CN106592570B - A kind of basement process technique using prefabricated compacted sections tailings reinforcing body - Google Patents
A kind of basement process technique using prefabricated compacted sections tailings reinforcing body Download PDFInfo
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- CN106592570B CN106592570B CN201611095904.2A CN201611095904A CN106592570B CN 106592570 B CN106592570 B CN 106592570B CN 201611095904 A CN201611095904 A CN 201611095904A CN 106592570 B CN106592570 B CN 106592570B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
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- Agronomy & Crop Science (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
A kind of basement process technique using prefabricated compacted sections tailings reinforcing body, comprising the following steps: (1) quantity and size of iron milltailings reinforcing body are determined according to design requirement；The iron milltailings reinforcing body is by integral cylindrical structure and inverted round stage structure composition, steel wire or steel mesh are set in the iron milltailings reinforcing body, slip casting around pile pipe is evenly distributed with along steel wire wall or steel mesh wall, the center of steel wire or steel mesh is equipped with plasma discharge duct, and pile end grouting pipe is located at plasma discharge duct center；(2) prebored hole is formed in stake position using drilling machine, and uses mud off, the depth of the prebored hole reaches design bearing course at pile end；(3) iron milltailings reinforcing body indentation prebored hole to depth is reached by the bearing course at pile end of design requirement using static pressure method, and slurry coat method is discharged through plasma discharge duct；(4) to the slip casting around pile pipe slip casting, and 4 ~ 8h is solidified, then to the pile end grouting pipe slip casting, stop slip casting after reaching grout injection control index, forms complete ground.
Description
Technical field
The present invention relates to industrial residue utilization and building foundation treatment technical fields, are squeezed more particularly to a kind of using prefabricated
The basement process technique of close sections tailings reinforcing body.
Background technique
Iron milltailings are the ore waste residues formed with iron ore digging and ore dressing.Generally adopting one ton of iron ore will form about 3-5m3
Tailing, the annual mining activity in China forms a large amount of iron tailings.Discharge, the accumulation of tailing occupy a large amount of soil money
Source, the dust being formed simultaneously also pollute the environment.The comprehensive utilization of tailing is all the time all by national policy emphasis drum
It encourages and supports.Technology more mature in terms of building has the blockwork being such as laid with for ground, for partially replacing at present
Concrete fine aggregate etc..
Summary of the invention
The present invention improves on the basis of existing method of comprehensive utilization to further develop the new using channel of iron milltailings
The utilization rate of iron milltailings provides a kind of basement process technique using prefabricated compacted sections tailings reinforcing body.Technology of the invention
Scheme are as follows:
A kind of basement process technique using prefabricated compacted sections tailings reinforcing body, comprising the following steps:
(1) quantity and size of iron milltailings reinforcing body are determined according to design requirement；The iron milltailings reinforcing body is by integral
Cylindrical structure and inverted round stage structure composition, the diameter ratio of the inverted round stage structure upper and lower surface be 1.15 ~ 1.35, the iron
Steel wire or steel mesh are set in tailings reinforcing body, are evenly distributed with slip casting around pile pipe, steel wire along steel wire wall or steel mesh wall
Or the center of steel mesh is equipped with plasma discharge duct, pile end grouting pipe is located at plasma discharge duct center；
The slip casting around pile bottom of the tube connection current divider one and non-return valve one, top are equipped with for connecting plugging into for grouting pump
Guan Yi；The pile end grouting pipe is equipped with grouting stop-valve, and pile end grouting bottom of the tube connects current divider two and non-return valve two, and top, which is equipped with, to be used
In the connecting pipe two of connection grouting pump；It the current divider one, current divider two, non-return valve one, non-return valve two, connecting pipe one and plugs into
Pipe two is respectively positioned on outside the reinforcing body；
(2) prebored hole is formed in stake position using drilling machine, and uses mud off, the depth of the prebored hole reaches design
Bearing course at pile end, preboring bore dia are identical as the lower surface diameter of the iron milltailings reinforcing body inverted round stage；
(3) iron milltailings reinforcing body indentation prebored hole to depth is reached to the bearing course at pile end of design requirement using static pressure method,
And slurry coat method is discharged through plasma discharge duct；
(4) to the slip casting around pile pipe slip casting, and 4 ~ 8h is solidified, then to the pile end grouting pipe slip casting, reach slip casting control
Stop slip casting after index processed, forms complete ground.
