GPS1 Active Rockfall Barriers: Protecting Slopes and Rocks

The GPS1 Active Rockfall Barriers commonly protect slopes in engineering by using steel wire rope nets or steel grid nets. These flexible nets cover and wrap around slopes or dangerous rocks that need protection. Their main function is to limit weathering, peeling, or destruction of slope soil and rock and control rockfalls within a specific area.

The net type for the GPS1 Active Rockfall Barriers is DO/08/300. The design includes supporting ropes with a 16mm diameter, placed above and below. Workers sew the steel wire rope net to these supporting ropes using an 8mm steel wire rope as the sewing rope. At each intersection, they secure each piece of steel wire rope net with stainless steel buckles, alloy buckles, and other materials. This setup ensures durability and effectiveness in preventing rockfalls.

This GPS1 Active Rockfall Barriers uses high-strength hot-dip galvanized steel wire ropes and steel wire nets, and undergoes anticorrosive treatment of no less than Grade AB, with an anticorrosive life generally ranging from 30 to 50 years depending on environmental conditions. The GPS1 Active Rockfall Barriers is an early type of slope protection net system, which is relatively easy and flexible to install, and its usage has decreased significantly compared to the GPS2 active protection net.

Overall, the GPS1 Active Rockfall Barriers is an effective measure for slope reinforcement and rockfall protection, offering high durability and corrosion resistance.

Specifications GPS1 Active Rockfall Barriers

Here’s how to set up GPS1 Active Rockfall Barriers, explained in simple steps

1. Clear the Area: Remove all loose soil and falling rocks from the slope protection area.
2. Measure for Anchors: Start measuring from the middle at the bottom. Measure upwards and sideways to locate anchor hole positions. At each spot, dig a 20cm wide and 15cm deep pit matching the anchor loop’s depth.
3. Drill Holes: Drill each hole 5 cm deeper than the anchor’s length, at least 45 mm wide. If equipment limits you, drill two smaller holes per anchor, each 35 mm wide. Arrange them in a V-shape with angles between 150 and 320 degrees for equal hold strength.
4. Insert Anchors with Grout: Use strong cement mortar (M20 grade or higher) with a 1:1 to 1:1.2 lime-to-sand ratio and a 0.45 to 0.50 water-to-cement ratio. Use type 425 cement and sand finer than 3mm. Completely fill the holes with this mix and let it set for three days.
5. Install Ropes: Set up ropes along the length and width, pull them tight, and secure each end to the anchor loops with two rope clips.
6. Set Up the Grid Nets: Hang the grid nets from top to bottom. Ensure each net overlaps the next by at least 5cm. Sew the nets together and tie them to the ropes using 1.2 mm iron wire every meter.
7. Install the Barriers: Lay the GPS1 Active Rockfall Barriers from top to bottom. Use a 33.5m long, 8 mm thick steel wire rope to sew each net to the surrounding support ropes and pre-tension it. Fix the ends of each sewing rope with two rope clips.