Downward layered entry filling method

下向水平分层进路胶结充填采矿法在毛坪铅锌矿的应用

摘要: 由于毛坪铅锌矿矿区整合后矿区面积和生产规模扩大,基于矿床开采技术条件,确定了毛坪铅锌矿最新地下采矿方案,围绕矩形、六边形两种形状采场的采准工程布置、回采工艺、充填等工序,介绍了下向水平分层进路胶结充填采矿法在毛坪铅锌矿的实际应用情况。 设计每间隔60 m划分 2024年4月24日  现场工业试验表明，在崩落法采场首采分段采用“阶梯式退采均匀扩展采空区+总量控制出矿”的技术方案，能够安全、高效地形成覆盖层，并通过增补“钢拱架+钢筋网+锚杆”的 软破矿岩条件下胶结充填法转分段崩落法研究及应用SUN Chengchao, LUO Lei, LIANG Yanbing Application of downward horizontal layered drift cementing and filling mining method in Maoping lead zinc mine [J] CHINA MINING Application of downward horizontal layered drift cementing and filling A layer layout and road type technology, which is applied in the field of preparation layer layout method and layout structure of downward singleentry layered filling mining, can solve Downward singledrift type layered filling mining preparation layer

金川龙首矿下向进路充填采矿的进路稳定性分析 维普期刊官网

摘要 金川龙首矿地应力高,矿岩破碎,在工程支护困难的矿段采用下向分层六边形进路胶结充填采矿法,分层逐采。 研究表明,稳定的六边形结构可有效避免应力在进路边缘集中。 结合龙首 2023年7月27日  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 Research on Optimization and Numerical 2024年3月1日  In this paper, we introduce the paste rheology theory system, which forms the theoretical backbone of cemented paste backfill We delve into key technologies such as paste Key theory and technology of cemented paste backfill for 2024年9月18日  Arrangement of mining approach in downward cemented filling stope is the key factor affecting stability of filling body roof Based on combination of laboratory test, theoretical Research on Optimization and Numerical Simulation of

Study of Instability Mechanism and Roof Caving Mode of

2022年5月9日  The downward layered cemented filling method, which is generally used in the mining of highvalue metal mines with poor surrounding rock quality, is widely believed to not 2024年2月16日  There are three types of commonly used methods to solve the engineering problems of layered backfill: theoretical analysis, indoor experiment, and numerical simulation, Failure behavior and fracture evolution mechanism of layered 2023年7月27日  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 (PDF) Research on Optimization and Numerical Simulation of The downward layered cemented filling method, which is generally used in the mining of highvalue metal mines with poor surrounding rock quality, is widely believed to not cause largescale Schematic diagram of the stope of downward

CNA Downward segmented filling method

A downward segmented filling method aims at highorder segment largescale extraction of medium and stable ore bodies in the underground of a metal mine, and comprises the following steps: A dividing the stope into a plurality of subsections in the vertical direction of the stope, wherein the heights of the subsections are properly adjusted according to the stability 2023年6月3日  The downward layered cemented filling method, which is generally used in the mining of highvalue metal mines with poor surrounding rock quality, is widely believed to not cause largescale (PDF) Research on Optimization and Numerical Simulation of The downward layered cemented filling method, which is generally used in the mining of highvalue metal mines with poor surrounding rock quality, is widely believed to not cause largescale The longitudinal projection map of the 1 # ore bodyAbstract: Due to the expansion of the mining area and production scale after the integration of the Maoping Mine, the latest underground mining plan of the Maoping Mine has been determined based on the mining technology conditions of the depositThe practical application of the downward drift cementing filling mining method in the Maoping Mine is introduced around the 下向水平分层进路胶结充填采矿法在毛坪铅锌矿的应用

A Simulation Method for Layered Filling of Grain Piles Based

2023年10月16日  Layered Filling Method (LFM) designed to expedite the computational process for cereal grain piles within silos By utilizing particle kinetic energy as a specific criterion, this model 2021年12月24日  A layer layout and road type technology, which is applied in the field of preparation layer layout method and layout structure of downward singleentry layered filling mining, can solve problems such as easy instability and collapse, low operation safety, and difficulty in roadway formationDownward singledrift type layered filling mining goldscigoldsci2024年1月1日  Cutandfill mining method can be applied in various types of ore bodies It has distinct advantages for highgrade, rare, and highvalue ore bodies, the deposits whose surface subsidence is unaccepted, the deposits with complicated mining environment, the deposits underwater bodies, main railway lines, and important buildings, the deposits of unstable ore CutandFill Mining Method SpringerLink

