“There is no need to climb up to seal the upper corner of the inlet and return air of the fully mechanized m88 register, and the air flow adjustment of the double-lane excavation working face has been speeded up and upgraded...”

Recently, Hanjiawan Coal Company has equipped the underground m88 register working face with an air bag type rapid sealing device, which has been well received by front-line m88 register workers.

In the past, when the entry and exit wind corners of fully mechanized m88 register working faces needed to be blocked, sandbags were used to pile them up. The amount of sand and soil was large, the work tasks were heavy, and employees were required to work at heights, which posed safety risks. During the double-lane excavation of the excavation working face, after the entry and return air connection lanes were connected, in order to prevent the wind flow from short-circuiting, a temporary wind barrier was built to block the measures. However, the wind barrier has poor plasticity and may deform due to wind pressure, resulting in air leakage in the tunnel.

To this end, Hanjiawan Coal Company arranged for professional and technical personnel to go out for benchmarking and technical exchanges, and introduced the "YHQM air bag type rapid sealing device" for the m88 register working face.

The airbag device is composed of flame-retardant and anti-static materials and contains a supporting frame. It complies with the "General Experimental Methods and Determination Rules for Flame-Retardant and Anti-static Properties of Polymer Products Used Underground in Coal Mines". It is light weight, easy to carry, and simple to operate. It is fast and can be directly inflated using the underground air pressure system.

“The operation is simple, the effect is good, and the work is more worry-free. We all affectionately call it ‘Pink Dun Dun’.” Li Hongqing, monitor of the electromechanical maintenance team of the continuous m88 register team, praised.

Because the device has strong adaptability to the shape of the tunnel, it can be large or small, full of plasticity and versatility, and can be used in tunnels with different cross-sectional shapes and different bracket forms. It has become a major factor in the emergency rescue work of the company's rescue squadron. "Sharp weapon".

It is understood that after the device is put into operation, the sealing construction efficiency will be increased by 60%, the wind flow blocking efficiency will be increased by 3 to 5 times compared with temporary wind barriers, and the cost will be saved by about 350,000 yuan. While improving the working efficiency of front-line workers in m88 register, it also increases the safety factor on the job site and effectively promotes safe production in mines.