What is a stop log structure?
by | Aug 18, 2016 | Blog. They are used at a dam to block the water at one of the gates that control flow over the dam. This allows for maintenance of the respective gate. Stop logs are about 4 feet tall and 16-20 feet wide. They are stacked in channels until the stack is above the water line.
What is a stoplog in a dam?
A stoplog is generally a temporary metal structure used to retain a volume of water. They can be deployed to carry out preventive or curative maintenance work downstream of the dam.
What are Stoplogs used for?
Stoplogs are frequently used to temporarily block flow through a spillway or canal during routine maintenance. At other times stoplogs can be used over longer periods of times, such as when a field is flooded and stoplogs are being used in smaller gates in order to control the depth of water in fields.
What is stop lock gate for dam?
A flood gate or stop gate is the cheaper equivalent of a flood lock. Only one set of gates exist, and so when the river is higher than the canal, the gates are closed and navigation ceases.
What is stop gate?
Stop Gate and Stop Plate are interchangeable terms used to identify manually lifted gates that are installed in open channels. Stop gates are normally either in or out and do not include a stem or lifting mechanism. Smaller gates or gates with a balance (equalized) head can usually be raised by hand.
What are flash boards?
: one or more boards projecting above the top of a dam to increase the depth of the water.
What do weirs do?
Weirs are fixed barriers across a river or stream that force water to flow over their tops, where the height of the water above the weir can be used to calculate flow.
Where is the world’s largest lock for ships?
Port of Antwerp
The Kieldrecht lock at the Belgium’s Port of Antwerp has been inaugurated today when H.M. King of Belgium officially opened this, now the world’s largest lock, by pressing the button to symbolically mark the inauguration.
Which canal has the most locks?
Locks as we know them today can almost all be traced back to China’s Grand Canal and its 10th Century innovations. The canal itself, at over 1,110 miles, includes 24 locks.
How do you stop a gate from opening too far?
Gate stops are an essential and inexpensive part of any installation, preventing your hinges from opening too far and causing damage to your gate or property. Padded stops are ideal for reducing the noise and vibration every time your gates open or close, and limit the irritation of nearby residents or workplaces.
What is a Flashboard riser?
Flashboard risers are traditionally used to control water flow from a channel, pond, or impoundment. These structures enable you to change the desired water level within the pond or channel by using stoplogs that are supplied in 6” increments.
How are stop log lifters used in weirs?
Stoplogs are typically long rectangular timber beams or boards that are placed on top of each other and dropped into premade slots inside a weir, gate, or channel. Present day, the process of adding and removing stoplogs is not manual, but done with hydraulic stop log lifters and hoists.
How are stoplogs used to control water level?
Stoplogs are modular in nature, giving the operator of a gated structure the ability to control the water level in a channel by adding or removing individual stoplogs. A gate may make use of one or more logs. Each log is lowered horizontally into a space or bay between two grooved piers referred to as a stop log check.
Why are Ace stoplogs used in fixed weirs?
ACE stoplogs provide a simple yet instantly effective barrier to a watercourse, making them ideal for isolation of fixed plant for maintenance, or more long-term use as a fixed weir. Using lightweight materials such as aluminium, ACE stoplogs are designed to be easy to handle and deploy, without compromising safety or durability.
What are stop logs used for in a channel?
Stop logs are used for level control in open channels. Logs are beams inserted in grooves cast in a channel wall. Aluminum is now the material of choice for stop log and slot construction.