CN109653190A - A kind of large-scale heavy duty Equipment Foundations grouting and consolidation on foundation technique - Google Patents
A kind of large-scale heavy duty Equipment Foundations grouting and consolidation on foundation technique Download PDFInfo
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- CN109653190A CN109653190A CN201811508269.5A CN201811508269A CN109653190A CN 109653190 A CN109653190 A CN 109653190A CN 201811508269 A CN201811508269 A CN 201811508269A CN 109653190 A CN109653190 A CN 109653190A
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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
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a kind of large-scale heavy duty Equipment Foundations grouting and consolidation on foundation technique, 1, lay injected hole along Equipment Foundations periphery and angle point；2, setting backfill fills consolidation injected hole；3, inclined hole slip casting is laid；4, the deviation of hole location and design hole location is not greater than 30cm；5, important equipment basis is the same as hole location difference bored grouting sequence, according to field condition, in important equipment basal perimeter slip casting, the construction of 5 injected holes is carried out in determining each hole location, by field test research, important equipment foundation slip casting strengthening construction sequence is determined are as follows: 1. carry out backfill filling consolidation slip casting；2. shallow-layer straight hole list liquid ihrigising slip casting；3. the filling consolidation slip casting of shallow-layer straight hole；4. shallow-layer inclined hole list liquid ihrigising slip casting；5. the filling consolidation slip casting of shallow-layer inclined hole；6. the filling consolidation slip casting of deep layer straight hole；7. the filling consolidation slip casting of deep layer inclined hole；6, using being segmented pure pressure type grouting process from top to bottom.
Description
Technical field
The present invention relates to a kind of large-scale heavy duty Equipment Foundations grouting and consolidation on foundation techniques.
Background technique
In production practice, since foundation soil stability changes, Equipment Foundations are caused to occur to sink, offset, thus
The case where equipment operates normally is influenced to happen occasionally.The case where foundation bearing capacity requirement cannot be met for ground soil property, generally
It is administered using grouting and reinforcing.If Equipment Foundations are smaller, basis can be directly removed under normal circumstances, carried out foundation grouting and added
Gu.But for the equipment of large-scale heavy duty lotus, due to removing the influence for pouring basis again to production and basal perimeter facility
It is larger and with high costs, it is difficult to use under normal circumstances.And use under conditions of not removing Equipment Foundations, how to ensure equipment
Ground beneath grouting and consolidation on foundation construction quality, not yet has experience that can use for reference at present.
Summary of the invention
The purpose of the present invention is to provide a kind of large-scale heavy duty Equipment Foundations grouting and consolidation on foundation techniques, not remove
Under conditions of Equipment Foundations, by the globality of grouting reinforcement technique raising large-scale heavy duty equipment ground, osmotic stability and disappear
Except collapsibility, there is stronger practicability, reliability and economy.
The object of the present invention is achieved like this, a kind of large-scale heavy duty Equipment Foundations grouting and consolidation on foundation technique, 1, will note
It starches hole to lay along Equipment Foundations periphery and angle point, pitch of holes 2.0m, the spacing between injected hole and Equipment Foundations periphery exists
Between 1.5-2.5m；2, setting backfill fills consolidation injected hole, and according to field condition, backfill soil thickness 2.5m or so is being infused
Hole location is starched, the shallow-layer filling consolidation hole of setting hole depth 2.5m carries out shallow-layer filling consolidation slip casting in the hole location slip casting in advance, with
Fertile slot backfill is consolidated, envelope pressure energy power is improved；3, inclined hole slip casting is laid, is provided with 2 groups to devices basis in each slip casting hole location
The inclined inclined hole of subjacent is respectively as follows: hole depth 8.0m, inclination angle 30o, shallow layer grouting of the azimuth perpendicular to ball mill periphery
Hole；Hole depth 28m, inclination angle 10o, azimuth guarantee middle part under Ball Mill Foundation perpendicular to the deep layer injected hole on ball mill periphery
The slip casting effect of position；4, important equipment basis drilling construction technical requirements: (1) drilling construction generally requires: drilling and deviational survey: adopting
With small-bore geology slewing drilling machine, diamond bit drilling uses two-point method earth anchorage, with bevel protractor and circumferentor before aperture
Drilling machine vertical shaft is corrected, drillhole inclination survey selects I type inclinometer of KXP-, and general every 10 m is surveyed 1 time；Bore flushing and simple pressure water: it adopts
It is pulsed and is rinsed with high pressure water, washing time is no less than 30 min, 10 min of Hui Qingshui, simple packer permeability test is carried out before grouting,
