Ditapis dengan
Discrete Element Analysis of the Excavation Disturbance of Cross-River Twin-T…
The increasing number of twin-tunnels constructed in river-crossing subway traffic compels the designers to explore its dynamics performance in the excavation progress. The characteristics of particle accelerations of the granular medium in the surroundings are the important factors to reflect the excavation disturbance. In the construction process of the twin-tunnels, the excavation of the sec…
Study on Shrinkage of Ordinary Concrete Under Different Temperatures and Humi…
LOKASI: Ruang Koleksi Umum Rak 3
Study on Construction Control Measures of Shield Tunnel Overpassing Existing …
Nowadays the problem of soil loss during construction of shield driving has attracted much attention, especially in sandy silt. Moreover, it is easy to cause ground subsidence and destruction of surrounding environment because of the soil’s sensitivity and disturbing characteristic. Factually, existing tunnel has high control standards for deformation as well as its deformation occurs easil…
Effects of Different Factors on the Mining of Extra-Thick Coal Seam
Based on the mining case of Dafosi Coal Mine in Shaanxi Province, which is a typical coal mine with extra-thick coal seam, the effects of mining width, buried depth and rock grade on the ground surface deformation and sur-rounding rock stress have been studied by numerical experiments. It is found that both of the ground surface settlement (SS) and Horizontal Displacement (HD) increased with th…
Shearing Behavior of Segmental Joints of Large-Diameter Shield Tunnel
Segments floating is often encountered during the large-diameter shield tunneling. Shearing resistance of circumferential joints is of great importance for resisting the tunnel floating. The shearing resistance in terms of circumferential joint dislocation is studied using 3D numerical simulation. The influences of bolt types, gaskets, transmission cushions, and longitude bolt pre-force on the …
Numerical Validation of a New Testing Setup for Mechanical Test of Tunnel Lin…
When designing a shield tunnel, there is often a need to carry out mechanical tests on tunnel lining joints to obtain joint stiffness. As tunnel excavation goes deeper, the moment and axial force acting on the lining segments increase, which requires a more rigid backup frame and a stronger foundation for the traditional testing setup. A new testing setup, named as Compression Steel Butterfly…
Investigation on the Thermo-Mechanical Behavior of an Energy Pile and the Sur…
The exploitation of geothermal energy could cause additional thermal load imposed to the foundation and surrounding soils. The effects of temperature changes on the response of energy piles which can induce thermal expansion and contraction of both piles and soils need to be examined. This study investigated the behaviors of an energy pile and the surrounding soil using the model test and 2D …
Large-Scale Mine Water Geothermal Applications with Abandoned Mines
This paper reports on the first large-scale project in the U.S. for utilizing water from abandoned mines for geothermal applications. This project proved the high potential of turning water in deep abandoned mines into a renewable energy resource, which is safer, greener, and more abundant than other conventional low-enthalpy geothermal applications. In this paper, a real demonstration project …
Vibration Isolation of Cutter Picks on Mining Machines
LOKASI: Ruang Koleksi Umum Rak 2
