Fractured rock mass water inrush and sand inrush simulation experiment device capable of continuously supplying water and sand

Abstract

The invention relates to a fractured rock mass water inrush and sand inrush simulation experiment device capable of continuously supplying water and sand. The device is characterized in that water is quantitatively added from a top base by virtue of a water flow supplying and measuring device, sand is continuously supplied by virtue of two sand injection pipes at the side part above a permeation main cylinder, the water and the sand are mixed, then enter fractured rock mass via a porous water permeable plate, then enter a piston and then are discharged, collected and measured, the porous water permeable plate, a pressure bearing circular ring and the top base are arranged above the fractured rock mass, the piston is arranged below the fractured rock mass, equipment is mounted on a press, under the action of the press, the piston moves, and the fractured rock mass can be compressed to designated porosity (described in the specification) or a specified axial force can be applied to the fractured rock mass. The device provided by the invention can continuously supply sand during a test, can simulate the condition of seepage of a water-sand mixed fluid formed by a large number of sand grains under the action of water flow in the fractured rock mass and can improve test accuracy and test effect.

Description

technical field [0001] The invention relates to a test simulation device for the problem of water inrush and sand inrush disasters encountered in shallow buried deep, thin bedrock and thick aeolian sand mining areas in western China, in particular to a broken rock mass water inrush that can continuously supply water and sand Sand inrush simulation experimental device is suitable for the study of fluid-solid two-phase mixed fluid seepage problems. Background technique [0002] With the gradual reduction of coal resources in eastern my country, the country has gradually shifted the focus of coal resource development to the west. Large-scale and rational development of coal resources in the west is an urgent need to ensure my country's long-term energy supply. Most of the western part of my country is arid and semi-arid water-scarce areas, with an average annual precipitation below 400mm, and the ecological environment is easily damaged by human activities. Moreover, the coal ...

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Problems solved by technology

[0014] In order to overcome the shortage that the existing equipment cannot continuously supply sand, the present invention provides a simulation experiment device for water and sand inrush of broken

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