Press 1.0 Mpa of water pressure；Boring aperture is φ 90mm- φ 150mm, and aperture need to complement one another with slip casting embolism；The hole location of drilling,
Depth, aperture, drilling sequences etc. should execute as required, and the deviation of hole location and design hole location is not greater than 30cm；(2) shallow-layer bores
Hole construction requirement: shallow layer drilling refers to the drilling for being mainly used for the hole depth of single liquid ihrigising in 0-8m, shallow layer drilling should once at
Hole；(3) deep layer hole construction requirement: deep layer drill refers to that hole depth reaches design drilling depth, main nearly deep layer filling consolidation slip casting
Drilling should first creep into 6.0m when deep layer drill is constructed, tripping in φ 110mm or so casing, and casing and hole wall gap are carried out
After Seal treatment, casing and the closing of hole wall gap reach intensity requirement, deep well drilling is carried out, until design hole depth；Injected hole exists
After drilling, Ying Jinhang bore flushing, bottom hole deposition thickness must not exceed the 2.0% of design hole depth；5, important equipment basis is same
Hole location difference bored grouting sequence, it is equal in determining each hole location in important equipment basal perimeter slip casting according to field condition
The construction for carrying out 5 injected holes determines important equipment foundation slip casting strengthening construction sequence by field test research are as follows: 1. into
The filling consolidation slip casting of row backfill；2. shallow-layer straight hole list liquid ihrigising slip casting；3. the filling consolidation slip casting of shallow-layer straight hole；4. shallow-layer is oblique
Hole list liquid ihrigising slip casting；5. the filling consolidation slip casting of shallow-layer inclined hole；6. the filling consolidation slip casting of deep layer straight hole；7. deep layer inclined hole fills
Consolidate slip casting；6, using being segmented pure pressure type grouting process: (1) grouting pressure MPa: shallow bore hole list liquid ihrigising slip casting pressure from top to bottom
Power 0.3, shallow bore hole filling consolidation grouting pressure 0.5, deep hole filling consolidation grouting pressure 1.0, ground backfill consolidate grouting pressure
0.1, shallow bore hole inclined hole filling consolidation grouting pressure 0.5, deep hole inclined hole filling consolidation grouting pressure 1.0；(2) slip casting section length,
Additional settlement caused by reduce because of slip casting is divided into 2 sections by shallow-layer and deep layer to slip casting section length, carries out the pure pressure injection of segmented
Slurry, it is specific to be segmented are as follows: 1. general place is 6m and two sections of 6-25m；2. important equipment basis straight hole is 8m and two sections of 8-28m；③
Important equipment basis inclined hole is 9m and two sections of 9-28m；(3) flow rate of grouting: provide as follows to flow rate of grouting: single liquid ihrigising is pressed
40-60L/min control；Filling consolidation hair is controlled by 70-100L/min；(4) grouting mode: compared by test, grouting and reinforcing
By dividing sequence to encrypt principle, using the comprehensive grouting for being segmented pure pressure type slip casting from top to bottom and being combined with the pure pressure type slip casting of orifice closing
Method, grouting mode are " shallow layer foundation waterglass-sodium chloride list liquid silication "+" consolidation slip casting and deep foundation base cement-sodium silicate list
Liquid filling consolidation, compacting grouting "；(5) grouting process process:
Slip casting prepares, 0-2.5m of drilling, backfill filling consolidation process, 0-8.0m of drilling, single liquid ihrigising slip casting, cleaning bottom of hole,
The slip casting of filling consolidation, 0-9.0m of rat holing, single liquid ihrigising slip casting, cleaning bottom of hole, the slip casting of filling consolidation, 0-6.0m of drill straight hole, under
Kong Guan, 6-28m of drill straight hole, filling consolidation slip casting, sealing of hole.
Test result shows: after shallow layer grouting is completed and condensed, having larger improvement to deep layer grouting quality.
Present invention process base geotechnical engineering condition in combination carries out slip casting for large-scale heavy duty Equipment Foundations lower part ground and adds
Gu.Thus through multiple Comparability test, distinctive deep layer inclined hole grouting filling operation order and operational method have been founded.And through engineering
Practical proof obtains good result.To large-scale heavy duty Equipment Foundations grouting and consolidation on foundation engineering prevention design and implementation, has and borrow
Mirror and directive significance.During grouting test, using inclined hole slip casting, by jacking counter-force under quality testing and Ball Mill Foundation
Stake, which is excavated, to be checked, position silication and consolidation effect are obvious among Ball Mill Foundation, have reached the strengthening quality of design requirement.Test
The result shows that being greater than the important equipment periphery of general place slip casting spacing in width, azimuth is laid perpendicular to basic sideline, no
Inclination injected hole with angle be completely it is necessary, effect is also apparent.
