Experiment system for water and sand seepage of fractured rock mass

Abstract

The invention provides an experiment system for water and sand seepage of a fractured rock mass. The experiment system comprises a water and sand mixing device, a fractured rock mass experiment device, a rock mass loading component and a data acquisition device; the fractured rock mass experiment device comprises an inner cylinder, an outer cylinder and a base, the inner cylinder is arranged in the outer cylinder, and both the inner cylinder and the outer cylinder are arranged on the base; a groove is formed in the base, flow guide holes are uniformly formed in the lower end surface of the groove and are communicated with a seepage liquid conveying pipe; a water and sand injection hole of the water and sand mixing device is communicated with a water and sand through hole of the fractured rock mass experiment device; the rock mass loading component adopts an axial loading machine, a piston of the axial loading machine is arranged at the upper part of the inner cylinder of the fractured rock mass experiment device. The invention provides the experiment system for water and sand inrush of the fractured rock mass, which is simple in structure, reasonable in design, convenient to assemble and use and good in sealing performance and can really reflect the seepage amount of a water and sand mixture under the situation of the water and sand inrush of the fractured rock mass.

Description

technical field [0001] The invention relates to the technical fields of sand seepage damage and mine hydrogeology, in particular to an experimental system for simulating water inrush and sand collapse under the conditions of axial load and lateral water-sand two-phase seepage of a broken rock mass. Background technique [0002] Water inrush and sand inrush is a sand (sand) body that is rich in water and loses shear resistance due to weathering and other reasons when mining mineral resources underground. The original balance of the sand (sand) body is broken. When the water and sand flow accelerates into the well until the well is flooded, it is a geological disaster in which the water and sand regain a balanced and stable state, also known as water and sand infestation. [0003] Jurassic coalfields in Northwest my country have shallow burial depth, thin bedrock, thick loose layers, large mining heights, and strong water-rich aquifers. Under the condition that the bedrock min...

AI Technical Summary

Problems solved by technology

Chinese patent CN 203672759 U only considers the vertical water and sand inrush of the mine, but does not consider the lat

Images