The specific embodiment of the present embodiment is as follows:
As shown in Figs 1-4, a kind of slope reinforcement device provided in this embodiment includes the steel floral tube 8 being inserted into side slope and position
Concrete lattice beam 9 in 8 lower section of steel floral tube, steel floral tube 8 are arranged on the slope of side slope, and concrete lattice beam 9 is arranged on side
The bottom of slope on slope is slided for preventing slope surface from loosening to dissipate.
Spray of molten steel tube head 4 is sharp cone distal structure, is provided with multiple slurry outlets 2 on spray of molten steel tube wall 1.
Concrete lattice beam 9 is the lattice girder frame for being covered and being wrapped up by concrete layer.
Preferably, the diameter dimension of the caliber of steel floral tube 8 is 50mm.
Preferably, the axial spacing of each injected hole 3 is 500mm.
Specifically, injected hole 3 is arranged in the height and position below of steel floral tube 2/8ths three.
Specifically, the height of concrete lattice beam 9 is concordant with the nozzle position of immediate steel floral tube 8.
Method particularly includes:
It is inserted into steel floral tube 8 and lattice girder, and the slip casting into steel floral tube 8 in side slope, it is specific to walk to lattice girder casting concrete
It is rapid as follows:
Step 1, smooth location clear up barrier, carry out corresponding safeguard measure to need scene to be protected.
Step 2, measuring hole location, designs spacing as required, using instrument and manually combines measuring hole location, first uses whole station
Instrument, which is put, sets floral tube grouting axis, then by artificial measuring tape measuring.
Step 3 sets up operating platform, carries out security protection.
Step 4, drill down tube, is squeezed using impact rotating and is drilled with tube method, and vertically squeezes into steel floral tube 8 to drilling position,
Injected hole 3 and slurry outlet 2 are provided on steel floral tube 8.
Step 5, cement mortar sealing, is sealed after carrying out slip casting at least twice.
Cement-sodium silicate double liquid is injected when first time slip casting；Preferably, the body of ratio of mud 1:1, cement slurry and waterglass
Product is than being 1:0.6, grouting pressure: 0.4Mpa；Second of slip casting is carried out after first time injection slurry initial set, and when second of slip casting will
Grouting pressure is increased to 0.5Mpa, until injected hole 3 does not absorb slurries, and carries out the pressure stabilizing of 5mi n time.
Above grouting pressure and grouting amount does different adjustment according to different geological conditions.
Step 6 carries out the construction of concrete lattice frame, that is, rolls base's soil, places template and binds the reinforcing bar of lattice girder
Cage using concreting lattice girder, and conserves.
Specifically, position of opening and design hole site error are less than 10cm in step 2.
Specifically, needing to set up mud jacking platform before step 5 carries out slip casting, using three steel pipes, it is flat to set up taper mud jacking
Specifically, the cement-sodium silicate double liquid in step 5 is cementitious material, use pressure by glue by grouting equipment
Gel material injects steel floral tube 8, then passes through slurry outlet 2, penetrates into the gap of soil particle in stratum, the interface of soil layer or rock stratum
Crack in, make its diffusion, gelling or solidification.
Specifically, grouting amount control in 1 cubic metre of every pipe, if discovery grouting pressure is smaller, continues slip casting, specific scene can
The case where with according to aperture grout, controls grouting amount.
Before Specific construction, following preparation of construction is done:
One, technique preparation
(1) construction drawing, specification and related specifications that organizing construction personnel learn, are familiar with this project, are familiar with quality
It is required that.
(2) each anchor hole is numbered one by one, checks coordinate and relevant design parameter.
(3) arrangement and method for construction is worked out, quality, schedule and every safeguard measure are formulated.
(4) it is carried out to construction personnel and confides a technological secret, tells somebody what one's real intentions are safely.
(5) cement and outer-penetrating agent quality are checked before marching into the arena, and are familiar with and check mechanical, equipment technical performance.
Two, operating condition
(1) drawing is checked before going into operation, according to anchor hole number to reconnaissance trip, investigation.
(2) smooth location clears up barrier, carries out corresponding safeguard measure to need scene to be protected.
(3) operating platform is set up, security protection is carried out.
Three, construction technical data
(1) volume ratio of cement-sodium silicate double liquid, ratio of mud 1:1, cement slurry and waterglass is 1:0.5~0.8.
(2) grouting pressure: 0.3Mpa -0.5Mpa.
