How to prevent water inrush and water penetration

In the coal mine production, with the advance of working face after blasting vibration or roof caving, rock up and down the destruction, there will be a part of the ground rainwater and groundwater flowing into the underground, which normally flows out of the water, the water pump it is discharged to the ground It will not cause disasters. However, sometimes, because the hydrogeological situation is unknown, or the negligence in the work, the accumulated water in the old lane or the old kiln will suddenly emerge; the flood on the ground will be poured downhole; the roadway will be connected with the extra-large aquifer; the river on the roof and the ground The collapse of lakes and reservoirs, as well as the inundation of mines, caused serious disasters. Water pollution prevention is to prevent these accidents that threaten the safety of mines.

Prevention and control of water damage is an important part of coal mine safety work. In addition to carefully designing the location of the wellhead when designing the mine and arranging the roadway, coal mining under the rivers and lakes in the water-storage area and the ground should leave a safety coal pillar, and also organize the strength to repair the drainage ditch and build waterproof before the rain show. Dikes, filling ground cracks to reduce ground rainwater leakage into the well. It is especially important that when the roadway is close to the suspected water accumulation area, it is necessary to take water exploration measures to explore the first. After the water accumulation area has been proved, release the water and then dig it in; or modify the design to change the direction of the tunnel and avoid the danger zone. Never blindly understand the situation, just blindly dig.

Before the water is permeable, there are signs, such as the pressure on the top and bottom of the work surface, the water in the head, the water in the coal, the sound of water in the coal seam, the water flowing out of the drill hole, and so on. Every underground worker must know these signs of water permeability. If these signs are found, they will automatically stop working and report to the mine dispatching room.

If there is a water permeable accident in the underground, it is necessary to use the quickest method to notify all nearby personnel to retreat quickly and calmly to a high place. After permeable, sometimes a large amount of harmful gases are released from the water accumulation area, so pay special attention to this.

Butt Weld Tee

Butt weld tee

Why is it called butt weld tee? Because there are three outlets. All the outside diameters are same, it should be equal tee. For those tee fittings whose run pipes are larger than branch pipe, it is

reducing tee. In addition, there are split tee, barred tee, and lateral tee 45degree.

Butt weld tee

Specifications for butt weld tee:

1. Size:1/2``-24``(Seamless Pipe fittings) 26``-96``

2. Wall thickness:SCH5-XXS

3. Material:carbon steel A234 WPB, alloy steel, stainless steel

4. Standard:ASME B16.9, ASME B16.25, MSS SP75, EN10253 etc.

ANSI B16.9 pipe tee

If customer have special requirements on sizes of each part, these fittings shall be customized.Butt weld tees are widely in used many fields, like architecture, electric power, petroleum,chemical industry etc.

Split Tee,Side Outlet Tee,Galvanized Pipe Tee,Lateral Tee 45 Degree

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