Water permeable treatment measures

In the joy of happiness, we should ponder how to avoid the recurrence of such accidents. What are the symptoms before the flooding accident? How to save yourself after the disaster? How should the rescue work be carried out? Through this incident, we should learn Still a lot.

1, signs

The permeable accident refers to the uncontrolled flow of surface water and groundwater into the working face of the mine through various channels such as fissures, faults and subsidence areas during the construction and production process, resulting in casualties or mines. Flood accidents caused by property damage are also commonly referred to as permeable.

Statistics on serious water-permeable accidents in recent years, the number of water-permeable accidents caused by old-fashioned water and the death toll accounted for more than 60%.

Are there any signs of flooding accident? Former coal layer or permeable rock, usually there are some signs.

The above symptoms are not all appearing before each permeable period. Sometimes one or several types may be found, and in some cases, they may not even appear. Therefore, we must be vigilant, watch closely, and analyze carefully. This is of vital importance for timely prevention and avoidance measures.

2, self-help

When a water leakage accident occurs suddenly in the underground, the on-site personnel should immediately take the material as soon as possible to quickly block the water-permeable point, prevent the accident from expanding, and report the mine dispatch in time. If the situation is urgent and the water is fierce, personnel should retreat from the bottom up according to the evacuation route specified in the operating regulations. Do not enter the single lane below the permeable level.

When the on-site personnel are trapped by the water, they should take the following self-rescue measures and wait for the rescue.

3, rescue

1) After the flooding accident occurs, the mine emergency rescue headquarters shall take effective measures to ensure the normal operation of the main drainage pump. At the same time, a decision should be made as to whether it is appropriate to close the waterproof gate.

2) After the mine has a water seepage accident, the relevant technical personnel shall quickly judge the nature of the water permeability (which of the aquifer water, the old air, the fault water or the surface water), and ask the accident site personnel and the investigation results according to the underground. To understand and determine the permeable location, analyze and estimate the static water level and water accumulation, and measure the water supply, the amount of recharge water and the water source of the affected area, and then report to the headquarters to take appropriate rescue measures to ensure the drainage equipment needed for the rescue operation. . The drainage equipment must have working and spare pumps, water pipes and suitable distribution equipment.

3) When a mine encounters a water seepage accident, the main task of the rescuers is to rescue the trapped people in distress, prevent the roadway from being further flooded, and restore the ventilation of the shaft.

4) When a water leakage accident occurs in the mining face, according to the actual situation of the underground, the people at the upper and lower levels of the roadway will be rescued at the same time. When the lower horizontal roadway is in danger of being flooded, the underground personnel will be quickly evacuated to the upper level and prohibited in the single roadway. Avoiding.

5) For those trapped underground, when the location is higher than the water level after permeable, consider digging other lanes near the disaster area or use the method of drilling holes to supply fresh air according to the trapped position of the upper and lower well maps. Beverages and food; if the location is lower than the water level after permeable, it is forbidden to dig into the roadway or drill to prevent pressure relief from expanding the disaster.

6) When the mine's water permeability exceeds the drainage capacity, and there is a danger of flooding the whole mine and level, after the lower level personnel are rescued, the water can be discharged to the lower level or the goaf. If the lower level personnel have not been evacuated and the main drainage equipment is threatened by flooding, a temporary waterproof wall can be constructed by using sacks filled with clay and sand to block the pump room opening and the roadway leading to the lower level.

7) When handling the flooding accident in the mountain roadway, the mine rescue team should pay attention to the following matters:

(1) Preventing the impact of secondary permeable, stagnant water and silt;

(2) If there is no effective space for storing water and deposits under the water permeable point, the rescuer should evacuate to a safe place in time;

(3) Ensure the communication and safe exit of the personnel during the operation.

8) When organizing drainage, special attention should be paid to ventilation work to prevent the accumulation and emission of harmful gases, especially when the water level drops, a large amount of gas accumulated in the flooded roadway emerges. Always check the gas. When the gas content in the downhole air reaches 1%, stop the transmission and drainage to the underground. Strengthen the ventilation and check the harmful gases (mainly CO2\H2S) in time. When the drainage is close to the bottom yard or the diverticulum. Always check to prevent the sudden emergence of gas and other harmful gases. At this time, the person responsible for driving the water pump should be equipped with an isolated self-rescuer. The open fire source is prohibited near the wellbore and the wellhead to prevent gas explosion. If gas is found, it should be discharged in time to avoid disaster.

9) During the drainage process, ventilation should be carried out as much as possible to eliminate harmful gases, repair roadways, and clear the blockages to find the victims. When cleaning up, it is necessary to use all the space that can be piled up, dredge the roadway, and rescue the victims in distress.

10) In the process of investigation and rescue personnel, pay attention to observe the condition of the roadway to prevent roofing and falling off.

11) Rescuers must bring relevant equipment when handling flood accidents. In the lanes of people entering the distress, an isolated self-rescuer should be used. Special attention should be paid to harmful gas poisoning when handling old air.

12) Resume the work, remove the accumulated water, return to normal ventilation in the accident area, and evacuate the underground of the victims in distress, and then recover the accident from the accident mine.

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