In above-mentioned technique, the pile end grouting pipe, grouting stop-valve, current divider two, non-return valve two and connecting pipe two are in the step
Suddenly (4) to before the pile end grouting pipe slip casting installation into the iron milltailings reinforcing body.
In above-mentioned technique, the production method of the iron milltailings reinforcing body are as follows: integral cylinder is made according to design requirement
The mold of structure and inverted round stage structure；According to iron milltailings: cement: the quality proportioning of water is (5 ~ 5.5): (1 ~ 1.4): (1.2 ~
1.4) mixture is prepared, adulterating agent is added, is injected in the mold after mixing evenly, successively vibrates, demoulds, obtaining institute after health
Iron milltailings reinforcing body is stated, compression strength is 6 ~ 10MPa.
In above-mentioned technique, the iron milltailings are used according to the GB51032 in " iron tailings sand concrete application technology specification "
The tail medium coarse sand and/or tail Extra-fine sand iron milltailings that specification examines radiation qualified.
In above-mentioned technique, the cylindrical structure height is 0.3 ~ 0.5m.
In above-mentioned technique, the inverted round stage structure height is greater than 3m.
In above-mentioned technique, plasma discharge duct bottom is equipped with only stock tank, installs grouting stop-valve, the plasma discharge in the only stock tank
The diameter in duct is 100 ~ 300mm.
In above-mentioned technique, the material of the slip casting around pile pipe and the pile end grouting pipe includes PVC, steel.
In above-mentioned technique, the non-return valve one and the non-return valve two are located at the current divider one and the current divider
Two top.
In above-mentioned technique, the adulterating agent includes flyash, water-reducing agent.
In above-mentioned technique, the bearing capacity of the complete ground reaches 200 ~ 400KPa.
The invention has the benefit that
1, the present invention is using industrial residue --- iron milltailings are reinforced as the raw material for making reinforcing body, the prefabricated compacted type of formation
Body intensity fully meets the requirement to basement process up to 6 ~ 10MPa, Bearing Capacity of Composite Foundation that treated up to 200 ~
300KPa, and technique waste residue utilizes the pollution sources and potential geological disaster that original accumulation place had both been eliminated after finishing
Source, and the soil occupied originally can be vacateed.
2, the prefabricated compacted type reinforcing body that the present invention designs uses single-unit inverted round table shape, passes through rotary table side wall soil compaction
Effect makes reinforcing body preferably in conjunction with soil layer, reinforces to form good stop grouting plug for reinforcing body side wall grouting, to give full play to
Reinforcing body side friction power creates condition.And the present invention uses side wall grouting and the Multiple-step mode of end slip casting for sufficiently hair
It waves bearing capacity of pile tip and creates advantage.
3, the present invention is easy to industrialized production, can accumulate place in industrial residue and found the factory production, substantially reduce and be produced into
This, improves production efficiency, suitable for the reinforcing of various soil body grounds, has a wide range of application.
Detailed description of the invention
Fig. 1 is reinforcing body structural schematic diagram of the invention, wherein 1- connecting pipe two, 2- connecting pipe one, the circle of 3- reinforcing body
Rod structure, the inverted round stage structure of 4- reinforcing body, 5- steel wire (muscle) net, 6- slip casting around pile pipe, 7- pile end grouting pipe, 8- stop stock tank,
9- grouting stop-valve, 10- current divider one, 11- current divider two.
