tips for designing slopes in surface coal mines pdf

DESIGN OF OPTIMUM SLOPES FOR SAFETY AND …

Stability analysis of the benches & design of slope parameters, Design of ultimate pit limits, inter-ramps, and safety berms, Design of barrier between water bodies and the open pit, Design of spoil dumps. Monitoring of slopes and landslide hazards are important. working benches of a typical coal mine …

General Principles of Mine Design - ScienceDirect

Design development in the Polish mining industry was prompted by the necessity of modernizing and extending the existing hard-coal mines after the end of World War II. It became imperative to design and construct new hard-coal mines especially for coking coal, on a scale dictated by the rapid industrial and economic growth of the new Poland.

Analysis of Safety Aspects And Mining Practices For ...

slope under given conditions. Effective slope design includes determining safe and workable bench height, bench face angle, and bench width. To determine the relationship of mine design parameters/practices and effective ground control in surface mining, this study was undertaken. It included coal and nonmetal mines, and consisted of four parts:

DESIGN OF STABLE SLOPE FOR OPENCAST MINES

Slope stability analysis forms an integral part of the opencast mining operations during the life cycle of the project. In Indian mining conditions, slope design guidelines are yet to be formulated for different types of mining practices and there is a growing need to …

WATER MANAGEMENT IN THE MINING INDUSTRY

Mining Industry Water Outlook • Commodity demand continues to increase • More than half of mining investment over the next decade will be in high to extreme water-scarce areas • Water consumption is increasing at 5%+ annually • Water management CapEx is 10-15% of total mining spend, or $11-17 Billion pa* • AngloAmerican:

Applications of Ground-Based Radar to Mine Slope …

Factors that Limit Slope Stability Mine slopes are designed with an engineered factor of safety to control the risk of injury and equipment damage from rock falls and slope failures. Geologic structures, rock mass properties, and hydrologic conditions are elements considered in designing a safe and efficient mining operation.

A Handbook of Constructed Wetlands

cultural wastewater, coal mine drainage, and stormwater runoff in the mid-Atlantic region, The Handbook is not a design manual. The use of constructed wetlands to improve water quality is a developing technology. Much is not yet understood, and questions remain regarding the optimal design of wetland systems and their longevity.

Blasting Hazard Awareness Surface Coal Mines Instruction ...

Surface Coal Mines. L 38.2 : B61 / 1996 U.S. Department of Labor Mine Safety and Health Administration National Mine Health and Safety Academy IG 71 ( Revised 1996 ) JE VSTOHY corr.per Arors AUG I 4 1996 Siabord University Jor sor ...

(PDF) Surface Mine Design

Auger mining is a surface mining techniq ue used to recover additional coal from a seam located behind a highwall produced either by stripping or open-pit mining.

Appendix E: Coal Mining and Processing Methods | Coal ...

Steep topography, a steeply dipping seam, or multiple seams, all present challenging problems for designing stable slopes and productive operations in surface mining situations. Surface topography controls which of the surface mining methods—contour mining, area strip mining, or open-pit mining—is employed (see Figure 4.3). These differ ...

UNDERGROUND COAL MINING: FACTORS, COST, AND TIME ...

Number of Surface versus Underground Coal Mines 1978 Total 1,412 1,105 Mine Type No. of Mines % of Total Production (millions tons) % of Total Surface 3,176 54% 398 63% Underground 2,692 46% 229 37% Total 5,868 627 2004 Mine Type No. of Mines % of Total Production % of Total Surface 770 55% 738 67% Underground 642 45% 367 33%

EnvironmentAsia

and workers of Coal India Ltd for a period of six months. Fifty coal India officers were asked questions through interview schedule. Secondary data have been collected from CMPDI (Coal Mining Planning And Design Institute) records, monthly journals of IICM (Indian Institute of Coal Management), books and research paper related to coal mining.

(PDF) Pillar design in coal mines - ResearchGate

The paper points out that bord-and-pillar mining is the most important method of coal extraction in South African underground coal mines, and advocates that pillar design procedures should be ...

An application of expert systems in geotechnical risk ...

The interfacing of geological and design databases for a project and ESDS is presented and the problems of designing a decision support system around the available data are illustrated. The paper concludes by presenting an example which illustrates how ESDS may be utilised as a decision support system at the design stage of a UK surface coal mine.

Surface Mining Methods and Equipment

UNESCO – EOLSS SAMPLE CHAPTERS CIVIL ENGINEERING – Vol. II - Surface Mining Methods and Equipment - J. Yamatomi and S. Okubo ©Encyclopedia of Life Support Systems (EOLSS) Figure 2. Change in production and productivity of US coal mines The higher productivity for open pit mining equipment also lowers costs.

