Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Preplaced Aggregate Concrete

Preplaced Aggregate Concrete

Preplaced aggregate concrete is ideal for construction environments that are not easily accessible. The process begins by properly wetting the gap-graded coarse aggregates to remove the dirt, then placing it in the form and compacting it. Voids are filled with a mortar mix pumped under pressure through slotted pipes. This mortar typically consists of Portland cement, pozzolan, fine aggregates, water, and a fluidizing aid. The pozzolan helps reduce bleeding and segregation while improving the...

Accelerators

Accelerators

Accelerators in concrete serve as admixtures to speed up the hardening process, enabling the concrete to achieve early strength faster. Although accelerators do not necessarily impact the time it takes concrete to set, they reduce this time in practice. A common accelerator is calcium chloride, which is particularly useful for hastening early strength development in cold weather or for rapid repair jobs that require quick heat generation after mixing.
The effectiveness of calcium chloride can...

Shotcrete

Shotcrete

Shotcrete is a specialized technique where mortar or small aggregate concrete rich in cement content is sprayed onto a surface at high velocity. The force of impact compacts the material and enables it to cling to vertical or overhead areas without sagging. The technique involves layering the shotcrete in stages until it reaches approximately 4 inches in thickness. Operator skill in nozzle management is pivotal in deciding the quality of the shotcrete. Shotcrete is used in constructing tunnel...

Cable Subjected to Concentrated Loads

Cable Subjected to Concentrated Loads

Flexible cables are commonly used in various applications for support and load transmission. Consider a cable fixed at two points and subjected to multiple vertically concentrated loads. Determine the shape of the cable and the tension in each portion of the cable, given the horizontal distances between the loads and supports.

Reinforced Brick Masonry

Reinforced Brick Masonry

Reinforced brick masonry is an advanced construction technique that enhances the structural integrity of brick walls by incorporating steel reinforcements. These reinforcements are either placed within the hollow cores of bricks or sandwiched between two layers of masonry, known as wythes, and are then secured in place with grout. Grout is a fluid mixture composed of Portland cement, aggregate, and water, providing the necessary bonding agent for the steel and brick.
To fortify brick walls...

Cable Subjected to a Distributed Load

Cable Subjected to a Distributed Load

The analysis of suspension bridges is a complex and critical process that involves multiple factors, including the shape and tension of the main cables. The main cables of suspension bridges are subjected to distributed loads, which result in changes in tensile forces and deformation of the cable. These loads must be carefully considered to ensure that the bridge is safe and capable of supporting the weight of different loads.

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Calcium/calmodulin-dependent protein kinase II links ER stress with Fas and mitochondrial apoptosis pathways.

The Journal of clinical investigation·2009

Same author

Cripto-1 overexpression is involved in the tumorigenesis of nasopharyngeal carcinoma.

BMC cancer·2009

Same author

Range of motion and orientation of the lumbar facet joints in vivo.

Spine·2009

Same author

[Silencing of COX-2 in nasopharyngeal carcinoma cells with a shRNAmir lentivirus vector].

Nan fang yi ke da xue xue bao = Journal of Southern Medical University·2009

Same author

The risk of melamine-induced nephrolithiasis in young children starts at a lower intake level than recommended by the WHO.

Pediatric nephrology (Berlin, Germany)·2009

Same author

Adult scoliosis in patients over sixty-five years of age: outcomes of operative versus nonoperative treatment at a minimum two-year follow-up.

Spine·2009

Search research articles

Related Experiment Video

Updated: Jul 15, 2025

Installation Method to Enhance Quality Control for Fiber Reinforced Polymer Spike Anchors

Installation Method to Enhance Quality Control for Fiber Reinforced Polymer Spike Anchors

Published on: April 10, 2018

Grouting anchor cable active advanced support technology for mining roadways.

Qinghe Yang¹, Gang Li¹, Weifeng Li²

¹College of Mining, Liaoning Technical University, Fuxin, 123000, China.

Scientific Reports

|September 27, 2023

Summary

Grouting anchor cable technology offers a safer and more economical alternative to passive support systems in mining roadways. This advanced support effectively reduces roof subsidence and separation, improving mine safety.

More Related Videos

Mechanical Expansion of Steel Tubing as a Solution to Leaky Wellbores

Mechanical Expansion of Steel Tubing as a Solution to Leaky Wellbores

Published on: November 20, 2014

Continuous Instream Monitoring of Nutrients and Sediment in Agricultural Watersheds

Continuous Instream Monitoring of Nutrients and Sediment in Agricultural Watersheds

Published on: September 26, 2017

Related Experiment Videos

Last Updated: Jul 15, 2025

Installation Method to Enhance Quality Control for Fiber Reinforced Polymer Spike Anchors

Installation Method to Enhance Quality Control for Fiber Reinforced Polymer Spike Anchors

Published on: April 10, 2018

Mechanical Expansion of Steel Tubing as a Solution to Leaky Wellbores

Mechanical Expansion of Steel Tubing as a Solution to Leaky Wellbores

Published on: November 20, 2014

Continuous Instream Monitoring of Nutrients and Sediment in Agricultural Watersheds

Continuous Instream Monitoring of Nutrients and Sediment in Agricultural Watersheds

Published on: September 26, 2017

Area of Science:

Mining Engineering
Geotechnical Engineering
Materials Science

Background:

Passive advanced support systems, like single hydraulic props, exhibit safety and economic deficiencies.
The Changping Coal Mine 53,081 roadway requires improved support solutions.

Purpose of the Study:

To propose and evaluate the grouting anchor cable active advanced support technology.
To investigate the influence of grouting parameters on grout diffusion and establish a seepage-stress coupling model.

Main Methods:

Theoretical analysis, laboratory tests, numerical simulations (COMSOL Multiphysics), and field tests were employed.
Grouting material ratio tests and parameter evaluations were conducted.
A grout seepage-stress coupling model was established to consider stress field effects on grout migration.

Main Results:

The optimal grouting material is Portland cement 42.5 with water glass, featuring a 15% ACZ-1 additive, 4% water glass content, and a 0.6 water-cement ratio.
Optimal grouting parameters include 5 MPa pressure, 6 min duration, and 2000 mm × 1000 mm spacing.
Field application demonstrated effective support, with maximum roof subsidence of 180 mm and separation values of 24 mm (9m depth) and 90 mm (3m depth).

Conclusions:

Grouting anchor cable active advanced support technology provides effective and improved support for mining roadways.
This technology successfully replaced single hydraulic props in the 53,081 roadway.
The study provides a theoretical foundation for designing advanced support parameters in mining roadways.