The ground surfacing of the exit buffer zone for rainbow slides is a critical component for ensuring sliding safety and preventing impact injuries, which must fully comply with relevant design and construction specifications.

In terms of spatial dimensions, sufficient buffer clearance shall be reserved at the slide exit. A horizontal buffer section of no less than 1.2 meters in length is required at the end of standard small-sized slides, while large-scale rainbow slide complexes demand a buffer zone extending 20 meters, plus an additional 5-meter terminal transition area. For gradient design, a gentle deceleration slope of approximately 5 degrees shall be constructed at the far end of the buffer zone to dissipate sliding momentum gradually and bring riders to a smooth stop.

Regarding surfacing materials and thickness, the ground must be covered with elastic surfacing featuring superior shock absorption, such as EPDM rubber mats or fine sand beds. For standard children’s amusement equipment, EPDM rubber mats with a minimum thickness of 15 cm and Shore A hardness maintained at 60±5A are mandatory to effectively cushion impact forces from falls. For large rainbow slides, the exit buffer section shall be paved with 50 mm thick EPDM rubber mats.

Furthermore, the surfacing installation shall prioritize anti-slip and drainage performance, maintaining a friction coefficient of no less than 0.3 even in rainy or snowy conditions to prevent loss of sliding control. The entire paved area shall remain flat and free of sharp protrusions. Clear safety warning signs shall also be installed around the perimeter to deliver all-round protection for visitors.