gangue filling pump

Diffusion law of coal gangue slurry and the application of fluidized

2023年8月14日  The diffusion law of coal gangue slurry is the key and foundation for the smooth implementation and good filling effect of coal gangue fluidization filling technology in caving The system comprises a coal gangue intelligent separation and crushing and longdistance continuous transportation system, a continuous pumping filling system and a filling template Design and application of intelligent filling system for fully The system comprises a coal gangue intelligent separation and crushing and longdistance continuous transportation system, a continuous pumping filling system and a filling template 极薄煤层综采工作面智能充填系统设计与应用2021年1月31日  In coal mine paste filling technology, geomaterials like coal gangue and fly ash are used as the main component, and cement is applied as the cementing material In the mining production, miningandfilling is a cyclic Development of Coal Mine Filling Paste with Certain

Research and engineering practice on space characteristics of

2023年12月12日  Coal gangue slurry backfilling technology utilizes the voids formed by the caving and fragmentation of overlying rocks as storage space for gangue, achieving insitu, 2024年7月11日  The gangue grouting and backfilling technique refers to using filling pumps, filling pipelines, and other equipment to transport gangue slurry made of broken gangue and water to the underground mining space [9,10]Experimental Study on Permeability Characteristics of 2023年1月29日  Paste filling mining is a green mining method, that is, used to process coal gangue, coal fly ash and other solid waste on the ground into paste slurry with no critical velocity, and no need for dehydration It uses a filling Frontiers Study on green filling mining technology 2022年11月1日  The fluidized filling technology of goaf coal gangue is mainly aimed at treating coal gangue, and the method is a new technology of filling by simply cementing the broken gangue or directly adding water to the pulping Study on the Slurry Diffusion Law of Fluidized Filling

Insights into factors influencing coal ganguefilled backfill

2024年1月12日  The results showed that the filling ability of fresh AASGs and AAFSGs was dependent on the flowability and increased with the modulus (SiO 2 /Na 2 O molar ratio) The 2022年10月8日  Firstly, the coal gangue is sorted underground, and then the largesize gangue is broken and mixed with water to prepare fluidized gangue, which is pumped to the gap of goaf through the filling pump and filling the A Numerical Simulation of the Interaction of Aggregate gangue and water en use the grouting pump to ll the gangue slurry to the separation area under the vital overburden layer of the stope through the ground drilling to prevent the critical layer Technology and engineering test of filling goaf with coal gangue 2023年11月23日  Then it flows automatically to the slurry receiving hopper in the filling pump Finally, the filling pump will fill the gangue slurry in the slurry receiving hopper to the caving zone of the goaf behind the 20101 working face by lowlevel grouting through the south wing return air main roadway pipeline and 20101 return air roadway pipelineTechnology and engineering test of filling goaf with coal gangue

(PDF) Deformation process and prediction of filling gangue: A

2019年1月1日  Gangue filling in the goaf is an effective measure to control the surface subsidence However, due to the obvious deformation of gangue compression, the filling effect deserves to be further studied2021年1月31日  In coal mine paste filling technology, geomaterials like coal gangue and fly ash are used as the main component, and cement is applied as the cementing material(PDF) Development of Coal Mine Filling Paste with Certain Early gangue and water en use the grouting pump to ll the gangue slurry to the separation area under the vital overburden layer of the stope through the ground drilling to prevent the critical layer Technology and engineering test of filling goaf with coal gangue 2022年8月22日  1 Introduction Coal ganguebased green cemented filling is to mix cement, CGP, coal gangue aggregate and water in mine filling according to a certain proportion, which can not only effectively solve the pollution problem caused by coal gangue discharge, but also improve the comprehensive utilization rate of coal gangue, but also effectively control mining Study on the influence mechanism of activated coal gangue

Study on the Slurry Diffusion Law of Fluidized Filling Gangue in

2022年11月1日  The fluidized filling technology of goaf coal gangue is mainly aimed at treating coal gangue, and the method is a new technology of filling by simply cementing the broken gangue or directly adding water to the pulping pump and filling it into the goaf underground Compared with the traditional pastefilling method, the filling technology is2024年2月29日  1 Introduction Filling and grouting with gangue in goaf is a common mining engineering technology module By filling the voids of the gangue skeleton with slurry, the resource utilization rate of the mine can be effectively improved, and problems such as ground collapse caused by goafs can be prevented [1, 2]Filling ganguefilled voids with slurry is an Study on the diffusion and deposition law of pore slurry in gangue 2024年3月27日  Underground backfilling stands out as a crucial technological strategy for the ecofriendly 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 Gangue grouting filling in subsequent space of coal green mining 2022年11月1日  The prediction method of residual space in the collapse area and the diffusion law of gangue fluidization filling slurry are two essential points for successfully implementing the technology and maximizing The test used Study on the Slurry Diffusion Law of Fluidized Filling

