- Source: Moling
- Source: Mo Ling
In the construction industry, moling is a trenchless method used to lay pipes. During the moling process, a pneumatically-driven machine known as a mole forces its way through the soil along the desired path of the pipe. Moling avoids the need to dig a trench and can be used to lay water pipes and the heating coils of heat pump systems.
Recently moles that are steerable have been developed allowing an operator to correct the track of the mole and to achieve curved bores.
The standard approach to moling is to dig a hole about 1 m square and 2 m deep. Such a hole is small enough that it can be dug by hand instead of by machine in inaccessible locations. The mole is then entered into the earth on the horizontal face at the bottom of this hole. A destination hole of similar proportions is also dug, and this is where the mole emerges. The mole itself is a steel cylinder about 60 cm long and 6 cm in diameter. It works as a pneumatic cylinder with pulsed compressed air causing the head of the mole to repeatedly hammer against the soil in front of the mole. Once the mole has passed through the earth the pipe can be pulled through the long horizontal hole.
References
Saint Mo Ling (614–697), also named Moling Luachra, was the second Bishop of Ferns in Ireland and has been said to be "one of the four great prophets of Erin". He founded a monastery at St Mullin's, County Carlow. His feast day is 17 June. Traditions about him are preserved in two manuscripts, The Birth and Life of St. Moling, and the Borama, both of which expound on how he ended a cattle tributary imposed by the kings of Tara on the kings of Leighin, in retribution for an incident when the son of the king of Leighin went on a cattle raid to Clonfert, killing several princesses in the act.
See also
Eithne and Sodelb
References
External links
Saint Moling et le Lépreux, a story about Mo Ling and a leper, edited from UCD Franciscan Manuscript A9 and translated into French by Paul Grosjean S.J. at Thesaurus Linguae Hibernicae
Further reading
Johnston, Elva (2004), "Mo Ling (d. 697)", Oxford Dictionary of National Biography (Online ed.), Oxford University Press, retrieved 16 February 2011
Stephen, Leslie, ed. (1888). "Daircell" . Dictionary of National Biography. Vol. 13. London: Smith, Elder & Co.
"Daircell" . New International Encyclopedia. 1905.
Kata Kunci Pencarian:
- Stasiun Shanghai
- Keresidenan Tapanuli
- The Untamed
- Mo Dao Zu Shi
- Sun Ce
- Shanghai Huochezhan
- Daftar kota tertua yang masih terus dihuni
- Moling
- Mo Ling
- Moly
- Mole
- Monamolin
- Moles
- Molality
- Moling of Luachair
- The Mole
- St Mullin's
