Accession Number : AD0755545
Title : Development of a Repetitive Explosion Device for Rock Fracturing.
Descriptive Note : Final rept. 23 May-15 Dec 72,
Corporate Author : SOUTHWEST RESEARCH INST SAN ANTONIO TEX
Personal Author(s) : Colburn,Johnnie W. , Jr. ; Mathis,Ronald J.
Report Date : DEC 1972
Pagination or Media Count : 56
Abstract : The objective of the contract was to demonstrate that repetitive fuel/air explosions would augment the rock-fracturing capabilities of a standard D7F Caterpillar tractor with a parallelogram-type ripper. A standard D7 Caterpillar tractor with ripper was modified to incorporate a means of discharging high-pressure combustion gases near the point of ripper penetration of a rock formation. Testing of the D7/REDSOD Ripper was performed in two distinct types of Edwards Group Limestone. The results of these tests indicate that a REDSOD-augmented D7 Ripper will produce significant increases in production rate compared to that of the standard D7 tractor-in marginally rippable/unrippable material. This increased production is realized throughout the range of tractor-operating velocities.
Descriptors : (*EARTH HANDLING EQUIPMENT, ROCK), (*ROCK, FRACTURE(MECHANICS)), EXHAUST GASES, COMBUSTION CHAMBERS, TRACKED VEHICLES
Subject Categories : Construction Equipment, Materials & Supplies
Distribution Statement : APPROVED FOR PUBLIC RELEASE