Results 41 to 50 of about 2,873 (95)

The Application of Horizontal Directional Drilling for the Geological Investigation of Super-Long Tunnels: A Case Study

Geosciences
With the increasing construction of ultra-long tunnels, complex and highly variable geological conditions along tunnel alignments pose major challenges to geological investigation, design, and construction.
Qiang Zhao, Xuefeng Yan, Jiguo Liu, Sheng Huang, Baosong Ma   +4 more
doaj   +1 more source

Experimental Investigation and Simplified Assessment of Ultimate Pulling Length for Long-Distance Submarine Cable Pulling Using a Ball-Frame and Tensioned Steel Cable Series System

Buildings
Long-distance pulling of submarine cables inside horizontal directional drilling (HDD) steel casings is often limited by high interfacial resistance, rapid pulling-force accumulation, and poor adaptability to muddy-sandy environments.
Chunhao Lu, Zhidu Huang, Weizhu Gan, Hua Qin, Wei Xu, Lingzhen Ba, Renguo Gu   +6 more
doaj   +1 more source

Gel Stability of Calcium Bentonite Suspension in Brine and Its Application in Water-Based Drilling Fluids. [PDF]

Gels, 2022
Zhao Z, Chen S, Zhou F, Wei Z.
europepmc   +1 more source

Experimental Study on the Correlation Between Horizontal Directional Drilling Parameters and Rock Strength

Rock Mechanics and Rock Engineering
Exploring the quantitative relationship between drilling parameters and rock strength offers valuable data for enhancing rock engineering safety. This study employed a self-designed horizontal directional drilling (HDD) experimental apparatus, using a ...
Qiang Zhao, Xuefeng Yan, Shen Huang, Baosong Ma, Yang Chen, Zheng Zeng   +5 more
semanticscholar   +1 more source

Research on Online Positioning Method for Horizontal Directional Drilling Bits Based on Transformer-UKF Algorithm

Journal of Physics, Conference Series
With the acceleration of urbanization, horizontal directional drilling (HDD) technology has been increasingly applied in underground engineering construction, where the accuracy of drill bit positioning directly impacts construction quality and ...
Jiahui Tang, Chen Sun, Yang Zhang, Wenlang Zhou, Yongming Huang   +4 more
semanticscholar   +1 more source

Microbial‑induced carbonate precipitation (MICP) technology: a review on the fundamentals and engineering applications. [PDF]

Environ Earth Sci, 2023
Zhang K, Tang CS, Jiang NJ, Pan XH, Liu B, Wang YJ, Shi B.   +6 more
europepmc   +1 more source

Horizontal Directional Drilling: A Solution to Oil and Gas Pipeline Vandalism and Theft in Nigeria

International Journal of Latest Technology in Engineering Management & Applied Science
: Nigeria, a major oil-producing country in Africa, has long been plagued by the persistent problem of oil pipeline vandalism. Sabotage and illegal tapping of oil pipelines have resulted in significant economic losses, environmental damage, and ...
Ogunweolu Oluseyi Emmanuel
semanticscholar   +1 more source

Pemasangan Pipa HDPE dengan Metode Horizontal Directional Drilling pada Rehabilitasi Pipa Jalan Diponegoro Surabaya

Jurnal Dimensi Insinyur Profesional
Kebutuhan air bersih merupakan kebutuhan mendasar dalam kehidupan manusia. Berangkat dari pentingnyakebutuhan air bersih tersebut, pemerintah mempunyai peran penting untuk menjamin ketersediaan air bersih yang layak danberkelanjutan.
M. Machfud, Surya Hermawan
semanticscholar   +1 more source

Relative impact of factors affecting penetration rate of horizontal directional drilling

International Journal of Construction Management
Prediction of the penetration rate (PR) of horizontal directional drilling (HDD) depends almost entirely on the experience of practitioners. This has resulted in actual values of PR that are inconsistent with the predicted ones.
A. El-kelesh, A. Heniegal, Mostafa M. Arnaout   +2 more
semanticscholar   +1 more source

Installation of the Pipelines Made of Ductile Iron (DI) With the Usage Of Horizontal-directional Drilling Technique (HDD) For Water Supply Treatment Service and Sewerage Pipelines Construction and Reconstruction

Procedia Engineering, 2016
Abstract The cast iron is often considered to be rigid and fragile material that cracks even from a slight tap. It is true only in case when we speak about gray iron. The gray iron contains graphite in the form of flakes that are sharp incisions inside the metal provoking crack formation.
openaire   +1 more source