3 m water-retaining height · 90 m total length · Central China
| Project name | Daping |
|---|---|
| Project location | Daping, Xiushui, Jiangxi, China |
| Region | Central China |
| Dam type | Rubber dam — fabric-reinforced inflatable dam bag |
| Dam design | Baoli (in-house design & manufacture) |
| Water-retaining height | 3 m |
| Spans / openings | On request |
| Max single span | On request |
| Total length | 90 m |
| Application | Mountain river harnessing · Flood defence · Eco-protection |
| Dam bag series | JBD series, 0.5–6 m height range |
| Drawings & test reports | Available on request |
A rubber dam for mountainous river harnessing and flood defence. Delivers water storage, eco-protection and scenic improvement, with modular bays allowing independent inflation and deflation for water-level regulation — a representative mountain-valley water-conservancy project in Jiangxi.
Water-retaining height
Total dam length
Spans / openings
Project region
The Xiushui headwaters rise steeply in the Mufu mountains. Rain that falls in the hills reaches the valley site within hours: the river switches from a shallow stream to a charging flood with little warning, and any in-channel structure must survive debris carried down with it.
At 90 m, this is deliberately a compact single-line structure on a short, well-founded sill. The 3 m bag uses a multi-layer fabric build matched to its height class, anchored with a continuous clamp line so the load spreads evenly along the sill rather than concentrating at the abutments. In flood the dam simply deflates: nothing stands proud of the riverbed to trap boulders or logs, and the bag itself — fabric-reinforced and shock-tolerant — rides out impacts that would wreck a rigid gate leaf on the same site.
The choice of filling medium decides the anchorage. An air-filled bag carries a single anchor line on the upstream edge, because the pressurised bag presses down on the slab and seals itself against the flow. A water-filled bag needs two lines, upstream and downstream, since the weight of the water inside has to be held on both faces. On a narrow mountain site the single-line detail is quicker to place and leaves more of the slab free for the apron and the stilling arrangements.
Mountain rivers give little warning. The catchment is steep, the flood arrives as a short sharp rise, and floating stone and timber come with it. A deflatable bag answers this by getting out of the way: the outlet is opened, the bag lies flat on the slab, and the full channel section is available again within a short time, with no gate leaf or pier to catch debris. The same fabric that tolerates impact is what allows a dam to be used on a channel that would damage rigid gates.
This reference project used our rubber dam system — fabric-reinforced dam bag with bolt or wedge anchoring, water-filled or air-filled operation.
Considering an air shield dam instead? Compare the two systems before you specify.
We can share detailed drawings, material test reports and owner contacts for projects comparable to yours.
Tell us your river width, required water-retaining height and site conditions — we will send comparable project records and a preliminary configuration.
