Validation of MODIS and CYCLOPES LAI products using global field measurement data

Jixi mine area is one of the early mined areas in China and it's a typical deep mine. Because of large deformation of underground roadway and dynamic disasters occurred frequently in this mine, five measurement points of in-situ stress in this mine was measured and then analyzed with inversion. Based on these in-situ stress measurement data, numerical model of 3D in-situ stress back analysis was established. According to different stress fields, related analytical samples of neural network were given with FLAC program. Through the determination of hidden layers, hidden nodes and the setting of parameters, the network was optimized and trained. Then according to field measurement of in-situ stress, back analysis of initial stress field was conducted. Compared with field measurement, with accuracy requirement satisfied, it shows that the in-situ stress of rock mass obtained is basically reasonable. Meanwhile, it proves that the measurement of in-situ stress can provide deep mines with effective and rapid means, and also provide reliable data to optimization of deep roadway layout and supporting design.

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Utilizing Spherical Near-Field Measurement Data in Antenna On-Platform Performance Studies

2018 18th International Symposium on Antenna Technology and Applied Electromagnetics (ANTEM) ◽

10.1109/antem.2018.8572968 ◽

2018 ◽

Author(s):

Richard Trembinski ◽

Derek McNamara ◽

Daniel Janse van Rensburg

Keyword(s):

Performance Studies ◽

Field Measurement ◽

Near Field ◽

Measurement Data ◽

Near Field Measurement

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Pengaruh Posisi Bukaan terhadap Penghawaan Alami pada Rumah Balai Padang

Gorontalo Journal of Infrastructure and Science Engineering ◽

10.32662/gojise.v2i1.525 ◽

2019 ◽

Vol 2 (1) ◽

pp. 10

Author(s):

Rahma Yanti

Keyword(s):

Field Measurement ◽

Stokes Equations ◽

Measurement Data ◽

Numerical Results ◽

Navier Stokes ◽

Navier Stokes Equations

Penelitian ini bertujuan untuk mengetahui efek dari posisi dari bukaan yang ada di rumah Balai Padang. Metode yang digunakan adalah eksperimental dengan menggunakan bantuan software CFD (computational Fluid Dimension) berdasarkan persamaan Navier-Stoke, menggunakan K-Epsilon RNG. Eksperimen dilakukan dengan validasi hasil pengukuran lapangan This study aims to investigate the effect of position openings in Balai Padang house. The numerical methodology is based on solution of the Navier-Stokes equations, using K-epsilon RNG. Numerical results are validated with available field measurement data.

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The Comparison of Tunnel Engineering Construction Methods for Renhechang Tunnel Crossing Underneath Existing Tunnel on Lanzhou-Chongqing Railway

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.405-408.1330 ◽

2013 ◽

Vol 405-408 ◽

pp. 1330-1333 ◽

Cited By ~ 1

Author(s):

Chuan Yi Sui ◽

Xu Dong Zhou ◽

Lin Hui Wang

Keyword(s):

Field Measurement ◽

Measurement Data ◽

Tunnel Construction ◽

Tunnel Engineering ◽

Engineering Construction ◽

Existing Structures ◽

Construction Methods ◽

Tunneling Method ◽

Simulation Results ◽

The Cross

Problems often exist in construction of transportation tunnels, such as the effect of new tunnels constructed close to existing structures. Solving this magnificent problem by carefully choosing tunnel construction methods will be beneficial to minimize effects on existing structures while ensuring the newly constructed tunnel is both time-consuming and economical. Three representative engineering methods-the benching tunneling method, the Center Diaphragm method and the Cross Diaphragm method-are compared in controlling the settlement of new tunnel vault and the deformation of the existing tunnel. Finally checking the simulation results by comparing with field measurement data.

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Maximizing MFL ILI Sizing Confidence and Accuracy Using High-Resolution Field Measurement Data

Volume 2: Pipeline Integrity Management ◽

10.1115/ipc2012-90528 ◽

2012 ◽

Author(s):

Patrick Yeung ◽

Ryan Sporns ◽

Stuart Clouston ◽

Grant A. Coleman ◽

Scott Miller ◽

...

Keyword(s):

High Resolution ◽

Field Measurement ◽

High Performance ◽

Field Data ◽

Oil And Gas ◽

Measurement Techniques ◽

Measurement Data ◽

Industry Standards ◽

Defect Profile ◽

Wide Range

Magnetic Flux Leakage inspection tools are generally calibrated on a series of manufactured defects. This has been shown to give good results on a wide range of defects in varying wall thicknesses, velocities and pipeline conditions. Significant improvements in sizing performance can be achieved if sizing algorithms can be optimized on high resolution field data with low uncertainty that more closely reflects the actual line specific corrosion dimensions and profiles. The effects of defect profile can be significant to the MFL signal response. In order to achieve this goal, very high resolution and accurate field measurement techniques are needed to map the combined profile of a significant number of corrosion defects. This paper discusses a process for developing high performance sizing algorithms that consistently better industry standards for MFL sizing performance in areas of high density or complex corrosion in both oil and gas pipelines through the incorporation of high resolution laser scan technology. Complex corrosion may be considered as an area wherein individual corrosions interact together such that they no longer behave as a single corrosion and the MFL response experiences a superposition of leakage signals. A review of the methodology will be discussed and the results demonstrated through case studies from both Enbridge Pipelines Inc. and TransCanada Pipelines Ltd. where high-resolution field data was used as the basis for sizing model optimization.

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