Aspects of Structural and Civil Engineering in "Deep Shaft Mine" Construction

Y.R. Rao, General Manager (Retd.) Mine shaft design and construction planning division CMPDIL HQ, Coal India Limited.
The "DEEP SHAFT COAL MINE" consists of essentially two vertical shafts, one to hoist men and materials, and the other for winding coal from deeper seems."MINE SHAFT" surface structures comprises(viz) shaft collar cum head frame foundation, shaft winding plant structures, and mine ventilation structures. The design and construction of these unique structures require specialized knowledge and advances in the state of art and expertise gained through experience.

This paper presents the structural and civil engineering aspects relating to typical design, constructional and operational features of Mine Shafts.

The aspects of mine shaft concrete lining, furnishing out-fittings in structural steel provided in the mine shaft structure underground are discussed and explained.

Introduction

With exhaustion of minerals at shallow depths the need arises for exploitation of deeper seems from surface. The "DEEP SHAFT COAL MINE" system comprises in general a twin shaft system with shafts situated at 80m-100m distance. The mine shafts currently developed are constructed as circular, concrete lined vertical openings with finished diameter up to 8.0m. to serve the functional requirements. In this system one shaft is equipped with skips for mineral hoisting and the other shaft equipped with "CAGES" serves the function of transport of materials, men and services like power, dewatering etc. The conveyances are hoisted by an ground mounted winding engine by means of ropes passing over pulleys (sheeves) installed over the steel head frame. The ventilation scheme involves providing exhaust ventilation for the mine with fresh air entering the downcast shaft is exhausted through up cast shaft by means of "MINE FAN" installation.

The mine shaft structure elements underground consists of shaft concrete lining, insets, sump and skip loading pocket. The mine shaft is furnished with out-fittings of "STRUCTURAL STEEL GUIDES" and equipments.

The "MINE SHAFT SINKING" (mining operation) is done with a temporary steel head frame for hoisting the buckets (kebble) and steel scaffold (sinking stage).

In this paper, the structural and civil engineering aspects in the construction and commission of typical "DEEP COAL MINE SHAFTS" are presented.

The typical mine shaft structure with permanent winding system is shown in Fig-1. The general system for mine shaft sinking with a temporary steel head frame is shown in Fig-2.

This section of the article is only available for our subscribers. Please click here to subscribe to a subscription plan to view this part of the article.

Click Here
To Know More or to Contact the Manufacturer
Please let us know your name.
Invalid Input
Please let us know your Designation.
Please let us know your Contact Number.
Please let us know your email address.
Please brief your query.
Our other Value-Added Services:

To receive updates through e-mail on Products, New Technologies & Equipment, please select the Product Category(s) you are interested in and click 'Submit'. This will help you save time plus you will get the best price quotations from many manufacturers, which you can then evaluate and negotiate.

Invalid Input
Invalid Input
Invalid Input
Brijesh Ashokbhai Wala, Engineer, National Highways and Infrastructure Development Corporation Limited (NHIDCL), presents the vagaries and challenges in underground construction, with case studies of projects constructed or planned

Read more ...

Anirban Sen, Business Line Manager – Underground Division, Epiroc Mining (India), explores the technologies, methods and benefits of modern intelligent face drilling equipment, the reasoning behind selection of ‘smarter’ face drills

Read more ...

This case study of the Sewa H.E. Project (120MW) in the Kathua district of Jammu and Kashmir, covers the planning process and various construction features of a 10.02km long, 3.3m diameter horseshoe shaped concrete lined tunnel

Read more ...

Strabag AG implements complex construction projects, particularly in tunneling and infrastructure development, and is represented in around 30 countries worldwide. It has been active in the fields of building construction, civil

Read more ...

Construction is underway on a tunnel as part of a bypass to relieve traffic for communities in Toggenburg, Switzerland. For Doka’s formwork experts, keeping in view the conditions of this project, their new, rentable tunnel system

Read more ...

On 22nd September 2021, hard rock/slurry TBM Urja (DZ670) manufactured by China Railway Construction Heavy Industry Cooperation Limited (CRCHI) achieved a breakthrough from the Cantonment Station to the Shivaj Nagar Station

Read more ...

Hard Rock Tunnel Boring Machine (TBM) is the first choice for the construction of hard rock tunnels because it is a fast, safe, and environmental-friendly construction method. As overburden increases, the ground stress of

Read more ...

The Mumbai-Nagpur Expressway is delayed until 2022 due to Covid-19. In the meantime, a machine with remarkable operational reliability was specially flown in from the supplier in Germany to help speed up the project.

Read more ...

US Tunnel Boring Equipment manufacturer, The Robbins Company, will continue to make owning and operation of its TBMs cost-effective for Indian contractors. It will also explore newer vistas of engagement with

Read more ...

Geo Constech Druc Svelta Resin Capsules
Geo Constech (GCPL), one of the leading solution providers of material and technology, introduces Druc-Svelta, Druc-Si’ment Cap, Druc-Stone, Druc-Colata 41, and Druc-Tyrocrete. With an objective

Read more ...

Horizontal Bores
Trenchless construction is a method of laying services under the ground without disturbing the surface structures. The imported underground horizontal drilling machines are available

Read more ...

Slag Crushed in Crusher
For the last 20 years, the use of by products of various origins in the production of concrete has become an increasingly widespread practice in the world. The main advantages are all the elimination of scraps

Read more ...

Soil Stabilization
Sub-grade soil stabilization is one of the primary and major processes in the construction of any highway. The aim of this research paper is to formulate a model to predict variation in the values of CBR

Read more ...

Building Resistant to Earthquake
Studies on hidden beams have been carried by various researchers. Its use for high rise buildings with raft foundation is of very useful. However, its use for low rise buildings may not be effective to a considerable

Read more ...

Sustainability Cement Perspective
The cement industry is one of two primary industrial producers of carbon dioxide (CO2), creating up to 5% of worldwide man-made emissions of this gas, of which 50% is from the chemical process

Read more ...

World Trade Centre Twin Tower
The failure and collapse of civil engineering structures in general and buildings in particular has become a very common phenomenon in last few years. This paper highlights the new reasons of failure

Read more ...

Polluting Cement
By the end of the Nineteenth century, the British rulers had imported 'Cement' to India and commenced discouraging the method of using freshly ground lime for masonry construction that was in vogue

Read more ...

Volvo Trucks Safety Systems
Since 1927, traffic safety has always been one of Volvo Trucks' core values and the company is currently well to the fore when it comes to safety development. Tiredness alerts, lane change assistance and help

Read more ...

Cement based construction industry plays a vital role in infrastructure development of a country. Cement concrete is the backbone material of construction industry. Water plays an important role in the production

Read more ...

×
Sign-up for Free Subscription
'India Construction Week'
Weekly e-Newsletter on Construction Industry
Get the latest news, product launches, projects announced / awarded, government policies, investments, and expert views.