Results 1 to 10 of about 234 (181)

Comparative research on the pipe-soil frictional resistances of circular and rectangular pipe sections during trenchless pipe jacking. [PDF]

PLoS One
Pipe jacking is a trenchless construction method to achieve forward tunneling and efficient construction of underground structure simultaneously without extensive surface excavation. In the process of pipe jacking construction, the jacking force provided
Wen J, Zhang P, Xiang T.
europepmc   +2 more sources

Application of CIPP flipped lining method in the rehabilitation of old gas pipelines. [PDF]

Sci Rep
With the increase of urban gas pipeline operation time, more and more underground gas pipelines are facing various problems, and old gas pipelines urgently need to be updated and repaired.
Yun Y, Xinxin W, Zhongyi W, Yuyan W, Hao C.   +4 more
europepmc   +2 more sources

Enhanced Automated Guidance System for Horizontal Auger Boring Based on Image Processing. [PDF]

Sensors (Basel), 2018
Horizontal auger boring (HAB) is a widely used trenchless technology for the high-accuracy installation of gravity or pressure pipelines on line and grade.
Wu L, Wen G, Wang Y, Huang L, Zhou J.
europepmc   +2 more sources

Mechanical Properties of Novel Reinforced Spray in Place Pipe Material With Potential Fully Structural Performance Application

Frontiers in Water, 2021
Many utility owners in the United States are actively searching for new and innovative rehabilitation techniques to help them regain control and repair large tracts of their networks; moreover, traditional open cut replacement is too costly and slow to ...
M. Amin Azimi, John C. Matthews, Asal Bagherpour, Alhossin Alsadi, John J. Kraft, Shaurav Alam, Urso Campos   +6 more
doaj   +1 more source

Application of Artificial Neural Network in Tunnel Engineering: A Systematic Review

IEEE Access, 2020
Due to the lack of living space and the increase in population, there has been a construction boom in the underground space to improve the quality of human life. Tunnel engineering plays a vital role in the development of underground space.
Xiao Wang, Hongfang Lu, Xinjiang Wei, Gang Wei, Seyed Saleh Behbahani, Tom Iseley   +5 more
doaj   +1 more source

Case analysis of integrated maintenance technology for multi-dimensional rapid detection and trenchless reinforcement [PDF]

E3S Web of Conferences, 2021
China’s highway construction has moved from “construction-oriented” to the development stage of “equal attention to construction and maintenance”. The infrastructure represented by urban expressways, under heavy and complex traffic loads, is prone to a ...
He Yunwu, Liu Tao, Wang Tao, Liang Xiayi, Wei Hanxin, Zheng Zhigang, Xiao Xin   +6 more
doaj   +1 more source

Short-term load forecasting of urban gas using a hybrid model based on improved fruit fly optimization algorithm and support vector machine

Energy Reports, 2019
The accurate forecasting of short-term load for urban gas is the premise of gas supply sales, pipe network planning, and energy optimization scheduling.
Hongfang Lu, Mohammadamin Azimi, Tom Iseley   +2 more
doaj   +1 more source

Technological aspects of cased wells construction with cyclical-flow transportation of rock

Записки Горного института, 2020
A high-performance technology for constructing cased wells is proposed. Essence of the technology is the advance insertion of the casing pipe into the sedimentary rock mass and the cyclical-flow transportation of the soil rock portions using the ...
Andrei S. Kondratenko
doaj   +1 more source

Blockchain Technology in the Oil and Gas Industry: A Review of Applications, Opportunities, Challenges, and Risks

IEEE Access, 2019
Blockchain technology has been developed for more than ten years and has become a trend in various industries. As the oil and gas industry is gradually shifting toward intelligence and digitalization, many large oil and gas companies were working on ...
Hongfang Lu, Kun Huang, Mohammadamin Azimi, Lijun Guo   +3 more
doaj   +1 more source

Wastewater pipe defect rating model for pipe maintenance using natural language processing

Frontiers in Water, 2023
IntroductionClosed-circuit video (CCTV) inspection has been the most popular technique for visually evaluating the interior status of pipelines in recent decades. Certified inspectors prepare the pipe repair document based on the CCTV inspection.
Sai Nethra Betgeri, Shashank Reddy Vadyala, John C. Matthews, Hongfang Lu   +3 more
doaj   +1 more source