Detailed description of the invention
Below in conjunction with attached drawing, the present invention is described in further detail.
Fig. 1 is the arragement construction schematic diagram of injected hole of the present invention.
Specific embodiment
A kind of large-scale heavy duty Equipment Foundations grouting and consolidation on foundation technique, 1, by injected hole along Equipment Foundations periphery and angle point cloth
If pitch of holes 2.0m, the spacing between injected hole and Equipment Foundations periphery is between 1.5-2.5m；2, setting backfill fills
Injected hole is consolidated, according to field condition, the shallow-layer filling of hole depth 2.5m is arranged in slip casting hole location in backfill soil thickness 2.5m or so
Hole is consolidated, shallow-layer filling consolidation slip casting is carried out in advance in the hole location slip casting to consolidate fertile slot backfill and improves envelope pressure energy power；
3, inclined hole slip casting is laid, as shown in Figure 1, being provided with the inclined inclined hole of basic 1 subjacent of 2 groups to devices in each slip casting hole location
2,4, it is respectively as follows: 2 hole depth 8.0m of inclined hole, inclined hole 2 is relative to the inclination angle 30o between shallow-layer straight hole 3, and azimuth is perpendicular to ball mill
The shallow layer grouting hole on periphery；4 hole depth 28m of inclined hole, inclined hole 4 relative to the inclination angle 10o between deep layer straight hole 5, azimuth perpendicular to
The deep layer injected hole on ball mill periphery guarantees the slip casting effect at intermediate position under Ball Mill Foundation, the vertical shallow-layer straight hole 6 on side
To starch cap bore.4, important equipment basis drilling construction technical requirements: (1) drilling construction generally requires: drilling and deviational survey: using small
Bore geology slewing drilling machine, diamond bit drilling, uses two-point method earth anchorage before aperture, corrected with bevel protractor and circumferentor
Drilling machine vertical shaft, drillhole inclination survey select I type inclinometer of KXP-, and general every 10 m is surveyed 1 time；Bore flushing and simple pressure water: using high
Press water vein is dynamic to rinse, washing time is no less than 30 min, 10 min of Hui Qingshui, and simple packer permeability test is carried out before grouting, presses water
1.0 Mpa of pressure；Boring aperture is φ 90mm- φ 150mm, and aperture need to complement one another with slip casting embolism；Hole location, the depth of drilling
Degree, aperture, drilling sequences etc. should execute as required, and the deviation of hole location and design hole location is not greater than 30cm；(2) shallow layer drilling
Construction requirement: shallow layer drilling refers to the drilling for being mainly used for the hole depth of single liquid ihrigising in 0-8m, and shallow layer drilling answers one-step pore-creating；
(3) deep layer hole construction requirement: deep layer drill refers to that hole depth reaches design drilling depth, the brill of main nearly deep layer filling consolidation slip casting
Hole should first creep into 6.0m, tripping in φ 110mm or so casing, and close to casing and hole wall gap when deep layer drill is constructed
After processing, casing and the closing of hole wall gap reach intensity requirement, deep well drilling is carried out, until design hole depth；Injected hole is being crept into
After, Ying Jinhang bore flushing, bottom hole deposition thickness must not exceed the 2.0% of design hole depth；5, the same hole location in important equipment basis
Different bored grouting sequences, according to field condition, in important equipment basal perimeter slip casting, carry out in determining each hole location
The construction of 5 injected holes determines important equipment foundation slip casting strengthening construction sequence are as follows: 1. returned by field test research
Filling of banketing consolidates slip casting；2. shallow-layer straight hole list liquid ihrigising slip casting；3. the filling consolidation slip casting of shallow-layer straight hole；4. shallow-layer inclined hole list
Liquid ihrigising slip casting；5. the filling consolidation slip casting of shallow-layer inclined hole；6. the filling consolidation slip casting of deep layer straight hole；7. deep layer inclined hole filling consolidation
Slip casting；6, using being segmented pure pressure type grouting process: (1) grouting pressure MPa: shallow bore hole list liquid ihrigising grouting pressure from top to bottom
0.3, shallow bore hole filling consolidation grouting pressure 0.5, deep hole filling consolidation grouting pressure 1.0, ground backfill consolidation grouting pressure
