Cutter Soil Mixing Multi-Axis Soil Mixing Deep Soil . - Malcolm Drilling

1y ago
16 Views
2 Downloads
3.68 MB
9 Pages
Last View : 2d ago
Last Download : 2m ago
Upload by : Kamden Hassan
Transcription

Ground ImprovementCutter Soil MixingMulti-Axis Soil MixingDeep Soil MixingJet GroutingVibro SystemsSpecializedGeotechnical Groutingwww.malcolmdrilling.com

Cutter Soil MixingMulti-Axis Soil MixingDeep Soil MixingJet GroutingVibro SystemsSpecializedGeotechnical GroutingGround ImprovementGround improvement techniques complement and at timesreplace conventional methods when constructing foundationelements or shoring systems. Malcolm offers a full array ofground improvement techniques to modify and enhance theexisting ground in situ through densification, solidification,reinforcement and drainage.SELECTION OF GROUND IMPROVEMENTMalcolm works closely with engineers, contractors,architects and owners to select and optimize the rightground improvement technique. Whether the challengeis liquefaction, lateral spreading, slope stability, staticsettlement, bearing capacity, support of excavation,tunneling through soft ground, or environmentalremediation, Malcolm has the right groundimprovement solution for each situation.MALCOLM DRILLING COMPANYMalcolm Drilling Company was founded in 1962 byJohn Malcolm. Since then, the company has expandedthroughout the United States with a network of fullservice district offices and shops that are able toservice your construction project locally, effectively,and on schedule. As an independent, family-ownedbusiness, Malcolm is able to reinvest its capital inspecialty equipment, allowing us to stay at the forefrontof the industry and giving us the ability to offer a widerange of techniques for your project. Wherever yoursite is, and no matter how difficult the challenges are,Malcolm will provide you with the best engineeredground improvement solution for your project, at acompetitive price.Multi-Axis Soil Mixing,San Francisco, CA

Cutter Soil Mixing (CSM)Cutter Soil Mixing (CSM) was developed from diaphragmwall technology and utilizes two sets of counter rotating,vertically mounted cutter wheels. The wheels cut thesurrounding soil while at the same time blending theinjected cement slurry with the in situ soil to form soilcement panels, 1.7 to 5 feet in width.There are several unique aspects of CSM technology.Most importantly, the CSM system allows for control ofthe speed and rotational direction of the cutter wheels,with each wheel controlled independently. Instrumentation housed directly inside the cutter head relays the x,y and z coordinates of the mixing tool in real time to acomputer display inside the operator’s cab. This providesreal time knowledge and assurance of complete overlapbetween panels to depths of over 130 feet.Because the hydraulic motor is housed inside the cutterwheels, energy is applied directly at the point of attackand not at the top of the Kelly bar. The wheels can beequipped with rock teeth to allow cutting through difficultsoils, including small cobbles, and enables embedmentof the panels into bedrock.The CSM tool cuts vertical rectangular panels making thissystem ideally suited for constructing long soil mix structures such as retaining walls, permeability barriers, andliquefaction mitigation cells. This tool architecture alsoallows for placement of reinforcing beams at any pointalong the length of the panel, optimizing the structuraldesign of the wall.Benefits of Cutter Soil Mixing Two, vertically mounted, counter rotatingheads cut and mix through difficult soils,including stiff plastic clays, gravels andsome cobbles Builds rectangular panels, making itideally suited for constructing walls Instrumentation inside the cuttinghead monitors the x, y and z coordinatesof the tool in real time Cutting and mixing energy generatedat the point of attack Ability to key into the underlying bedrockCUTTER SOIL MIXING TECHNOLOGYGrout/Fluidifying AgentPenetrationPPPrimary PanelCutter Soil Mixing,Alaskan Way Viaduct Replacement, Seattle, WAPSSPPSecondary PanelBeam Placement(If necessary)

