Results 91 to 100 of about 3,184,777 (174)

Influência dos parâmetros geométricos de uma plataforma semissubmersível no movimento de heave [PDF]

, 2015
TCC (graduação) - Universidade Federal de Santa Catarina. Campus Joinville. Engenharia Naval.O presente trabalho tem como objetivo estudar as respostas em heave do movimento de uma plataforma semissubmersível.
Lopes, Pedro Paludetto Silva de
core  

Mitigation of Floor Heave in West Kentucky Coal Mine

, 2016
A West Kentucky mine operation in No. 11 seam encountered floor heave, due to the localized increase in the thickness of the fireclay mine floor. Floor heave has overridden seals installed in two mined out panels. The third seal\u27s location was planned
Bradley, Joel, Unrug, Kot, Klimek, Mark, Perry, Kyle A.   +3 more
core   +1 more source

Study on the Mechanisms of Floor Heave in Roadways and Control Strategies via Grooving and Pressure Relief

Processes
With the increasing depth of mining operations, roadways experience higher ground stress and pronounced deformation. Elevated in situ stress leads to a continuous rise in vertical stress on surrounding rock. The excavation of roadways and working faces further redistributes the stress field, resulting in more frequent and severe floor heave. To address
Li, Tongxi, Hao, Bingyuan, Shi, Chaoyao
openaire   +1 more source

Mechanical model for controlling floor heave in deep roadways with U-shaped steel closed support

International Journal of Mining Science and Technology, 2015
Abstract Open U-shaped steel arch supports are commonly used in large-section static-pressure roadways in coal mines that are more than 900 m deep; however, it is very difficult to control floor heave of roadways. In this paper, a U-shaped steel closed support with an inverted U-shaped steel arch in the floor is proposed as a method for improving the
Yiming Zhao, Na Liu, Xigui Zheng, Nong Zhang   +3 more
openaire   +1 more source

Heave prediction techniques and design consideration on expansive soils

, 1990
Civil Engineering Department, College of Engineering, King Saud University, P.O. Box 800, Riyadh 11421, Saudi Arabia Phone: +(966-1)467‑77038 Email: adhowian@ksu.edu.saExpansive soil has been responsible for many structural damages that result in great ...
Abdulmohsin W. Dhowian, Dhowian, Abdulmohsin W.   +1 more
core   +1 more source

The Causes Analysis and Control Measures about Rapid Floor Heave in Deep Mine

, 2011
With the depth of coal mine increasing, it appeared a phenomenon of rapid floor heave in some roadways in a short time, which threaten greatly to the normal mine production and the lives safety of workers.
Zheng Bei, Sheng Zhang, Yi Fei Zhang
core   +1 more source

Winch driven active heave compensation for load transfer in overhead crane system [PDF]

, 2012
Ocean wave induced vessel heave motion is one of the most important issues in marine operation, especially in the load transfer using overhead crane system.
T. T. Wong, Mailah, Musa, Collin H. H. Tang, Wong, T. T., Tang, Collin H. H., Tang, Collin Howe Hing, M. Mailah   +6 more
core   +1 more source

Development And Application Of Mechanized Control Equipment For Roadway Floor Heave In Coalmine [PDF]

Proceedings of the 2017 2nd Joint International Information Technology, Mechanical and Electronic Engineering Conference (JIMEC 2017), 2017
Zhitao Kan, Xutao Li, Pan Chen, Junjie Shao, Youzhen Zhang   +4 more
openaire   +1 more source

Floor Heave Mechanism and Effect of Countermeasures for Mountain Tunnels

Quarterly Report of RTRI, 2022
SHIMAMOTO, Keisuke, YASHIRO, Kazuhide, KAWAGOE, Takeshi   +2 more
openaire   +1 more source

Experimental study on the mechanical characteristics of weakly cemented mudstone under different loading rates

Scientific Reports
With the gradual shift of coal mining to the western coal mining region of China, floor heave in weakly cemented mudstone roadways has become an issue affecting the safety and efficiency of coal mine production.
Junpeng Zou, Gang Li, Zibo Li, Yabing Zhang, Hang Liu, Yiming Wang   +5 more
doaj   +1 more source