论文部分内容阅读
在现场勘查中,我们经常遇到粉灰尘的减层、立体足迹,特别是在经常无人出入的仓库、沸腾炉下或是在风沙较大的乡村,这种立体足迹更是常见。以前通常用照相来固定,利用这种方法提取的足迹局限性很大,有些细微特征在照片上反映不明显,有的甚至根本反映不出来,这给检验工作造成了很大难度,也大大降低了现场勘查的利用率。根据这一情况,通过多次反复实验,我们发现,这种减层足迹也可以用石膏来提取,其方法是:用市场上销售的定型喷发胶,上下振摇数次,使其桶内胶水均匀,然后直立胶桶,大约在距足迹一米高倾
In the field survey, we often encounter the dust layer reduction, three-dimensional footprint, especially in the often unmanned warehouse, boiling furnace or in the windy country, this three-dimensional footprint is more common. Previously used to fix the camera, the use of this method to extract the limited footprints, some of the subtle characteristics of the photos reflected in the obvious, and some do not even reflect it, which made the inspection work is very difficult, but also greatly reduced Utilization of site survey. Based on this situation, through repeated experiments, we found that this subtractive footprint can also be extracted with gypsum by shaking it up and down several times using a commercially available styling gel, Uniform, and then upright plastic bucket, about a meter high from the footprint tilt