Coal Mining and Production - MIGA

Surface mining (t/1000t coal produced) Underground mining (t/1000t coal produced) Mining Techniques Contour Area Conventional Longwall Liquid effluents 0.24 1.2 1 1.6 Solid waste 10 10 3 5 Dust 0.1 0.06 0.006 0.01 Source: Based on Edgar, 1983 * (Note: Local conditions will form the basis for choosing the appropriate mining method)

Design of openpit mining - SlideShare

Pit design E Contd. In general for OC mines upto a depth of 200m, overall slope angle of 450 is permitted. ISN 18. E Contd. E. Pit design For deeper mines flatter highwall slopes will be necessary from safety point of view (for 35 T dumpers & above) ISN

CHAPTER 8: SUBSIDENCE PREDICTION METHODS

Required by MSHA for permitting of underground coal mines, used for designing pillars for longwall mines. Estimates the load and load-bearing capacity within the mine, and calculates a stability factor (SF) from the calculations. 8.7.3.2 ANALYSIS OF RETREAT MINING PILLAR STABILITY (ARMPS)

Resources ARblast: All Resources on Blasting A

2011 WV OEB: Predictability of Airblast at Surface Coal Mines in West ia 2007 WV OEB: Report Relating Surface Coal Mines Scaled Distance to Deep Mine Roof Peak Particle Velocities 2006 WV-OEB: Potential Effects of Surface Mine Blasts Upon Bat Hibernaculum 2005 Henderson, NV: …

Rock Slope Engineering Third Edition

mining, where slope heights can be many hundreds of meters, the economics of the operation are closely related to the steepest stable slope angle that can be mined. This extensively updated version of the classic text, Rock Slope Engineering by Hoek and Bray, deals comprehensively with the investigation, design and operation of rock slopes.

IC 9313 Roof control of stress relief jointing near ...

the same locality, the surface slope, depth of overburden, intensity of weathering, abundance of stress-relief joints, and strata composition. The greater the surface slope, the more rapidly drift mine entries willpenetrate the weathered zone, with only a narrow width required to achieve barrier integrity.

ASSESSMENT OF SLOPE STABILITY IN OPENCAST COAL …

These slope failure accidents in Indian mines have taken place due lack of sound design of slopes and lack of monitoring. So, the coal industry has identified slope design, monitoring and stabilization as one of the thrust areas. Table 1 Accidents due to highwall failure in Indian opencast coal mines (DGMS report, 2016) Year State Name of Mine

Texas Abandoned Mine Land Reclamation Projects

June 20, 1975, for coal and uranium and August 3, 1977, for all other types of mining. Funding for the Texas Abandoned Mine Land Reclamation Program is provided by a federal reclamation fee levied on each ton of coal mined in Texas.

Surface mining planning and design of open pit mining

So the overall pit slope is lesser the inter-ramp slope. In the example, almost 50% more tonnage must be moved to mine the same pit bottom. In the early design of a pit a lesser pit slope can be used to allow for the road system. The pit in Fig. 5 was designed with an overall slope of 380. The overall slope to use will depend on the width ...

UNDERGROUND MINE PLANNING AND DESIGN SEMESTER …

To identify software for mine planning and designing. 2. Explain the process of strategic mine planning and its impact on decision-making during project development and the factors considered in underground coal mine planning. Explain novel mining methods. 3. Illustrate surface layouts, pit bottom and pit top layouts for different transport ...

Research Article Mechanism of Roof Shock in Longwall …

mines operated under surface gullies. erefore, the slope movement of gullies is thought of as an additional factor resulting in the abnormal underground pressure. Many researchers studied the in uence of underground mining on surface slope [ ]. It is accepted that under-ground mining may cause surface slope sliding or even geological disaster. e e

Slope stability of deep surface coal mines in the presence ...

Abstract Coal and lignite (brown coal) are geo-resources that govern energy production for decades. Geomechanical challenges, particularly slope stability, related to surface coal and lignite mines are critical during operation and determine the post-coal era. Several failure incidents have been reported in mining areas, typically associated with a sub-horizontal failure surface on a weak ...

Design of Surface Mine Haulage Roads - A Manual

Design of Surface Mine Haulage Roads – A Manual By Walter W. Kaufman and James C. Ault ABSTRACT This Bureau of Mines manual for design of surface mine haulage roads covers such aspects of haulage road design as road alignment (both vertical and horizontal), construction materials, cross slope, and drainage provisions.

Potential of Breakthroughs of Impounded Coal Refuse …

Potential of Breakthroughs of Impounded Coal Refuse Slurry into Underground Mines PETER R. MICHAEL1 U.S. Office of Surface Mining Reclamation and Enforcement, 3 Parkway Center, Pittsburgh, PA 15220 MICHAEL W. RICHMOND U.S. Office of Surface Mining Reclamation and Enforcement, 1027 ia Street, East, Charleston, WV 25301 MICHAEL J. SUPERFESKY

CDC - Mining - Ground Control Design for Highwall Mining ...

Highwall mining is an important surface coal mining method, and it may account for approximately 4% of total U.S. coal production. Highwall stability is the major ground control related safety concern. Ground control plans for highwall mining should specify hole width, web pillar width, barrier pillar width and number of holes between barriers.

Guidelines MDG 28: Safety requirements for coal stockpiles ...

The coal stockpiles referred to in this guideline are of a size that require stockpile dozers to be used to facilitate handling requirements. In most cases these coal stockpiles are over a reclaiming tunnel. Coal stockpiles are either run of mine or washed product stockpiles created from the coal mining and coal washing processes. 1.4.4 Dozer ...

Abandoned Mine Methane as an Energy Source

Number of Gassy Abandoned Coal Mines in the U.S. 12 • About 10,000 abandoned underground (UG) mines • 500+ gassy coal mines emitting about 18 Bcf/ yr • 6 Bcf/yr recovered from 45 mines (20 projects) • 6 Bcf/yr potential from top 100 candidate mines …

Surface Mining Traffic Management - Safe Quarry

• Tips and Excavations • Lagoon Systems • Coal Stocking, • Sheeting Areas, Tip • Stand – offs: • Utilities • Water ways • Transport infrastructure • Public roads and footpaths Traffic Management Plan In the Surface Mining Industry vehicle dangers present the greatest risks to personnel and equipment.