Surface subsidence prediction method of backfill strip mining

Parameter selection principle of backfilling mining Guo et al analyzed the parameters of the probability integral method based on equivalent mining height of backfilling in accordance with theoretical research and the results of similar material simulations A slight difference is observed between the parameters of backfill mining and those

Sublevel open stoping mining method with subsequent backfilling

TL;DR In this paper a sub level open stoping mining method with subsequent backfilling for long hole caving in thin ore bodies is described which is characterized by comprising the following steps arranging ore blocks along the orientation of the ore bodies and dividing the ore block into ore chambers and ore pillars; dividing the mine blocks into segments in a vertical direction by

Backfill Practices for Sublevel Stoping System Springer

narrow vein ore bodies being mined with open stoping mining method with delayed backfill A detailed review of CRF practices is presented in Section 3 2 Review of Paste Fill Practice [1] Paste fill is the most popular backfilling method used for open stoping mining method with delayed backfill It requires mill tailings to be used as a raw

Simulation and optimization of mining separating backfilling

This study provides the optimization method of mining separating backfilling integrated coal mine production logistics system and the established simulation model can find and eliminate the system bottleneck to improve the coal mine output Moreover this method can analyze the coordination among mining ability separating ability and

Green coal mining technique integrating mining dressing gas

At the backfilling area the solid backfill method is used for coal mining A backfilling hydraulic support and a perforated scraper conveyor are used to backfill the goaf with gangue At the caving area the conventional fully mechanized coal mining method is employed This area is equipped with a conventional fully mechanized hydraulic support

Cemented backfilling mining technology with continuous mining

Cemented backfilling mining technology with continuous mining and continuous backfilling method for underground coal mine and typical engineering cases[J] Journal of China Coal Society 2022 47 3 1055 1071 Citation LI Yong liang LU Bin YANG Ren shu LIN Hai XU Bin WANG Shu shuai LIU Chen hui Cemented backfilling mining technology

Cemented Backfilling Mining Technology for Gently Inclined

The following groups were mined using this method to achieve full mining and backfilling of the working face A numerical model was developed to determine the bearing capacities of the coal pillars and backfills during this process based on the

Wongawilli roadway backfilling coal mining method a case

The current backfilling coal mining methods still have many limitations such as lack of filling time and filling space and poor coordination between filling time and filling space On the basis this paper proposed the Wongawilli roadway backfilling coal mining method WRBCM As a pattern of backfilling while mining WRBCM gives fully play to the advantages of the

PDF Underground Mining Methods Room and

Study on Sublevel Open Stoping with Subsequent Backfilling Mining Method Stope Parameters Optimization article{Song2011StudyOS title={Study on Sublevel Open Stoping with Subsequent Backfilling Mining Method Stope Parameters Optimization} author={Wei Song and Dong Xu Wang and Ya Nan Tang} journal={Advanced Materials Research}

Subsidence prediction method of solid backfilling mining

The backfill ratio of the gangue ε is the index for evaluating the quality of the equivalent mining height Guo et al 2014 is m e = m × 1 − ε where m is the thickness of the coal seam There are three main factors affecting the gangue backfill ratio They are lacking distance of roof contract movement of the roof and floor before backfilling and the

Cut and Fill Mining 8 Steps to Get Better at this Method

Trying every mining method isn t a wise idea at all Second it is essential to know the type of ore bodies and then go on your first mining job Nowadays many methods rely on the cutting and backfilling of the mine One of the top methods is the cut and fill mining method Are you curious to know about this method

Optimal Backfilling Materials with High Compressive

Backfilling material such as tailing mine wastes mixing with cement or gypsum has grown throughout the world s underground mines However despite their growing popularity the typical hydraulic and mechanical fill types utilized in many mines still exist Deep underground mining has increased due to the lack of commercial minerals nearby Mine wastes were

Wongawilli roadway backfilling coal mining method a case

The current backfilling coal mining methods still have many limitations such as lack of filling time and filling space and poor coordination between filling time and filling space On the basis this paper proposed the Wongawilli roadway backfilling coal mining method WRBCM As a pattern of backfilling while mining WRBCM gives fully play to the advantages of the

Minerals Special Issue Backfilling Materials for

Some articles studied mining method and coal winning technology of paste backfilling [5] [6] Zhang et al studied the strata pressure behavior of raw waste backfilling with fully mechanized coal mining technology [7] In fully mechanized backfilling mining we usually use waste rock fly ash and other solid materials as the backfill

Strata behavior and control strategy of backfilling

This article analyzes the technical difficulties in full section backfill mining and briefly introduces the technical principle and advantages of backfilling combined with caving fully mechanized mining BCCFM To reveal the strata behavior law of the BCCFM workface this work establishes a three dimensional numerical model and designs a simulation method by dynamically

Asymmetric Deformation Mechanism of Roadway with Continuous Mining

Continuous mining and continuous backfilling CMCB is an effective method to control surface subsidence and implement resource utilization of solid waste To address the issue of asymmetric deformation of the surrounding rock threatening the overall stability of roadways with CMCB the deformation characteristics of the roadways at the 2112 CMCB

The Recent Progress China Has Made in the Backfill Mining Method…

The backfill mining method is one of the common methods of mine mining worldwide due to its capacity to maximize the recovery of mineral resources and protect the underground and the surface environment Sheshpari M A review of underground mine backfilling methods with emphasis on cemented paste backfill Electron J Geotech Eng 2015

Progress and prospects of mining with backfill in metal

backfilling Finally it discusses the change direction of min ing with backfill in the emerging era 2 Development history of China s filling mining methods Dry filling is a method used in the early years whereby waste rock sand and gravel were transported to the extrac tion area through ore trucks wind or other mechanical

Control of surface deformation and overburden movement in coal mine

The mining waste rock is inevitable during the coal mining operations and it accounts for 10 % 15 % of the Run of Mine production Zhang et al 2019; Li et al 2022; Fan et al 2014 It is estimated that the accumulated waste rock in China is over 6 billion tons forming over 2600 big scale waste dump occupying over 13 000 hm 2 Zhang et al 2015; Li et al

Research on the control of overburden

Underground backfilling stands out as a crucial technological strategy for the eco friendly and effective management of solid waste in mining operations However existing backfilling techniques have led to increased production processes at the working face resulting in a reduction in coal extraction efficiency Addressing the temporal and spatial interference

Research on the Influence of Backfilling Mining in an Iron Mine

The safe and efficient extraction of ore bodies under buildings contributes to the continued exploitation and utilization of mineral resources To effectively reduce the mining induced disturbance caused to surface buildings the Vertical Crater Retreat VCR delayed backfilling method was applied at the Wuji iron mine according to mining theory and

Cemented Backfilling Mining Technology for Gently Inclined

To improve the efficiency and reduce costs of cemented fill mining we propose a continuous mining and continuous backfilling CMCB method based on the coal resources at the Yuxing mine in Inner