Technology for plugging water bursting in mine by directional diversion grouting

Abstract

The invention provides a technology for plugging water bursting in mine by directional diversion grouting which can be used for plugging individual large fractures and quite a number of narrow fractures or weak zones which still exist and improving the effect in plugging water bursting in mine on the basis of ordinary grouting. Directional diversion water discharge is carried out near a water bursting point, so that the static water condition is changed as micro dynamic water condition; fine aggregates and slurries are guided to flow through a water channel to plug the water channel gradually, so that the purpose of grouting for water plugging can be achieved; and the problems of slurry waste because the slurry diffuses towards the far direction along the channel having larger fractures or the problem that new fractured gaps are formed along narrow fractures or weak zones so that the water isolation effect formed previously is damaged are overcome.

Description

technical field [0001] The present invention relates to a mine water disaster prevention technology, in particular to a directional guide for sealing individual larger cracks and quite a few small cracks or weak zones that still exist on the basis of conventional grouting, and improving the plugging effect of grouting. Flow grouting plugging mine water inrush technology. Background technique [0002] my country is one of the countries with the largest coal resources in the world, ranking third in the world. Annual coal production has been at 10×10 since the late 1980s 8 t above, ranking first in the world. In China's primary energy production and consumption, coal accounts for more than 70%, which determines the main position of coal production in China's energy industry, and the pattern of coal as the main energy will exist in China for a long time. In the process of large-scale development of coal resources, the problem of water damage related to the mining of coal res...

AI Technical Summary

Problems solved by technology

In the process of grouting, water blocking and remineralization construction, after a certain amount of aggregate and grout is injected, the main passages and fissures of the injected rock mass have been basically filled by grout, but there are still some large fissures and quite a few small ones. Fractures or weak zones; at this time, if the pump pressure grouting continues to be increased, the grout will either spread far away along the larger crack channels, resulting in waste of grout; or form new fracturing fractures along the narrow cracks or weak zones, causing the original The water barrier effect formed is destroyed

That is to say, the main function of conventional grouting is to block and cut off the supply water source and strengthen the aquifer, and the effect of blocking water inrush is not ideal

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