Results 51 to 60 of about 234 (181)
Geofluids, Volume 2025, Issue 1, 2025.The purpose of this paper is to analyze the diffusion mechanism of polymer slurry in rough fractures under slurry–rock coupling, which has important practical significance for polymer grouting repair of rock fractures. The rock mass fracture with random roughness is constructed in the spatial frequency domain, and the random rough fracture slurry ...
Yi Liu +7 more
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A new measurement-while-drilling system based on inertial technology
Advances in Mechanical Engineering, 2018 With the rapid development of trenchless technology, measurement-while-drilling systems draw extensive attention. At present, measurement-while-drilling systems are generally based on magnetic surveying technology or single-accelerometer measurement.
Hua Song +3 more
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Delayed pipe replacement halves environmental impacts but quadruples water loss
AWWA Water Science, Volume 6, Issue 2, March/April 2024.Abstract Scheduling pipe replacement is critical for water distribution systems (WDSs) when managing finances and water loss. WDS replacements are often delayed due to high immediate costs without considering long‐term environmental consequences. This study is the first to examine a real‐world WDS using a novel workflow transferrable to other WDSs that
Jonathan G. Clayton +3 more
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IET Communications, Volume 18, Issue 4, Page 271-282, March 2024.The map‐matching technology is the core of navigation technology, which plays a vital role in the field of intelligent transportation and intelligent navigation system, and has achieved excellent application results. The map‐matching algorithm can also achieve good results in data transmission path planning for WSN in grounding grid area. In this paper,
Xianghui Xiao +5 more
wiley +1 more source
Model Test on Excavation Face Stability of Shallow-Buried Rectangular Pipe Jacking in Sand Layer
Applied SciencesThis study addresses the critical challenge of excavation face instability in rectangular pipe jacking through systematic physical model tests. Utilizing a half-section symmetry apparatus with non-contact photogrammetry and pressure monitoring, the study
Yunlong Zhang +3 more
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Static calculations in the context of sewer pipe sliplining by polymer hose
MATEC Web of Conferences, 2018 The growing deterioration and unsatisfactory technical condition of the pipes of water supply and wastewater disposal networks in Russian cities and other inhabited localities, as well as limited (under the conditions of Russian housing and utilities ...
Primin Oleg, Orlov Vladimir
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Shock and Vibration, Volume 2024, Issue 1, 2024.Measures should be taken to prevent the effects of vibration caused by dynamic loads of machines. Research has shown that trenches can effectively reduce vibrations caused by machine foundations. It has been determined that the open trench provides the best performance against vibration, but it is not practical due to operational limitations ...
Sajjad Bazoobandi +3 more
wiley +1 more source
Applied SciencesIn box jacking, injecting lubricant around the box is an essential method to reduce excessive friction forces caused by the interaction between the box and soil.
Yunlong Zhang +5 more
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Energy Science & Engineering, 2020 In view of the complicated heat transfer calculation for air coolers and the difficulty of directly calculating the exit temperature of natural gas in a compressor station, taking the dry air cooler of model GP12 × 3‐6‐258‐13.0S‐S‐23.4/DR‐Ia configured ...
Enbin Liu +4 more
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Design of Large Torque Combined PDM for Pipeline Laying Trenchless Technology
Shiyou jixie, 2018 At present, PDM is mainly used to provide torque for the reaming bit in the trenchless technique for pipeline laying. However, owing to the limited torque provided by the existing PDM, multiple reaming operations are needed to achieve the requirements ...
Zhang Jie, Liang Zheng, Han Chuanjun
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