9 Common Excavation Hazards and their Preventive Measures …

This article discusses the 9 most common excavation hazards and their preventive measures. 1. Location of Machinery and Tools ... Blasting for the building's foundation is prohibited unless special permission is obtained from the authority. ... During the excavation process, for the safety of the public and the workmen, fencing shall be …

Enhancing rock fragmentation assessment in mine blasting …

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 …

Blasting vibration response and safety control of …

In practical blasting engineering, the variations in blast-ing vibration velocity, vibration frequency, and duration are often studied through on-site monitoring. Jayasinghe et al. …

Application of controlled blasting technology in mountain …

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 …

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.

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.

Influence and safety control of blasting vibration on existing lining

[1] Jiang N and Zhou C B 2012 Blasting vibration safety criterion for a tunnel liner structure Tunn. Undergr. Sp. Tech. 32 52-7 Crossref; Google Scholar [2] Yu H T, Yuan Y, Yu G X et al 2014 Evaluation of influence of vibrations generated by blasting construction on an existing tunnel in soft soils Tunn. Undergr. Sp. Tech. 43 59-66 …

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 …

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 ...

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 …

Quarrying of Stones

The process of blasting must be done with proper safety measures. Blasting is adopted when large scale excavation of stones is to be done. Quarrying by blasting Operations involved in blasting. The four main operations involved in blasting are boring, charging, tamping and fining. Boring: Holes are drilled or bored in the rock.

Blasting vibration limits for quarries and civil construction projects

The selection of appropriate blasting vibration limits for civil construction projects and quarry operations has a major influence on a project?s overall cost, duration, and environmental impact. In some cases, the application of an overly conservative limit may affect a project?s financial viability to a point where it may not even commence, …

Drill and Blast | Mining Methods | American Mine …

Drill and blast mining is the most commonly used mining excavation method in the world. Drill and Blast mining is extremely popular for numerous reasons, such as its cost, simplicity, and effectiveness.In this …

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 …

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 …

Vibration response and safety control for blasting vibration …

Numerous studies have also been conducted on the safe control standards and measures of blasting vibration. Shi et al. (2019) investigated an underground pipeline's vibration velocity control standard subject to the blast loading of an adjacent tunnel. Moreover, Shan et al. (2023) studied the blasting safety control of a mountain …

Excavation Safety: Best Work Practices for Excavation …

Learn how to prevent accidents and protect workers in excavation work by identifying and managing hazards, following safe work procedures, and using PPE. Find out when excavation is high-risk construction work and who is responsible for ensuring …

Blasting Best Practices | T.M.I.

Scattered projectiles can strike workers or structures, and fly-rock is a serious consideration in explosion projects. Muffle blasting assembles protective gear on the blasting site to catch as much debris as possible. Muffle blasting incorporates blast mats to interfere with the usual tossed shards of rock and particles.

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.

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 …

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 …

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 …

Microseismic Monitoring of Rock Mass Fracture Response to Blasting …

Large underground caverns are characterized by high geostress, high sidewalls and complex geological conditions, which make the rock masses suffer a series of failures in the process of excavation. The excavation of the large underground powerhouse of the Baihetan Hydropower Station in China is based on the drilling and …

Dynamic response and safety control of civil air defense …

DOI: 10.1016/J.TUST.2021.103879 Corpus ID: 233553193; Dynamic response and safety control of civil air defense tunnel under excavation blasting of subway tunnel @article{Zhang2021DynamicRA, title={Dynamic response and safety control of civil air defense tunnel under excavation blasting of subway tunnel}, author={Zhen Zhang and …

Optimization of Blasting Parameters Considering Both …

This phenomenon not only affects the safety and stability of the tunnel excavation but also seriously increases the construction cost. Based on a short mountain hard rock tunnel project in southwest China, this paper studies the effect of blasting construction on the blasting vibration of adjacent structures and the influence of tunnel …

Blasting vibration response and safety control of …

range inuenced by tunnel blasting vibration is analyzed. In addition, the safety distance of controlled blasting and the maximum charge per delay charge are determined to provide a reference for the optimization of the blasting construction. Project background and monitoring plan Project overview The Chong-Li Tunnel is located in Chong-Li District,

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 …

Applied Sciences | Free Full-Text | Dynamic Response and …

However, in actual engineering practice, traditional blasting techniques frequently encounter issues such as over-excavation and inaccurate excavation pit …

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 …

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 ...

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 …

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 …

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

A deep dive into tunnel blasting studies between 2000 and …

The results indicated that the safety of an existing tunnel is often affected by blasting vibrations from adjacent tunnel excavation. By considering the threshold peak …

BLASTING PLAN

The safety measures discussed in this section are intended to prevent theft and/or vandalism of the explosive materials, protect them against fire, and to prevent personal injury and property damage. These measures are intended as general guidelines. For specific information on blasting safety, refer to Chapters 25 and 27 and Appendix B of