本文首先采用量纲分析、流体动力学、功能平衡理论、爆炸动力学等理论，分析了路堑硐室松动爆破装药量计算公式及其内在联系，并指出K值在现有药量计算公式中的重要性；在分析现有K缺陷的基础上，利用能量守恒原理，研究了路堑硐室松动爆破单位炸药消耗量计算方法，并提出一种新的K值计算方法，实例验证本方法合理、可靠，优于其它K值计算方法。论文应用spss 10.0统计软件，统计、分析了硐室爆破典型药包爆炸特性及其爆破效果，确定了适宜于路堑硐室松动爆破的合理药包形式。利用波动理论，得出延期时间为nT/m时减震效果最好；在分析边坡岩体内部应力、质点速度等分布规律的基础上，指出边坡震动放大效应的不均匀性和边坡尺寸效应；结合大量滑坡实例，分析了爆破震动引起边坡失稳破坏的几种形式，总结出边坡稳定性评价准则；基于对边坡稳定性计算方法的综合分析，提出了一种综合分析方法，通过算例计算分析，证明该法计算精确度高、功能全面，是边坡动力稳定性分析的有效方法之一。 本文理论研究及计算结果较好地吻合了工程实际，对路堑硐室松动爆破应用以及爆破震动对边坡稳定性影响作用机理研究产生了一定的积极作用，为路堑硐室松动爆破设计以及路基施工规范应用提供了一定的理论依据。

In this paper, charge calculating formulas and their relations of cutting chamber loose blasting are firstly analyzed with the theories of dimension, fluid dynamics, explosive dynamics, etc and the significance of the explosive factor in it is pointed out . Calculating methods of the explosive factor are researched by law of conservation of energy ,and then a new one is brought forward which proves to be rational and reliable by a sample. By means of the statistical software , spss10.0, characteristics and blasting effects of the typical charges in chamber blasting are statistically analyzed and rational charge forms in cutting chamber loose blasting are confirmed . According to the fluctuant theory ,it is deduced that the effect of shock absorption is very obvious when deferred time equals to nT/m. Non-uniformity of the amplifying effect and dimension of the slope are pointed out through analysis of the distribution of the stress and sonic speed in the slope. Forms of slope lost stability resulted from blasting vibration are analyzed and appraising rules of slope stability are summarized by a great deal instances on coasts. Based on general discussion about calculation methods of the slope stability under the effect of blasting vibration, the synthetical method, a new one ,is put forward ,analyzed through a sample by and pointed out which is one of most valid methods. The conclusion of the research and calculation meets the engineering case well .It brings some active effects for the research of the mechanics and effect on the slope stability under blasting vibration as well as the application of chamber loose and controlled blasting. It also provides some theoretical basis for the design of the blasting and the application of the subgrade constructional specification .