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Bookend Rubber Dam - Reduce Vibration Effectively

Bookend rubber dam, also named as spine type rubber dam, has obvious fins on the dam body to form a rising angle when the dam is inflated. It is made of high strength canvas as the reinforced framework and synthetic rubber fixed to a reinforced concrete foundation using clamping plates and anchor bolts. In dry seasons, the rubber dam is inflated by air or water to retain water for industrial, agricultural and living water demands; in rainy seasons, the air or water in the sealed bag can be deflated out to release floodwater from river course. Bookend rubber dam heightens overflow's water head and eliminates vacuum underneath the dam to reduce the vibration and abrasion. It is usually used to retain water, agricultural irrigation, generate electricity, control flood, beautify environment, etc.

A black bookend rubber dam is wet on the concrete slope.
BRD-1: Bookend rubber dam is resistant to vibration.
A blue inclined bookend rubber dam is in the no water river.
BRD-2: Bookend rubber dam is resistant to abrasion.
A green bookend rubber dam is in the river which water level is low.
BRD-3: Bookend rubber dam is resistant to dirt.
A black bookend rubber dam is in front of the bridge to retain water.
BRD-4: Bookend rubber dam is resistant to sediment.

Specification

  • Material structure: one cloth two rubber, two clothes three rubber, three clothes four rubber, etc.
  • Color: blue, black, red, gray, purple, etc.
  • Medium in dam: air or water.
  • According to installation method:
    • Single anchor.
    • Double anchor (pillow-like dam and inclined dam).
  • According to anchored method:
    • Bolt anchored.
    • Wedge anchored.
  • Customization can be available.
Physical and mechanical properties of bookend rubber dam
Item Unit Outer layer Middle layer, inner layer Cover rubber sheet
Tensile strength at break MPa 14 12 6
Elongation at break % 400 400 250
Permanent deformation at break % 30 30 35
Hardness (shore A) 55-65 50-60 55-65
Brittleness temperature °C -30 -30 -30
Hot water aging (100 °C × 96 h) Tensile strength at break MPa 12 10 5
Elongation at break % 300 300 200
Hot water aging (70 °C × 96 h) Tensile strength at break MPa 12 10 5
Elongation at break % 300 300 200
Volume expansion ratio % 15 15 15
Ozone aging: 10000 pphm, temperature 40 °C, stretching 20%, no cracking min 120 120 100
Wear loss (akron) cm3/1.61 km 1.0 1.0 1.2
Flexibility, no cracking Ten thousand times 20 20 20
Specification of bookend rubber dam
Code Height (m) Inner pressure / outer pressure Perimeter (m) Bottom gaskets width (m) Coefficient (k)
Air inflatable bookend rubber dam
BRDS-1 1.0 1.60 3.19 1.30 > 6
BRDS-2 1.0 1.10 3.45 0.57 > 8
BRDS-3 1.0 1.00 2.88 0.60 > 8
BRDS-4 1.5 1.50 4.88 2.15 > 6
BRDS-5 1.5 1.10 5.17 0.85 > 8
BRDS-6 1.5 1.00 4.32 0.90 > 8
BRDS-7 2.0 1.50 6.51 2.87 > 6
BRDS-8 2.0 1.00 5.76 1.20 > 8
BRDS-9 2.0 0.90 7.05 1.28 > 8
BRDS-10 2.5 1.40 8.40 4.04 > 6
BRDS-11 2.5 1.00 7.20 1.50 > 8
BRDS-12 2.5 0.90 7.22 1.60 > 8
BRDS-13 2.5 0.75 7.27 1.81 > 8
BRDS-14 3.0 1.35 10.30 5.20 > 6
BRDS-15 3.0 0.90 8.66 1.92 > 8
BRDS-16 3.0 0.75 8.73 2.17 > 8
BRDS-17 3.5 1.30 12.35 6.58 > 6
BRDS-18 3.5 0.90 10.11 2.24 > 8
BRDS-19 3.5 0.75 10.18 2.53 > 6
BRDS-20 4.0 1.25 14.62 8.25 > 6
BRDS-21 4.0 0.90 11.55 2.56 > 8
BRDS-22 4.0 0.70 11.69 3.04 > 6
BRDS-23 4.5 1.25 16.45 9.28 > 6
BRDS-24 4.5 0.70 13.15 3.34 > 6
BRDS-25 5.0 1.20 19.18 11.53 > 8
BRDS-26 5.0 0.70 14.61 3.81 > 6
BRDS-27 5.5 1.20 21.10 12.68 > 8
BRDS-28 6.0 1.20 23.02 13.83 > 8
Water inflatable bookend rubber dam
BRDS-29 1.0 1.6 3.70 1.8 > 8
BRDS-30 1.5 1.55 5.40 2.05 > 8
BRDS-31 2.0 1.52 7.10 3.40 > 8
BRDS-32 2.5 1.46 8.80 4.36 > 8
BRDS-33 3.0 1.4 10.70 5.45 > 8
BRDS-34 3.5 1.35 12.70 6.8 > 8
BRDS-35 4.0 1.32 14.65 7.96 > 8
BRDS-36 4.5 1.3 16.50 9.15 > 8
BRDS-37 5.0 1.25 19.08 11.1 > 8
BRDS-38 5.5 1.25 20.90 12.13 > 8
BRDS-39 6.0 1.25 22.80 13.27 > 8
The overflow is flow to downstream by the center of bookend rubber dam.
BRD-5: Fin on the bookend rubber dam can reduce the vibration of the dam bag.
Water is incited by flip bucket, upstream and downstream have water.
BRD-6: Bookend rubber dam has smooth surface with spines.
Water of upstream flow to downstream passed bookend rubber dam.
BRD-7: Waterfall through bookend rubber dam is beautiful.
Bookend rubber dam has overflow and there are many green grass on the shore.
BRD-8: Bookend rubber dam is controlled by automatic control system.

