Fourth Tunnel Detection Symposium on Subsurface Exploration Technology

Transcription

1 PROCEEDINGS Fourth Tunnel Detection Symposium on Subsurface Exploration Technology April 26-29, 1993 Golden, Colorado, USA Sponsored by: Combat Engineering Directorate, U.S. Army Belvoir Research, Development, and Engineering Center In cooperation with: Colorado School of Mines - Office of Continuing Education Department of Geophysics Department of Mining Engineering UB/TIB Hannover

2 Table of Contents Foreword -I - Page Program Committee Members - IX Session Chairpersons - X - Opening Remarks 1 Phillip R Romig The Dragon Head Method For Tunnel Detection And 5 Using PEMSS Data For Determining Geology Frank Ruskey Afterthoughts On Anticipating Problems And Nuturing 10 Opportunity In Geophysical Searches Frank Ruskey Session 1: Ground Penetrating Radar 17 PEMSS Response Of Rock Tunnels To "In-Axis" And 19 Other Nonperpendicular Antennae Orientations Alleman, T.J., Cameron, C.P., and Mac Lean, H.D. PEMSS Characterization Of Metamorphic Environments 45 In The Central Korean Peninsula Cameron, C.P., Mitchell, K.D., Shin, K.C., and Walker, B.W. Sixteen Channel Ground-Probing Radar Detection And Imaging 65 Of Tunnels And Other Sub-Surface Features Chignell, RJ. Radar Waveforms From A Three Dimensional Tunnel 71 Moron, M.L., and Greenfield, RJ. Pulsed GPR Detection Of Voids In Layered Geologic Materials 85 Roggenthen, W.M. -HI

3 Session 2: Seismic Methods 93 Source Signature - An Experimental Approach 95 Descour, J.M. Seismic Location Of Small Explosions And Shot Hole 115 Drilling At The Colorado School Of Mines' Edgar Mine, Idaho Springs, Colorado Lewis, RD., Koester, J., Sykora, D., and Greenfield, RJ. Cross-Borehole Seismic Signatures Of Tunnels 131 Rechtien, RD., Greenfield, RJ, and Ballard, Jr., RF. Location Of A Tunnel Boring Machine (TBM) Using Seismic 147 Wavefield Analyses Silva, W., Stark, C. and Ruskey, F. Seismic Tomography At The WIPP Site 179 Andersen, H. T., and Skokan, C.K. Session 3: Data Processing 183 Prestack Imaging And Tomographic Inversion Of 185 Seismic Cross-Borehole Data Balch, A.H., and Karazincir, M.H. Digitizing Analog Radar Data 197 Beasley, Jr., G.C. Electromagnetic Data Evaluation Using A Neural Network: 207 Initial Investigation - Underground Storage Tanks Cisar, D., Dickerson, J., and Novotny, T. Time-Frequency Representations Applied To Analysis Of 221 Hole-To-Hole Electromagnetic Data Duff, B.M., and Zook, BJ. The Role Of Cross Borehole Radar In The Discovery of 253 "Fourth Tunnel" At The Korea DMZ Kim, S-Y., and Ra, J-W. -rv-

4 Waveform Modeling Of Electromagnetic Tunnel Signatures 259 For Integral Equation TE And TM Mode Greenfield, RJ. High-Speed Digital Radar Systems and Applications To 275 Subsurface Exploration Wright, D.L., Olhoefi, G.R, Grover, T.P., and Bradley, J.A. Session 4: Cross-Hole Tomography 289 Cross Well Acoustic Tomography To Delineate Abandoned 291 Underground Mine Workings Killoran, L.K., Munson, RD., and Rich, T. T. Cross-Hole Tomography Using Improved Born Inversion 299 Kim, J-K, Kim, S-G, and Ra, J-W. Velocity, Attenuation, Dispersion and Diffraction 307 Hole-to-Hole Radar Processing Olhoefi, G.R Cross-Borehole Measurement Of Dipole Array Patterns In A 321 Dissipative Medium: A Laboratory Scale Model Study Peden, I.C., and Kipp, R Cross-borehole Seismic Tomographs Of Tunnels 333 Rechtien, RD., and Ballard, RF. Diffraction Tomographic Signal Processing Algorithms 345 For Tunnel Detection Witten, A.J., Schatzberg, A., and Devaney, A.J. Tunnel Imaging Employing Pseudo-Attenuation Of 357 High-Frequency Seismic Waves Wong, J., Wright, J, and Block, L. Session 5: Models 377 Efforts To Generate Guided S-Waves In Rock 379 Descour, J.M., and Miller, RJ. -V-

5 Development Of A Wide-Band Amplitude And Phase Measurement 391 System For Underground Imaging Ha, T-S., Yun, J-S., Kang, J-S., and Ra, J-W. Forward Modeling Of Electromagnetic Wave Propagation In Layered 399 Media: Implications For Cross-Borehole Radio-Wave Detection Of Voids In Coal Measure Rocks Jackson, M., Wedepohl, E., Friedel, M., and Hauser, K Near-Field Diffraction Pattern By A Trapezoidal 413 Cylindrical Air Cavity Lee, T-K, Kang, J-S., and Ra, J-W. Laboratory Investigations Of The Seismo-Electric Effect 425 Skokan, C.K, and Chi, D. Gradiometer Antennas For Detection Of Tunnels By 435 Scattered Electromagnetic Waves Stolarczyk, L.G., and Allen, J. Decision Aids For Subsurface Exploration 447 Weisinger, J.R Session 6: Other Methods 459 The Application Of Coal And Rock Thickness Measurement 461 Technology To Tunnel Detection Chufo, RL. Gradiometer Antennas For Tunnel Detection 479 Hill, DA. Tunnel Detection Without The Use Of Boreholes: What Are Our 497 Capabilities And What Improvements Can Be Made? Kemerait, RC. Electromagnetic Detection Of Buried Dielectric Targets 517 In Low Loss Media Peden, I.C., Schneider, J.B., and Brew, J. Considerations For Geophysical Survey Design And 537 Data Interpretation Romig, P.R, and Wilson, D. -VI-

6 Resistivity Changes Over Time Related To Modeled Fluid Row 545 In Room-Q Of The Waste Isolation Pilot Plant Truskowski, M.G., and Andersen, H.T. Detection Of Deeply Buried Tunnels With Electrical Conductors 561 Stolarczyk, L.G., and Allen, J. Session 7: Case Studies 573 Surface Geophysical Methods Applied To The Detection Of 575 Shallow Tunnels And Buried Objects Allen, J.W. Exploration Case History And Engineering Geology of "Tunnel-4", 595 Northern Punchbowl Sector, Korean Demilitarized Zone Cameron, C.P. Geophysical Techniques Applied To Cavity Detection At The 617 Wharf Mine, Lead, South Dakota Hauser, KL., and Friedel, M.J. Stealth Tunneling Using Trenchless Technology 637 Coss, T.R Borehole Radar Tunnel Detection At Gjovik, Norway 649 Kong, F.N., Westerdahl, H, and By, T.L. Mining Through Underground Workings At Wharf Resources' 659 Open Pit Gold Mine, Black Hills, South Dakota, USA Hammond, A.D., and Loomis, TA. APPENDIX A: Index To Authors 671 APPENDIX B: Symposium Attendees 675 APPENDIX C: BRDEC News Release on BRAC VII-