0.1, shallow bore hole inclined hole filling consolidation grouting pressure 0.5, deep hole inclined hole filling consolidation grouting pressure 1.0；(2) slip casting section length,
Additional settlement caused by reduce because of slip casting is divided into 2 sections by shallow-layer and deep layer to slip casting section length, carries out the pure pressure injection of segmented
Slurry, it is specific to be segmented are as follows: 1. general place is 6m and two sections of 6-25m；2. important equipment basis straight hole is 8m and two sections of 8-28m；③
Important equipment basis inclined hole is 9m and two sections of 9-28m；(3) flow rate of grouting: provide as follows to flow rate of grouting: single liquid ihrigising is pressed
40-60L/min control；Filling consolidation hair is controlled by 70-100L/min；(4) grouting mode: compared by test, grouting and reinforcing
By dividing sequence to encrypt principle, using the comprehensive grouting for being segmented pure pressure type slip casting from top to bottom and being combined with the pure pressure type slip casting of orifice closing
Method, grouting mode are " shallow layer foundation waterglass-sodium chloride list liquid silication "+" consolidation slip casting and deep foundation base cement-sodium silicate list
Liquid filling consolidation, compacting grouting "；(5) grouting process process: slip casting prepares, 0-2.5m of drilling, backfill fill consolidation process,
0-8.0m of drilling, it single liquid ihrigising slip casting, cleaning bottom of hole, the slip casting of filling consolidation, 0-9.0m of rat holing, single liquid ihrigising slip casting, sweeps
Hole, the slip casting of filling consolidation, 0-6.0m of drill straight hole, lower opening pipe, 6-28m of drill straight hole, filling consolidation slip casting, sealing of hole.
Claims (1)
1. a kind of large-scale heavy duty Equipment Foundations grouting and consolidation on foundation technique, it is characterised in that carry out operation according to the following steps: 1,
Injected hole is laid along Equipment Foundations periphery and angle point, pitch of holes 2.0m, the spacing between injected hole and Equipment Foundations periphery
Between 1.5-2.5m；2, setting backfill fills consolidation injected hole, according to field condition, backfill soil thickness 2.5m or so,
Slip casting hole location, the shallow-layer filling consolidation hole of setting hole depth 2.5m, shallow-layer filling consolidation slip casting is carried out in the hole location slip casting in advance,
To consolidate fertile slot backfill, envelope pressure energy power is improved；3, inclined hole slip casting is laid, is provided with 2 groups to devices bases in each slip casting hole location
The inclined inclined hole of plinth subjacent is respectively as follows: hole depth 8.0m, inclination angle 30o, shallow layer grouting of the azimuth perpendicular to ball mill periphery
Hole；Hole depth 28m, inclination angle 10o, azimuth guarantee middle part under Ball Mill Foundation perpendicular to the deep layer injected hole on ball mill periphery
The slip casting effect of position；4, important equipment basis drilling construction technical requirements: (1) drilling construction generally requires: drilling and deviational survey: adopting
With small-bore geology slewing drilling machine, diamond bit drilling uses two-point method earth anchorage, with bevel protractor and circumferentor before aperture
Drilling machine vertical shaft is corrected, drillhole inclination survey selects I type inclinometer of KXP-, and general every 10 m is surveyed 1 time；Bore flushing and simple pressure water: it adopts
It is pulsed and is rinsed with high pressure water, washing time is no less than 30 min, 10 min of Hui Qingshui, simple packer permeability test is carried out before grouting,
Press 1.0 Mpa of water pressure；Boring aperture is φ 90mm- φ 150mm, and aperture need to complement one another with slip casting embolism；The hole location of drilling,
Depth, aperture, drilling sequences etc. should execute as required, and the deviation of hole location and design hole location is not greater than 30cm；(2) shallow-layer bores
Hole construction requirement: shallow layer drilling refers to the drilling for being mainly used for the hole depth of single liquid ihrigising in 0-8m, shallow layer drilling should once at
Hole；(3) deep layer hole construction requirement: deep layer drill refers to that hole depth reaches design drilling depth, main nearly deep layer filling consolidation slip casting
Drilling should first creep into 6.0m when deep layer drill is constructed, tripping in φ 110mm or so casing, and casing and hole wall gap are carried out
After Seal treatment, casing and the closing of hole wall gap reach intensity requirement, deep well drilling is carried out, until design hole depth；Injected hole exists
