Theoretical research on construction quality real-time monitoring and system integration of core rockfill dam

2009 ◽  
Vol 52 (11) ◽  
pp. 3406-3412 ◽  
Author(s):  
DengHua Zhong ◽  
Bo Cui ◽  
DongHai Liu ◽  
DaWei Tong
Keyword(s):  
Real Time ◽  
System Integration ◽  
Theoretical Research ◽  
Real Time Monitoring ◽  
Construction Quality ◽  
Rockfill Dam ◽  
Core Rockfill Dam

Real-time compaction quality monitoring of high core rockfill dam

2011 ◽  
Vol 54 (7) ◽  
pp. 1906-1913 ◽  
Author(s):  
DengHua Zhong ◽  
DongHai Liu ◽  
Bo Cui
Keyword(s):  
Real Time ◽  
Quality Monitoring ◽  
Rockfill Dam ◽  
Core Rockfill Dam

Real-time monitoring of construction quality for gravel piles based on Internet of Things

2020 ◽  
Vol 116 ◽  
pp. 103228 ◽  
Author(s):  
Fengchen Chen ◽  
Huanjing Jiao ◽  
Liming Han ◽  
Liwei Shen ◽  
Wenjia Du ◽  
...  
Keyword(s):  
Internet Of Things ◽  
Real Time ◽  
Real Time Monitoring ◽  
Construction Quality

scholarly journals Research on Real-Time Supervisory System for Compaction Quality in Face Rockfill Dam Engineering

2018 ◽  
Vol 2018 ◽  
pp. 1-11
Author(s):  
Shengxiang Huang ◽  
Wen Zhang ◽  
Gen Wu
Keyword(s):  
Quality Control ◽  
Process Control ◽  
Real Time ◽  
Roller Compaction ◽  
Construction Quality ◽  
Position Information ◽  
Supervisory System ◽  
Rockfill Dam ◽  
The Face ◽  
Internet Of Things Technology

Compaction quality control in filling construction is of great significance to the stability and durability of the face rockfill dam. The conventional method of quality control mainly relies on manual process control and inspection for a limited number of test holes, which cannot meet the high requirements of modern mechanized construction and schedule anymore, with increasing of scale of face rockfill dams. There is an urgent need to propose a new quality control method of face rockfill dams during the entire compaction process. In this paper, a supervisory system based on GNSS (Global Navigation Satellite System) technology, wireless data communication technology, Internet of things technology, and computer technology is developed to supervise the real-time roller compaction parameters of the working surface including rolling track, rolling times, rolling speed, thickness, and smoothness. The system obtains continuous and high-precision spatial position information of roller compaction machines through GNSS technology and then calculates the roller compaction parameter information. The compaction quality control for the face rockfill dam is achieved through the supervision of roller compaction parameters. The feasibility and robustness of the developed supervisory system are validated by a case study in the face rockfill dam of Shuibuya project in China. The practice shows that the system provides a new and effective method of process control for the construction quality of the roller compaction in dam engineering and realizes real-time, precision, and automatic supervising of roller compaction parameters and ensures better construction quality.

Dynamic time-cost-quality tradeoff of rockfill dam construction based on real-time monitoring

2017 ◽  
Vol 18 (1) ◽  
pp. 1-19 ◽  
Author(s):  
Deng-hua Zhong ◽  
Wei Hu ◽  
Bin-ping Wu ◽  
Zheng Li ◽  
Jun Zhang
Keyword(s):  
Real Time ◽  
Dam Construction ◽  
Time Cost ◽  
Real Time Monitoring ◽  
Rockfill Dam ◽  
Dynamic Time

scholarly journals Study on the Freeze-Thaw Problems in the Winter Construction of the Lianghekou Earth-Core Rockfill Dam and the Countermeasures for Prevention

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Qihao Yu ◽  
Xiu-Ling Ren ◽  
Pan Yue ◽  
Gui-Ke Zhang ◽  
Jun-Feng Wang ◽  
...  
Keyword(s):  
Adverse Effect ◽  
Frozen Soil ◽  
Construction Process ◽  
Construction Quality ◽  
Frozen Soils ◽  
Freeze Thaw ◽  
Earth Core ◽  
Rockfill Dam ◽  
Core Rockfill Dam

Winter construction in seasonally frozen soil areas is inevitable. The variation of ambient temperature causes the freeze-thaw of the filling soils and its impact is significant, and whether the countermeasures can be effectively established and adopted is particularly important for the management and control of the construction quality of the project. This paper conducts systematic research based on the winter construction process of the dam core wall of the Lianghekou Hydropower Station, which is the third highest earth-core rockfill dam in the world under construction. The results show that for the construction site in the seasonally frozen soil area, there is a development process of the short-term frozen soils for the filling soils under the environment with low temperature in winter. The soil underwent a high-frequency freeze-thaw process wherein it was frozen at night and completely thawed during the day. During the freezing process, a large number of thin-layered segregated ice developed inside the soil to form a thin-layered or integral cryostructure, which will have an adverse effect on the engineering properties and the quality of the filling soils. And, the field tests demonstrate that the filling compaction degree of the frozen soils is difficult to meet the designed requirements. In order to effectively cope with the adverse effect of the freeze-thaw on the construction quality during the construction process, based on the analysis of the freeze-thaw characteristics of soils and its influence, and the energy exchange process of soils on-site, the principles and methods for establishing the freeze prevention system during the winter construction process are established, and a comprehensive monitoring system suitable for on-site is established in this paper. This research will provide an important reference for the scientific management and efficiency improvement of the winter construction process of the dams in cold regions.

1618: Real-Time Monitoring of Nitric Oxide and Blood Flow During Ischemia-Reperfusion in the Rat Testis

2006 ◽  
Vol 175 (4S) ◽  
pp. 521-521
Author(s):  
Motoaki Saito ◽  
Tomoharu Kono ◽  
Yukako Kinoshita ◽  
Itaru Satoh ◽  
Keisuke Satoh
Keyword(s):  
Nitric Oxide ◽  
Blood Flow ◽  
Real Time ◽  
Ischemia Reperfusion ◽  
Real Time Monitoring ◽  
Rat Testis

GaN heteroepitaxy by remote plasma MOCVD : Real time monitoring by laser reflectance interferometry

2001 ◽  
Vol 11 (PR3) ◽  
pp. Pr3-1175-Pr3-1182 ◽  
Author(s):  
M. Losurdo ◽  
A. Grimaldi ◽  
M. Giangregorio ◽  
P. Capezzuto ◽  
G. Bruno
Keyword(s):  
Real Time ◽  
Real Time Monitoring ◽  
Remote Plasma ◽  
Laser Reflectance
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