Fig. 2 is the sectional view in the face A-A in Fig. 1, wherein 14- plasma discharge duct.
Specific embodiment
The present invention is described in further details with specific embodiment with reference to the accompanying drawing, described is to solution of the invention
It releases rather than limits.
Embodiment 1
A kind of basement process technique using prefabricated compacted sections tailings reinforcing body, in Liaoning, metallurgical works land used is real
It applies, comprising the following steps:
(1) quantity and size of iron milltailings reinforcing body are determined according to design requirement；The iron milltailings reinforcing body is by integral
Height be 0.5m cylindrical structure 3 and height be 3.5m inverted round stage structure 4 form, Fig. 1 and Fig. 2 provide the reinforcing body
Structural schematic diagram, the diameter ratio of 4 upper and lower surface of inverted round stage structure is 1.2, and the lower surface diameter is 600mm, institute
It states and sets steel wire 5 in iron milltailings reinforcing body, slip casting around pile pipe 6 is evenly distributed with along steel wire wall, in steel wire or steel mesh
Centre is equipped with plasma discharge duct 14, and plasma discharge duct bottom is equipped with only stock tank 8, pile end grouting pipe 7 and is located at plasma discharge duct center,
The diameter in the plasma discharge duct is 300mm；
The slip casting around pile bottom of the tube connection current divider 1 and non-return valve one, top are equipped with for connecting connecing for grouting pump
Refute pipe 1；The pile end grouting pipe is equipped with grouting stop-valve 9, and the grouting stop-valve 9 is installed in the only stock tank 8, pile end grouting pipe 7
Bottom connects current divider 2 11 and non-return valve two, and top is equipped with the connecting pipe 21 for connecting grouting pump；The current divider one
10, current divider 2 11, non-return valve one, non-return valve two, connecting pipe 1 and connecting pipe 21 are respectively positioned on outside the reinforcing body, described
Non-return valve one and the non-return valve two are located at the top of the current divider 1 and the current divider 2 11；
(2) prebored hole is formed in stake position using drilling machine, and uses mud off, the depth of the prebored hole reaches design
Bearing course at pile end, preboring bore dia are identical as the lower surface diameter of the iron milltailings reinforcing body inverted round stage；
(3) iron milltailings reinforcing body indentation prebored hole to depth is reached to the bearing course at pile end of design requirement using static pressure method,
And slurry coat method is discharged through plasma discharge duct；
(4) to the slip casting around pile pipe slip casting, and 4h is solidified, then to the pile end grouting pipe slip casting, reaches grout injection control
Stop slip casting after index, form complete ground, bearing capacity reaches 300KPa.
In above-mentioned technique, the pile end grouting pipe, grouting stop-valve, current divider two, non-return valve two and connecting pipe two are in the step
Suddenly (4) to being installed before the pile end grouting pipe slip casting.
In above-mentioned technique, the production method of the iron milltailings reinforcing body are as follows: reversed round bench shaped mould is made according to design requirement
Tool；According to iron milltailings: cement: the quality proportioning of water is that 5.0:1.4:1.2 prepares mixture, flyash is added, dosage is cement
The 15% of dosage is injected after mixing evenly in the mold, is successively vibrated, is demoulded, obtaining the iron milltailings reinforcing body after health,
Compression strength is 8.5MPa.
In above-mentioned technique, the iron milltailings are used according to the GB51032 in " iron tailings sand concrete application technology specification "
The tail medium coarse sand iron milltailings that specification examines radiation qualified.
In above-mentioned technique, the material selection steel of the slip casting around pile pipe and the pile end grouting pipe.