(PDF) Diffusion law of coal gangue slurry and the

2023年8月14日  To solve the problem of gangue discharge in coal mining, fluidized gangue filling technology was developed The key scientific problem of this technology is the diffusion characteristics of the 2024年5月3日  Coal gangue, the primary solid waste generated during the coal mining process, is typically disposed of on the surface, where it gradually accumulates to form gangue piles that significantly contaminate the Study on UltraLongDistance Transportable 2024年7月1日  Research on the bearing creep characteristics and constitutive model of gangue filling body July 2024; Scientific Reports 14(1) July 2024; 14(1) DOI:101038/s41598 start the hydraulic pump (PDF) Research on the bearing creep characteristics and 2024年1月12日  Paste backfilling involves mixing CG with other solid waste and water to create the flowable paste, which is then pumped into the minedout area using a specialized filling pump [8], [10] The transportation of backfills in the former method demands significant resources and energy and necessitates longterm monitoring after backfillingInsights into factors influencing coal ganguefilled backfill

Study on Filling Material Ratio and Filling Effect: Taking Coarse

2019年6月2日  1 Introduction During the underground mining, a large area of voids can be generated when the ore is removed To maximize ore extraction and the regional ground support, these voids should be backfilled [1, 2]Filling mining can scientifically reduce the impact and damage of mining on the nature, society, and living environment, maximize the use of limited 2022年1月1日  DOI: 101016/jengfailanal2022 Corpus ID: ; Numerical Simulation of Erosion and Fatigue Failure the Coal Gangue Paste Filling Caused to Pumping Pipes @article{Wu2022NumericalSO, title={Numerical Simulation of Erosion and Fatigue Failure the Coal Gangue Paste Filling Caused to Pumping Pipes}, author={Bo Wu and Xiaodong Numerical Simulation of Erosion and Fatigue Failure the Coal Gangue 2021年1月31日  Before filling, coal gangue first undergoes twostage crushing, and then, coal gangue, fly ash, cementing materials, and water are mixed in a certain proportion to prepare the paste Then, the paste is transported to the goaf by pumping The filling pump squeezes the paste from the silo to the pipelineDevelopment of Coal Mine Filling Paste with Certain Early 2022年5月4日  In the figure, λ g is the lateral coefficient after filling with fluidized gangue f g 1 is the pressure of the basic roof on the gangue after the slurry is full P is the pump pressure After the fluidized gangue is filled, the pump pressure will reversely act on the coal pillar As long as the coal pillar is not damaged at this time, it proves that the coal pillar can always remain stable Study on the stability of coal pillar under the method of gangue

Study on the Slurry Diffusion Law of Fluidized Filling Gangue in

damage to surface buildings, and a large amount of solid waste of coal gangue [1,2] In recentyears,Chinahasaccumulatedmorethan45billiontonsofcoalganguepiles,forming more than 2600 coal gangue mountains, covering an area of 13,000 hectares The casual landfilling or disordered heaping of coal gangue not only occupies vast land resources,of coal gangue based solid waste is imminent Filling mining can eectively solve the above problems, water to make slurry and pump it into the underground caving goaf12 is technology has Diffusion law of coal gangue slurry and the application of fluidized 2022年11月25日  China’s total coal production in 2021 exceeded 413 billion tons, 52% of the world’s total Coal gangue, a solid waste of coal mining accounts for 15–20% of coal production, when directly discharged on the ground Underground Disposal of Coal Gangue Backfill in 2019年6月2日  1 Introduction During the underground mining, a large area of voids can be generated when the ore is removed To maximize ore extraction and the regional ground support, these voids should be backfilled [1, 2]Filling mining can scientifically reduce the impact and damage of mining on the nature, society, and living environment, maximize the use of limited Study on Filling Material Ratio and Filling Effect: Taking Coarse

