A Versatile Rock Melting System For the Formation ... - The Black Vault

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Fig. 3.Rock-wool and black glass debrisfrom holes melted by extrudingpenetrator.Fig. 5.Consolidating Subterrene Penetrator"holing through" a 16-m (50-ft)-long horizontal hole.Fig. 4.Modular Subterrene field demonstrationunit melting drain holesat Bandelier National Monument.Fig. 6.Stem aitd service head in positionto melt a 50-mm (2-in.)-diamhorizontal hole.
additional field tests and for demonstrationsof improved consolidating and extruding penetrators.In addition, LASL is currently developinga 114-mm (4.5-in.)-diam, consolidating,coring penetrator that will produce a 63-ron(2.5-in.)-diam glass-encased core.B. Small-Diameter Horizontal SubterreneSystemThe coring capability for the Subterrene,together with the commercial needs for hori-V 8zontal holes for underground power lines 'and a review of reguests for information onthe rock-melting Subterrene, has promptedthe preparation of preliminary design conceptsand specifications for a horizontalSubterrene capable of melting glass-lined,76-mm (3-in.)-diam holes to lengths of *>> 50 m(165 ft) with sufficient accuracy for mostcommercial applications. Horizontal glasslinedholes cf this diameter and lengthcould be useful as:Fig. 7.Consolidating penetrator aftermelting a 76-mm (3-in.)-diamhole in £os Alamos tuff.• Melting stable, 50-mm-diam glass-casedholes in shales, adobe, and alluvium(Pig. 8).In addition, the prototype test program hasdeveloped a universal extruding penetrator(UEP) designed for hard, dense rock. Testswith this unit have:• Melted 66-mm (2.5-in.)-diam holes inbasalt and granite (Fig. 2).• Demonstrated the capability oftailoring debris for differentapplications to meet varying debrisreturnsystems (Fig. 3).A modularized, mobile field-test anddemonstration unit (Fig. 4) has been constructed,and was used successfully formelting glass-lined drainage holes in thefloor of Indian ruins at Bandelier NationalMonument. This test rig will be used for• Glass-lined drain holes for subsidedmines.« Glass-lined drain holes through dikedareas to accelerate drainage afterflooding.• Injection holes for burning mines.• Sealed, glass-lined inspection holesin mine faces or in dax. abutments.• Sealed, glass-lined inspection holesin suspected pollution areas.• Underground utility conduits fortelephone, gas, water, and televisionlines.• Glass-lined holes for high-explosiveshot emplacement.• Drainage holes to stabilize roadcuts and embankments.System descriptions, preliminary designconcepts, and detail component descriptionsare presented in the followingsections, along with indications of additionaldevelopment programs required toprovide subsystems that are not yet availablefor this versatile horizontal holemeltingdevice. Such a device will also
Page 2 and 3: LA-5422-MSINFORMAL REPORTA Versatil
Page 4 and 5: LA-5422-MSInformal ReportUC38ISSUED
Page 6 and 7: A VERSATILE P-OCK~MELTING SYSTEM FO
Page 10 and 11: AFig. 8.External surface of glass-l
Page 12 and 13: (o;-Penetrator ^-Glass Former Stem-
Page 14 and 15: III.SUMMARY OF SYSTEM SPECIFICATION
Page 16 and 17: encountered. Melting-consolidating
Page 18 and 19: following critical paths or interse
Page 20 and 21: small-diameter horizontal Subterren
Page 22 and 23: Survfyor't Tronlf-OitfngSFl-• Con
Page 24 and 25: REFERENCES1. E. S. Robinson, R. M.

A Versatile Rock Melting System For the Formation ... - The Black Vault

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