Zobrazeno 1 - 10
of 1 539
pro vyhledávání: '"pressure balance"'
Publikováno v:
Chengshi guidao jiaotong yanjiu, Vol 27, Iss 8, Pp 234-239 (2024)
Objective The advancing speed of shield machine is crucial not only for the tunnel excavation pace but also for the predicting construction schedule and cost. Therefore, it is necessary to predict and analyze the advancing speed of the shield machine
Externí odkaz:
https://doaj.org/article/39a1fa70321a4eeba0f47ab3e08b4212
Publikováno v:
Chengshi guidao jiaotong yanjiu, Vol 27, Iss 8, Pp 227-233 (2024)
Objective Due to the characteristics of strong permeability and high water content in water-rich sand layer, the poor muck improvement can easily cause accidents such as spout spilling of screw conveyor and mud cake formation on the cutter plate duri
Externí odkaz:
https://doaj.org/article/7bcf6c88a2f94f209ba3d495f000630f
Publikováno v:
Case Studies in Construction Materials, Vol 21, Iss , Pp e03577- (2024)
The proper compressibility of shield muck is crucial for ensuring the safety and efficiency of shield tunneling. Foam conditioning is an effective method for improving the compressibility of muck. However, the amount of foam injected in practical con
Externí odkaz:
https://doaj.org/article/132955605a3447c1a403ab2b1a749eca
Publikováno v:
Izvestiâ Vysših Učebnyh Zavedenij i Ènergetičeskih ob Edinennij SNG. Ènergetika, Vol 67, Iss 3, Pp 268-280 (2024)
For domestic and drinking water supply for cities and large industrial enterprises, group well water intakes are widely used, in which prefabricated water pipelines are designed to transport water from wells to collection points. The choice of the op
Externí odkaz:
https://doaj.org/article/7cd94232e25c4c8e9598361549c711ea
Publikováno v:
Frontiers in Chemical Engineering, Vol 6 (2024)
Siphons have been used for thousands of years to transfer fluids without the use of pumps or power and are present in our daily lives. Paradoxically, it is only in recent decades that the operation of siphons has been fully clarified, which is now un
Externí odkaz:
https://doaj.org/article/f1c0b2f5b83949c8b4489b285da636ff
Publikováno v:
In Case Studies in Construction Materials December 2024 21
Publikováno v:
Journal of Rock Mechanics and Geotechnical Engineering, Vol 16, Iss 2, Pp 532-544 (2024)
Water spewing and muck plugging often occur during earth pressure balance (EPB) shield machines tunnelling in water-rich sandy strata, even though the conventional foam has been employed to condition sandy soils. In this study, a novel thickened foam
Externí odkaz:
https://doaj.org/article/9eb62de824d5468382e73a468b7da8a6
Publikováno v:
International Journal of Geo-Engineering, Vol 14, Iss 1, Pp 1-31 (2023)
Abstract Face stability control of excavation with earth pressure balance machine (EPB) approach is the best available method to reduce the ground deformation and settlement of surface structures in a tunneling project in urban areas. In the present
Externí odkaz:
https://doaj.org/article/0d441a4fe8974bb8b10ca03b99f8a3ed
Publikováno v:
Journal of Rock Mechanics and Geotechnical Engineering, Vol 15, Iss 11, Pp 2857-2867 (2023)
During tunnel boring machine (TBM) excavation, lithology identification is an important issue to understand tunnelling performance and avoid time-consuming excavation. However, site investigation generally lacks ground samples and the information is
Externí odkaz:
https://doaj.org/article/9d314ba82fb4424c9c26ea6cac3a9502
Publikováno v:
Buildings, Vol 14, Iss 9, p 2800 (2024)
The high permeability of gravel sand increases the risk of water spewing from the screw conveyor during earth pressure balance (EPB) shield tunnelling. The effectiveness of soil conditioning is a key factor affecting EPB shield tunnelling and constru
Externí odkaz:
https://doaj.org/article/a85d145f163a4478a7b6a634c9e24967