry out special project research, make it to become a kind of material resources, will produce the development generation positive impact of the similar enterprise of expoxy propane to the whole nation, and produce great environmental benefit with regard to the development and use of saponification slag.
Along with the needs of China's development of economic construction and opening, Scale Sea Reclamation Project plays an important role in production and construction, and becomes important component part in the coastal engineering construction.In a lot of places,, have to adopt the seabed weak soil (cohesive soil) of coastal waters recent deposit as the hydraulic reclamation material because native source is in short supply and the needs of construction Shenzhen and Hong Kong mouth.And that this weak soil needs after hydraulic reclamation through the deposition naturally more than a year is fixed, treats that the surface forms duricrust, can consolidation process.
And development in recent years is rapid aspect the Soft Ground engineering, engineering circle and academia reinforce hydraulic fill foundation and have carried out effective research as aspects such as piling prepressing, powder spray piling, compaction pile, deep-mixed pile, vacuum preloadings, but owing to limited by engineering specifications, this epeirogenetic mode expending on time and financial resources is all very big.If can find a kind of more reasonable, more economical reinforcing technique, as early as possible barged-in fill is reinforced, make barged-in fill change the ground with certain bearing capacity into from the mud state as soon as possible, will effectively shorten the construction period, engineering construction brings huge benefits to reclaiming land around sea.
The industrial occupancy, Harbor is being planned to build in Tianjin, uses saponification slag to reinforce blowing filling soft soil foundation, when finding a way out for saponification slag on the one hand, alleviated the problem of native source anxiety, reduce construction costs widely, can also effectively shorten the construction period on the other hand, bring huge economic benefit.With regard to utilizing with regard to saponification slag reclaims fields from the sea, yet there are no corresponding research report.
Summary of the invention
The object of the present invention is to provide a kind ofly turns waste into wealth, and has both solved the problem of outlet of chemical plant saponification slag, and its application can not influence Environmental security yet, has the saponification dregs of huge environmental benefit.
Another object of the present invention is to overcome the shortcoming of prior art, provide a kind of saponification slag to reinforce the method for saturated dredger soft soil, this method finds a way out for saponification slag on the one hand, alleviated the problem of native source anxiety simultaneously, reduce construction costs widely, can also effectively shorten the construction period on the other hand, increase work efficiency, and meet the requirement of building operations bearing capacity of foundation soil.
The invention provides a kind of saponification dregs, it is made up of saponification slag and saturated dredger soft soil, and the dry weight percentage of described saponification slag and saturated dredger soft soil is 1: 3-1: 5.
The present invention also provides a kind of saponification slag to reinforce the method for saturated dredger soft soil, and this method may further comprise the steps:
(1) the reinforcing area subregion is formed the hydraulic reclamation pond, remove the part moisture content in each hydraulic reclamation pond saturated dredger soft soil, make saturated dredger soft soil possess predetermined bearing capacity;
(2) saponification slag is distributed in proportion the saturated dredger soft soil surface in each hydraulic reclamation pond;
(3) described saponification slag and saturated dredger soft soil are fully mixed airing;
(4) will mix, the saponification slag after the airing and saturated dredger soft soil mix work heap and shone dry 5-20 days, the water content of the saponification dregs of the formation 20%-40% that is weight percentage;
(5) with the compacting of described saponification dregs paving and leveling, its dry density is 1.30-1.45g/cm
3
Saponification slag in the saponification dregs of the present invention is an industrial residue, adopts it to reinforce barged-in fill, becomes useless in protecting, and greatly reduces construction costs; And adopt the saponification dregs to use, can not pollute environment as ground.
Saponification slag of the present invention is reinforced the method for saturated dredger soft soil, because raw material are cheap, and technology is simple, thereby can effectively reduce the construction costs of ocean Soft Ground, remarkable in economical benefits; Can also effectively shorten the construction period on the other hand, bring huge economic benefit.
The specific embodiment
The invention will be further described below in conjunction with the specific embodiment and embodiment.
A kind of saponification dregs of the present invention, it is made up of saponification slag and saturated dredger soft soil, and the dry weight percentage of described saponification slag and saturated dredger soft soil is 1: 3-1: 5, preferred percentage by weight is 1: 4-1: 5; Described saturated dredger soft soil can be ooze, river silt etc.This saponification dregs can adopt following method preparation: the saturated dredger soft soil subregion is formed the hydraulic reclamation pond, remove the part moisture content in each hydraulic reclamation pond saturated dredger soft soil, make saturated dredger soft soil possess predetermined bearing capacity; Then saponification slag is distributed in proportion the saturated dredger soft soil surface in each hydraulic reclamation pond; Described saponification slag and saturated dredger soft soil are fully mixed, and airing can make the saponification dregs.
