Sunken mine high-flow and high-flow-rate pipe fracture type karst gushing water blockage method

Abstract

The invention discloses a sunken mine high-flow and high-flow-rate pipe fracture type karst gushing water blockage method. The method comprises the following steps: multiple non-continuous grouting curtains are constructed in a low-resistance rich water area; a flow control pulp stop pad is arranged in a water gushing port of a karst pipe for controlling the flow of a water outlet through a drainage pipe with a valve; the porous segmented united grouting is adopted; multiple holes are segmented to high-connectivity drilling holes of different non-continuous curtains; and the united grouting is synchronous grouting of near-end holes and far-end holes. Multiple sections of compact curtain walls are constructed to stop a fracture water passing channel; the flow control pulp stop pad is arranged in the water gushing port for reducing the flow rate of water currents in the karst pipe; and the pulp reservation quantity and the filling distance are increased, so that the pulp is effectively condensed to block the pipe. The technology system of non-continuous curtains+flow control pulp stop pad+key channel exploration and grouting finally realizes the curtain closure and the karst pipe blockage, thoroughly blocks the karst open sunken mining water gushing, guarantees no streaming phenomenon of karst water, and can effectively save the cost.

Description

technical field [0001] The invention discloses a comprehensive technical system suitable for large-flow water inrush control in depression mining mines in karst areas, specifically relates to an open-pit depression mining mine, which has the characteristics of strong underground karst development and wide runoff area, and particularly relates to a comprehensive Low-cost technology to block runoff areas and completely seal karst water gushes. Background technique [0002] At present, the methods of controlling karst water hazards in depression mining mines are mainly dredging and decompression drainage and full curtain grouting closure. The surrounding flow field is destroyed, which leads to frequent ground subsidence, destroys the geological environment around the mine, and brings serious geological environmental disasters; the consumption of water blocking materials for full-curtain grouting is huge and the cost is high. [0003] In Southwest my country, especially in Guan...

AI Technical Summary

Problems solved by technology

[0002] At present, the methods of controlling karst water hazards in depression mining mines are mainly dredging and decompression drainage and full curtain grouting closure. The surrounding flow field has been affected, leading to frequent ground subsidence, destroying the geological environment around the mine, and causing serious geological environmental disasters; the consumption of water blocking materials for full-curtain grouting is huge and the cost is high

Images