Embodiment 2
A kind of basement process technique using prefabricated compacted sections tailings reinforcing body, it is real in Liaoning food processing factory land used
It applies, comprising the following steps:
(1) quantity and size of iron milltailings reinforcing body are determined according to design requirement；The iron milltailings reinforcing body is by integral
Height be 0.5m cylindrical structure 3 and height be 5m inverted round stage structure 4 form, Fig. 1 and Fig. 2 provide the reinforcing body
Structural schematic diagram, the diameter ratio of 4 upper and lower surface of inverted round stage structure are 1.25, and the lower surface diameter is 400mm, described
Steel wire 5 is set in iron milltailings reinforcing body, slip casting around pile pipe 6, the center of steel wire or steel mesh are evenly distributed with along steel wire wall
Equipped with plasma discharge duct 14, plasma discharge duct bottom is equipped with only stock tank 8, pile end grouting pipe 7 and is located at plasma discharge duct center, institute
The diameter for stating plasma discharge duct is 250mm；
The slip casting around pile bottom of the tube connection current divider 1 and non-return valve one, top are equipped with for connecting connecing for grouting pump
Refute pipe 1；The pile end grouting pipe is equipped with grouting stop-valve 9, and the grouting stop-valve 9 is installed in the only stock tank 8, pile end grouting pipe 7
Bottom connects current divider 2 11 and non-return valve two, and top is equipped with the connecting pipe 21 for connecting grouting pump；The current divider one
10, current divider 2 11, non-return valve one, non-return valve two, connecting pipe 1 and connecting pipe 21 are respectively positioned on outside the reinforcing body, described
Non-return valve one and the non-return valve two are located at the top of the current divider 1 and the current divider 2 11；
(2) prebored hole is formed in stake position using drilling machine, and uses mud off, the depth of the prebored hole reaches design
Bearing course at pile end, preboring bore dia are identical as the lower surface diameter of the iron milltailings reinforcing body inverted round stage；
(3) iron milltailings reinforcing body indentation prebored hole to depth is reached to the bearing course at pile end of design requirement using static pressure method,
And slurry coat method is discharged through plasma discharge duct；
(4) to the slip casting around pile pipe slip casting, and 6h is solidified, then to the pile end grouting pipe slip casting, reaches grout injection control
Stop slip casting after index, form complete ground, bearing capacity reaches 250KPa.
In above-mentioned technique, the pile end grouting pipe, grouting stop-valve, current divider two, non-return valve two and connecting pipe two are in the step
Suddenly (4) to being installed before the pile end grouting pipe slip casting.
In above-mentioned technique, the production method of the iron milltailings reinforcing body are as follows: reversed round bench shaped mould is made according to design requirement
Tool；According to iron milltailings: cement: the quality proportioning of water is that 5.2:1.1:1.3 prepares mixture, flyash is added, dosage is cement
The 12% of dosage is injected after mixing evenly in the mold, is successively vibrated, is demoulded, obtaining the iron milltailings reinforcing body after health,
Compression strength is 6.5MPa.
In above-mentioned technique, the iron milltailings are used according to the GB51032 in " iron tailings sand concrete application technology specification "
The tail Extra-fine sand iron milltailings that specification examines radiation qualified.
In above-mentioned technique, the material selection steel of the slip casting around pile pipe and the pile end grouting pipe.
