safety distance of blasting high-tension line in open-pit mine

Numerical Simulation Study on Dust Suppression

·control methods in the blasting process of open pit mines many experts have put forward novel and efficient dust suppression methods Wang proposes a new dust reduction method based on water infusion blasting in open pit mines such as water seal blasting method blasting water fog method and so on Welideniya 2005; Wang et al 2021b

Study on Three Dimensional Dynamic Stability of Open

·During the production process of the open pit mine the blasting vibration effect not only threatens the stability of the slope but also even leads to local or large scale landslide

PDF Open Pit Mining ResearchGate

·Open pit mining method is one of the surface mining methods that has a traditional cone shaped excavation and is usually employed to exploit a near surface nonselective and low grade zones deposits

Optimization and Application of Spacing Parameter for

In view of the near slope blasting in Barun open pit mine which has merged sublevel mining the operation safety conditions of middle sized and large equipment in the second phase expansion are poor and need urgent improvement To increase the efficiency of expansion and reduce costs a 24 m high bench and large spacing parameter for loosening blasting are proposed The

Assessment of Blasting Induced Ground Vibration in an Open Pit Mine

·In an open pit mine slope rock mass has multiple joint structures and blasting operations have an obvious influence on its stability Therefore accurately predicting the blasting vibration is

Research on the prediction of blasting fragmentation in open pit

·The Beskuduk Coal Mine is located in Dahongliuxia Township Balikun Kazak Autonomous County Xinjiang Uygur Autonomous Region It covers an area of square kilometers with a proven reserve of

Optimization and Application of Spacing

·A landslide of the north open pit 323N and the stability and design optimization of the south open pit 323S slope in the 323 belts of the Tanjianshan Gold Mine were studied

Mining Methods Part II Surface Mining Planning and Design of Open Pit

·Figures shows In order to keep the pit dry There are 40 dewatering pumps around the Cortez pit pumping water out of the ground at a total rate of 30 000 gallons per minute

Modeling Study on Cumulative Damage Effects and Safety

·Drilling and blasting method used for excavation causes damage to surrounding rock mass and frequent blasting often leads to cumulative damage effects Thus understanding the distribution of Blast Induced Damage BID zone is critical to assess the slope stability of open pit mines Herein this study aims to investigate the cumulative damage effects

[VIDEO] Open Pit Mine Blasting Mining Digital

·Rock fragment movement during blasting operations is a major cause of ore and profit losses in hard rock open pit mines having a complex orebody To address this issue a novel multilayer dig limit approach which well considers blast movement in dig limit optimization was proposed in this study by combining machine learning techniques and practical heuristic

Research on blasting mechanism and blasting effect of

·Surface coal mining procedures include piercing—blasting—mining and loading—transportation—discharging blasting link exists due to the poor blasting effect leads to low loading efficiency

Assessment of backbreak due to blasting operation in open pit

·One of the major problems related to blasting operations in open pit mines is the formation of cracks on the benches behind the last row of blast holes backbreak Prediction of backbreak plays an important role in the safety of open pit mining and the reduction of the detrimental effects resulting from blasting operations In this study we have tried to develop

Controlled blasting in an open pit mine for improved

·The use of presplitting with the blasting programme for an open pit copper mine produced a significant improvement in the soundness of the final slope face As a result of the increased quality of the cut slopes the mine management were able to adopt 20 m high benches with a steep overall slope angle of 60"

Safety in Open Pit Mining 911Metallurgist

·Ditches are usually in place at the bottom of the high walls together with berms constructed with waste material placed at a designed distance from the top Draperies directly act on the stability of the blocks but also control their fall should failure occur Such systems are common practice within Australia open pit mines

Analysis of the Dust Concentration Distribution Law in an Open Pit Mine

·In this study a solar powered multipoint network monitoring method was used to record dust particle concentrations and meteorological indicators in the Anjialing open pit coal mine in the

PDF Slope stability risk management in open pit mines

·The stability of rock slopes in open pit mine and quarry operations is extremely important from both economic and safety points of view because unstable slopes can result in the loss of human life

Design of controlled blasting pre splitting in Golegohar

·Pre splitting is a controlled blasting technique with applications in open pit mines The main objectives of pre splitting in open pit mining are preventing/controlling back break; controlling

Microstructure and adhesion force of dust on soil pavement in open pit mine

·The microstructure and adhesion force between dust particles determine the dust starting and migration to a certain extent By use of scanning electron microscopy the BET method and the abruption technique the microstructure and adhesion force of dust on the soil pavement of an open pit mine were examined The results indicate that the dust shape of soil

Optimization and Application of Spacing Parameter for

In view of the near slope blasting in Barun open pit mine which has merged sublevel mining the operation safety conditions of middle sized and large equipment in the second phase expansion are poor and need urgent improvement To increase the efficiency of expansion and reduce costs a 24 m high bench and large spacing parameter for loosening blasting are proposed The

Failure process and mechanism analysis of rock slope

·Underground mining under the slope can induce strata movement which in turn can induce landslides and surface subsidence Previous studies have focused on the damage behavior of the surrounding rock mass caused by underground mining ignoring the combined effect on the rock mass from open pit mining to underground mining In this paper

Optimization of Pre Splitting Blasting Hole

·Blasting operations create significant problems to residential and other structures located in the close proximity of the mines Blast vibration is one of the most crucial nuisances of blasting which should be accurately estimated to minimize its effect In this paper an attempt has been made to apply various models to predict ground vibrations due to mine blasting To fulfill

Open‐Pit Mine Geological Model Construction and Composite Rock Blasting

It is significantly used to create a 3D model of an open pit mine The East Open pit Mine is located in Shuozhou City Shanxi Province in the northeastern part of the city It has a lot of coal reserves It is surrounded by large open pit coal mines such as Anjialing Antaibao Harwusu and Heidaigou and the coal it contains forms the Ningwu

Risk assessment and support design optimization of a high

·The stability of high jointed slopes has an important impact on the construction of engineering projects Herein aiming at the high jointed slope of mine by combining the jointed finite element method JFEM and the discontinuous deformation analysis DDA method a whole of process analysis method was proposed from identification of the slope stability and

Stability Analysis and Optimal Design of Ultimate Slope of an Open Pit

·The major goal of this study was to provide a stable and optimal design for the ultimate slope of the Shadan Open Pit Mine using numerical modeling to calculate the minimum factor of safety equal