Saponification slag of the present invention is reinforced the method for saturated dredger soft soil, and the saturated dredger soft soil in the hydraulic reclamation pond in the step 1 can in time be discharged ponding in the pond through depositing fixed and water evaporates naturally, makes the hydraulic reclamation pond possess preliminary bearing capacity, makes calfdozer can carry out the cloth ash manipulation.The inventive method step 2 can adopt tipping lorry and bulldozer cloth saponification slag in the hydraulic reclamation pond, push away the saponification slag muck flat with bulldozer, make it be distributed in saturated dredger soft soil surface in the hydraulic reclamation pond with certain thickness, the percentage by weight of described saponification slag and saturated dredger soft soil is 1: 3-1: 5, and preferred percentage by weight is 1: 4-1: 5.The inventive method step 3 can excavator be a mixing machinery, ted construction section at each, on the previous step operation paves the saponification slag basis, every excavator of excavator operation disposes three block plate stakes, and (concrete size press the excavator model calmly, generally can be 600mm * 5000mm) to prevent that excavator is absorbed in the mud wetland.Saponification slag and saturated dredger soft soil (according to requirement of engineering, handling the degree of depth usually to original beach mud face) are fully mixed, and airing makes the saponification dregs.Step 4 of the present invention is being mixed and stirred on the operation basis of tedding, and can adopt excavator to shine drying by having mixed and stirred heap in the middle of two side direction, after rising, forms the ditch between each ridge naturally, and water is assembled to the ditch under action of gravity in the ridge, should adopt foul water pump in time water to be drained.It is relevant with weather conditions drying time to work the back, and at 5-10 days, bad climate conditions such as chance sleet then were 10-20 days under the suitable situation of general weather.The construction of saponification dregs the time should suitably be controlled water content,, should dry or to spread water moistening the water content of the saponification dregs 20%-40% that is weight percentage in this step, the preferred water content 25%-35% that is weight percentage as the excess moisture of saponification dregs or when not enough.Step 5 of the present invention is on previous step operation basis, and the degree of drying of looking after tedding (should consider climatic effect) adopts excavator, bulldozer rolling paving and leveling.When rolling, wheel (rammer) mark should overlap mutually, and anti-leak-stopping is pressed.Saponification dregs dry density after the compacting is 1.30-1.45g/cm
3, preferred dry density is 1.35-1.45g/cm
3
Embodiment 1
The reinforcing area subregion is formed hydraulic reclamation pond natural evaporation fall part moisture content in each hydraulic reclamation pond hydraulic fill sea mud, make hydraulic fill sea mud possess predetermined bearing capacity; Saponification slag and hydraulic fill sea mud are distributed in the hydraulic fill sea mud surface in each hydraulic reclamation pond by 1: 4 dry weight percentage; Described saponification slag and hydraulic fill sea mud are fully mixed airing; Saponification slag after mixing, the airing and hydraulic fill sea mud mix are worked dry 5 days of heap solarization, and the water content of the saponification dregs of formation is weight percentage 40%; With the compacting of described saponification dregs paving and leveling, its dry density is 1.30g/cm
3, reinforcing the groundwork bearing capacity is 65kPa.
Embodiment 2
The reinforcing area subregion is formed the hydraulic reclamation pond, and the part moisture content in each hydraulic reclamation pond hydraulic fill sea mud is fallen in natural evaporation, makes hydraulic fill sea mud possess predetermined bearing capacity; Saponification slag and hydraulic fill sea mud are distributed in the hydraulic fill sea mud surface in each hydraulic reclamation pond by 1: 5 dry weight percentage; Described saponification slag and hydraulic fill sea mud are fully mixed airing; Saponification slag after mixing, the airing and hydraulic fill sea mud mix are worked dry 15 days of heap solarization, and the water content of the saponification dregs of formation is weight percentage 25%; With the compacting of described saponification dregs paving and leveling, its dry density is 1.42g/cm
3, reinforcing the groundwork bearing capacity is 90kPa.