Feature

  • It can be resistant to vibration, abrasion, dirt, sediment, sedimentation, sunlight, heat, ozone.
  • It has smooth surface with spines, can eliminate vacuum underneath the dam, can create a beautiful scene of waterfall.
  • Automatic inflation and deflation system provides the dam excellent control of height and air pressure.
  • Vulcanization molding one time, increase the lateral tension of dam bag.
  • Long rubber dam does not need piers to firm which is not like concrete dam.
  • The flip bucket can separate various sharp substances from dam body to protect rubber dam and reduce dam body attrition.
  • In frost area, air inflatable rubber dam has no problem, water inflatable rubber dam is not suitable.
  • Air inflatable rubber dam asks for high demand on inflatable proof; water inflatable rubber dam asks for lower requirement on this aspect.
  • Incline rubber dam produces and installs conveniently which economizes the material and can solve collapse problem of pillow rubber dam.
  • In the process of installation, incline rubber dam can achieve mechanization, economize labor resource.
  • Under the same material of dam bag, incline rubber dam is higher than pillow rubber dam on safety factor.
  • It has short construction time, installation only need 3 to 15 days. It can be installed on new or existing foundation.
  • Easy to install with the help of clamping plates and anchor bolts.
  • Project cost is lower than conventional sluice dam: saving 30% to 70% cement, steel and wood comparing to concrete dam.
  • It has long service life, simple maintenance.
Bookend rubber dam has overflow and there is a mountain on the surrounding.
BRD-9: Flip bucket of bookend rubber dam can separate various sharp substances from dam body.
Bookend rubber dam has overflow and there is a control room on the shore.
BRD-10: Bookend rubber dam is easy to install.

Application

  • Water retention.
  • Agricultural irrigation.
  • Electricity generating.
  • Reservoir capacity enlargement.
  • Flood control.
  • Beautify environment.
  • Anti-tide.
  • Urban landscaping.
  • Create pondage.
  • Raise existing dams.
  • Erosion control.
  • Groundwater recharge.
A curved black bookend rubber dam has overflow and there are many trees far away.
BRD-11: Bookend rubber dam is fixed by clamping plates and anchor bolts.
Waterfall is incited by flip bucket and there are many trees far away.
BRD-12: Bookend rubber dam can save many materials than conventional sluice dam.
A black bookend rubber dam is on the top of a slope and there are several piers above the dam.
BRD-13: Bookend rubber dam can be used to retain water.
Water is flowing through long span bookend rubber dam and there are several piers above the dam.
BRD-14: Bookend rubber dam can beautify the environment.

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Zaoqiang Dacheng Rubber Co., Ltd.
E-mail: sales@inflatabledam.com

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