Two-way loading fractured rock mass visual splitting grouting test device and method

Abstract

The invention provides a two-way loading fractured rock mass visual splitting grouting test device and method, and is suitable for the field of geotechnical engineering. The device comprises a splitting steel plate box, a side pressure loading part, a grouting part, a stress monitoring part, a separated hydraulic jack and a high-speed camera. Axial pressure is applied through the loading device, the lateral pressure is applied through water pressure by means of a lateral loading liquid bag, the scalability of the lateral loading liquid bag is combined with the characteristic that the rigidityof the axial pressure loading plate is small, and corner effect of a loaded fractured rock mass is eliminated. Furthermore, the whole transportation process of the split grouting slurry can be shot inreal time by adopting a transparent acrylic plate; rock samples are spliced according to different combination phases to form a fractured rock mass, and fractures with different inclination angles inthe rock mass are well simulated; the problems of the corner effect and invisibility in a loaded rock mass sample are solved, the fractured rock mass is assembled in a rock sample splicing mode to besubjected to a splitting grouting test in a two-way stress state, and important significance is achieved for researching fracturing grouting of the fractured rock mass.

Description

technical field [0001] The invention relates to a grouting test device and method, and is especially suitable for a visual splitting grouting test device and method for two-way loading cracked rock mass used for physical simulation in the field of geotechnical engineering. Background technique [0002] The grouting theory is a basic theory under the multidisciplinary interdisciplinary, which mainly involves disciplines such as hydraulics, fractured rock mechanics, fluid mechanics, and consolidation mechanics. Based on the method of grout consolidation, the relationship among related grouting parameters such as grouting radius, grouting pressure, grouting flow rate and grouting gel time is theoretically established. At present, most scholars are limited to the study of permeable grouting and grout diffusion in the research of grouting, and there are few researches on existing split grouting. For the research of split grouting, most scholars are taking soil as the object of s...

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Problems solved by technology

At present, most scholars are limited to the study of permeable grouting and grout diffusion in the research of grouting, and there are few studies on the existing split grouting.

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