Multi-Axis Soil Mixing (CDSM)Multi-Axis Soil Mixing, sometimes referred to as CementDeep Soil Mixing (CDSM), was originally developed in Japan in the late 1970’s. The system makes use of multiple(typically three) vertical rods fitted with several sets ofoverlapping flights or mixing paddles. The rods are counter-rotating, which creates shearing action between themixing flights. Grout is pumped through the hollowcenters of the rods through ports at either the tip or thesides of the tool. The rods are driven by an electric rotarymounted on a large tracked carrier.Each of the augers or mixing paddles is approximately 3feet in diameter, with the rods approximately 2 feet apart.This creates a series of interlocking columns that are also3 feet in diameter at 2 feet on center. Typically these setsof columns, usually referred to as panels, are placed endto end to create a continuous wall. The multi-axis systemcan also be used to form rectangular cells for mitigationof liquefaction and lateral spreading or spaced apart toform barrettes. Unconfined compressive strength andpermeability are a function of grout mix and in situ soil.The Multi-Axis Soil Mixing system achieves high rates ofproduction, is able to construct soil mix columns to depthof 120 feet, and its geometry is well suited for the construction of shoring walls or underground buttresses. TheMulti-Axis Soil Mixing system is ideal for treating loosegranular soils and soft to medium silts and clays. It canbe used in some dense sands and stiff fine grained soils.Benefits of Multi-Axis Soil Mixing Three (or more) counter-rotating rods withoverlapping paddles shear the soil betweenadjacent paddles, effectively mixing the soilwith the binding agent Fast, efficient installation of soil mixed panelsto form low permeability cutoff walls Continuous panels can be used to formliquefaction confinement cells and lateralspreading buttressesCDSM TECHNOLOGYPrimary/SecondaryInstallation SequenceBeams every othercolumn, typical1Multi-Axis Soil Mixing,San Francisco, CA32ABOVE: CDSM Wall, San Francisco, CA

Deep Soil Mixing (DSM)Single Axis Soil MixingJet MixingOur Single Axis Soil Mixing, typically referred to in theindustry as Deep Soil Mixing (DSM), utilizes mechanicalmixing tools to shear the soil in situ and mix it with acementitious slurry pumped at low pressure. This methodhas the ability to create large soil mix columns, typically2.5 to 9 feet in diameter, to depths of up to approximately80 feet.Deep Soil Mixing is a very economical system for massground improvement projects. DSM is used to providesettlement control and increased bearing capacity in softsoils. The ability to create large diameter soil mix columnsalso makes it well suited to mitigate the effects of liquefaction induced settlements and lateral spreading.DSM is also the soil mixing method of choice for in situremediation and encapsulation of contaminated soils andfor the construction of Permeable Reactive Barrier (PRB)walls.Jet MixingA variation of our DSM technology is Jet Mixing. It is aunique soil mixing system developed by Malcolm thatcombines mechanical paddle mixing with high pressurehydraulic energy to shear and blend the soil in situ, creating a soil cement mix of the highest quality. Our high energy jet mixing system has allowed us to extend soil mixing to stiff, highly plastic clays and weathered rock, soilsSOIL MIXING TECHNOLOGY — SINGLE AXIS9-ft Diameter Single Axis Soil Mixing,Brickell Center, Miami, FLnot normally treated by soil mixing methods. Jet Mixing isfast and the system of choice to construct cylindrical soilcement elements, 2.5 to 3.5 feet in diameter, to depthsof up to approximately 65 feet. It is also used to constructsoil cement piers to control settlement and increasebearing capacity. It is highly efficient for constructingtangent and secant pile walls, which can be reinforcedwith wide flange beams (soldier piles) and tiebacks, asrequired. Because it produces a high quality soil cementmaterial, Jet Mixing can provide permeabilities of 1 x 10-6cm/sec or less for cutoff walls and groundwater barriers.Benefits of Deep Soil Mixing Efficient and cost effective methodto mix large volumes of soil Creates large ground improvementcolumns, typically from 2.5 to 9 feet indiameter, that can be used for increasingbearing capacity and controlling static andseismic-induced settlements Jet mixing uses high pressure combined withmechanical mixing to construct high qualitysoil cement columns that can be used asindividual elements or as overlapping secantsoil mix piles for shoring applications