Embodiment 3
A kind of basement process technique using prefabricated compacted sections tailings reinforcing body is implemented, packet in Liaoning highway land
Include following steps:
(1) quantity and size of iron milltailings reinforcing body are determined according to design requirement；The iron milltailings reinforcing body is by integral
Height be 0.5m cylindrical structure 3 and height be 8m inverted round stage structure 4 form, Fig. 1 and Fig. 2 provide the reinforcing body
Structural schematic diagram, the diameter ratio of 4 upper and lower surface of inverted round stage structure are 1.2, and the lower surface diameter is 600mm, described
Steel wire 5 is set in iron milltailings reinforcing body, is evenly distributed with slip casting around pile pipe 6, the center of steel wire or steel mesh along steel wire wall
Equipped with plasma discharge duct 14, plasma discharge duct bottom is equipped with only stock tank 8, pile end grouting pipe 7 and is located at plasma discharge duct center, institute
The diameter for stating plasma discharge duct is 300mm；
The slip casting around pile bottom of the tube connection current divider 1 and non-return valve one, top are equipped with for connecting connecing for grouting pump
Refute pipe 1；The pile end grouting pipe is equipped with grouting stop-valve 9, and the grouting stop-valve 9 is installed in the only stock tank 8, pile end grouting pipe 7
Bottom connects current divider 2 11 and non-return valve two, and top is equipped with the connecting pipe 21 for connecting grouting pump；The current divider one
10, current divider 2 11, non-return valve one, non-return valve two, connecting pipe 1 and connecting pipe 21 are respectively positioned on outside the reinforcing body, described
Non-return valve one and the non-return valve two are located at the top of the current divider 1 and the current divider 2 11；
(2) prebored hole is formed in stake position using drilling machine, and uses mud off, the depth of the prebored hole reaches design
Bearing course at pile end, preboring bore dia are identical as the lower surface diameter of the iron milltailings reinforcing body inverted round stage；
(3) iron milltailings reinforcing body indentation prebored hole to depth is reached to the bearing course at pile end of design requirement using static pressure method,
And slurry coat method is discharged through plasma discharge duct；
(4) to the slip casting around pile pipe slip casting, and 8h is solidified, then to the pile end grouting pipe slip casting, reaches grout injection control
Stop slip casting after index, form complete ground, bearing capacity reaches 250KPa.
In above-mentioned technique, the pile end grouting pipe, grouting stop-valve, current divider two, non-return valve two and connecting pipe two are in the step
Suddenly (4) to being installed before the pile end grouting pipe slip casting.
In above-mentioned technique, the production method of the iron milltailings reinforcing body are as follows: reversed round bench shaped mould is made according to design requirement
Tool；According to iron milltailings: cement: the quality proportioning of water is that 5.0:1.2:1.3 prepares mixture, flyash is added, dosage is cement
The 15% of dosage is injected after mixing evenly in the mold, is successively vibrated, is demoulded, obtaining the iron milltailings reinforcing body after health,
Compression strength is 6.5MPa.
In above-mentioned technique, the iron milltailings are used according to the GB51032 in " iron tailings sand concrete application technology specification "
The tail medium coarse sand and tail Extra-fine sand iron milltailings that specification examines radiation qualified.
In above-mentioned technique, the material selection PVC of the slip casting around pile pipe and the pile end grouting pipe.
Claims (8)
1. a kind of basement process technique using prefabricated compacted sections tailings reinforcing body, it is characterised in that the following steps are included:
(1) quantity and size of iron milltailings reinforcing body are determined according to design requirement；The iron milltailings reinforcing body is by integral circle
Rod structure and inverted round stage structure composition, the diameter ratio of the inverted round stage structure upper and lower surface are 1.15 ~ 1.35, the iron milltailings
Steel wire or steel mesh are set in reinforcing body, are evenly distributed with slip casting around pile pipe, steel wire or steel along steel wire wall or steel mesh wall
The center of muscle net is equipped with plasma discharge duct, and pile end grouting pipe is located at plasma discharge duct center, wherein the cylindrical structure height is
0.3 ~ 0.5m, the inverted round stage structure height are greater than 3m；
The production method of the iron milltailings reinforcing body are as follows: integral cylindrical structure and inverted round stage structure are made according to design requirement
Mold；According to iron milltailings: cement: the quality proportioning of water is (5 ~ 5.5): (1 ~ 1.4): (1.2 ~ 1.4) prepare mixture, are added
Adulterating agent is injected after mixing evenly in the mold, is successively vibrated, is demoulded, obtaining the iron milltailings reinforcing body, resistance to compression after health
Intensity is 6 ~ 10MPa；
The slip casting around pile bottom of the tube connection current divider one and non-return valve one, top are equipped with the connecting pipe for connecting grouting pump
One；The pile end grouting pipe is equipped with grouting stop-valve, and pile end grouting bottom of the tube connects current divider two and non-return valve two, and top is equipped with and is used for
Connect the connecting pipe two of grouting pump；The current divider one, current divider two, non-return valve one, non-return valve two, connecting pipe one and connecting pipe
Two are respectively positioned on outside the reinforcing body；
(2) prebored hole is formed in stake position using drilling machine, and uses mud off, the depth of the prebored hole reaches design stake end
Supporting course, preboring bore dia are identical as the lower surface diameter of the iron milltailings reinforcing body inverted round stage；
(3) iron milltailings reinforcing body indentation prebored hole to depth is reached to the bearing course at pile end of design requirement using static pressure method, and will
Slurry coat method is discharged through plasma discharge duct；
(4) to the slip casting around pile pipe slip casting, and 4 ~ 8h is solidified, then to the pile end grouting pipe slip casting, reach grout injection control and refer to
Stop slip casting after mark, forms complete ground.