Rheological and mechanical performance analysis and proportion

2023年11月16日  Cemented backfill mining is a green mining method that enhances the coal mining rate and the safety of minedout regions To transport the cemented gangue backfill material (CGBM) into the minedout regions, it is essential to ensure high flowability and adequate compressive strength after hardening Based on the response surface methodology (RSM), 29 2019年6月2日  Filling mining is an effective way to settle the dilemma of “Three Down and One Above” in coal mining Fly ash and coal gangue can be used as filling materials with significant social (PDF) Study on Filling Material Ratio and Filling Effect: Taking 2022年10月8日  PDF To solve the problem of gangue discharge in coal mining, fluidized gangue filling technology was developed In t e r m s of f i l lin g power, pump pressu re i s a n inf l uenc ing fact (PDF) A Numerical Simulation of the Interaction of Aggregate and 2022年10月15日  In order to explore the influence of gradation and concentration on the rheological parameters of uncemented coal ganguefly ash backfill (UCGFB) slurry, based on the fractal theory, the particle (PDF) Study on Rheological Characteristics of Uncemented Coal Gangue

GangueCemented Fill in Goaf to Control Surface Subsidence

2018年12月3日  To fill the goaf with cemented gangue, the filling pipeline is laid between the second and the third pillars The specific filling procedures are: 1 Before each filling cycle, the gangue stack is assembled in the tail section of the lane so that its inclined length is not less than 40 m The filling distance of each section is 8–10 mFilling industrial pumps are widely used in mining, metallurgy, sewage treatment, power plants, petrochemicals, solid waste treatment, dredging, cement, tunnel construction, land reclamation and other fieldsIndustrial filling pumpQingdao Beizhong Machinery 2017年12月1日  Backfill mining is an effective way to control ground subsidence and govern gangue To solve the problem of thin coal seam mining under villages, a new thin seam backfill mining technology was A New Thin Seam Backfill Mining Technology and Its Application2024年7月2日  Discontinuously graded gangue Gangue particles were screened using a threshold particle size of 10mm Particles larger than this threshold were considered coarse, while those equal to or smaller Research on the bearing creep characteristics and constitutive

(PDF) Influence of Mass Concentration on

2023年4月5日  Influence of Mass Concentration on Microstructure and Pore Structure of CoalGangueBased Green Cemented Filling Body April 2023; Journal of and plasticity of the lling mixture, in the pump 2023年4月27日  Aiming at the difficulty of disposal of coalbased solid waste from highyield, highefficiency mines, this research proposed a technique of gangue grouting filling in subsequent space (GGFSS) for (PDF) Strata Movement of Gangue Grouting Filling in 2023年12月12日  The macroscopic characteristics of the fractured space and the microscopic pore features are critical factors determining the effectiveness of gangue slurry backfillingResearch and engineering practice on space characteristics of gangue 2021年12月17日  Therefore, the filling pump can still provide pressure loss, indicating that the filling industrial pump meets the requirements of stable operation of the filling system It can be seen from the main pressure results in Figure 6 that the filling pump was restarted after it was stopped for 60 minutes, and the pressure loss of the pipeline exceeded 10 MPaPaste Pipeline Transportation of Pumping Backfill Technology with

Rheology control of selfconsolidating cementtailings grout for

2022年1月17日  Solid filling refers to crushing CG generated during coal mining, mixing it with materials like fly ash and loess, and transporting the mixture to the minedout area for backfilling [8,9]RESEARCH ARTICLE Field study on the improvement of coal gangue filling using dynamic compaction Qingfeng Zhang1,2, Dongquan Wang ID 1* 1 School of Mechanics and Civil Engineering, China University of Mining and Technology, Xuzhou, Jiangsu, China, 2 School of Environmental and Civil Engineering, Jiangnan University, Wuxi, Jiangsu, China * Field study on the improvement of coal gangue filling using2023年8月3日  filling with coal gangue slurry, as sho wn in Fig 4 (b) 191 (3) Strengthening of Fracture s and "Shell" Structure: When the working face advan ces to 1800 cm, t he 192 Research and engineering practice on space characteristics of gangue 2024年5月25日  As shown in Fig 1, simplified gangue filling bodies in goaf and typical filling structures diagram are illustratedUnder the circumstance that mechanical properties of relevant layers and the total amount of gangue are certain, the filling structure shown in Fig 1 (c) has a better roof control capability However, as the filling structure is a geometric object, the Study on the influence law of gangue filling structure on the gas

Design and application of intelligent filling system for fully

At present, the filling technologies such as raw gangue and pneumatic pumping are usually used to fill the goaf of extremely thin coal seam, the design function of filling system is relatively single, and the linkage between multiple systems is lacking, so the intelligent separation of gangue and the continuous filling with the working face can not be realized In order to solve the above

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