1 Concrete mixer truck arrives on-site, a pump truck takes over, a flexible pump hose is inserted into the bagging opening, the bags are tied and secured, then灌浆 and quality inspection is conducted.

2. Concrete filling pressure control and concrete filling疏导 speed control at 10~15m. The exit pressure is recommended to be between 0.2~0.3MPa. If the concrete around the filling mouth has lost sufficient fluidity, which is often caused by a prolonged stoppage during the filling process, the following measures can be taken:

①By using feet to carve a groove along the distance from the tread, a passage is formed. Then, fill the bag with mortar. Alternatively, use the filling port above.

If the form bag has been sealed, an additional filling port can be opened at the upper edge of the unfilled section for refilling. The port should be located in a concealed side area to maintain the overall aesthetics.

The concrete filling sequence is carried out from bottom to top, filling each row and compartment individually (with 3 filling ports per row). The filling order for each row is: starting from one side of the bag and filling towards the other side, mouth by mouth. This filling sequence, where multiple bags are filled in an alternating manner, has the following advantages compared to filling a single bag continuously before moving to the next one:

A few differences in the amount of concrete filled into the bags, resulting in minimal length shrinkage due to inflation, which is convenient for...

Master the placement of the baggy shoulder position.

2) Reduced the rate of concrete surface rise within the form bag, thereby decreasing the pressure exerted on the form bag.

3) First fill the inflation port on one side of the form bag, which can prevent lateral shrinkage of the form bag from causing displacement in that direction, thereby ensuring the seam is tight.

After filling is complete at a row of filling ports, the anchor ropes at the shoulder end should be appropriately loosened to prevent the form bag from becoming overly tight due to expansion and contraction, which could cause difficulty in filling and even damage the form bag. After a filling port is completed, remove the concrete from the filling sock, stuff the sock into the filling port, and sew the port shut. Then, ensure the form bag's surface is smooth and aesthetically pleasing. For underwater filling ports, simply tie and seal the sock can suffice. Overall, the technical key to concrete filling is to achieve good fluidity and workability of the concrete, while ensuring the continuous progression of the filling operation.

To prevent blockage incidents, ①regularly inspect the concrete gradation and slump; prevent overly coarse aggregates from entering and clogging the pipelines; prevent

Pumping air into pipes can lead to blockages or gas explosions; refilling should be continuous, and shutdown times should generally not exceed 20 minutes.

Operators of pumping and filling operations should maintain constant communication and close coordination. Stop the machine promptly after filling is complete to prevent the formation or bursting of bulges. In case of swelling, stop the machine immediately, identify the cause, and address the issue.

③Regularly check the stability of the mold bag fixation to prevent slippage during the filling process. After filling one section, move the equipment and proceed with the filling of the next section following the aforementioned steps. Pay special attention to the connection and tightness between the two sections.