..., circumferential reinforcement stress of diaphragm wall and concrete stress of diaphragm wall were obtained and analyzed in order to identity and evaluate the safety and stability state of the foundation pit retaining structure during the process of deep underground circular space excavation. INTRODUCTION...

... ABSTRACT On-site monitoring is a key issue to ensure the safety of the foundation excavation, especially the monitoring of the lateral displacement of the structure. Displacement field test is carried out on the established large-scale specialized coal terminal with the arrangement of complex...

... japan government metals & mining seafloor asia government rock model data mining crc deep seafloor dredged rock height adjustment system reservoir characterization cutter head excavation substrate cobalt mining mining testing machine adjustment system commercial development...

..., excavation and crushing tests were conducted in the site. Meanwhile, long-term environmental baseline survey was continuously conducted for the purpose of understanding marine environmental characteristics in the testing site and its surrounding area, and data such as organisms, physical chemistry, and so...

...), commissioned by the Ministry of Economy, Trade and Industry (METI), began exploration survey and technological development program for the development of the seafloor massive sulphides (SMS). Since then, JOGMEC conducted significant testing for excavation and lifting for SMS. In August-September 2017, actual...

... disturbance experiment particle size distribution excavation sediment concentration turbidity sediment trap Evaluation of Turbidity and Resedimentation through Seafloor Disturbance Experiments for Assessment of Environmental Impacts associated with Exploitation of Seafloor Massive Sulfides Mining...

... ABSTRACT A 62 m square, 8 m deep experimental excavation with slopes of 18°, 27°, 34°, and 45° to the horizontal was completed rapidly in the soft sensitive Champlain Sea clay deposit of eastern Canada. Monitoring of the excavation was carried out by means of survey monuments, piezometers...

...) and in the modeling stage, different conditions were considered. Element type, mesh density and excavation stages were three criteria whose effect was investigated in the current work. Finally, the result of analyses for the above-mentioned cases are to be presented and discussed in this paper in terms of Factor...

... Abstract In this study, two case histories performing the deep excavations in weak soils near shore area are introduced. Our concern of the deep excavation in this weak soil area was finding the proper excavation methods to keep the pressure of the soil and groundwater and to solve...

... lateral earth pressure oya tuff stone excavation displacement class machine concrete block ground pressure Deformation of Retaining Walls Caused by Construction of Soil-Cement Column Masahiro Ogawa Assistant Manager of Engineering of Department, Hokoku Engineering Co., Ltd Edogawa, Tokyo, Japan...

... physical model test engineering wave height abnormal change navigation channel wave propagation excavation wave direction reservoir characterization waterway marine transportation Study on Wave Propagation Affected by Navigation Channel Xiang Lin 1,2 , Bo Yang 1 , Yong Feng 1 and Qingming Liu...

... ABSTRACT The observed ground movements of excavations in layered ground are examined with emphasis on the relationship to the construction process and the ground condition. A finite element analysis is performed based on field measurements to predict and examine overall ground movements...

..., Japan Public Works Bureau, City of Osaka, Nanko Kita, Suminoe Osaka, Japan ABSTRACT On excavating soil in areas with a high ground water level, seepage of water is a problem. When the hydraulic head difference between the up- and downstream sides, H, is too large, seepage failure occurs at the base...

... The purpose of this study was attempting to predict the surface settlements and wall deflection during excavation through the feedback analysis. The optimization process using pattern search back-analyzes soil parameters. The results obtained from the back analysis were shown that the difference...

... The surface settlement curves observed from several deep excavation sites are very similar to the ones measured from the shield tunnel sites. Therefore, this paper presents an experiential formula based on the surface settlement curves of shield tunnel excavation to predict the one during a deep...

... ABSTRACT Controlled low-strength material(CLSM) which is easily excavated and also known as flowable material, is commonly used as a backfill in utility trenches and other applications. In this study, a rapid-setting flowable material a kind of CLSM made with marine clay were evaluated...

... a 1200 km long export pipeline, see Figure 2. pipeline installation excavation offshore pipeline seabed intervention pipeline ormen lange deep water disadvantage soil condition trench subsea rock installation installation intervention method post-lay intervention intervention free...

... become main current of the method in stead of pile-driving method having distraction environmental disruption. Figure 1 shows sorted and classification bored pre-cast pile method. The bored pre-cast pile method can be classified according to a combination of excavation methods with pile tip treatment...

... ABSTRACTS Braced-excavation works can affect the surrounding terrain variously: Main causes of the effects are deformation of ground accompanying that of the braced sustaining walls and loosening of ground caused by extraction of the sustaining walls such as sheet piles...

... ABSTRACT With considering large geometric deformation principle and materials' non-linear behavior, the interactive behaviors between soil and structure for un-symmetrical excavations were investigated by using 2- D plane strain model based upon theory of continua mechanics and finite...