Multi-stage loading testing device for simulating excavation of rock mass in different dip angles

Abstract

The invention discloses a multi-stage loading testing device for simulating excavation of a rock mass in different dip angles. The multi-stage loading testing device comprises an outer frame and a multi-stage loading device, wherein the outer frame comprises a fixing frame, an inclined steel plate, a hydraulic lifting column and a fixing bottom plate; the multi-stage loading device is arranged on the fixing frame; the multi-stage loading device comprises an inner frame, a steel plate, return devices, electromagnetic loading devices and connecting buckles; the inner frame comprises an inner frame body, a connecting tube and two vertical steel tubes; the upper ends and the lower ends of the two vertical steel tubes are respectively connected with the upper end and the lower end of the inner frame; the inner frame is in sliding connection with two sides of the fixing frame; the steel plate is fixedly connected with the frame; one sides of two electromagetnic loading devices are connected with the two vertical steel tubes through the connecting buckles respectively; the other sides of the two electromagetnic loading devices are connected with the steel plate through the return devices. The multi-stage loading testing device is simple in principle, easy to operate and load, convenient in testing, relatively approximate to actual excavation situations of sites, and relatively accurate in testing result.

Description

technical field [0001] The patent of the invention relates to a multi-stage loading test device for simulating the excavation of rock masses with different dip angles, and belongs to the technical field of teaching and test auxiliary equipment. Background technique [0002] After the rock mass is excavated, the stability research under the action of external force has always been the focus of scientific research and engineering circles. In particular, the vibration generated during the blasting construction process will inevitably have a great impact on the surrounding buildings. For this reason, there are more and more experimental devices for blasting excavation in the laboratory. However, during the simulation test, due to the limitation of the size of the test frame, the pouring of the components was too cumbersome, and the lateral loading position was fixed, which was basically a single point loading, resulting in excessive deviation of the test results. In addition, t...

AI Technical Summary

Problems solved by technology

However, during the simulation test, due to the size limitation of the test frame, the pouring of the components was too cumbersome, and the lateral loading position was fixed, which was basically single-point loading, resulting in excessive deviation of the test results

In addition, the existing test devices are basically under one-sided pressure, which is quite different from the field conditions, which also affects the accuracy of the test results.

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