Blasting safety involves assessing, controlling, monitoring, and managing risk throughout the entire process of a blast, from site selection to clean-up. It's essential for all members of the blasting crew …
Introduction. As the mining method is turning from open pit mining to sag by mining, vertical height of open-pit mine slope continues to increase, the slope deformation and failure mode has close relationship with regional geological structure characteristics and the rock mass structure feature, the stability is influenced largely by rock mass, …
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 …
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. It often results in high productivity and requires large capital investments, low operating costs, and good safety conditions. The main …
Hazards and risks associated with open-pit mining include cave-ins, equipment accidents, and exposure to dust and toxic substances. Essential safety measures for workers include proper training, personal protective …
Jianshan open-pit was 0–3.6m, but the blasting did not cause overall damage to the adjacent high and steep slopes. In the future, this model can be used to predict rock
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 ...
Air decking is a widely used controlled blasting technique that requires an air space in the blast hole above the explosive charge [5].The purpose of this air space, called a deck or air-deck, is to allow for the gases generated during the detonation process to fill the void instead of being forced into the adjacent rock mass [5].A conceptual diagram of …
The existence of burnt rock causes the bench deep hole blasting operation in the open-pit mine fire area to be affected by joints and fissures, and the blasting effect is not ideal, which is an ...
The blasting operations in open-pit mines are one of the most sensitive and complex mining methods which are defined under special circumstances and specific purposes.
To ensure that the mining steps of deep concave open-pit coal mines with heterogeneous complex rock masses in arid areas are safely bounded by the design requirements and form a fixed side wall ...
On lithium pit mines, formed benches of a certain height and slope angle, must ensure physical stability of the open mine pit and smooth running of mining work to excavate, load and transport the ...
One of the most commonly used criteria with us for the assessment of shock wave intensity induced by blasting has been established by the Institute of Physics of the Earth, …
1. Introduction. Since the 20th century, the heights of slopes in open-pit mines have increased all over the world (Zhang et al., 2012).Examples include the Bingham Canyon copper mine, with a slope height of about 1000 m in the United States; the Udachnaya pipe diamond mine, with a slope height of about 600 m in Russia; and the …
In China, mining blasting vibration has seriously threatened the safety and stability of high and steep rock slopes. In this paper, taking the east mining area of Jianshan Phosphorus Mine as the ...
Based on the blasting technology in the south region in Anqian open-pit mine, a generalized three-dimensional bench blasting model with 3 rows and 21 bore holes is set up, and the complete process ...
2.2 Modelling of Gun-Hole Arrangement along the Towards. According to the specific conditions of the mine along the towards of the arrangement of holes. As shown …
The Qidashan open-pit mine is adjacent to the Lishan District residential area in Anshan City, with many residential buildings close to the pit boundary. The current pit is northwest–southeast trending, with a length of roughly 3400 m and a width ranging between 800 and 1200 m, and has been mined to a depth of −230 m ( Fig. 1 b).
Welcome back to the surface mining model. In the previous topic, we learned about different types of surface mining operations, about equipment, about different methods that are commonly used to extract coal or different ore deposits. It's not difficult to understand that mining is one of the most dangerous working environments in the world …
Mining activities and civil projects are carried out using one of the most important operations, namely rock blasting, as a wide and economical way to rock breakage and displacement of them 1.In ...
Abstract. In China, mining blasting vibration has seriously threatened the safety and stability of high and steep rock slopes. In this paper, taking the east mining area of Jianshan Phosphorus Mine as the research background, combined with field survey, field blasting test, numerical simulation and theoretical analysis, systematically studied the …
To achieve the desired blasting effect, a high-velocity emulsion explosive with a cartridge diameter (d) of 140 (mm) and ql of 11.4 (kg/m) is used. Considering the …
(a) Schematic of the overlap and flight path design for pit wall mapping. (b) Flight plan design for Mine D; the flight paths are shown in magenta, and the area of interest is outlined in red with ...
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 …
The optimization of blasting operations greatly benefits from the prediction of rock fragmentation. The main factors that affect fragmentation are rock mass characteristics, blast geometry, and explosive properties. This paper is a step towards the implementation of machine learning and deep learning algorithms for predicting the …
In open pit mines, the blasting operation should be effectively optimized at the lowest possible total cost, providing technical specifications and the required safety norms.
The research results show that the impact depth of mining blasting in the Jianshan open-pit on the adjacent high and steep slope is 0–3.6 m, but the blasting has almost no damage to the deeper rock …
Safety Rules in Open-Pit Mining Part II Blasting Practices and Safety. When it comes to mining operations, blasting is an essential practice used to break down rock material. While blasting is a necessary process, it also comes with a high degree of risk and requires extreme precision to avoid accidents.
TLDR. The paper presents the method for the support of occupational risk management in quarry blasting operations based on a modified FMECA algorithm …
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 ...
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".
