地貌構造對爆破振動波影響的模擬分析研究

The Influence of Landscape Structure to The Blasting Vibration Wave Analysis

林杰濱(Cheh-Ping Lin)

指導教授 ： 丁原智

國立臺北科技大學/工程學院/資源工程研究所/碩士(2011年)

摘要

台灣的地質條件較為敏感且複雜，在採礦爆破作業施工中所引起的振動都會對鄰近之周遭建築、設施結構、邊坡和人員產生或多或少不同程度和範圍的影響，一般而言，爆破振動波在岩體介質中傳播特性及衰減程度主要取決於岩體的地質特性以及爆破設計參數，然而在地形起伏及變化較大之情形下，地層對振動波傳播特性亦受到地形地貌變化相當大之影響，振動波的傳播受局部地形的影響，即地形效應，本研究以小規模之爆破震動施加於預先設計製作之實體地形模型，進行振動值之量測並分析地形變化對振動波之衰減及放大效應，藉以分析爆破振動波對地形變化之傳播行為進行回饋分析研究，經實測發現爆破振動波速度及垂直向震幅經過凸起地形會有減緩作用，反之則有加速情形發生，因此礦場在實施爆破作業時應將地形起伏的影響列入礦場減震作業因素考量。

關鍵字

爆破振動 ； 振動波 ； 地形效應

並列摘要

Taiwan' geological condition is quite sensitive and complex . Explosive in mining operations will impact adjacent buildings, facility structures, slopes and human by the blasting vibration. In general, the characteristic of propagation of vibration wave in rock media and its decaying mainly depend on the geological characteristics of rock and parameters of explosive design. However, in the present of rugged topography , propagation of vibration wave is considerably affected by change of ground surface. The effect of such Vibration wave propagation is call "Topography Effect". In this study, a small-scale blasting vibration was created and applied to a designed physical terrain model. By measuring the vibration and analyzing topographic change related to the effect of the vibration wave's attenuation and amplification, it was useful in studying the behavior of propagation of blasting vibration wave in topographic area and its feedback analysis, In the study, it was found that the velocity of blasting vibration and vertical amplitude decreased when passing through bulge terrain, but increased the same way while passing through sunken area. Therefore, when performing blasting operation, it is important to include topography effect into consideration as factors which may affect vibration reducing operation in mine filed.

並列關鍵字

Vibration ； vibration wave ； topographic effects

參考文獻

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