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Forward Simulation and Image Analysis of Ground-Penetrating Radar for Subsurface Pipes 1LING Dai-jian, 2FU Shi-hu, 3YUAN Jianli College of Civil Engineering, Yangzhou University, Yangzhou Jiangsu 225009, China ayzsldj@126.com, bfushihu2008@163.com, cyjl@yzu.edu.cn Key words: ground-penetrating radar; forward simulation; image analysis Abstract.
Finally, the relationship between pipe diameter and curvature radius is achieved by contrasting this data, which provides accurate and reliable basis for non-professionals in radar image recognition for engineering pipe. 1 Introduction The nondestructive technique of ground-penetrating radar detects subsurface target has been widely used, especially in Environmental engineering, Earth science, Municipal engineering, Mine detection and archaeology application[1].
Therefore, the establishment of radar target library, the application of semi-quantitative analytical technique about mathematical expression in engineering detection has a strong practicability.

Estimation Method for Spatial Capacity of Sea Areas Reclamation Zhang Minghui1, Chen Changping1, Suo Anning2,a 1.College of civil engineering, Dalian Ocean University,Dalian,116023 2.Key Laboratory of Sea Areas Management Technology, SOA,Dalian,116023,China ae-mail:san720@sina.com Keywords: Sea areas reclamation.
Reclamation engineer in this coast is relative easy.
It is difficulty to construct reclamation engineer in these coast, and it need more earth and stone to fill sea water body.
If the reclamation investing coast is bigger than local land base price, the reclamation engineer investing will be deficit.
Fig. 1 Relationship between reclamation cost and suitable depth For all sea areas reclamation engineer, onlycost of reclamation engineer less than local land base price, the sea areas reclamation engineer can be benefit.

Analysis on Variability of Mechanical Parameters in the Process of Rock Damage Wen-hui Tan, Lei Zhang, Dan-qing Gao and Ya-liang Li School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing, P.R.
The study is helpful for design and real- time stability evaluation on rock engineering.
However, it is valuable for determining real-time mechanical parameters according to the resistivity values, and helpful for accurately design and stability evaluation on rock engineering.
WANG, “Application of electric resistivity method to zonal disintegration exploration of deep roadway,” Chinese Journal of Rock Mechanics and Engineering, Vol.28, No.1, pp.111-120. 2009.
Lemaitre, “How to use damage mechanics,” Nuclear Engineering and Design, Vol.80, No.2, pp.233-245,1984

Sajid Hameed, petroleum processes engineering college, tikrit university, Iraq Dr.
Shafiul Ferdous, Khulna University of Engineering & Technology, Bangladesh Dr.
Mohamed Issam ZIANE, Higher School of Electrical and Energetic Engineering, Algeria Prof.
Parthiban Kathirvel, School of Civil Engineering, India Dr.
R.Delshi Howsalya Devi, Karpaga Vinayaga College of Engineering & Technology, India Prof.

The Brief Introduction of Database Technology Application in Irrigation Information Management System Long Wang1, a, Peiling Yang 1,b*, Shumei Ren 1, Chuangsheng Cheng 2, Dawei Gao 1 1College of Water Resources & Civil Engineering, China Agricultural University, Beijing 100083, China 2Jincheng Water Authority, Jincheng, Shanxi, 048000, China awanglong@cau.edu.cn, byangpeiling@126.com Keywords: Database, Irrigation, Information Management Abstract.
Irrigation experimental data is the basement of irrigation engineering design, area water resources optimization, agricultural water management and the future water right allocation and management.
Introduction Irrigation experimental data is the basement of irrigation engineering design, area water resources optimization, agricultural water management and the future water right allocation and management, which contains information in the field of soil, weather, crop, water resources, etc.

Improved Rigid Cable Method for Pre-stress Optimization in Suspend-dome Structures Wenfeng Du 1,2, a , Liming Zhu 1,b and Zhifei Sun 1,c 1 College of Civil Engineering and Architecture, Henan University, Kaifeng 475004, China 2 Zhejiang BADA Construction Group CO., LTD, Hangzhou 311800, China adwf@henu.edu.cn; b zlm811224@163.com; c vipyfd@163.com Keywords: suspend-dome structure; losses of pre-stress; rigid cable method.
An example and engineering application are discussed.
Results of an example and engineering application discussed have proved that the effectiveness of this method.

Predicting the Remaining Service Life of Reinforced Concrete Members after Fire Exposure Huai Liang Wang Civil and Architectural Engineering College, Dalian University, Dalian, China whuailiang@163.com Keywords: Bond Strength; Fire; RC Member; Reliability Abstract.
The engineering example indicates that the method of reliability analysis is suitable for predicting the change of post-fire resistance with temperature.
Gong: Computational methods for reliability of engineering structures.

Solid Modeling and Machining Approach of the Impeller Based on Five-Axis Machine Tool Yuxia Zhao1,2a，Jiejian Di 1,b，Dewen Gao 1,c 1Department of Mechanical and Electrical Engineering , North China University of Technology, Beijing, 100144，China; 2School of Mechanical Engineering, University of Science and Technology Beijing, Beijing,China azhaoyx@ncut.edu.cn, bdijiejian@ncut.edu.cn, cdeweng@ncut.edu.cn Keywords: Centrifugal Impeller; Tool-Path Planning; Five-Axis Machine; Five-Axis Rough Machining; Interference Check Abstract.
In the circumstances, Pro/Engineer software is applied to produce three-dimensional geometric model of the integrated impeller, some general principles followed by machining and modeling the impeller are brought forward.
Theoretical model of the integrated impeller The most typically complex components used in the compressor of civil aviation and the turbine of aerospace application are designed with free-form surfaces.
The study mainly puts forward some general principles and introduces detailed steps during the impeller modeling based on Pro/Engineer surface modeling system.
Based on Pro/Engineer software, through curves method is usually adopted to model the surface of the blades.

Seepage-Stability Analysis of a Mine Tailings Dam in Yunnan Province Based on ANSYS Shu Qi Ma1,a, Si Jing Cai1,b, Miao Guo2,c 1School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China; 2HBIS Mine Design Co.
Yue: Engineering mechanics of seepage flow and application.
Discussion on problems in the tailing dam engineering.
Journal of Hydraulic Engineering, Vol. 37(2006), No.5, p.554-558 (in Chinese) [7] X.M.
Journal of Water Resources & Water Engineering, Vol. 22 (2011), p.13-16 (in Chinese) [9] L.

Study of an Expert System for Safety Assessment of Soft Soil Roadbed Chunyuan Liu1, a, Zhuan Wang1, b and Shasha Jin1, c 1 college of Civil Engineering, HeBei University of Technology, Tianjin, 300401, China acyliu_2008@hotmail.com, bwangzhuan0713@126.com, cxiaocaowo@126.com Keywords: soft soil roadbed; safety; Analytic Hierarchy Process; Fuzzy Synthetically Judgment; expert system Abstract.
A large number of engineering practice showed that, there are certain fuzziness in safety boundaries of soft soil roadbed, and the uncertain factors that influences the safety of roadbed has a lot of number and complex .
Model for Expert System and Engineering case Binhai Avenue is a high standards transportation infrastructure construction projects in Tangshan City in recent years.
[7] Chuanhua Xu and Qingwen Ren: Chinese journal of rock mechanics and engineering, Vol.23(2004) ,p.1852,in chinese
[8] Yu Huang, Ximiao Jiang and Gao Liu: Chinese Journal of Underground Space and Engineering.