基岩面 meaning in English
bedrock surface
rockhead
Examples
- Abraded bedrock surface
浪蚀基岩面 - In this part , pga , pgv and pgd are studied , the main results are as follows : 1 ) in general , pga decrease with depth and can reach maximum at surface ; the pga ratio with depth of downhole / surface is affected by magnitude and ground pga value , the bigger the magnitude and pga value , the smaller the pga decrement with depth ; the decrement with depth is much more significant in near - surface than that in deep downhole
加速度峰值沿深度的变化与地震的大小和场地条件有关。对于土层场地，一般说来，随着震级和地表pga的增大，加速度峰值沿深度的下降梯度减小。对于“土层基岩”型场地，基岩面处的水平分量约是地表的1 3 . 7 ，竖向分量约是地表的1 3 . 2 。 - With practical engineering examples , this paper deals with the collection of surface wave signal along with seismic refraction exploration , the utilization of surface wave components to make analysis during data processing , the thickness division of overburden bed , strongly - weathered bed , intermediately - weathered bed and weakly - weathered bed in combination with the refraction data , and mutual reflection and interpretation of the burial condition of the bedrock surface
笔者结合工程实例，介绍了在地震折射勘探中同时采集面波信号，在资料处理时利用面波组份进行分析，配合折射资料对测区覆盖层、强风化层、中风化层及弱风化层厚度进行划分，同时相互映证解释基岩面的埋藏情况。 - This paper is on the basis of analysedding and summarized that these projects were blown up and tested materials in the past , use fracture mechanics , the dynamics blast theory and finite element analytical method , have carried on the system , detailed analysis and describes to this kind of method of blasting , proving theoretically that can cut the base rock effectively in this kind of method of blasting , reduce base blowing up stress value inside the rock , play and protect underpart base rock blow up into the function influenced in vibration , and blew up mechanism and analysed the main influence factor blown up according to it , had put forward the rational optimization measure to the relevant parameter when implementedding and blown up
本文在分析总结以往这些工程爆破试验资料的基础上，运用断裂力学、爆破动力学理论及有限元分析方法，对这种爆破方法进行了系统、详细的分析及论述，从理论上证明此种爆破方法可以有效地切割基岩面，降低基岩内部的爆破应力值，起到保护下部基岩不受爆破振动影响的作用，并根据其爆破机理分析了爆破的主要影响因素，对实施爆破时的相关参数提出了合理的优化措施。