How does Su Shi, a great writer, describe Zhuo Tongjing in his poems?

In 255-25 BC1year, Li Bing, a famous water conservancy expert, discovered brine while building Dujiangyan project, and then "crossing Guangdu Salt Well" opened the prelude to the development history of well salt in China. Guangdu Salt Well dug by Li Bing was a large shallow well dug on the basis of pumping water at that time. Due to technical limitations, this salt well is not very deep and has a large diameter. The technology of extracting brine from large shallow wells has a history of 1200 years. During the Northern Song Dynasty, people in Zhuotongjing Town, Daying County invented the technology of extracting brine from Zhuotongjing, and from then on, small deep wells gradually replaced large shallow wells. Su Shi, a great writer in the Northern Song Dynasty, recorded in "On Salt in Shu": "Since he took office, Shu has built a" Zhuo Tong ". The round knife cuts the mountain like a bucket, reaching tens of feet deep and becoming a spring from top to bottom. "

Zhuotong well is a living fossil of hand-made salt, and it is a salt well that absorbs brine with upright and thick bamboo tubes. "Digging and planting bamboo is an excellent thoroughfare". Zhuotong was invented in the Qing Dynasty and the Northern Song Dynasty, more than 800 years before the West. Its appearance is of great significance: it not only indicates that China's well salt mining technology has developed from the first stage of large-diameter shallow well brine mining to the second stage of small-diameter deep well brine mining, but also its core technology-impact drilling sinking method paved the way for later natural gas and oil mining. It has successfully solved the problems of drilling, well washing and cementing, achieved the success of mechanical drilling, created a precedent for human drilling, promoted the development of drilling technology in the world and made outstanding contributions to human civilization and development. Known as "the fifth great invention in ancient China" and "the father of oil drilling in the world". The scientific and technological circles have an image metaphor for Zhuo Tongjing: "Without Zhuo Tongjing, there would be no Gulf War".

Zigong is the birthplace of percussion drilling technology. During the Ming and Qing Dynasties, the percussion drilling technology in Zigong gradually matured, forming a complete set of drilling technology. Zigong has been mining well salt for 20 1X years. In the long history, in the narrow area of 55 square kilometers belonging to Zigong, the local Han working people * * * dug more than 3000 salt wells/kloc-0, and the cumulative depth was equivalent to drilling through more than 400 Everest manually. Every well has a crane, and the highest crane, Dade Well, is as high as 1 13m, which is very spectacular. At that time, Zigong was full of cranes and pipelines, and it was the largest workshop in the world. Among many well-preserved salt wells, the most famous one is Shenhai Well in Da 'an District, which was dug in A.D. 1835 and put into use three years later. The well depth is1001.42m.. At this depth, the deep-sea well will be fixed in a glorious position-the first ultra-kilometer deep well in the history of human drilling! Shenhai Well is a "living fossil" for producing well salt by indigenous method, and it is a symbol of the maturity of ancient drilling technology in China.