Jet GroutingMEGA Jet GroutingJet grouting is a highly specialized technique used tocreate an in situ mass of improved soil also called soilcement. A drill rig advances a relatively small diameter(4 to 8 inches) jet grout tool to the bottom of theproposed treatment zone and horizontally injects fluidgrout at high velocity. The drill tool is withdrawn androtated at a constant rate as the grout erodes and mixesthe surrounding soil to create a soil-cement column fromthe bottom elevation upwards.Jet grouting techniques can be classified as either singlesystem (utilizing grout only), double system (grout and air)or triple system (grout, water, and air). Each system hasunique advantages and selection of the jet grouting system is dependent upon project specific criteria. Malcolm’sproprietary MEGA-Jet grouting technique is a modifieddouble fluid system that is capable of generating columnsup to 18 feet in diameter. This modified double fluid system utilizes a specialized multi-chambered drill rod systemto convey slurry grout and air to the jetting tool. A highvelocity coaxial stream of slurry grout is shrouded withina sheath of high pressure air to mix and erode the in situsoils. The highly sophisticated MEGA-Jet monitor utilizesa unique array of nozzles specifically designed to focusthe injection media at a given radius in balance with thechosen flow rate, line pressure, and fluid specific gravity.The constant variables inherent to geotechnical construction do not allow analytical determinations alone whenconsidering jet grouting. Full scale field tests or testsections in some form are a requirement for jet groutingworks to verify assumed construction parameters andperformance.BELOW: Mega Jet Grouting, Ruskin Dam, British Columbia, CanadaMega Jet Grouting, U230 Transit,Seattle, WAQuality assurance and control are an ongoing effort andthe responsibility of the field technician. All checking ofpermanent materials received, field grout testing andrecord keeping is monitored and recorded. The agreedupon drilling, grouting and injection procedures aredeveloped during the test section and then used inproduction columns.A state-of-the-art automatic data acquisition systemprovides a real time record of all relevant constructionparameters for each column installed, including depth,volume injected, operating pressures and columndiameters.Benefits of Jet Grouting Effective within a wide range of soil types Ability to drill through overburden soils andfocus jetting energy discretely within thetargeted improvement area Ability to construct both large diametercolumns for mass stabilization and smalldiameter columns for underpinning Can be installed at inclinations to overcomeobstructions or access constraints High strength, low permeability subsurfaceelements in specifically targeted areasJET GROUTING TECHNOLOGY

