爆破振动参数在地质灾害鉴定中的运用

Application of Shaking Parameters of Blasting in the Appraisal of Geological Disaster

本文论述爆破振动参数在地质灾害鉴定中的运用。指出在作爆破振动地质灾害鉴定时,除对建筑物的设计、建筑材料、建筑史、用途、结构、内外环境、地基基础、变形特征进行详细的了解记录外,还必须了解其爆破源点与被鉴定对象之间的地质环境,确定其与地形地质条件有关的系数K,衰减指数α,鉴定对象的最大振幅对应的频率、速度、爆破点的位置及炸药用量,计算振动的安全距离与剖面图上两者之间距离进行比较,为鉴定提出合理的证据。

In this paper, it elaborated the application of blast shaking in the appraisal of geological disaster. It pointed out that when appraising the blast shaking geological disaster, beside to made detailed records of the building＇s design, structural material, structural history, purpose, structure, inner - outer environment, foundation basis and deformation characteristic, it have to be familiar with the blast origin and the geological environment among the appraisal object, determine the factor K and damaged exponential ot which has relationship with the topographic and geological conditions, the frequency, speed, position of blast and dynamite dosage which the biggest amplitude of appraisal object corresponded, and calculate the safety distances of shaking and two distances on the profiles by comparison in order to provide the reasonable evidence for the appraisal.