Trench excavation and support

Author(s):  
J. K. Budleigh
Keyword(s):  
2005 ◽  
pp. 79-91
Author(s):  
Yasuo TOYOSAWA ◽  
Toshiyuki MITACHI ◽  
Junjie YANG ◽  
Kazuya ITOH ◽  
TAMRAKAR S.B.

2009 ◽  
Vol 2 (2) ◽  
pp. 99-106
Author(s):  
Kazuya ITOH ◽  
Sahapol TIMPONG ◽  
Yasuo TOYOSAWA

Geotecnia ◽  
2015 ◽  
Vol 135 ◽  
pp. 159-168
Author(s):  
Silvrano Adonias Dantas Neto ◽  
◽  
<br>Francisco Chagas Silva Filho ◽  
<br>Adriano Frutuoso da Silva ◽  
◽  
...  
Keyword(s):  

2022 ◽  
Vol 2148 (1) ◽  
pp. 012023
Author(s):  
Wu Ye ◽  
Yong Lu ◽  
Lingzhi Xi ◽  
Qiang Zhang ◽  
Shaobin Hu

Abstract Rock breaking technology based on dry ice and energy-gathered agent has been developed and successfully applied in trench excavation for construction of oil pipeline. The vibration velocity waveform induced by this technology was monitored in site test to determine the attenuation law of vibration velocity with hypocentral distance. The results show that this rock breaking technology is effective method of trench excavation. It does not excessively damage the adjacent rock mass, ensuring the integrity of ditch walls. The vibration velocity induced by this technology is decay with the increase of hypocentral distance. At the hypocentral distance of 10m, the vibration velocity reduces to less than 20mm/s, which meets the requirements of the safety standard of blasting vibration in general buildings engineering. The results of this experiment have an important guiding effect on the field engineering practice and application of rock breaking technology based on dry ice and energy-gathered agent.


2021 ◽  
pp. 14-43
Author(s):  
Stephen Mileson ◽  
Stuart Brookes

The second chapter describes the physical character of the study area in detail as a framework for understanding the analysis supplied in the chapters to follow. It also sets out the main sources drawn upon in the book, notably the physical remains of archaeology and the fabric of the historic landscape itself, as well as documentary sources such as Anglo-Saxon charter bounds, manorial records, deeds, legal records, and maps, which yield data about the use of space and about inhabitants’ perceptions, the latter particularly revealed by the field names and bynames coined by local people themselves, and by legal depositions dealing with contested ownerships and customary practices. Key archaeological sources include village earthworks, excavated and standing buildings, and botanical and zooarchaeological remains. Archaeological fieldwork carried out as part of the project is described, including fieldwalking, test pit and trial trench excavation, extensive buildings survey, and measuring the soundmarks of church bells.


2012 ◽  
Vol 2012 ◽  
pp. 1-21 ◽  
Author(s):  
Jayur Madhusudan Mehta ◽  
Kelsey M. Lowe ◽  
Rachel Stout-Evans ◽  
John Connaway

The application of combined techniques such as aerial imagery, sediment coring, down-hole magnetic susceptibility, and mechanized trench excavation can provide critical information on landscape formation and mound stratigraphy, specifically if they can be used to understand mound sequences and development. This paper reviews preliminary findings from recent coring and test excavations at the Carson mounds site (22CO505) in Coahoma County, Mississippi. Aerial imagery assisted in the characterization of a crevasse ridge flood deposit underlying the site and detailed field descriptions of the pedology corroborated its existence. Subsequent sediment coring and trench excavation revealed the nature of flooding in prehistory, indicating that high-intensity floods were responsible for the formation of the crevasse ridge and that lower intensity floods were potentially responsible for interruptions in mound building at the site. This suggests that the Carson settlement was initiated on an actively flooding landform. Down-hole magnetic susceptibility correlated effectively with the pedology; however, it also helped discern anthropogenic surfaces (i.e., occupational layers) that are difficult to identify visually, such as those we found in Mound C. Findings from this pilot study demonstrate the utility of sediment coring and magnetic susceptibility as effective and feasible methods for developing hypothesis-driven research.


Sign in / Sign up

Export Citation Format

Share Document