(3) slip casting dilation angle is according to the porosity of slope soil, i.e., according to soil body different porosities grouting pressure and slurry
Liquid dilation angle relation table determines that this table belongs to well-known technique in industry, can look into the relevant technologies handbook and obtain.
(4) grouting amount control is in 1 cubic metre of every pipe, if discovery grouting pressure is smaller, should continue slip casting, and specific scene can be with
Aperture grout controls grouting amount.
(5) after slip casting is completed 7 days, local excavation's slip casting region checks slip casting effect.
Four, measuring hole location, specifically:
By design requirement spacing, measuring hole location using instrument and manually is combined, is first put with total station and is set floral tube and be in the milk axis
Line, then by artificial measuring tape measuring, it is ensured that position of opening and design hole site error are less than 10cm.
Five, drill down tube, specifically:
1) processing of steel floral tube 8
Steel floral tube 8 using 50 wall thickness 3.5mm steel pipe of φ make, length L, from nozzle 2.5m to from tube bottom 1m range
Interior (i.e. cloth hole range is L-3.5), arranges quincunx injected hole 3, and 3 axial spacing of injected hole is 500mm, 45 ° of radial rotary brills
Hole, diameter 6-8mm.Weld cone head in bottom.
2) it drills
It is squeezed using impact rotating and is drilled with tube method, bore diameter 65-75mm, drilling depth should be greater than 6m.Bore operation
When, the revolution of drilling rod 10 pushes the cutting of drill bit 15 to squeeze Rock And Soil drilling.Meanwhile air hammer 12 impacts shoe 13 to drive
Casing 11 promotes, and protection tube wall 1 prevents collapse hole.After every casing joint 11 promotes, with the included another section of threaded connection of pipe end
Casing 11 continues to creep into.After drilling depth reaches design requirement, stop creeping into and extracting drilling rod 10 and drill bit 15, casing 11 and pipe
Boots 13 temporarily stay in hole, and steel floral tube 8 is then inserted into the drilling cavity 16 of casing 11.It is finally extracted and is covered with tube drawing apparatus
Pipe 11 and shoe 13.Hole scattering size should not exceed the 1% of total length, be controlled by orientating device 14.If in pilot hole mistake
Big stone is encountered in journey causes the pilot hole of the hole location difficult, and adjustment hole location appropriate should be contacted with design, determining in design
Hole location, which adjusts, carries out setting-out and pilot hole again in allowed band.
3) steel floral tube 8 is squeezed into
The floral tube to complete is manually vertically squeezed into pilot hole hole, encountering card pipe situation can hammer at the top of floral tube,
Rotate floral tube simultaneously, it is ensured that its injury-free deformation and bottom hole can be sunk to.If there is deformation replacement floral tube in time, squeeze into again.
With the high-pressure slip-casting pipe (compression strength 10M Pa or more) of threaded mouth.After floral tube is squeezed into, steel floral tube 8 and note
The connection for starching head is connected using threaded nut.
Six, slip casting
1) it sets up mud jacking platform: using three steel pipes, setting up taper mud jacking platform.
2) 8 outside gap of steel floral tube is blocked with waterglass cement mortar, then is inserted into the spray of molten steel with the hole flushing water pipe with spray head
8 bottom of pipe is rinsed side with high pressure waterside and is above mentioned, the sediment stayed in floral tube rinsed, to dredge slurry outlet 2.
3) 1 cubic metre of the every hole of the specified grouting amount of first time slip casting, grouting pressure 0.3MPa.During slip casting, use
Grouting pressure and grouting amount dual control.If grouting amount reaches, and pressure is not up to, and should be stopped slip casting 5mi n and (specifically be regarded cement-
The parameter of waterglass in waterglass dual slurry), prevent slurries to be lost along ground crack.After injection slurry initial set, continue second
Grouting pressure is increased to 0.5Mpa by secondary slip casting, until injected hole 3 does not absorb slurries, and pressure stabilizing 5mi n.
4) it under steady and sustained pressure, is not destroyed with the grouting port soil body as principle, controlled grouting amount.
5) sealing of hole: after the grouting works of grout hole, drilling internal water accumulation and dirt is excluded, is blocked complete opening using underflow
Closely knit and floating.
Seven, concrete lattice frame is constructed
1) base's soil is manually rolled.
2) it according to design, places template and binds the steel reinforcement cage of lattice girder.
3) C20 concreting lattice girder is used, and is conserved.
Eight, material and equipment
Material is as follows: cement uses P.O42.5 portland cement, its kind, rank, packaging or storehouse in bulk are coped with when marching into the arena
Number, date of production etc. checked, and should be reviewed to its intensity, stability and other necessary performance indicators, quality
Have to comply with existing national standards.
