Results 101 to 110 of about 361,142 (196)

Assessment of Floor Heave Associated with Bumps in a Longwall Mine Using the Discrete Element Method. [PDF]

Min Metall Explor, 2022
Kim BH, Larson MK.
europepmc   +1 more source

Bertrand Russell, Karin Costelloe‐Stephen, and Temporal Experience

Noûs, Volume 60, Issue 3, Page 536-547, September 2026.
Emily Thomas
wiley   +1 more source

Frost heave control measures for the frozen double-line tunnel undercrossing an operation station

Meitan xuebao
Aiming at the frost heave characteristics of long-distance and large-section underground freezing projects in cities, the double-line tunnel of Shanghai Metro Line 18 undercrossing an operation station was select as an example,a three-dimensional ...
Xiangsheng CHEN, Hang DING, Fangzheng LI, Xi CHEN, Wei GAO, Heng WANG, Lei WANG, Hanqing CHEN   +7 more
doaj   +1 more source

Mechanism for Controlling Floor Heave of Mining Roadways Using Reinforcing Roof and Sidewalls in Underground Coal Mine

, 2018
Controlling floor heave plays an important role in the stability of mining roadways that is pivotal to the sustainable, safe, and efficient development of coal resources in underground coal mines.
Gangye Guo, Hongpu Kang, Yang Wang, Deyu Qian, Fuqiang Gao   +4 more
core   +1 more source

Modelling and performance of an active heave compensator for offshore operations

, 2007
The development of offshore oil and gas fields require the placement of different equipment on the sea floor. This is done by deploying the equipment from vessels operating in dynamic positioning on the surface.
Perez, Tristan, Tristan Perez, Steinmann, Paul, Paul Steinmann   +3 more
core   +1 more source

Control of floor heave with rock bolts-steel piles coupling support technology

International Journal of Coal Science & Technology
The uncontrolled floor heave in gob-side entry retaining is the serious problem of underground coal mining. This phenomenon has gravely restricted the application of pillarless mining that has been increasingly used in coal mines in recent years.
Ivan Sakhno, Svitlana Sakhno
doaj   +1 more source

Experimental Study on Anti-Shear Properties of Floor Heave Control Anchor of Deep Soft Rock

, 2011
With the increase of Chinese mining depth, the deformation of deep soft rock is an increasingly serious problem, such as floor heave. The shear experiments of the different types of anchor were carried out. The results show that the anti-shear properties
Hai Yan Ju, Kai Hua Zeng, Chun Guang Wang   +2 more
core   +1 more source

Numerical Studies of the Floor Heave Control Method in Gob-Side Entry Retaining in Deep Coal Mines

Geotechnics
In the case of pillarless coal mining, the floor uplift reaches 60–80% of the total vertical convergence in gob-side entry, while total convergence often exceeds 1.0 m.
Ivan Sakhno, Svitlana Sakhno, Oleksandr Kyrsanov, Serhii Bashynskyi, Oleksandr Nosach, Liubov Shaidetska, Denys Darmostuk   +6 more
doaj   +1 more source

Heave of coal shale fill

, 1984
Washing plant discard, predominantly laminated and micaceous carbonaceous shale, was used as fill beneath a thick concrete floor slab. This paper discusses the cause of heave of the fill and the severe cracking of the floor slab—up to 70 mm—about a year
Johan Wagner, Adrian Smith, Jack A. Caldwell   +2 more
core   +1 more source

Set-Point Algorithms for Active Heave Compensation of Towed Bodies

, 2016
Active heave compensation is a technique used in marine applications to attenuate undesirable wave motions between a load and its host vessel. Motion attenuation is often achieved by reeling in or reeling out a cable tethering the load to the host vessel
Calnan, Clark
core