普通数码照相测量在岩移模拟实验中的应用

Application of ordinary digital photographic measurement in simulative experiment of strata movement

以新安县新安矿区王家沟村的一处采空区为工程背景,对采空区在库水反复冲掏及溶蚀下的活化机理进行了相似材料模拟研究。研究采用非接触式的普通数码照相测量技术,对模型上各位移点进行影像采集及数据解算,得到了活化岩层和地表的下沉曲线及水平移动曲线,分析了活化岩层的移动规律及其对地表的影响。在实验中,对其测量结果的精度进行了比较分析。结果表明,普通数码照相测量技术不仅克服了传统测量方法的不足,而其测量的点位中误差仅在0.010 7 mm左右,因此在相似材料模拟实验中具有较高的实用价值。

In order to study the activation mechanisnl of nfined-out areas after being scoured and dissolved repeatedly by the reservoir water, a simulative experiment of sinfilar material was carried out based on a nfined-out area in Wangjiagou Village of Xin＇an Mine, Xin＇ an County. With the technology of ordinary non-contact digital photographic measurement, the image sampling and data decoding of dis- placement dots on the model had been achieved. Accordingly,the curves of subsidence and horizontal movenlent of activation terranes and ground surface were obtained. The movenlent law of activation terranes and its ilffluenee on the ground surface were also analyzed. The nlovement law of activation terranes and its influenee on the ground surface were also analyzed. In this experiment, we made a comparative analysis of the precision of the measured results. The results indicated that the technology of ordinary digital photographic meas- urement overeomed the shortcomings of traditional measuring methods, and the measured RMSE of geometrical position of dots was about 0. 010 7 mm. The technology of ordinary digital photographic measurement could be used in the simulative experiment with great practical value.