Embodiment 3
The reinforcing area subregion is formed the hydraulic reclamation pond, and the part moisture content in each hydraulic reclamation pond hydraulic reclamation river silt is fallen in natural evaporation, makes hydraulic reclamation river silt possess predetermined bearing capacity; Saponification slag and hydraulic reclamation river silt are distributed in the hydraulic reclamation river silt surface in each hydraulic reclamation pond by 1: 4 dry weight percentage; Described saponification slag and hydraulic reclamation river silt are fully mixed airing; Saponification slag after mixing, the airing and hydraulic reclamation river silt mix are worked dry 20 days of heap solarization, and the water content of the saponification dregs of formation is weight percentage 30%; With the compacting of described saponification dregs paving and leveling, its dry density is 1.45g/cm
3, reinforcing the groundwork bearing capacity is 120kPa.
Embodiment 4
The reinforcing area subregion is formed the hydraulic reclamation pond, and the part moisture content in each hydraulic reclamation pond hydraulic reclamation river silt is fallen in natural evaporation, makes hydraulic reclamation river silt possess predetermined bearing capacity; Saponification slag and hydraulic reclamation river silt are distributed in the hydraulic reclamation river silt surface in each hydraulic reclamation pond by 1: 3 dry weight percentage; Described saponification slag and hydraulic reclamation river silt are fully mixed airing; Saponification slag after mixing, the airing and hydraulic reclamation river silt mix are worked dry 10 days of heap solarization, and the water content of the saponification dregs of formation is weight percentage 35%; With the compacting of described saponification dregs paving and leveling, its dry density is 1.40g/cm
3, reinforcing the groundwork bearing capacity is 80kPa.
Embodiment 5
The reinforcing area subregion is formed the hydraulic reclamation pond, and the part moisture content in each hydraulic reclamation pond hydraulic fill sea mud is fallen in natural evaporation, makes hydraulic fill sea mud possess predetermined bearing capacity; Saponification slag and hydraulic fill sea mud are distributed in the hydraulic fill sea mud surface in each hydraulic reclamation pond by 1: 3.5 dry weight percentage; Described saponification slag and hydraulic fill sea mud are fully mixed airing; Saponification slag after mixing, the airing and hydraulic fill sea mud mix are worked dry 15 days of heap solarization, and the water content of the saponification dregs of formation is weight percentage 20%; With the compacting of described saponification dregs paving and leveling, its dry density is 1.35g/cm
3, reinforcing the groundwork bearing capacity is 100kPa.
The heavy metal pollution research of 1 saponification dregs
The saponification dregs heavy metal test result that table 1 makes according to embodiment 1-5
| Element | Content (mg/kg) | |||||
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Primary standard | |
| Copper (Cu) | 22.5 | 24.1 | 22.9 | 18.0 | 19.5 | 35 |
| Zinc (Zn) | 61.2 | 64.0 | 61.0 | 57.4 | 58.3 | 100 |
| Plumbous (Pb) | 9.15 | 10.24 | 9.46 | 8.8 | 9.1 | 35 |
| Cadmium (Cd) | 0.11 | 0.14 | 0.12 | 0.10 | 0.1 | 0.20 |
| Nickel (Ni) | 29.4 | 32.5 | 30.7 | 27.4 | 28.5 | 40 |
| Chromium (Cr) | 20.5 | 22.5 | 21.4 | 18.1 | 19.2 | 90 |
| Mercury (Hg) | 0.13 | 0.15 | 0.12 | 0.1 | 0.1 | 0.15 |
| Arsenic (As) | 6.75 | 6.94 | 6.75 | 6.3 | 6.5 | 15 |
| PH | - | - | ||||
According to " analytical method in modern age of soil element " (1992, the China Environmental Science Press), content of beary metal in the saponification dregs is tested, and, contrasted with soil environment quality standard primary standard with reference to " soil environment quality standard ".
As can be known from the above table, the content of beary metal of saponification dregs satisfies soil environment quality standard primary standard, so the saponification dregs can not cause heavy metal pollution to environment.
The Research on Radioactive Pollution of 2 saponification dregs
Radioactive material can be measured with specific radioactivity.
Specific radioactivity is meant: the merchant that certain nucleic radioactive activity in the material gets divided by the quality of this material.
Expression formula is: C=A/m
In the formula:
C---specific radioactivity, unit are Becquerel/kilogram (Bq/kg);
A---nucleic radioactive activity, unit is Becquerel (Bq);
The quality of m---material, unit is a kilogram (kg).
