Application of close-range photogrammetry to observe strata movement of similar material model

On the great number and density of measuring points of strata movement mould with resemblance material, the close-range photogrammetric method is used to observe movement of measuring points of test mould, and obtains a good result. This new method possesses high measuring speed; high precision and can achieve instantaneous measurement, is superior to the traditional observing methods and worth popularizing.