Operator's Manual

drillinguidor“mud”,throughthedrillpipeand
outthedrillbit.Thedrillinguidlubricatesthe
bit,helpstoholdtheboreopenwhiledrilling,
andmixeswiththespoils,ushingthemoutof
theborethroughtheentrypoint.
RefertoPreparingtheJobSiteandthe
Machine(page47)forinstructionsonpreparing
thejobsiteandthemachine.
4.Drillthebore.
Youdrilltheborein3stages:
A.Entry
Intheentryphaseofthebore,youpushthe
drillbitandheadintothegroundatanangle
ofupto16degrees.Afterpushinginone
ormorepipes,youbegindrillingdownand
forwarduntilyoureachthedesireddepthor
depth-gaugehole(ifused).
B.HorizontalReach
Afterreachingthedesireddepth,you
pushthebitforward,steeringthebittoa
horizontaldepth.Thedrillbitemitsaradio
signalfromthesondehousing,whichallows
acrewmemberonthesurfacetotrackthe
locationanddepthoftheheadusingthe
sondereceiverasyoudrillandsteeritalong
aplannedroute.
C.Exit
Onceyouhaveattainedtheplanned
horizontalreach,yousteertheheadupat
ananglesimilartoyourentryanglebringing
thebitintotheexitholeortrench.
RefertoDrillingtheBore(page60).
5.Backreamtheboreandpullbackcablingor
pipe.
Afterenteringtheexithole,theendcrew
detachesthedrillbitandsondehousingfrom
thedrillpipe.Initsplace,theyattachareaming
bitandtheendofthecableorpipetobepulled
throughthebore.Thereamingbitisdesignedto
enlargetheboreasyoupullitback.Asbefore,
youpumpdrillinguidthroughthepipetothe
reamingbitasyoupullthecableorpipeback
throughtheboretolubricatethereamerand
allowthecableorpipetoslideeasilythrough
thebore.Youcontinuepullingthepipeback
untilthereamerreachesthedepth-gaugehole
orexitsattheentrypoint.Thereyouremovethe
reamerandproductfromthedrillpipe,pulling
thepipetherestofthewaybacktothemachine.
RefertoBackreamingandPullback(page64)
forinstructionsonbackreamingandpulling
cableorpipe.
6.Finishtheboreandleavethejobsite.
Aftercompletingtheoperation,youneedto
disconnectandcleanthemachineandloaditon
thetrailer;refertoFinishingtheJob(page66).
GatheringSiteInformation
PlanningtheInitialRoute
Beforeyoucanbeginboring,youneedtoplanthe
routethatyouwillboreandprepareasfollows:
•Createabasicplanforthebore,mappingoutthe
proposedroute.
–Noteanyobstacleswhichmayaffectthebore,
suchaslargetrees,bodiesofwater,buildings,
etc.
–Plantherouteoftheboretoavoidasmany
obstaclesaspossible.
–Determinethedepthofanybodiesofwaterto
becrossedtoensurethatyoucangetdeep
enoughunderthem.
•Determinethedepththatyouneedtoinstallthe
materialatandtheminimumbendradiusbothof
thedrillpipeandofthematerialbeinginstalled.
Thiswillseriouslyaffecthowlongtheboreneeds
tobeandatwhatanglethatyoucanbeginand
end;refertoPlanningtheBorePath(page42).
•Havetheareaoftheboremarkedforutilitylines(in
theUScall811).Ensurethatalllinesaremarked
onyourblueprints/boreplanaswell.
•Contactthelocalauthoritiestoarrangeforany
permitsandtrafccontrolthatyouwillneedto
conductthejob.
InspectingtheProposedJobSite
Physicallyinspectthesiteasfollows:
•Notetheterrain,slopes,valleys,hills,andany
featuresnotplannedforpreviously.
Determinethedegreeofslopeatboththe
proposedentrypointandexitpoint.
•Determinewhatthesoiltypesareintheareaand,
ifpossible,atthedepththatyouwillbeboring.
Youmayneedtodigtestholesatintervalsalong
theborepathtofullydeterminethis.
•Walktheareaofthebore,lookingforanypossible
unmarkedobstructions.Lookformanholes,
pedestals,oldfoundations,etc.
•Identifyallthehazardsthatyouwillpasswithin
3m(10ft).
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