Downward Drift Mining with Backfill SpringerLink

2023年4月30日  Downward drift mining with backfill is the mining process in which the ore block is divided into a number of layers along the vertical direction, and stoping and filling proceed from top layers to bottom layers in the manner of drifting Characteristics: stoping proceeds from top to bottom in the manner of drifting2022年5月9日  The downward layered cemented filling method, which is generally used in the mining of highvalue metal mines with poor surrounding rock quality, is widely believed to not cause largescale instability of the roof strata in the mining area However, a nonferrous metal mine in northern China, which has been using the downward cemented filling Study of Instability Mechanism and Roof Caving Mode of 2023年1月1日  Experimental research on application of mixed aggregate of mining waste rock and tailings in downward layered approach and cemented filling mining method Jan 2021; 564;Mining waste utilization: case studies and good practices2024年2月16日  Downwardlayered filling: Coal gangue: Inner Mongolia: Tianyu Mine: 060: 250: 260: 25: Continuous mining and filling: Coal gangue: Inner Mongolia: Chahasu: 1000: 400: 50: 13: China as the factory background, Fig 1 (a) adopts the strip filling method of "mining 8 and leaving 24" with continuous mining and charging, the strip size is Failure behavior and fracture evolution mechanism of layered

CNA Downward layered and updown staggered approach filling

A downward layered updown staggered access filling mining method is realized by stope arrangement, mining preparation cutting, stoping, stope ventilation and stope filling, wherein a preparation layer is formed at the top of an ore body, the stoping of a layered access is started after all stopes of the preparation layer access are filled, the stoping of a two layered access is 2023年12月1日  At present, when addressing the problem of fault stability in mines, most attention is paid to the study of the impact of a single mining method on faults In order to study fault stability in mines more comprehensively, this paper researches the effect of coordinated mining using multiple mining methods For example, the sublevel caving method without the The Influence of Different Sublevel Heights on the Stability 2024年3月1日  Downward drift filling mining method (1) Ensure the safety of operation under an artificial false roof; (2) ensure that the filling body does not collapse when the adjacent route is mined False roof: 4–5; others: 1–2 Wall fill method: Ensure that the filling body does not collapse when the adjacent route is mined 0–06: Sublevel fill Key theory and technology of cemented paste backfill for A layer layout and road type technology, which is applied in the field of preparation layer layout method and layout structure of downward singleentry layered filling mining, can solve problems such as easy instability and collapse, low operation safety, and difficulty in roadway formationDownward singledrift type layered filling mining preparation layer

Study of Instability Mechanism and Roof Caving Mode of

The downward layered cemented filling method, which is generally used in the mining of highvalue metal mines with poor surrounding rock quality, is widely believed to not cause largescale instability of the roof strata in the mining area However, a nonferrous metal mine in northern China, which has been using the downward cemented filling 2023年7月27日  Keywords: downward slicing and filling method; weak filling surface; route arrangement; numerical simulation 1 IntroductionSlicing and F The downward slicing and filling method was introduced to China in the 1960s [1,2] Under the background of highefficiency and green mining, it develops rapidly and is widely used in metal mines [3]Research on Optimization and Numerical Simulation of As the direct roof of the stope using the downward drift cut and fill mining method,the stability of the artificial roof formed by backfill is the key to the successful application of the method The strength required for filled artificial roof is taken as the research object,and the typical technological characteristics of the downward approach mining method are analyzed Strength model and its application of downward drift filling 2013年2月23日  A historical retrospective of physical models of infiltration is followed by the presentation of mathematical methods leading to analytical solutions of the flow equations This review then addresses the time compression approximation developed to estimate infiltration at the transition between preponding and postponding conditions Finally Infiltration into soils: Conceptual approaches and solutions

