Determination of the Backfilling Time for the Zinc and Lead Ore Deposits with Application of the BackfillCAD Model

Skrzypkowski, Krzysztof

doi:10.3390/en14113186

Cited by 16 publications

(8 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to the calculation results of the model, the mechanical behavior characteristics of the backfill roof after excavation of the mining approach under different schemes are consistent, which is mainly reflected in the tensile stress concentrations and tension plastic zones of the roof directly above the mining approach, and the compressive stress concentrations and shear plastic zones of the two sides of the mining approach. Skrzypkowski K [27,28] presented some issues with laboratory and spatial numerical modeling of cemented paste backfill, which should be taken into account; thus, the above numerical simulation results combined with indoor experiments can infer that the existence of weak filling surface increases the distribution area and breadth of tension stress concentration area of the filling roof to a certain extent. When the angle between upper and lower layered mining approaches is arranged at sharp angles, the tension stress concentration area of a filling roof mostly appears near the weak filling surface, which has a certain partition effect on the tension stress concentration of the filling roof.…”

Section: Discussionmentioning

confidence: 99%

Research on Optimization and Numerical Simulation of Layout Scheme of Mining Approach in Downward Slicing and Filling Method

et al. 2023

View full text Add to dashboard Cite

The stability of the filling roof—as an important bearing unit in the stope of the access stope in the filling mining method—is of great significance to guarantee the safe and efficient production of the mine. Arrangement of the mining approach in downward cemented filling stope is the key factor affecting the stability of the filling body roof. Based on a combination of laboratory tests, theoretical analysis, and numerical simulation, the influence of different mining approach arrangements on the stability of the filling body roof is analyzed. The weak filling surface is formed between adjacent mining paths. The mechanical strength of the weak filling surface is significantly reduced by laboratory experiments. The relationship between the distribution of the weak filling surface, azimuth angle, and the stability of the filling roof is further studied by numerical simulation. The results show that, when the upper and lower layered mining approaches are arranged vertically or nearly vertically, the areas of stress concentration and the plastic zone in the numerical simulation results are the smallest, and the stability of the filler roof is the best.

show abstract

Section: Discussionmentioning

confidence: 99%

Research on Optimization and Numerical Simulation of Layout Scheme of Mining Approach in Downward Slicing and Filling Method

et al. 2023

View full text Add to dashboard Cite

show abstract

“…In the article [5], a mathematical model was developed to justify the choice of existing traditional technical devices for transporting rock mass. An extremely important aspect when making a decision to continue exploitation is the model of the deposit along with the estimation of the amount of resources that will be extracted to the ground surface by means of access workings.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Justification of the innovative design of the skip winch with a body moved by a counterweight gravity drive

Kaiym,

Chsherbinin,

Kaimov

et al. 2023

EEJET

View full text Add to dashboard Cite

The article has to grapple with the problem of creating an economically efficient and environmentally friendly technological process for a development of solid minerals in open-pit mining. In many mining countries of the world today, the depth of many open pits is already 400–600 m or more. At the same time, the cost of transporting 1 ton of rock mass when operating a quarry whose depth is 400 m is 65–70 % of the total cost of extracting 1 ton of minerals. The object of research is technical devices for transport of rock masses in the technological process of development of solid useful deposits in open pit mining. The main reasons are the need to construct transport routes for them by withdrawing the sections of the rock mass on above them, as well their lifting capacity is limited because of they all do use highly energy-intensive machines for transporting rock minerals. In article has been justified a skip cable winch supplied with a wheels moving along on a railroad way by using only a gravitational counterweight device for transporting rock mass from a place of their formation to Earth surface. There have been created a prototype of a planar skip winch with four cables for practical implement in open-pit mining. The theoretical and experimental investigations of the prototype have being confirmed its performance. The created skip winch will accomplish its performancing without using any energy machines even under adverse climate conditions. Its affected would allow to make an open-pit effectiveness to soar and environmentally do friendly because of there are all but excluded any transport vehicles whether on gasoline or diesel oil

show abstract

“…Numerical tests were performed in three-dimensional RS3 software [22], which is based on the finite element method. For the conditions of zinc and lead ore deposits found in Poland [23], a rock mass model was built, which consisted of the following layers: gray dolomite; ore-bearing dolomites with useful minerals such as galena and sphalerite; and limestone. The model (Figure 9) was 130 m (length) × 130 m (width) × 105 m (height), and was restrained in all directions.…”

Section: Numerical Modeling Of Strip Mining With Cemented Paste Backfillmentioning

confidence: 99%

3D Numerical Modelling of the Application of Cemented Paste Backfill on Displacements around Strip Excavations

Skrzypkowski

2021

Energies

Self Cite

View full text Add to dashboard Cite

This article presents laboratory and spatial numerical modeling of cemented paste backfill. The first part of the research concerned laboratory tests of a mixture of sand, water, and variable cement content (5%, 10%, and 15%). The density and curing time of the mixture were determined. Moreover, cylindrical samples with a diameter of 46 mm and a height of 92 mm were constructed, for which compressive and tensile strength were calculated after one, two, three, and four weeks. The second part of the research concerned 3D numerical modeling with the use of RS3 software. For the exploitation field with dimensions of 65 m × 65 m, a strip-mining method was designed. The main objective of the research was to determine the changes in displacements around the haulage room and transportation roadway located in the immediate vicinity of the exploitation field. For the first time in numerical modeling, a two-sided strip method was used for the four stages of mining the ore deposit where the post-mining space was filled with a cemented paste backfill. Based on this research, the compressibility coefficient was determined.

show abstract

Determination of the Backfilling Time for the Zinc and Lead Ore Deposits with Application of the BackfillCAD Model

Cited by 16 publications

References 33 publications

Research on Optimization and Numerical Simulation of Layout Scheme of Mining Approach in Downward Slicing and Filling Method

Research on Optimization and Numerical Simulation of Layout Scheme of Mining Approach in Downward Slicing and Filling Method

Justification of the innovative design of the skip winch with a body moved by a counterweight gravity drive

3D Numerical Modelling of the Application of Cemented Paste Backfill on Displacements around Strip Excavations

Contact Info

Product

Resources

About