In the process of tunnel construction, wet spraying manipulator spraying concrete is a key process. This process not only requires operators to master complex mechanical operations, but also requires strict compliance with safety regulations. This article will introduce in detail the operation steps and relevant precautions of tunnel wet spraying manipulator spraying concrete operation, helping construction personnel to complete the operation more efficiently and safely.

   Operation steps

   I. Preparation work

   Before the formal spraying concrete construction, a series of preparations need to be carried out:

   ① Open the auxiliary wind of the quick-setting agent: First, open the auxiliary wind of the quick-setting agent, which helps to ensure that the concrete solidifies quickly and enhances the support effect.

   ② Slowly open the main air valve: Next, slowly open the main air valve to ensure stable delivery of concrete during the spraying process.

   ③ Start the equipment: Start the quick-setting agent metering pump, main motor and vibrator to ensure that all components are operating normally and prepare for the spraying concrete operation.

   ④ Add materials: Add concrete materials to the hopper to ensure sufficient material supply during the spraying process.

  II. Spraying concrete operation

   The operator needs to stand in a safe position where the initial support has been completed, and control the nozzle through a wireless remote control device to spray concrete. The specific steps are as follows:

   ① Determine the spraying area: According to the construction design drawings, determine the specific area to be sprayed.

   ② Adjust the spraying parameters: According to actual needs, adjust the spraying pressure, the amount of accelerator and other parameters to ensure the spraying effect.

   ③ Control the nozzle: Use the wireless remote control device to accurately control the angle and position of the nozzle to spray concrete evenly.

   ④ Observe the spraying effect: Observe the spraying effect in real time to ensure that the concrete is evenly distributed and reaches the designed thickness.

   III. Safety precautions

   ① Standing safety: The operator must stand in a safe position where the initial support has been completed to avoid injuries caused by accidents such as tunnel collapse.

   ② Equipment inspection: Before each operation, the various components of the wet spraying manipulator must be checked to ensure that the equipment is operating normally.

   ③ Emergency treatment: The operator must be familiar with the emergency treatment measures of the equipment to ensure that it can respond in time when a failure occurs.

   ④ Personal protection: Operators need to wear protective equipment such as safety helmets, protective glasses, gloves, etc. to ensure their own safety.

   Wet spraying manipulator spraying concrete operation is an important part of tunnel construction. Operators must strictly follow the operating procedures and pay attention to safety at all times. The key points and safety precautions introduced in this article can help construction workers improve construction efficiency and ensure construction quality and safety.