Essays about: "uplift pressure"

Showing result 1 - 5 of 7 essays containing the words uplift pressure.

1. 1. Jet Grout Bottom Plug in Deep Excavations : Numerical Analysis of a Tunnel Project

   University essay from KTH/Jord- och bergmekanik

   Author : Ida Schjelderup; [2022]
   Keywords : Jet grouting; jet grout bottom plug; cut-and-cover tunnel; tunnel design;

   Abstract : This master thesis has investigated the performance of a deep excavation with a jet grout bottom plug used to prevent bottom heave and hydraulic uplift failure. The concept of a jet grout plug as a structural and sealing component in a specific case was studied, namely one of the tunnel sections of The West Link tunnel project in Gothenburg. READ MORE

3. 2. Numerical simulations of pore pressure on concrete buttress dams

   University essay from KTH/Betongbyggnad

   Author : Mohammed Abdi; Dimitirios Ntzimanis; [2022]
   Keywords : Porepressureanalysis; upliftpressure; buttressdams; drainage; groutcur- tain; rockfractures; damsafety; RIDAS.;

   Abstract : Uplift pressure is one of the most dominant forces on a dam structure. Difference in head water and tail water creates a hydraulic gradient resulting an upward oriented pressure called uplift pressure, which reduces the dam safety against sliding. READ MORE

4. 3. Day Zero: Communicating the water crisis in Cape Town, 2015-2018 : A qualitative study about the communication during the water crisis and how the public responded to the messages

   University essay from Karlstads universitet/Institutionen för miljö- och livsvetenskaper (from 2013)

   Author : Fredrik Karlsson; [2020]
   Keywords : Water; water crisis; communication; South Africa; Day Zero; water use; Vatten; vattenkris; kommunikation; Sydafrika; Day Zero; vattenanvändning;

   Abstract : Stigande urbanisering och större befolkningar har ökat trycket på städer och deras förmågor att förse alla med de vardagstjänster som städerna vanligtvis har kapacitet att erbjuda. Att förse alla med dricksvatten är något som har blivit en utmaning då vattenanvändningen har stigit samtidigt som vattentillgången varierar beroende på nederbörd, och potentiellt minskat på grund av klimatförändringarna. READ MORE

5. 4. An alarm system for pore pressure measurements in the foundation ofconcrete dams : a case study of Storfinnforsen buttress dam

   University essay from KTH/Jord- och bergmekanik

   Author : Daniel Falcão de Queiroz; [2018]
   Keywords : Buttress dams; dam foundation; pore pressure; alarm system; alarm limits; sliding in the rock mass; uplift pressure; piezometers.; Lamelldammar; dammgrundläggning; portryck; alarm system; alarmgränser; glidning i bergmassan; upptryck; portrycksmätare;

   Abstract : Concrete buttress dams are relatively light structures and less demandingon foundations; because of that, they may have problems with upliftforces and horizontal joints in the area of the dam´s foundation maypresent a failure mode through sliding. The Storfinnforsen dam, thelargest concrete dam in Sweden, had its foundation studied recently andthe discovery of sub-horizontal joints in the bedrock led to the necessityof having the safety of the dam foundation to sliding assessed. READ MORE

6. 5. Spatial variation in uplift pressure and correlation with rock mass conditions under two buttress dams : A case study of Ramsele and Storfinnforsen dams

   University essay from KTH/Jord- och bergmekanik

   Author : Diego Alcalá Perales; [2016]
   Keywords : Concrete dams; buttress dam; uplift pressure; probabilistic distribution; joint aperture; RQD.;

   Abstract : Uplift water pressure is one of the dominating forces with signicant impact acting on a dam. It is usually measured with piezometers installed along the dam. However, the value of the pressure along the dam is often hard to measure due to the limited number of piezometers available (Bernstone et al., 2009). READ MORE