由試驗結果得知，夯擊瞬間所測得土層表面不同水平距離處之加速度振幅，因幾何阻尼效應及材料阻尼效應，使其隨距離之增加而衰減。所以對於被動阻隔所探討的振源與隔振溝間之距離，理論上是愈遠愈好，但若受限於施工地區的大小時，則最少須大於3倍的振波波長，此與Segol(1978)利用數值模擬所得之結果相同。
另外，在主動阻隔方面，經不同深度之隔振溝的試驗可知，若欲使隔振溝設置後，能降低地表加速度振幅至無隔振溝存在時的0.25倍，則其深度至少須為0.7倍的振波波長，但當隔振溝深度大於0.9倍的振波波長時，隔振效果已無明顯的增加。

From the results of experiment, it was revealed that the amplitude of ground surface acceleration of different horizontal distances measured at the moment of impact were reduced as the distance increased due to the geometrical and the material damping effect. Therefore, as to the distance between the impact source and the isolation trench in the concern of passive isolation it was found that the farther the distance the better the isolation effect, theoretically. However, if the size of operation area was restricted, the distance should be at least greater than 3 times of wavelength. This result was consistent with that of Segol’s study (1978) using digital simulation.
Besides, in the studies of active isolation, the experimental results from different depth of isolation trench indicated that the depth of isolation trench should be at least 0.7 times of wavelength to reduce the amplitude of ground surface acceleration to 25 percent of that without an isolation trench. However, when the depth of isolation trench was greater than 0.9 times of wavelength, there was no significant increase in the effect of isolation.

[1] 山田正俊，「動壓密工法」，軟弱地盤改良工法 關 現狀 動向講演會資料，第89-97頁(1982)。
[2] 土質工學會，土質調查法，土質工學會，日本，第189-219頁(1982)。
[3] 李建中、張心宗，「打樁引致之地表振動」，土木水利，十卷四期，第46-59頁（1984）。
[4] 阪口旭、西海宏、服部征夫、住吉正信，「動力壓密工法於油槽基礎之運用」，土與基礎，Vol.27，No.9，第5-11頁(1979)。
[5] 呂協宜，「反覆錘擊對砂土力學性質之改良機制」，碩士論文，國立中央大學土木工程研究所，中壢（1998）。
[6] 周國鈞，地基處理技術第一冊，中國冶金工業出版社，北京，第1-138頁(1989)。
[7] 范維垣、史美筠、裘以惠，「關於強夯法加固地基的幾個問題」，地基處理學術會議論文選集，第7-15頁(1980)。
[8] 康裕明、吳一民，「落體震源的特性探討」，第六屆大地工程學術研討會論文集，第255-263頁(1995)。
[9] 黃建順、鍾毓東，「土壤改良－動力壓密法」，地工技術雜誌，第4期，第73-87頁(1983)。
[10] 張惠文、溫年通、李嶸泰，「砂土承受夯擊時之波動傳遞與阻隔效果」，中華民國力學學會第23屆全國力學會議論文集，新竹市，第354-361頁(1999)。
[11] 張永鈞，平涌潮，孔繁峰，張峰，「強夯法處理大塊拋石地基的試驗研究」，中國第三屆全國地基處理學術討論會論文集，秦皇島，第395-400頁(1992)。
[12] 葉文謙、吳建閩、鍾毓東、余明山，「液化風險與土壤改良評估案例」，地工技術雜誌，第67期，第43-54頁(1998)。
[13] 鳴海直信，「最近軟弱地盤對策工法設計施工例－動力壓密工法」，建設月刊，第69-78頁(1987)。
[14] 熊雲嵋，「震測折射法在大地工程上之應用」，地工技術雜誌，第2期，第46-54頁(1983)。
[15] 潘少昀、黃子明，「動力壓密工法在海埔新生地地盤改良工程之應用」，第六屆大地工程學術研討會論文集，第1071-1082頁(1995)。
[16] 簡枝龍，「壕溝阻隔地表剪力波之有效性」，碩士論文，國立中央大學土木工程研究所，中壢（1986）。
[17] Ahmad, S., Al-Hussaini, T. M., and Fishman, K. L.,“Investi -gation of Active Isolation of Machine Foundations by Open Trenches,”Journal of Geotechnical Engineering, ASCE, Vol. 122, No.6, pp. 454-461 (1996).
[18] Al-Hussaini, T. M. and Ahmad, S,“Active Isolation of Machine Foundations by In-Filled Trench Barriers,”Journal of Geotechnical Engineering, ASCE, Vol.122, No.4, pp. 288- 294 (1996).
[19] Barkan, D. D., Dynamic of Bases and foundation, McGraw-Hill, New York (1962).
[20] Das, M. B., Principles of Geotechincal Engineering, PWS Publishing Company, Boston (1994).
[21] Emad, K. and Manolis, G. D.,“Shallow Trenches and Propa -gation of Surface Waves,”Journal of the Engineering Mechanics Division, ASCE, Vol.111, No.2, pp. 279-282 (1985).
[22] Jessberger, H. L., and Beine, R. A.,“Heavy Tamping : Theoretical and Practical Concepts,” Proceedings of the 10th ICSMFE, Stockholm, pp.695-699 (1981).
[23] Jessberger, H. L., and Godecke, H. J.,“Theoretical Concept Saturation of Cohesive Soils by Dynamic Consolidation,”Proc. 9th ICSMFE, Tokyo, Vol.3, pp. 449-451 (1977).
[24] Lukas, R. G.,“Geotechnical Engineering Circular No.1－Dynamic Compaction,” U.S. Department of Transportation, Federal Highway Administration (1995).
[25] Lysmer, J., and Richart, F. E.,“Dynamic Response of Footings to Vertical Loading,”J. Soil Mech. And Found. Div., Proc. ASCE, Vol.92, No.SM1, pp. 65-91 (1966).
[26] Lysmer, J., and Wass, G.,“Shear waves in plane infinite surface,”Journal of the Engineering Mechanics Division, ASCE, Vol.98, No.1, pp. 351-358 (1972).
[27] May, T. W. and Bolt, B. A.,“The Effectiveness of Trench in Reducing Seismic Motion,”Earthquake Engineering and Structure Dynamic, Vol.10, No.2, pp.652-674 (1982).
[28] Menard, L. and Broise, Y.,“ Theoretical and Practical Aspects of Dynamic Consolidation,”Geotechnique, Vol.25, No.1, pp.3-18 (1975).
[29] Mitchell, J. K. et. al.,“Performance of improved ground during earthquakes,”Soil improvement of earthquake hazard mitigation, Geotechnical Special Publication of ASCE, No.49, pp.1-36 (1995).
[30] Segol G., Lee, P. C. Y., and Abel, J. F.,“Amplitude Reduction of Surface Wave by Trenches,”Journal of the Engineering Mechanics Division,”ASCE, Vol.104, No.3, pp. 621-641 (1978).
[31] Theissen, J. R. and Wood, W. C.,“Vibration in Structures Adjacent to Pile Driving,”Dames and Moore Engineering Bulletin, No.60, pp.4-21 (1982).
[32] Woods, R. D.,“Screening of Surface Waves in Soils,”Journal of the Soil Mechanics and Foundations Division, Proceedings of the ASCE, Vol.94, No.SM4, pp.951-979 (1968).
[33] Wiss, J. F.,“Construction Vibrations: State-of-the-Art,”Journal of the Geotechnical Engineering Division, Proceedings of the ASCE, Vol. 107, GT2, pp. 167-182 (1981).