Steel floral tube 8 is seamless steel pipe, and carries out corrosion protection.It must not be using the steel pipe to get rusty.
Reinforcing bar is HRB400 reinforcing bar, and the concrete grade of lattice is C20.
Drain dyke uses M10 mortar flag stone.
Mechanical equipment such as table 1:
1. mechanical equipment list of table
||Specifications and models
|Down-hole percussion drill machine
|Air compressor machine
||40m/min internal combustion air compressor
|Slip casting machine
||ZBM150 piston type
||Forced action type
|Electric oil pump
|Electric welding machine
||Su Guang RTS112R5L
Establish Quality Control Principles:
1) perfect quality management system and quality certification system are established.Quality engineer exercises quality right of veto by one vote,
Project manager, chief engineer are solely responsible for quality work.
2) quality responsibility system is strictly carried out.Project manager, chief engineer, technical staff at different levels and work team responsible person are carried out to engineering
The negative corresponding responsibility of quality, layer by layer sign the lifelong liability statement of quality, accomplish duty fulfillment in place, duty fulfillment to people, to improve
The quality mind of crew.Standard construction is taken appointment with certificate.
3) technology in Construction control guarantees.Before construction, construction technology responsible person organizational technology personnel and construction management people
Member reads over design document, understands design idea, specifies construction technology emphasis, difficult point, conscientiously confide a technological secret, friendship side
Method, skill of handing over, friendship standard.
According to following technical specification:
1) " Technique Code for Building Slope Engineering " GB50330-2013
2) " rock soil anchor and concrete spraying support engineering legislation " GB50086-2015
3) " Standard for quality control of concrete " GB 50164-2011
4) " construction fastener type steel pipe scaffold technical specification of security " JGJ130-2011
5) " building slope engineering construction quality acceptance specification " DBJ/t50-100-2010
Carry out quality control method:
1) cement marched into the arena must control quality, and the rear that meets the requirements can be carried out use.
2) cement storage more than 3 months or make moist forbid using.
3) length of steel floral tube 8 should meet design requirement.
4) the hole quantity of steel floral tube 8, meets design requirement.
5) during slip casting, the mixing of slurries is carried out in strict accordance with test parameters.
6) soil structures on nozzle top are more loose, are easy to cause the soil body outside nozzle sealing concrete to be burst, Ying Gen
According to the structure size of soil structures adjustment nozzle closed concrete, deepen the depth of sealing as far as possible.
7) construction manager at scene carries out whole other station during slip casting, and remembers to the initial data of slip casting
Record, is subsequently formed construction information.
8) small-scale grouting test is carried out, before comprehensive slip casting to determine grouting amount and slip casting effective range technique ginseng
Number, instructs the full-scale construction of subsequent slip casting.
9) dual control carried out to grouting amount and grouting pressure during slip casting, in practical operation, such as grout, running pulp occur different
It often occurs as stopping mud jacking immediately, after ascertaining the reason, using reduction grouting pressure, changing at the methods such as underflow or intermittent slip casting
Carry out quality inspection measure:
1) data is surveyed to foundation, is simulated using GeoStud i o and calculates sliding force, the skid resistance, stabilization of reinforcing preceding side slope
Then property coefficient uses the preloading with gravity reversal to simulate in riding track or top of the slope, when inverting tentative calculation stability coefficient is 1.3, institute
The load Q needed.That is, skid resistance required for reinforcing is converted into the load on riding track.
2) using 8 grouting and reinforcing of steel floral tube side slope on, choose inverting tentative calculation section part riding track or top of the slope, classification by
Walk preloading width be 2m, the weight (packeted soil or sand) that weight is 2Q, and complete monitoring slope displacement.
3) during loading, if monitoring displacement is without significant change, illustrate safety coefficient > 1.3 after reinforcing.If displacement
Significant change then stops load immediately, and as early as possible after unloading, and connection design and management are negotiated.
Corresponding safety measure is as follows:
Reinforce monitoring works: carrying out tracking and monitoring, advanced prediction during entire engineering control, it is ensured that construction period becomes
Shape area construction personnel, resident's security of the lives and property；Monitoring Result is used for construction period Feedback Design, and guidance adjustment successive projects are applied
Work；For examining control efficiency after completion.Relatively stable, intervisibility location is selected in place, buries monitoring pier, determines monitoring control
Point coordinate system processed is convenient for subsequent monitoring results and long term monitoring.Absolute displacement monitoring point 10 is arranged in place top of the slope, carries out normal
The earth deformation of rule measures, monitoring crack, Rock And Soil horizontal displacement, vertical displacement and rate variation, to reach construction safety prison
Survey the purpose with control efficiency monitoring.
