safety measures for mountain excavation and blasting

Optimization of Blasting Parameters Considering Both …

According to the analysis results of monitoring data and the safety allowance standard for blasting vibration (GB6722-2014), blasting technical …

Safety assessment of upper water pipeline under the blasting vibration

Request PDF | On Jun 1, 2019, Y.Q. Xia and others published Safety assessment of upper water pipeline under the blasting vibration induced by Subway tunnel excavation | Find, read and cite all the ...

Vibration response and safety control for blasting vibration …

DOI: 10.1016/j.undsp.2023.08.011 Corpus ID: 263245076; Vibration response and safety control for blasting vibration of the existing tunnel with defects @article{Xia2023VibrationRA, title={Vibration response and safety control for blasting vibration of the existing tunnel with defects}, author={Junying Xia and Bo Wang and …

Blasting profile evaluation of sand-mud interbedded

The sand-mud interbedded surrounding rock contains discontinuities, such as horizontal bedding, joints, weak planes and weak interlayers. Drilling and blasting construction in this kind of ...

Blasting excavation and stability control technology for …

After blasting excavation, safety. factors changed from 1.13 to 0.99 with the di ... contour blasting or other control measures are. applied to restrain the harmful e ...

Challenges of, Progress in, and Prospects of Ultra-Long Deep …

Furthermore, to prevent extreme situations, research on emergency handling measures for TBM tunnel excavation under complex geological …

Numerical and Field Measurement Investigation on …

Besides, three major challenges should be considered: complex terrain conditions, difficulties in the blasting excavation of anchors, and the extremely high risk of construction. Therefore, comprehensive risk control measures using the methods of hierarchical excavation and minimum charge blasting are put forward.

Appendix J General Blasting Plan 2020 7-31-20

The Mountain Valley Pipeline General Blasting Plan (Plan) outlines the procedures and safety measures that the contractor will adhere to while implementing blasting activities during the ... and applied toward an appropriate bedrock excavation method. The hard and intact nature of the unweathered sedimentary bedrock …

A New Safety Control Method of Blasting Excavation in …

In this paper, a new safety control method of the jointed slope under blasting excavation is presented. The spatial distribution of blasting damage and time-history characteristic of dynamic stability around the joint were investigated carefully based on the secondary development of the explicit FE code, LS-DYNA. Results clearly indicated that the …

Precision Rock Excavation: Beyond Controlled Blasting and …

The strictness of the result of an excavation, whether mechanical or by means of explosives, is naturally conditioned by its objective and, therefore, by the type of technique applied to achieve it. To attain the best results in terms of rock breakage, and with respect to the final profile, it is important to evaluate the specific excavation energy and its …

Maximizing Efficiency in Blasting Techniques: A

Schematic Diagram of Step Elements for Open-Air Deep Hole Blasting Note: In the figure, H is the height of the step; W1 is the chassis resistance line of the front row cannon holes; L is the drilling depth; L1 is the length of the medicine; L2 is the blockage length; Pole distance; B is the row distance; B is the safe distance from the front row …

Drilling and Blasting

Safe mining operations through technological advancement. Moshood Onifade, ... Amtenge Penda Shivute, in Process Safety and Environmental Protection, 2023. 3.1 Drilling and blasting. Drilling and blasting in mining are conducted for rock fragmentation to allow easier material handling for comminution. Despite the relevance of rock fragmentation in …

Study on Influence of Slope Blasting Excavation on Stability …

Through mechanical analysis, combined with the instability mode and failure mechanism of dangerous rock mass, taking into the consideration of the influence of blasting excavation of the dangerous rock mass on the dynamic characteristics of it based on the limiting equilibrium method, the stability equations of dangerous rock mass at …

How to Carry out Controlled Blasting of Rocks? [PDF]

Cushion blasting is like smooth wall blasting, a single row of holes is drilled along the excavation line, loaded with light, well-distributed charges, and fired after the main excavation is removed. In cushion blasting, the charged holes are further decoupled by reducing the diameter or using stemming material of crushed stone or sand to ...

Application of controlled blasting technology in mountain excavation

In order to control the impact of rolling stones, blasting vibration, blasting flying stones on surrounding buildings, bridges and culverts, pre-embedded industrial water pipes, highways and roadbeds during the excavation of mountain bodies, precise controlled blasting and comprehensive vibration reduction techniques such as weak …

Application of controlled blasting technology in mountain excavation

This technology guarantees that the excavation of mountain body will not affect the normal opening of frontal expressway and county road, and will not affect the safety of production of the company.