Vibro SystemsVIBROCOMPACTIONVIBROREPLACEMENTSTONE COLUMNSAGGREGATE PIERSVibro Systems were first developed in Germany in the1930’s and make use of powerful depth vibrators todensify and reinforce soils in situ. The vibrators have anelectric motor inside of them; and, unlike other installation systems that use a vibratory or impact hammerto drive a pipe, the energy and vibrations are applieddirectly in the hole, leading to very high rates of soil compaction even at wide spacings. Depending on soil typesand the actual application, Vibro Systems can be referredto as Vibrocompaction, Vibroreplacement, stone columnsor aggregate piers.Vibrocompaction is used to densify loose sands andgravels by inserting the poker type vibrator into theground with the aid of jetting water. A high degree ofcompaction is achieved through vibration and displacement of the soil. Sand may be added from the surface tomaintain site elevation.Vibroreplacement makes use of the same vibrator, butcrushed rock or gravel is used to backfill the hole to forma Stone Column or Aggregate Pier. In this application the stone columns are installed using a dry, bottomfeed system, where the crushed rock is fed to the tip ofthe vibrator using an internal feed pipe and compressedair. Excellent densification of granular soils is achieved,while at the same time constructing a stone column (aggregate pier) that provides reinforcement and settlementVIBROREPLACEMENT TECHNOLOGYInitial penetrationaided by in-holevibration, compressedair or water.Stone Columns2.5 to 3-ft indiameter typical.Vibroreplacement Stone Columns,Layton, UTreduction. Vibroreplacement stone columns are an idealtechnique for mitigation of liquefaction because the system provides densification of liquefiable soils, reinforcement, and drainage.Vibroreplacement stone columns are also used on claysand silts to increase bearing capacity and reduce staticsettlement. The system can also be applied in very softclays with high loads by injecting cement grout with thecrushed rock to form Cemented Stone Columns.Benefits of Vibro Systems Higher densification levels are achievedin granular soils relative to systems that useimpact or vibratory hammers Utilizes clean, crushed rock with a highangle of internal friction, resulting in highcapacity aggregate piers Fast, economical system for massground improvement Can be installed near existing structures Progression of systems from Vibrocompactionto Vibroreplacement Stone Columns toCemented Stone ColumnsBELOW: Vibrocompaction, Port of Newport, OR

SpecializedGeotechnical GroutingMalcolm provides other ground improvement servicesincluding Dynamic Deep Compaction, Rigid Inclusions,Dewatering and Specialized Geotechnical Grouting.These grouting techniques include compaction,permeation and compensation grouting.Compaction Grouting Requires injecting a thick, lowslump, mortar-like sanded grout into the subsurface todensify loose soils. This grout is injected at relatively highpressure through the tip of a steel casing which has beendriven or drilled to the desired treatment depth. Thegrout is injected sequentially from the bottom of thetreatment zone as the casing is extracted, forming bulbsof grout which push radially outward on the surroundingsoils, closing pore spaces and densifying the subsurface. The thick grout does not penetrate the pore spacesbetween soil grains, but forces the pore spaces closerresulting in a denser soil mass.This increases bearingcapacity, lowers settlement potential, and reducessusceptibility to liquefaction. Compaction grouting is anefficient technique for retrofitting or re-leveling existingstructures which were originally built on loose ground.Permeation Grouting Uses fluid, high-mobility cementitious grout to penetrate and fill void spaces in granularsoils and fractured rock. The technique works by fillingvoid spaces with grout thereby increasing the strengthof subsurface soil/rock and cutting off groundwater flowpaths. Permeation grout is injected into the subsurfacethrough drilled holes and often utilizes packers andspecially fabricated injection pipes (known as sleeve portgrout pipes or tube-a-manchettes), which allow groutBELOW: Fully computerized grout plant, San Francisco, CAApplications for specializedgeotechnical grouting Mitigate seismic risks such asliquefaction, seismic settlement,and lateral spreading Cut-off groundwater flows underneathor around dams or similar structures Create water tight blocks for newexcavations and tunnels Seal leaks from within existingtunnels and excavationsplacement to be precisely controlled and isolated atspecific depths along the drill hole. Permeation groutingprograms can utilize a wide variety of materials rangingfrom simple neat grout composed of Portland cementand water to complex chemical grouts with set timesthat can be controlled from less than a minute to severalhours. The variety of mix designs and resulting groutproperties that can be achieved make permeation grouting a versatile ground improvement technique with a widerange of applications.Compensation Grouting is a sophisticated groutingtechnique which utilizes pressurized fluid grout to createhydro fractures in the subsurface to lift and level sensitive structures typically above new tunnels or adjacentto excavations. The basic principle of this technique isto carefully control grout injection rates and pressures tolift and level structures at the ground surface to compensate for ground loss due to local tunneling or excavationwork. Drilling to install compensation grout pipes is oftenperformed horizontally from the interior face of a shaftor excavation to provide better control of grout injectionlocations and help ensure uniform lifting of structures.Compensation grouting programs include extensivereal-time settlement monitoring and grout injectionsystems to precisely control lifting rates and protectstructures both at and below ground surface.Compensation grouting is most often utilized for largeprojects in urban environments where tunnels andexcavations are constructed near sensitive structureswhich cannot tolerate settlement.Geotechnical grouting plant and equipmentSeattle, WA

