Jules Triger
Jules Triger (born March 11, 1801 in Mamers , † December 16, 1867 ) was a French mining engineer, paleontologist and geologist.
Life
Triger invented the pressure chambers for building in the groundwater or under water, in which an atmospheric pressure counteracts the penetration of the water. Originally he developed the process for extracting coal (in the mines of Chalonnes-sur-Loire in 1838) and called the process Triger . Improvements were due to the injector by Henri Giffard possible. The method was soon used in bridge construction for the construction of the pillar foundations in caissons , for example at the Brooklyn Bridge and in France by Gustave Eiffel in 1858 at a bridge in Bordeaux (Passerelle Eiffel) over the Garonne . In 1887 Eiffel used it for the foundation of two of its four pillars of the Eiffel Tower .
He went to school in Mamers and La Flèche and attended lectures on geology in Paris by Pierre Louis Antoine Cordier , professor at the Natural History Museum in Paris. According to Glossop, he is nowhere to be found as a student, neither at the École polytechnique , the École des Mines , the Sorbonne nor the École des Ponts et Chaussées, where he could have attended courses as a freelance listener (at that time the only lectures on civil engineering in France) .
Thanks to his invention, he was financially independent at the age of 32 and was able to devote himself to geological and paleontological research.
From 1833 he began to work as a geologist with stratigraphy , in addition to his work as an engineer. In 1834 he completed a geological map of the canton of Le Mans on a scale of 1: 40,000 and by 1853 he completed geological maps on the same scale for the remaining of the 30 cantons of the Sarthe department . As a paleontologist, he wrote a two-volume work with Cotteau on the echinoids of the department of Sarthe and contributed to the Paleontology Francaise . His own geological-paleontological collection (he also collected in Italy, Belgium, England) is in the Natural History Museum of Angers (with finds from the Ice Age site of Roc-en-Paille near Chalonnes-sur-Loire ). Herbert and Etudes-Delongchamps named an ammonite after him (Amonites trigeri) in 1860.
Jules Triger died unexpectedly during a meeting of the Société géologique de France.
He is one of the 72 names on the Eiffel Tower . He was an officer in the Legion of Honor and in 1853 received the great mechanics prize of the Institut de France.
literature
- Rudolph Glossop : Jules Triger 1801-1867 , Geotechnique , Volume 30, 1980, pp. 538-539
- the same: The invention and early use of compressed air to exclude water from shafts and tunnels during construction , Geotechnique, Volume 26, 1976, pp. 253-280
- Alfred Caillaux, Bulletin de la Société géologique de France, Series 2, Volume 25, 1868, pp. 547–555 (obituary)
Web links
Individual evidence
- ↑ The its information from Armand Mayer received
| personal data | |
|---|---|
| SURNAME | Triger, Jules |
| BRIEF DESCRIPTION | French mining engineer and geologist |
| DATE OF BIRTH | March 11, 1801 |
| PLACE OF BIRTH | Mamers |
| DATE OF DEATH | December 16, 1867 |