Dynamic response characteristics of a rock slope under blasting excavation

Pre-splitting blasting technology is used for mining near slopes, and No. 2 rock emulsion explosive is used for blasting operations. The density of this explosive is 1.1 g/cm 3.The detonation velocity is greater than or equal to 3200 m/s, the specific charge is 0.4 kg/m 3.The blasthole diameter is 90 mm, the hole depth is 10 m, and the subdrilling …

Introduction to Underground Excavation by Drilling and …

16.1.3 Drilling Equipment, Explosives, and Blasting Design The drilling equipment and explosive products and initiation accessories are described in Chaps. 2, 3, and 4. The blasting design of underground excavation of D & B will be discussed in detail in the later chapters. Fig. 16.1 Drilling and blasting cycle for underground excavation.

A deep dive into tunnel blasting studies between 2000 and …

Damage control of rock mass, threshold PPV, rock damage characteristics, the safety of tunnels under blasting excavation: ... PPV is a direct measure of the strength of the blasting vibrations, ... Optimization of smooth blasting parameters for mountain tunnel construction with specified control indices based on a GA and ISVR …

Sandblasting Hazards: Safety Measures To Take

Control measures: Hearing protection, safety training, and equipment maintenance. ... This includes understanding the potential dangers of specific blasting materials, as outlined in safety data sheets, and the measures necessary to stay safe. Training should also cover the safe operation of machinery and the importance of …

Blasting Safety: Avoiding Blasting Disasters

1. Once the air is safe to breathe, it's time for the Blaster-in-Charge to inspect their work. During this inspection, they should assess the following:
2. Any misfire or other dangerous circumstances must be rectified or safeguarded.
3. After the area is free from any risks to pedestrians, traffic, and personnel on-site, the BIC should signal safety, allowing those posted as guards to be relieved.

1. Once the air is safe to breathe, it's time for the Blaster-in-Charge to inspect their work. During this inspection, they should assess the following:
2. Any misfire or other dangerous circumstances must be rectified or safeguarded.
3. After the area is free from any risks to pedestrians, traffic, and personnel on-site, the BIC should signal safety, allowing those posted as guards to be relieved.
4. A dependable lightning detector is essential to keep watch of any possible electric storms.

A review of some nonexplosive alternative methods to …

The conventional blasting rock excavation method is the main means of rock breakage because of its high productivity, and it is relatively inexpensive compared to other methods. However, it raises safety concerns and can negatively impact the environment. The major disturbances that may be induced by this method include flyrock, gas emissions, and …

Blasting Excavation and Vibration Monitoring Design for

Seismic shock is one of the main hazards of blasting engineering, therefore, for the safety guarantee of buildings in near-field blasting, tests and controlling measures on blasting vibration ...

Vibration response and evaluation system of cross-tunnel blasting

Based on the Cao Mao mountain cross-tunnel project, on-site monitoring and theoretical study of the blasting vibration effect of the cross-tunnel were carried out, and the dynamic response of the existing tunnel under instantaneous explosion loads was analyzed. The equivalent radius of action (re) was introduced to replace the maximum …

Safety Evaluation and Application of Blasting Vibration …

Science-based and accurate means for the evaluation of vibration caused by blasting are important for controlling hazards associated with blasting. This paper proposes a system for evaluating safety as it relates to blasting vibration. The system applies the Hilbert–Huang transform (HHT) energy analysis method combined with the …

IS 3764 (1992): Code of safety for excavation work

IS 3764 (1992): Code of safety for excavation work [CED 29: Construction Management including safety in Construction] IS 3764 : 1992 ... Inclusion of safety measures against poisonous plants and some recommendations regarding use of lifelines; and ... 1986 Safety code for blasting and related drilling operation 3 TERMINOLOGY

What You Need To Know About Drilling and Blasting

Drilling and blasting is also a very effective process when compared with bored tunneling by TBM, since blasting generally results in higher duration of vibration levels. The excavation rate is also less than TBM (usually 3 to 5m a day). Drilling and blasting offer the greatest opportunity to optimize quarry operations and control costs.

Blasting vibration response and safety control of mountain …

In this paper, a systematic study of blasting vibration in a mountain tunnel is conducted from the perspectives of field monitoring and numerical simulation. To …

10 Common Excavation Hazards and Control Measures

By considering these additional hazards and implementing appropriate control measures, excavation work can be conducted safely and efficiently, protecting the health and well-being of workers and the success of the excavation project. ... It is essential to prioritize safety in excavation work, and these control measures provide a …

JAn 203 1 of 21 Surface Blasting Safety Procedures

Surface Blasting Safety Procedures Blasting Materials Surface delays, detonators or blasting caps, boosters, safety fuse, down-line and other explosives used for blasting. Blast Site The area explosive materials are handled during loading that includes a 30 foot perimeter around the loaded blast holes. This perimeter must be demarcated …