Results 21 to 30 of about 325 (179)

Developing the Performance of Sewage Pipelines Repairing Using Trenchless Methods (Case Study: Isfahan) [PDF]

آب و فاضلاب, 2019
Nowadays, the using modern trenchless methods for repairing sewer networks have been developed in most countries. Generally, for repairing the sewage lines using trenchless methods, bypassing the repair zone is necessary.
Farzad Karimian, Ramtin Moeini, Mohammad Reza Zare   +2 more
doaj   +1 more source

Sustainability Assessment of Asset Management Decisions for Wastewater Infrastructure Systems—Development of a System Dynamic Model

Systems, 2019
This paper presents the development of a novel system dynamics (SD) model for better understanding the interrelation and feedback mechanism between the wastewater collection (WWC) and wastewater treatment plant (WWTP) systems. Causal loop diagrams (CLDs)
Hamed Mohammadifardi, Mark A. Knight, Andre A.J. Unger   +2 more
doaj   +1 more source

A Novel Hybrid Prediction Model for Hourly Gas Consumption in Supply Side Based on Improved Whale Optimization Algorithm and Relevance Vector Machine

IEEE Access, 2019
Accurate short-term prediction of the natural gas load is of great significance to the operation and allocation of the pipeline network. Because the short-term natural gas load has obvious nonlinearity and randomness, the traditional regression model is ...
Weibiao Qiao, Kun Huang, Mohammadamin Azimi, Shuai Han   +3 more
doaj   +1 more source

Laboratory tests and analysis of CIPP epoxy resin internal liners used in pipelines – part II: comparative analysis with the use of the FEM and engineering algorithms

Studia Geotechnica et Mechanica, 2021
In the case of underground network infrastructure it can be seen that objects functioning in the second technical condition, according to DWA-ATV 143-2, and subjected to rehabilitation with the use of close-fit trenchless technologies are capable of ...
Abel Tomasz
doaj   +1 more source

Theoretical Study on Design of Composite Lining Structure with Rigid–Flexible Combination for Trenchless Pipeline Rehabilitation

Applied Sciences, 2022
Trenchless rehabilitation lining can be divided into flexible solid wall lining structures, rigid lining structures and rigid–flexible composite lining structures.
Zhongsen Ti, Fuzhi Wang, Yahong Zhao, Baosong Ma, Cong Zeng, Baoyong Liao   +5 more
doaj   +1 more source

Studying Changes in Physical and Mechanical Properties of Polyethylene Pipes in Bending

MATEC Web of Conferences, 2016
In recent years, polyethylene pipes are used more and more often in the gas industry. In the construction of pipeline, especially for trenchless laying and repairing, they are subject to considerable bending stresses.
Serebrennikov Daniil, Berg Vladimi, Ivanov Vadim, Silnitskaya Natalia   +3 more
doaj   +1 more source

MODELING OF THE PROCESS OF CUTTING MINERAL GROUNDS BY PASSIVE WORKING DRAWNER DURING THE CONSTRUCTION OF CLOSED DRAINAGE

Вестник Дагестанского государственного технического университета: Технические науки, 2019
Objectives. The article describes an electronic model of the soil to study its rheological properties and study the process of cutting passive working bodies (knives) of mineral soils with trench-less method of building a closed drainage.Method.
E. Z. Batmanov, T. G. Gasanov, M. R. Guseynov   +2 more
doaj   +1 more source

Investigation of Debonding Effect in Internal Replacement Pipe System Under Lateral Loading

Applied Sciences
The aging pipeline infrastructure around the world necessitates immediate rehabilitation. Internal replacement pipe (IRP) is a trenchless system offering a versatile and cost-effective solution across a variety of industries, including oil, natural gas ...
Tri C. M. Tien, Allan Manalo, Patrick Dixon, Warna Karunasena, Hamid Ahmadi, Shanika Kiriella, Ahmad Salah, Brad P. Wham   +7 more
doaj   +1 more source

Customising flood damage functions to estimate the carbon footprint of flood‐related home repairs

Journal of Flood Risk Management, 2021
Flood damage functions are important tools used to estimate potential damage to the built environment from various types of flood‐related hazard events (e.g., hurricanes, riverine flooding).
Elizabeth Matthews, Carol Friedland, Ahossin Alsadi   +2 more
doaj   +1 more source

Buckling Behavior of Thin-Walled Stainless-Steel Lining Wrapped in Water-Supply Pipe under Negative Pressure

Applied Sciences, 2021
This paper presents a study about the buckling behavior of thin stainless-steel lining (SSL) for trenchless repair of urban water supply networks under negative pressure.
Chunqing Lu, Samuel T. Ariaratnam, Xuefeng Yan, Baosong Ma, Yahong Zhao, Weigang Xiang   +5 more
doaj   +1 more source