Before storing an air-supported structure used for an excavation pit, it should be inspected and organized based on its material type, current condition, and future deployment plans. Proper handling is essential to prevent damage-such as surface scratches, coating degradation, seam separation, or premature material aging-that could result from improper storage. Prior to dismantling, the structure must be depressurized gradually in accordance with the construction plan; ensure all pressure has been fully released and the power supply to all associated equipment has been disconnected before beginning the removal process. During dismantling, avoid using sharp tools near the membrane surface, and do not drag the material across the ground, as contact with sand, gravel, metal components, or other hard objects can cause scratches and tears. Once removed, the membrane should be cleaned to eliminate any adhering soil, dust, oil, or other debris, using cleaning methods compatible with the specific membrane material. After cleaning, the material must be thoroughly dried; folding or storing it while still damp can lead to mold growth, unpleasant odors, or localized deterioration of the coating over time. For large-scale air-supported structures, follow the manufacturer's recommended folding or rolling procedures to minimize irregular creases and localized compression-paying particular attention to protecting heat-welded seams, reinforced sections, and edge connection zones. Steel cables, anchors, connecting plates, air ducts, and other accessories should be organized separately from the membrane, then categorized, labeled, and inventoried. Check these components for signs of rust, deformation, wear, or missing parts. If any damage, seam separation, or significant material aging is detected, the affected sections should be marked and set aside for repair; they must not be reused in a subsequent installation without prior inspection and remediation.
The storage environment for the air-supported structure should be dry, well-ventilated, and clean. It should also be protected from prolonged direct sunlight, excessive heat, exposure to rain, and drastic temperature fluctuations. Membrane materials should be placed on flat, clean racks or pallets, ensuring they do not come into direct contact with bare soil, standing water, or environments where corrosive substances might be present. Storage areas must be kept away from welding zones, open flames, heat sources, sharp objects, and chemical solvents to prevent the membrane surface from sustaining burns, punctures, or chemical damage. For air-supported membrane structures that will remain unused for extended periods, heavy objects should not be placed on top of the membrane, and rolls of membrane material should not be stacked too high; this prevents the bottom layers from becoming deformed under pressure or suffering damage to their seams. Equipment such as blowers, electrical control cabinets, and pressure sensors should be stored in accordance with their respective product manuals, with appropriate measures taken to ensure protection against moisture, dust, and rust. Electrical equipment should be inspected by qualified personnel before being placed into storage. During the storage period, it is advisable to maintain an inventory log-recording the membrane material's identification number, usage history, maintenance records, storage date, and the quantity of accessories-and to conduct regular inspections for issues such as moisture, mold, coating adhesion, aging, or corrosion of metal components. Before the membrane is put back into service, a thorough inspection of its appearance, seam integrity, anchorage connections, blower operation, and control systems must be performed, followed by installation and commissioning in accordance with project requirements. It should be noted that composite membrane materials and connection techniques may vary by manufacturer; therefore, specific guidelines regarding cleaning agents, folding methods, storage temperatures, and stacking requirements must be followed as per the product's technical documentation. Through standardized dismantling, organized storage, and regular inspections, the turnover and utilization rate of air-supported membrane structures for excavation pits can be maximized, while reducing the need for repeat procurement and lowering maintenance costs.