Mining subsidence similar test model device

Abstract

The invention relates to a mining subsidence similar test model device including a cubic container with adjustable volume, a model bracket base, a bottom plate, bar-shaped longitudinal beams, a movable plate assembly, a slipping-type laser distance measurement scanner, a laser scanning simple device and the like. A similar material analogic to underground rock soil is utilized for testing, and according to different excavation schemes, an excavation process is simulated through pulling open movable plates of the container bottom plate, so as to induce collapse of a rock-soil body to be simulated in a model bracket. After the collapse stops, an underground goaf top plate form and a simulated earth surface are scanned by the bottom laser scanning simple device and the top slipping-type laser distance measurement scanner which are matched, and three-dimensional coordinate data are obtained. Under conditions with no contact and no disturbance of a structure / engineering entity, the same-kind test device performs one-time test to complete simulation mining of different bottom-pulling modes and different forms of ore-rocks, the goaf top plate three-dimensional form and the overlying strata earth surface subsidence process under induction mining are all-dimensionally disclosed, and requirements of flexible design, convenient operation and controllable data acquisition are satisfied.

Description

technical field [0001] The invention relates to an engineering test model device, in particular to a mining subsidence similar test model device. Background technique [0002] The indoor similarity test is based on the similarity theory and model test, which effectively solves a series of problems such as the complex and changeable influencing factors and the irreversible mining process in the actual mining of ore deposits. The phenomenon and process of geological disasters such as surface subsidence and rock layer movement caused by natural disasters. Many existing similar test equipment have advantages in external load loading, etc., but in different bottom-drawing shapes and bottom-drawing sequences, observation of roof caving in empty areas after excavation, spatial effects of stratum subsidence and subsidence laws, etc. The obvious disadvantages are that it is difficult to realize different bottom-drawing mining methods in one test and the same test device is suitable ...

AI Technical Summary

Problems solved by technology

Many existing similar test equipment have advantages in external load loading, etc., but in different bottom-drawing shapes and bottom-drawing sequences, observation of roof caving in empty areas after excavation, spatial effects of stratum subsidence and subsidence laws, etc. Obvious shortcomings, it is difficult to realize different bottom-drawing mining methods in one test and the same test device is suitable for simulated mining of different shapes of ore rocks, etc. The operation process is cumbersome and the observation equipment is expensive, so it is difficult to widely popularize and apply

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