What is a canal?

Question 1: What does the canal mean? Farmland irrigation often uses river water to introduce farmland through "ditches" opened on the ground. Canal is a man-made waterway, which is divided into main canal and branch canal. Main canals and branch canals are generally made of stone or cement.

Question 2: What is the canal for? Canal:

Interpretation of farmland irrigation is often introduced into farmland by river water through ditches opened on the ground. Canal is a man-made waterway, which is divided into main canal and branch canal. Main canals and branch canals are generally made of stone or cement.

Explain the channels of manual excavation.

The function of the canal:

Adjust and save water in space and maintain the average distribution of water resources. The flood will be stopped to prevent danger. Effectively save water resources.

Question 3: What does the canal mean? The earliest public drinking water system.

The earliest knowledge about water treatment is recorded in Sanskrit medicine and Egyptian inscriptions. The description of the device for clarifying liquids (water and wine) unearthed in Egypt can be traced back to BC 1500. Purification of water by filtration and clarification has a history of nearly a thousand years.

The earliest public drinking water system was to promote the public water supply canal in ancient Rome.

Modern public drinking water system began in Britain and Germany. 1855, john snow first studied the water pollution and epidemic diseases in London, and confirmed that water supply is the source of spreading diseases. At this time, the bacterial theory of the disease has not yet been established.

Water supply system in ancient Rome (picture)

Aqueduct is one of the water diversion tools used in ancient civilization. Ancient Rome is the most widely used civilization in the existing aqueduct. The first drinking water canal built in ancient Rome was a culvert, with a total length of 16 km and a construction time of 3 10 BC. In 144 BC, the first diversion canal was built, with a total length of 90 kilometers, of which the length of the empty bridge was 16 kilometers. More than 10 aqueducts were built in ancient Rome, which could supply140,000 tons of water every day. Some channels are still working. They send water to the city fountain.

The picture shows the remains of the drinking water canal in ancient Rome, Spain.

Water supply system in ancient Rome

Aqueduct is one of the water diversion tools used in ancient civilization. Ancient Rome is the most widely used civilization in the existing aqueduct. The first drinking water canal built in ancient Rome was a culvert, with a total length of 16 km and a construction time of 3 10 BC. In 144 BC, the first diversion canal was built, with a total length of 90 kilometers, of which the length of the empty bridge was 16 kilometers. More than 10 aqueducts were built in ancient Rome, which could supply140,000 tons of water every day. Some channels are still working. They send water to the city fountain.

Question 4: What is a canal? The earliest public drinking water system

The earliest knowledge about water treatment is recorded in Sanskrit medicine and Egyptian inscriptions. The description of the device for clarifying liquids (water and wine) unearthed in Egypt can be traced back to BC 1500. Purification of water by filtration and clarification has a history of nearly a thousand years.

The earliest public drinking water system was to promote the public water supply canal in ancient Rome.

Modern public drinking water system began in Britain and Germany. 1855, john snow first studied the water pollution and epidemic diseases in London, and confirmed that water supply is the source of spreading diseases. At this time, the bacterial theory of the disease has not yet been established.

Water supply system in ancient Rome (picture)

Aqueduct is one of the water diversion tools used in ancient civilization. Ancient Rome is the most widely used civilization in the existing aqueduct. The first drinking water canal built in ancient Rome was a culvert, with a total length of 16 km and a construction time of 3 10 BC. In 144 BC, the first diversion canal was built, with a total length of 90 kilometers, of which the length of the empty bridge was 16 kilometers. More than 10 aqueducts were built in ancient Rome, which could supply140,000 tons of water every day. Some channels are still working. They send water to the city fountain.

The picture shows the remains of the drinking water canal in ancient Rome, Spain.

Water supply system in ancient Rome

Aqueduct is one of the water diversion tools used in ancient civilization. Ancient Rome is the most widely used civilization in the existing aqueduct. The first drinking water canal built in ancient Rome was a culvert, with a total length of 16 km and a construction time of 3 10 BC. In 144 BC, the first diversion canal was built, with a total length of 90 kilometers, of which the length of the empty bridge was 16 kilometers. More than 10 aqueducts were built in ancient Rome, which could supply140,000 tons of water every day. Some channels are still working. They send water to the city fountain.

Question: What's the pronunciation of canal?

phonetic letters

explain

Farmland irrigation often uses river water to introduce farmland through ditches opened on the ground. Canal is a man-made waterway, which is divided into main canal and branch canal. Main canals and branch canals are generally made of stone or cement.

Manual excavation of channels

Question 6: What is the pronunciation of the canal?

[Say qú]

[Interpretation] The channels of manual excavation

Question 7: What is channel topping? It is a kind of granite commonly used as a wall.

Question 8: What is Shuiqu Pinyin? Hello!

Shuiqu pinyin

[Say qú]

Question 9: Where are the canals? Many canals collapsed.

Buliang West Main Canal is located in Li Ling Village, with a total length of about two kilometers, one kilometer of which is standardized construction, and the landslide problem is concentrated in the standardized construction section. It is reported that replenishing the main canal of Liang Xi to irrigate more than 2,000 mu of farmland in Nanwei and Qiaojian Town is an important water conservancy project in Longan County.

At noon on May 20th, when the reporter arrived at Li Ling Village, it rained heavily. I saw that the water in the canal was so urgent that I couldn't see the bottom. Walk along the west main canal, only about 50 meters. On the left, a whole canal about 30 meters long collapsed completely, and cement sand was clearly visible at the joints without collapse. Then, a section of the canal dam separated from the shore and tilted into the canal. There are obvious cracks in the canal dam, which gives people a feeling of crumbling.

The reporter spent more than half an hour walking across the canal. According to statistics, there are five collapsed places. Every place is about 30 meters, cement gravel comes out, plus some cracks, and the "problematic" canal dam is not less than 150 meters.

As soon as the rain stopped, the reporter saw some villagers washing clothes in the canal. "Do you know when this canal was built?" The reporter asked. "Last month, many places collapsed." Some villagers answered. A villager surnamed Lu told reporters that there was a rainstorm in this area on May 1 1 day. Several places collapsed after the rain. "It's so easy to collapse, how can the quality of the canal be reassuring?" He is a little indignant.