Safety control measures:
1) construction site is closed, and the idler unrelated with construction must not at will enter construction site.
2) after worker marches into the arena, " three-level " safety education is carried out, finished product and semi-finished product must not be damaged, must not be provoked a dispute, infused
Meaning does the relationship with pedestrian, passerby, other unit in charge of construction personnel etc. well, it is ensured that side's safety.
3) in full position, safety signs are hung up, remind construction personnel to take care at any time.
4) all electric appliances, route all must be according to " engineering construction scene is for Electrical Safety specification " (GB50194-
2014) pertinent regulations are laid.Service cable should be arranged along road or building edge, and suitable straight-run, surface away from
Distance from the ground is not preferably less than 0.2~0.7m；When wearing under cable, weak soil or sand should be spread up and down, thickness is not less than 10cm,
And cover block is protected.Low-voltage cable (not including oil compression cable) need to make somebody a mere figurehead laying, and overhead height is not lower than 2m.It joint should be exhausted
Edge is good, and should take waterproof measure.
5) safe practice is carried out to worker before construction to tell somebody what one's real intentions are.When construction, full-time security official's site supervision should be sent, if discovery is deposited
It should stop work to rectify and improve in security risk, can construct after guaranteeing safety immediately.
6) construction equipment, equipment are reasonably selected.Perform maintenance, the maintenance work of equipment equipment.Equipment in good condition, machine
Tool is the basis that construction quality guarantees.
7) close inspection mud jacking equipment, mud jacking pressure gauge, mud jacking pipeline etc. when mud jacking guarantee the smooth of mud jacking construction.
8) pay attention to the coordination and cooperating with other units.
Carry out corresponding environmental protection measure:
Tempering slip casting have many advantages, such as construction is simple, quickly, it is small to environmental perturbation.In work progress, strict implement environmental protection
The requirements and unit in charge of construction's environmental Kuznets Curves system that department formulates.
It carries out noise control: reinforcing the maintenance of mechanical equipment, it is ensured that machinery runs well, and reduces noise；Pass in and out field
The vehicle on ground must not blow a whistle, and not pollute road and environment when live out；Equipment and steel pipe etc. must not be beaten when construction, minimized
Carry out sewage control: production waste will after collection, clarification, oil removing emission treatment, avoid water pollution.
Carry out dust controlling: scene periodically watering reduces fugitive dust environmental pollution；When handling have fugitive dust material, pay attention to light
By putting down gently, must not arbitrarily abandon.
Resource-effective: the engineering method can enhance soil body self stability, and steel floral tube 8 plays anchorage effect simultaneously, more traditional
The construction of anchor pole/rope is compared, and drilling depth is shallow, materials'use is few, mechanical equipment miniaturization, has saved cost, accelerate construct into
Degree, provides work efficiency.
8 slip casting lattice girder construction of steel floral tube is with conspicuous characteristics, applied widely, compared with other protection forms, tool
There are following apparent advantage and economic benefit:
1) side slope landform, the adaptability of geology are preferable.Cement slurry penetrates into Rock And Soil and solidifies, and enhances side slope homeostasis
Property, steel floral tube 8 can play anchorage effect again, form space net rack integrative consolidation system with lattice girder.It is poor particularly with geology, cover
The deeper side slope of soil layer 5 has preferable protective action, and under normal circumstances, soil layer point is by the outer and interior overburden layer 5, strong of being followed successively by
Weathered layer 6 and middle weathered layer 7.
2) excavation of the cubic metre of earth and stone, the especially deeper side slope of overburden layer 5 be can be reduced, anchorage depth can be significantly shortened, saved
About a large amount of manpower, machinery, equipment, and shorten construction period.
3) work surface is small, reduces the destruction to earth's surface resource, and greening vegetation can be used in grid beams.
The engineering method construction period is fast, earthwork evacuation is small, especially in municipal works, can substantially reduce to traffic and resident
Influence, social benefit is obvious.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should
Understand: it is still possible to modify the technical solutions described in the foregoing embodiments, or to some or all of
Technical characteristic is equivalently replaced；And these are modified or replaceed, it does not separate the essence of the corresponding technical solution, and this is practical new
The range of each embodiment technical solution of type.