Front cover: Cutter Soil Mixing, Alaskan Way Viaduct Replacement, Seattle, WABack cover: Cemented Vibroreplacement Stone Columns,San Luis WTP, Los Baños, CAMalcolm Drilling Company was foundedin 1962 in San Francisco, California,which remains our headquarters today.Malcolm operates throughout the UnitedStates, maintaining a network of regionaloffices to serve our clients across thecountry. To learn more about our expertiseand for a complete list of locations, visit:www.malcolmdrilling.com

hydraulic energy to shear and blend the soil in situ, creat-ing a soil cement mix of the highest quality. Our high en-ergy jet mixing system has allowed us to extend soil mix-ing to stiff, highly plastic clays and weathered rock, soils SOIL MIXING TECHNOLOGY — SINGLE AXIS Benefits of Deep Soil Mixing Efficient and cost effective method

Related Documents:

Axis Communications AXIS 215 PTZ-E Axis Communications AXIS 216FD Axis Communications AXIS 216FD-V Axis Communications AXIS 216MFD Axis Communications AXIS 216MFD-V Axis Communications AXIS 221 Axis Communications AXIS 223M Axis Communications AXIS 225FD Axi

AXIS 213 PTZ, AXIS 214 PTZ, AXIS 215 PTZ, AXIS 221, AXIS 223M, AXIS 225FD, AXIS 232D and AXIS 233D Network Cameras. AXIS T90A01 850nm 50 Deg PoE AXIS T90A20 850nm 120-180 Deg AXIS T90A21 850nm 50-100 Deg AXIS T90A33 850nm 10-20 Deg AXIS T90A4

mechanical mixing (rotating, vibrating) hydraulic mixing pneumatic mixing pipeline mixing (turbulent flow, static mixer) Method of mixing fluids A –mechanical mixing using turbines B –mechanical mixing using blade impellers C –hydraulic mixing D –pneumatic mixing with stationary inputs

Soil mixing equipment Installation procedure QC/QA Engineering properties of soil-cement Applications. Deep Soil Mixing Deep Soil Mixing is the in situ mechanical mixing of a cement grout with soil to produce an a variety of engineered geometries and soil properties to suit the ap

Axis 215 PTZ Axis 215ptz Axis 216 FD . Перелік підтримуваних IP-камер Додаток до Посібника користувача послугою Cloud Video 2 Axis 216 MFD Axis 221 Axis 223M Axis 225FD Axis 232D Axis 233D Axis 240 Axis

Tool Nose Radius Compensation Spindle Synchronization C-Axis Control (Main) C-Axis Control (Back) Canned Cycles for Drilling User Macro Milling Interpolation . Tool spindle speed Machining capacities Max. drilling dia. Tap Rapid Feed rate X1 axis Z1 axis Y1 axis X2 axis Z2 axis Y2 axis X3 axis Z3 axis Slide stroke X1 axis

Axis business intelligence applications is a collective name used in this document for the applications AXIS People Counter; AXIS P8815-2 3D People Counter; AXIS Queue Monitor; and AXIS Store Data Manager. AXIS Store Reporter is a cloud service that visualizes the data from Axis business intelligence applications. An overview from a

www.2id.korea.army.mil 2 Indianhead August 13, 2010 “Jeju Island, it takes about a half day to travel, so on a long weekend you can spend three full days touring, exploring, and enjoying yourself.” Pfc. Reginald Garnett HHC, 1-72th Armor OpiniOn “Gangneung is a great place to visit. It has a beautiful beach, Gyeongpo Beach, where many .