Grouting stopping sealing and blocking device and grouting anchor cable hole sealing grouting stopping method
A technology of plugging device and grouting anchor cable, which is applied in the directions of bolt installation, sealing/isolation, earth drilling and mining, etc. More reliable blocking effect, support strength improvement, strength improvement effect
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Embodiment 1
[0036] A specific embodiment of the present invention, such as figure 1 As shown, a kind of anti-slurry plugging device is disclosed, comprising foaming agent nozzle 5 and foaming agent injection pipe 7, one end of foaming agent injection pipe 7 is connected to foaming agent nozzle 5, and the other end is connected to foaming agent storage tank 8 connections; foaming agent nozzle 5 and foaming agent injection pipe 7 can be sleeved on the grouting anchor cable 4, and can move in the borehole along the grouting anchor cable 4; The solidified foam formed by the foaming agent can contact the hole wall to complete the grout blocking. Preferably, the foaming agent nozzle 5 and the foaming agent injection pipe 7 are both inner and outer double-tube structures coaxially arranged, the cross-section of the inner and outer double-tube structure is circular, and the inner diameter of the double-tube structure is larger than that of the grouting anchor cable 4. Diameter, the annular space...
Embodiment 2
[0046] Yet another specific embodiment of the present invention discloses a method for plugging holes and grouting with grouting anchor cables, using the grouting blocking device in the first embodiment to seal holes and stop grouting, which specifically includes the following steps:
[0047] Step 1: Determine the blocking position according to the surrounding rock conditions of the roadway.
[0048] Construction of grouting anchor cable drilling, observation and analysis of the loose ring of the surrounding rock of the roadway through the drilling peeping instrument, the height of the broken surrounding rock 6 area in the shallow part of the surrounding rock is obtained, and then the installation height of the grouting blocking structure 11 is determined, and the polyurethane foaming The height of the plugging hole structure formed by the annular space between the grouting anchor cable 4 and the borehole wall formed by filling with the agent, such as Figure 5 shown.
[0049...
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