Two blocks, one injection and one row of hole sealers are used for coal seam borehole plugging, such as gas drainage plugging for coal seam pressure measurement drilling, rock lane upward drilling, downward drilling, local coal seam drilling, etc. . Working principle: Connect the grouting tube of the product to the grouting pump, and seal the slurry from the grouting pump into the grouting tube and the expansion bag, the bag
Two blocks, one injection and one row of hole sealers are used for coal seam borehole plugging, such as gas drainage plugging for coal seam pressure measurement drilling, rock lane upward drilling, downward drilling, local coal seam drilling, etc. .
The grouting tube of the product is connected to the grouting pump, and the sealing slurry enters the grouting tube and the expansion bladder by the grouting pump. The bladder begins to expand and the outer wall is sealed with the coal hole. The built-in blast valve 0.8Mpa blasts and seals the hole. The slurry plugs the coal holes and intermediate cracks, and connects the gas drainage pipe through a gas drainage pipe for gas drainage.
1. Sealing automation. The hole sealer is fed into the hole, and only the grouting can be started to realize the automatic hole sealing of the whole hole, which greatly reduces the labor intensity and improves the work efficiency.
2. Active support. After the grouting, the pouch can effectively support the drilling, so that a high stress area is formed around the hole in the sealing section, and continuous cracks can be created after sealing, forming a leak channel.
3. Pressure grouting. Pressurized grouting pressure reaches 1.6 trillion Torr, which can make the hydraulic pressure of the grout enter the borehole wall cracks, seal the cracks around the borehole, reduce its permeability, and play a role in blocking the initial leaking channel.
4. Adjustable length. The length of the hole sealer can be customized according to the actual drilling length downhole.
5. Advanced technology. "Two plugs, one injection and one row" with pressure grouting sealing technology, suitable for high water drilling and ordinary drilling, advanced technology, good sealing effect.