A pumping station type crushing rock penetration test device with sustainable sand addition

Abstract

The invention provides a pump station type broken rock seepage test device capable of feeding sand continuously. The pump station type broken rock seepage test device comprises a loading rack, a permeameter, a first hydraulic control system, a second hydraulic control system and a continuous sand feeding device, wherein the loading rack is of a hollow structure; the permeameter is arranged in the loading rack; the continuous sand feeding device comprises a dry sand feeding path, a fourth stop valve and an automatic sand feeding device; the fourth stop valve is arranged on the dry sand feeding path; one end of the dry sand feeding path is connected with the permeameter, and the fourth stop valve is arranged at the other end of the dry sand feeding path; a sand feeding port is formed in the automatic sand feeding device. By the adoption of the test device, materials of a framework can be greatly saved, the rigidity of the framework is enhanced, the volume of the device is reduced, and the manufacturability is improved; the permeameter is easy to place and move; furthermore, pump station type seepage is realized, so that sand can be continuously supplemented without stopping; the continuity of the test is guaranteed, and the test efficiency and the test effect are improved.

Description

technical field [0001] The invention relates to the field of broken rock water-sand two-phase penetration test equipment, in particular to a pumping station type broken rock penetration test device with sustainable sand addition. Background technique [0002] At present, in mining engineering, tunnel engineering and other engineering fields with broken geological structures, safety problems such as water / solid inrush from subsidence columns and water / mud inrush in complex karst tunnels often occur. Problems such as water / solid inrush in subsidence columns and water / mud inrush in complex karst tunnels can all be considered as disasters caused by water-sand two-phase seepage instability in broken rocks, so the penetration test of water-sand two-phase seepage in broken rocks is It has become the basis for the study of water / solid inrush in subsidence columns and water / mud inrush in complex karst tunnels. [0003] Existing test devices for water-sand two-phase seepage of broken...

AI Technical Summary

Problems solved by technology

However, this system has the following disadvantages: the loading system generally adopts a large material testing machine, which is bulky and heavy, not only requires a large enough laboratory area, but also is not easy to move; the effective space of the compression chamber of the material testing machine is limited , cannot satisfy the placement of permeameters at different heights; the design of the compression chamber of the material testing machine is not humanized enough, and it is difficult to move the permeameter

In addition, the existing test device adopts the method of "water driving sand", and it needs to be shut down when replenishing sand, which greatly slows down the efficiency and continuity of the test

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