Heterogeneous information phase space reconstruction

2024年6月10日  the stability of filling body–surrounding rock combinations Jinchuan Group’s Longshou Mine (located in Gansu Province, China) adopts a downward layered cemented filling mining method, in which mining operations are carried out under artificial false roofs after filling Compared with the case of a fully connected roof, the energy storage caIn an inclined layered solidfilling mining method in an ultrathick coal layer, tunnels and equipment are arranged according to a solidfilling mining method An artificial roof for a lower layer is formed by metal meshes and bamboo fences of a first layer a solidfilling mining method The method is repeated, until the entire ultrathick coal layer is finishedUSB2 Inclined layered solidfilling mining method JGLOBAL ID： Reference number：21A Experimental Research on Application of Mixed Aggregate of Mining Waste Rock and Tailings in Downward Layered Approach and Cemented Filling Mining MethodExperimental Research on Application of Mixed Aggregate The downward layered cemented filling method, which is generally used in the mining of highvalue metal mines with poor surrounding rock quality, is widely believed to not cause largescale Backfilling of excavation by means of rock fill (dry filling)

Surface Water Infiltration SpringerLink

2018年6月26日  where pF = common logarithm of the hydraulic head in cm (hPa), ψ m = Matrix potential, soil moisture tension (hPa), θ = V w /V p = degree of water saturation (1), V w = Water volume (cm 3), V p = Pore volume (cm 3) In soils, pF values between 1 and 7 may occur (eg pF = 2 corresponds to 10 2 hPa; Hartge 1991) Equation shows that the pF value is a function 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 mining approach in downward cemented filling stope is the key factor affecting stability of filling body roof Based on combination of laboratory test, theoretical Research on Optimization and Numerical Simulation of 2022年12月21日  For these mines, the downward layered filling mining technique is undoubtedly the most suitable mining method The downward filling mining technique may eliminate the troubles relating to poor ore deposit conditions, such as production safety, ore loss rate, and depletion rate However, in this technique, the safety of the artificial roof of Effect of layer thickness on the flexural property and 2022年4月13日  Compared with the layered excavation method, The layered section excavation method has less impact on the surface settlement and displacement and is safer, which is consistent with the conclusion obtained from the above analysis of deep foundation pit deformation 522 Impact on Building SettlementThe Influence of Different Excavation Methods on Deep

(PDF) Research on Optimization and Numerical Simulation of

2023年7月27日  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 The downward layered cemented filling method, which is generally used in the mining of highvalue metal mines with poor surrounding rock quality, is widely believed to not cause largescale Schematic diagram of the stope of downward A downward segmented filling method aims at highorder segment largescale extraction of medium and stable ore bodies in the underground of a metal mine, and comprises the following steps: A dividing the stope into a plurality of subsections in the vertical direction of the stope, wherein the heights of the subsections are properly adjusted according to the stability CNA Downward segmented filling method2023年6月3日  The downward layered cemented filling method, which is generally used in the mining of highvalue metal mines with poor surrounding rock quality, is widely believed to not cause largescale (PDF) Research on Optimization and Numerical Simulation of

The longitudinal projection map of the 1 # ore body

The downward layered cemented filling method, which is generally used in the mining of highvalue metal mines with poor surrounding rock quality, is widely believed to not cause largescale Abstract: Due to the expansion of the mining area and production scale after the integration of the Maoping Mine, the latest underground mining plan of the Maoping Mine has been determined based on the mining technology conditions of the depositThe practical application of the downward drift cementing filling mining method in the Maoping Mine is introduced around the 下向水平分层进路胶结充填采矿法在毛坪铅锌矿的应用2023年10月16日  Layered Filling Method (LFM) designed to expedite the computational process for cereal grain piles within silos By utilizing particle kinetic energy as a specific criterion, this model A Simulation Method for Layered Filling of Grain Piles Based 2021年12月24日  A layer layout and road type technology, which is applied in the field of preparation layer layout method and layout structure of downward singleentry layered filling mining, can solve problems such as easy instability and collapse, low operation safety, and difficulty in roadway formationDownward singledrift type layered filling mining

goldsci

goldsci2024年1月1日  Cutandfill mining method can be applied in various types of ore bodies It has distinct advantages for highgrade, rare, and highvalue ore bodies, the deposits whose surface subsidence is unaccepted, the deposits with complicated mining environment, the deposits underwater bodies, main railway lines, and important buildings, the deposits of unstable ore CutandFill Mining Method SpringerLink

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