After drilling, Ying Jinhang bore flushing, bottom hole deposition thickness must not exceed the 2.0% of design hole depth；5, important equipment basis is same
Hole location difference bored grouting sequence, it is equal in determining each hole location in important equipment basal perimeter slip casting according to field condition
The construction for carrying out 5 injected holes determines important equipment foundation slip casting strengthening construction sequence by field test research are as follows: 1. into
The filling consolidation slip casting of row backfill；2. shallow-layer straight hole list liquid ihrigising slip casting；3. the filling consolidation slip casting of shallow-layer straight hole；4. shallow-layer is oblique
Hole list liquid ihrigising slip casting；5. the filling consolidation slip casting of shallow-layer inclined hole；6. the filling consolidation slip casting of deep layer straight hole；7. deep layer inclined hole fills
Consolidate slip casting；6, using being segmented pure pressure type grouting process: (1) grouting pressure MPa: shallow bore hole list liquid ihrigising slip casting pressure from top to bottom
Power 0.3, shallow bore hole filling consolidation grouting pressure 0.5, deep hole filling consolidation grouting pressure 1.0, ground backfill consolidate grouting pressure
0.1, shallow bore hole inclined hole filling consolidation grouting pressure 0.5, deep hole inclined hole filling consolidation grouting pressure 1.0；(2) slip casting section length,
Additional settlement caused by reduce because of slip casting is divided into 2 sections by shallow-layer and deep layer to slip casting section length, carries out the pure pressure injection of segmented
Slurry, it is specific to be segmented are as follows: 1. general place is 6m and two sections of 6-25m；2. important equipment basis straight hole is 8m and two sections of 8-28m；③
Important equipment basis inclined hole is 9m and two sections of 9-28m；(3) flow rate of grouting: provide as follows to flow rate of grouting: single liquid ihrigising is pressed
40-60L/min control；Filling consolidation hair is controlled by 70-100L/min；(4) grouting mode: compared by test, grouting and reinforcing
By dividing sequence to encrypt principle, using the comprehensive grouting for being segmented pure pressure type slip casting from top to bottom and being combined with the pure pressure type slip casting of orifice closing
Method, grouting mode are " shallow layer foundation waterglass-sodium chloride list liquid silication "+" consolidation slip casting and deep foundation base cement-sodium silicate list
Liquid filling consolidation, compacting grouting "；(5) grouting process process: slip casting prepares, 0-2.5m of drilling, backfill fill consolidation process,
0-8.0m of drilling, it single liquid ihrigising slip casting, cleaning bottom of hole, the slip casting of filling consolidation, 0-9.0m of rat holing, single liquid ihrigising slip casting, sweeps
Hole, the slip casting of filling consolidation, 0-6.0m of drill straight hole, lower opening pipe, 6-28m of drill straight hole, filling consolidation slip casting, sealing of hole.
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| CN201811508269.5A CN109653190A (en) | 2018-12-11 | 2018-12-11 | A kind of large-scale heavy duty Equipment Foundations grouting and consolidation on foundation technique |
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| CN201811508269.5A CN109653190A (en) | 2018-12-11 | 2018-12-11 | A kind of large-scale heavy duty Equipment Foundations grouting and consolidation on foundation technique |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111501424A (en) * | 2020-05-08 | 2020-08-07 | 中铁二院工程集团有限责任公司 | Comprehensive treatment method for subgrade karst collapse |
| CN112228081A (en) * | 2020-10-24 | 2021-01-15 | 中铁一局集团有限公司 | Method for reinforcing pile foundation of shield tunnel side-through high-speed rail viaduct |
| CN113502800A (en) * | 2021-07-20 | 2021-10-15 | 河北地质大学 | Construction treatment method for reinforcing deep peat soil foundation |
| CN113803086A (en) * | 2021-09-07 | 2021-12-17 | 山西晋煤集团技术研究院有限责任公司 | Segmented layered circulating grouting construction method for soft coal seam multiplexing roadway |
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| CN112228081A (en) * | 2020-10-24 | 2021-01-15 | 中铁一局集团有限公司 | Method for reinforcing pile foundation of shield tunnel side-through high-speed rail viaduct |
| CN113502800A (en) * | 2021-07-20 | 2021-10-15 | 河北地质大学 | Construction treatment method for reinforcing deep peat soil foundation |
| CN113803086A (en) * | 2021-09-07 | 2021-12-17 | 山西晋煤集团技术研究院有限责任公司 | Segmented layered circulating grouting construction method for soft coal seam multiplexing roadway |
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Application publication date: 20190419 |
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