土木工程专业外文翻译.docx

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1、外文翻译原文DESIGNANDCONSTRUCTIONOFTUNNELS■10.4ThedesignofthesystemformonitoringduringconstructionThedesignofthesystemformonitoringduringconstructionwillbebasedonthetypeandmagnitudeofthedeformationphenomenathatitisexpectedwillhavetobemeasuredtoimplementthemonitoringphase・Giventheimpor

2、tanceofthestabilityoftheface,whenanundergrounddesignengineersetsouttodesignasystemhewilldrawupaplanthatwillaboveallallowthestress-strainresponseofthecore-facetobemonitoredandassessedintermsofitscorresjx)ndencetothepredictionsalreadyformulatedusingthecalculationsperformedduringth

3、ediagnosisandtherapyphases.Asaconsequence:•instablecore-faceconditions(rocktypebehaviour),inwliichthegroundisstressedintheelasticrangeandtliedeformationresponse,atleastinoverallterms,isimmediateandverysmall,itwillnotbenecessarytospecifyveryfrequentsystematicmonitoringnorwillth

4、euseofsophisticatedinstrumentationberequired.Greaterinstrumentationwillonlybenecessaryforparticulargeostructuralsituationstomonitorpossiblelocalinstability"(e.g.rockslideorwedgesofrockbeingexpeDed)or,inveryrigidmaterialaffectedbydiscontinuityplanesandfracturingsubparalleltotheax

5、isofthealignment,topreventrockburst.Asaconsequence,itwillnormallybesufficienttoplacesystematicmeasuringstationsatadistanceofoneevery100nionaverage,togetherwithafewmonitoringstations;•instablecore-faceintheshorttermsituations(cohesivetypebehaviour),inwhichthegroundisstressedinthee

6、lasto-plasticrangeanddeformationphenomenaismostlydeferredandnotnegligibleiiimagnitude,itisimportantforthedesignengineertomonitorthedevelopmentandmagnitudeofdeformationandstressinthemediumcarefully,byplacingextrusion,principalormonitoring(dependingonthedepthofthetunnel)andsystemat

7、icmeasurementstationsveryfrequentlyThisistheonlywayiiiwhichthenecessaryiiiforinationcanbeobtainedtoassesstheadecjuacyofthestabilisationinterventionandtocalibrateandperfectit.lisationinterventionandtocalibrateandperfectit・Thefrequencywithwliichthevarioustypesofmeasurementstationa

8、reinstalledwilldependonthelocalgeostruct