2. a kind of basement process technique using prefabricated compacted sections tailings reinforcing body according to claim 1, feature
It is the pile end grouting pipe, grouting stop-valve, current divider two, non-return valve two and connecting pipe two in the step (4) to the stake
Installation is into the iron milltailings reinforcing body before holding Grouting Pipe slip casting.
3. a kind of basement process technique using prefabricated compacted sections tailings reinforcing body according to claim 1, feature
Be that the iron milltailings are used examines radiation qualified according to the GB51032 specification in " iron tailings sand concrete application technology specification "
Tail medium coarse sand and/or tail Extra-fine sand iron milltailings.
4. a kind of basement process technique using prefabricated compacted sections tailings reinforcing body according to claim 1, feature
It is that plasma discharge duct bottom is equipped with only stock tank, grouting stop-valve is installed, the diameter in the plasma discharge duct is 100 in the only stock tank
~300mm。
5. a kind of basement process technique using prefabricated compacted sections tailings reinforcing body according to claim 1, feature
The material for being the slip casting around pile pipe and the pile end grouting pipe is PVC or steel.
6. a kind of basement process technique using prefabricated compacted sections tailings reinforcing body according to claim 1, feature
It is that the non-return valve one and the non-return valve two are located at the top of the current divider one and the current divider two.
7. a kind of basement process technique using prefabricated compacted sections tailings reinforcing body according to claim 1, feature
It is that the adulterating agent includes flyash, water-reducing agent.
8. a kind of basement process technique using prefabricated compacted sections tailings reinforcing body according to claim 1, feature
It is that the bearing capacity of the complete ground reaches 200 ~ 400KPa.
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| CN201611095904.2A CN106592570B (en) | 2016-12-02 | 2016-12-02 | A kind of basement process technique using prefabricated compacted sections tailings reinforcing body |
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| CN108978636A (en) * | 2018-08-28 | 2018-12-11 | 中冶沈勘工程技术有限公司 | A kind of compacted type shaped pile of CHARACTERISTICS OF TAILINGS SAND and its composite foundation treatment process |
| CN111501743A (en) * | 2020-04-23 | 2020-08-07 | 中核第四研究设计工程有限公司 | Titanium white tailing curing method |
| CN112649263B (en) * | 2020-12-11 | 2023-01-24 | 浙江科技学院 | Cylindrical sample undisturbed soaking type circumferential grouting sample preparation instrument and sample preparation method |
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| JPH0247421A (en) * | 1988-08-06 | 1990-02-16 | Shin Gijutsu Koei Kk | Bag-shaped ground anchor body and anchoring mechanism therefor |
| US20060159525A1 (en) * | 2005-01-03 | 2006-07-20 | Ramzy Moumneh | Grout injecting/structure anchoring system |
| CN102465524A (en) * | 2010-11-11 | 2012-05-23 | 上海市政工程设计研究总院 | Double radial mesh-cage sand-gravel pile and construction process thereof |
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