How does a hydrodynamic automatic flood barrier work without electricity?

The barrier panel is housed flush inside a recessed foundation chamber. Rising surface water flows into the chamber and generates buoyancy plus hydrostatic pressure, which lifts and locks the panel into the retaining position. No power supply, sensors, pumps or human operation are required, so the gate still works during a blackout — the exact moment most urban floods occur.

What retaining heights and clear widths can Junli supply?

Standard hydrodynamic units cover retaining heights from 0.5 m to 2.0 m, with single clear spans up to 6 m and multi-leaf arrays for driveway or station entrances above 20 m. Light flip-up models are available for pedestrian doorways and equipment rooms.

Are the flood gates tested with real water before delivery?

Yes. Every design is validated in our own water-testing pool for lifting time, seal leakage rate and structural deflection, and typhoon-season field records from installed projects are documented. Third-party inspection reports and water-retaining test videos can be issued with each shipment.

Do you support overseas installation and after-sales service?

We provide civil-works drawings, embedded-frame templates, remote commissioning guidance, spare seal kits and English installation and maintenance manuals. Engineer dispatch for large infrastructure projects can be arranged through our global service team.

China Embedded flood barrier Hm4e-006C Manufacturer, Quotes

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China Embedded flood barrier Hm4e-006C Manufacturer, Quotes

Our advantages: 1. **Fully Automated Without Electrical Dependency**: Operates normally during power outages in extreme weather. 2. **Unmanned Operation**: Automatically rises to block water when the water level reaches the trigger point, providing 24/7 flood control with automatic adjustment of the gate's opening angle according to water level changes. 3. **Ground-Flat Storage**: Lays flat on the ground, occupying no space and allowing unimpeded pedestrian and vehicle traffic. 4. **Emergency Vehicle Passage**: In the early stage of water blocking, garage vehicles can drive over the water-blocking panels for evacuation. 5. **Modular Design**: Enables quick installation without major modifications. 6. **Anti-Collision Warning Lights**: Prevents accidental impacts by pedestrians and vehicles during flood control. 7. **Optional Remote Networking Supervision System**: Enables intelligent flood control management. 8. **Minimal Maintenance**: Only requires periodic cleaning of debris at the gate's base. 9. **Dual-Mode (Manual & Automatic) Operation**: Enhances flood control flexibility. 10. **Durable Materials**: Ensures a service life of up to 10 years.

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Product Description

Technical Specifications

Model	Water Retaining Height	Installation Mode	Installation Groove Section	Bearing Capacity
Hm4e-0006C	580	embedded installation	width 900 * depth 50	heavy duty (small and medium sized motor vehicles, pedestrian)

Grade	Mark	Bearing Capacity (KN)	Applicable Occasions
Heavy duty	C	125	underground parking lot, car parking lot, residential quarter, back street lane and other areas where only allow non-fast driving zone for small and medium-sized motor vehicles (≤ 20km / h).

Underground Engineering Flood Analysis

Peaceful Time Risk Factors:

Reason (1): Extreme weather events
Reason (2): City tube explosion and infrastructure failure

Wartime Risk Factors:

Reason (3): "Flood as weapon" and "Flood as army" tactical threats

Product Background

(1) Extreme rainstorm in China: For living buildings, since 2008, 62% of cities have experienced flooding in China. The rate is rising and expanding to traditionally dry areas with little rainfall, such as Xi'an, Shenyang, Urumqi, and other northern cities.
(2) Frequent Extreme Weather Worldwide: Global climate shifts leading to unpredictable urban flooding hazards.
(3) Municipal Infrastructure Aging: Water tube aging and sudden bursting events causing severe flash floods in urban areas.

Installation Overview

Embedded Installation: The top of the barrier is aligned with the ground level, requiring a precise groove opening for proper placement and seamless integration.

Embedded Installation

Automatic Flood Barrier Installation

Frequently Asked Questions (FAQ)

What is the water retaining height of model Hm4e-0006C?

The water retaining height for model Hm4e-0006C is 580 mm.

What is the bearing capacity of Grade C flood barriers?

Grade C heavy-duty flood barriers feature a load-bearing capacity of 125 KN, suitable for small to medium-sized motor vehicles and pedestrians.

Where can heavy-duty automatic flood barriers be installed?

They are ideal for underground parking lots, car parks, residential quarters, back street lanes, and non-fast driving zones with vehicle speeds ≤ 20km/h.

How is the embedded flood barrier installed on the ground?

Embedded installation requires a groove opening (width 900 * depth 50 for model Hm4e-0006C) so that the top of the barrier aligns perfectly with the ground level.

Why is underground flood protection increasingly important?

Due to rising extreme weather events globally, expanding urban flood risks in dry regions (affecting over 62% of Chinese cities), and aging municipal water pipelines prone to bursting.