Results 1 to 10 of about 74 (66)

Shield Equipment Optimization and Construction Control Technology in Water-Rich and Sandy Cobble Stratum: A Case Study of the First Yellow River Metro Tunnel Undercrossing

Advances in Civil Engineering, 2019
The Lanzhou Yellow River Tunnel is the first metro shield tunnel that undercrosses the Yellow River in China. It was completed after successfully overcoming several construction challenges, including strata with a high proportion of large-sized sandy ...
Fei Ye, Nan Qin, Xiang Gao, Xue-yong Quan, Xian-zhuo Qin, Bing Dai   +5 more
doaj   +3 more sources

Adaptability of the Cutter-Head of the Earth Pressure Balance (EPB) Shield Machine in Water-Rich Sandy and Cobble Strata: A Case Study

Advances in Civil Engineering, 2020
Earth Pressure Balance (EPB) shield machines are considered to be the most efficient tunneling method for Metro tunnels due to their adaptability to a great variety of ground conditions, higher construction efficiency, and providing a safer working ...
Chaodong Wan, Zhiyi Jin
doaj   +2 more sources

Calculation Model of Safety Distance between Shield Tunnels and Underground Cavities in Water-Rich Sandy Cobble Stratum

Chengshi guidao jiaotong yanjiu
［Objective］In order to ensure the shield tunnel construction safety in water-rich sandy cobble stratum when passing through underground cavities, it is necessary to study the safe distance between the shield tunnels and the underground cavities.
XIE Lihui
doaj   +2 more sources

Application of Grouting Method for Underground Excavation Construction of Urban Rail Transit Connecting Passage in Water-rich Sandy Cobble Stratum

Chengshi guidao jiaotong yanjiu
Objective Connecting Passage 1 in the interval of Jiujiang North Station and Longqiao Road Station of Chengdu Metro Line 19 Phase II is located in water-rich sandy cobble stratum.
LI Qiaobin, ZHANG Zhening, ZHONG Jiuan, ZANG Peng, CHEN Xiaodong   +4 more
doaj   +2 more sources

Optimization of anti-dispersion grouting material parameters for leakage treatment of tunnels in water-rich sandy cobble stratum

Case Studies in Construction Materials
Jie Su, Xiaokai Niu, Xingyu Lu, Wei Li, Hongzhi Cui, Chengping Zhang, Jinpeng Guo   +6 more
exaly   +4 more sources

Epikarst water detection using integrated geophysical methods. [PDF]

Heliyon, 2023
Du C, Chen Y, Xie H, Lai X, Lin J.
europepmc   +1 more source

With Impressions Chosen from Another Time: Core Technologies and Debitage Production at the Lower Palaeolithic Site of Notarchirico (670-695 ka; layers F to I2). [PDF]

J Paleolit Archaeol, 2023
Carpentieri M, Moncel MH, Eramo G, Arzarello M.   +3 more
europepmc   +1 more source

Origin and composition of three heterolithic boulder- and cobble-bearing deposits overlying the Murray and Stimson formations, Gale Crater, Mars. [PDF]

Icarus, 2020
Wiens RC, Edgett KS, Stack KM, Dietrich WE, Bryk AB, Mangold N, Bedford C, Gasda P, Fairen A, Thompson L, Johnson J, Gasnault O, Clegg S, Cousin A, Forni O, Frydenvang J, Lanza N, Maurice S, Newsom H, Ollila A, Payré V, Rivera-Hernandez F, Vasavada A.   +22 more
europepmc   +1 more source

Farming strategies of 1st millennium CE agro-pastoralists on the southern foothills of the Tianshan Mountains: A geoarchaeological and macrobotanical investigation of the Mohuchahangoukou (MGK) site, Xinjiang, China. [PDF]

PLoS One, 2019
Li Y, Storozum M, Tian D, Frachetti M, Su K, Wang X.   +5 more
europepmc   +1 more source

Acheulean technology and landscape use at Dawadmi, central Arabia. [PDF]

PLoS One, 2018
Shipton C, Blinkhorn J, Breeze PS, Cuthbertson P, Drake N, Groucutt HS, Jennings RP, Parton A, Scerri EML, Alsharekh A, Petraglia MD.   +10 more
europepmc   +1 more source