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NUCLEAR WEAPONS EFFECTS AND RESULTS OF PREVIOUS TESTS
NUCLEAR WEAPONS EFFECTS AND RESULTS OF PREVIOUS TESTS
Pages 27-45
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From page 27... ...
The structural damage observed in several completely contained nuclear events (namely, events "Hard Hat," "Pile Driver," Mighty Epic," and "Diablo Hawk") yields data useful for planning the design and construction of deep basing facilities.
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From page 28... ...
The prompt radiation is also a significant item and could create significant damage to anything on the surface. As the stress waves propagate downward from the crater, we have the directly induced ground shock, which Dr.
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From page 29... ...
The underground explosion test series conducted in l948 to l953, logistically supported out of Dugway Proving Ground, Utah, included granite, limestone, and sandstone, with a tunnel below the burst point. The burst point was a buried burst; much of the data were gathered by documenting the behavior of those tunnels following the detonation.
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From page 30... ...
We also varied configuration: X intersections, T intersections and complete structures, capsules at the bottoms of the X intersections. The structural types included rock bolts, unlined openings, and various types of sophisticated lining, but before we touch briefly on the construction methods and the results of that particular experiment, I would like to note some of the major features of the geology at Area l5 of the Nevada Test Site.
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From page 31... ...
Figure l2 shows a heavily rock bolted section. The rock bolts are some two feet on centers.
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From page 32... ...
In passing, let me briefly comment on the result of a reloading of a structure where it first saw one kilobar propagating in a direction perpendicular to the longitudinal axis (side-on) in Mighty Epic; and axially in Diablo Hawk with stress levels, depending where you were in the drift, anywhere from one kilobar to about three-eighths kilobar range.
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From page 33... ...
DR. LINGER: I think, in answer to that question, the instrumentation technology has improved probably two orders of magnitude since these tests were conducted, and I think that we will see a high-speed photograph of this tunnel during the shot, and the man that is going to do that is the manager of the Construction Division at Nevada Test Site, and I think he has tremendous reliability built into his instrumentation, more so now than ever before.
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From page 34... ...
INDUSTRIAL STRUCTURES 167 :v • FIGURE 1 (5.34a) Destroyed industrial area showing smokestacks still standing at 0.5l mile from ground zero at Nagasaki (from The Effects of Nuclear Weapons, l977)
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From page 35... ...
35 168 STRUCTURAL DAMAGE FROM AIR BLAST ; •• FIGURE 1 (5.34b) A circular, 60 feet high, reinforcedconcrete stack at 0.34 mile from ground zero at Hiroshima (from The Effects of Nuclear Weapons, l977)
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37 la £ 5 *
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38 -P r-1 -- 4)
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39 0> SURFACE lS» \i 36" CASED HOLE (STATiOM UlSoI 800' ELEVATOR SHAPT (STATION iSOOl TEST T -A ELEV OF -t TEST DRIFT-A TEST DRIFT -B TEST 1 -C ." IH ZERO POINT - Vertical Section. Event Hard Hat FIGURE 5
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40 -- TEST DRIFT c - Plan View of Test Sections. Event Hard Hat FIGURE 6
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4l CO to u o: 3D CD
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42 CO UJ cc CJ
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. FIGURE 10 Structures with packing, sections CRl and CRla (event Pile Driver)
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From page 44... ...
. FIGURE 12 Structure with rock bolts and mesh -- end-on loading, sections CR5 and CR6 (event Pile Driver)
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