The radiological measuring object is the saponification dregs of the different proportionings that make by embodiment 1-5, and the specific radioactivity of saponification dregs is detected, and test item has total α and total β.
Table 2: specific radioactivity test result
| Project | Specific radioactivity (Bq/kg) | |||||
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Background level | |
| Total α | 667 | 675 | 663 | 655 | 660 | 420-650 |
| Total β | 664 | 680 | 661 | 643 | 651 | 740-1130 |
With reference to Efficiency in Buildings in Tianjin Area soil radioactivity background level, The above results is analyzed, and as can be seen, the radioactivity of saponification dregs is suitable with Efficiency in Buildings in Tianjin Area soil radioactivity background level, satisfy " the radioactive material nucleic is limited the quantity of " standard, can not cause radioactive pollution.
Claims (5)
1. saponification dregs, it is characterized in that: it is made up of saponification slag and saturated dredger soft soil, and the dry weight percentage of described saponification slag and saturated dredger soft soil is 1: 3-1: 5.
2. saponification dregs according to claim 1 is characterized in that: the dry weight percentage of described saponification slag and saturated dredger soft soil is 1: 4-1: 5.
3. saponification dregs according to claim 1 and 2 is characterized in that: described saturated dredger soft soil is ooze or river silt.
4. saponification slag is reinforced the method for saturated dredger soft soil, it is characterized in that it may further comprise the steps:
(1) the reinforcing area subregion is formed the hydraulic reclamation pond, remove the part moisture content in each hydraulic reclamation pond saturated dredger soft soil, make saturated dredger soft soil possess predetermined bearing capacity;
(2) be 1 with saponification slag by the dry weight percentage of saponification slag and saturated dredger soft soil: 3-1: 5 are distributed in the saturated dredger soft soil surface in each hydraulic reclamation pond;
(3) described saponification slag and saturated dredger soft soil are fully mixed airing;
(4) will mix, the saponification slag after the airing and saturated dredger soft soil mix work heap and shone dry 5-20 days, the water content of the saponification dregs of the formation 20%-40% that is weight percentage;
(5) with the compacting of described saponification dregs paving and leveling, its dry density is 1.30-1.45g/cm
3
5. saponification slag according to claim 4 is reinforced the method for saturated dredger soft soil, it is characterized in that: the 25%-35% that is weight percentage of the water content on the saponification slag in the described step (4), after the saponification dregs paving and leveling compacting in the described step (5), its dry density is 1.35-1.45g/cm
3
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100144808A CN100346036C (en) | 2005-07-14 | 2005-07-14 | Method of solidifying blow filling soft soil using saponificated slag soil and saponificated slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100144808A CN100346036C (en) | 2005-07-14 | 2005-07-14 | Method of solidifying blow filling soft soil using saponificated slag soil and saponificated slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1718935A CN1718935A (en) | 2006-01-11 |
| CN100346036C true CN100346036C (en) | 2007-10-31 |
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| CN104988938B (en) * | 2015-05-20 | 2017-07-07 | 上海市建工设计研究院有限公司 | Area border on the sea containing coral reef debris layer water-stop curtain body construction processing method in the South Sea |
| CN108468325B (en) * | 2018-03-23 | 2020-11-10 | 葛洲坝中固科技股份有限公司 | Large-area coastal beach sea mud rapid curing construction method |
| CN109322297A (en) * | 2018-11-15 | 2019-02-12 | 秦震 | Method and the modified soil body using the saponification slag modification soft base soil body |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998004649A1 (en) * | 1996-07-25 | 1998-02-05 | Notwheat Pty. Ltd. | Method of ground treatment |
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2005
- 2005-07-14 CN CNB2005100144808A patent/CN100346036C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998004649A1 (en) * | 1996-07-25 | 1998-02-05 | Notwheat Pty. Ltd. | Method of ground treatment |
Non-Patent Citations (3)
| Title |
|---|
| 皂化渣增钙粉煤灰土路用性能研究 赵可、李海来、刘中林，粉煤灰综合利用，第2000卷第2期 2000 * |
| 皂化渣稳定土路用技术性能研究 闫涛，公路交通技术，第2002卷第1期 2002 * |
| 真空预压法加固软土地基的效果观测分析 闫澎旺、朱平、刘润，水利学报，第2004卷第3期 2004 * |
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