Results from findings revealed a new algorithm for calculating parameters for drawing up the passport of drilling-and-blasting operations during underground mining. Jahed et al. (2015) predicted the blasting environmental impacts in granite quarry in Malaysia. They investigated 166 blasting operations at four granite quarry sites.

The roles of the blast charger and approved handler in charge of the blast should be appointed by the mine operator. 6.3.1 INDIvIDUAL bLAST rISK ASSeSSmeNT A formal risk assessment should be completed for each blast, identifying the hazards and controls at each stage, including the extent of the blast exclusion zone during the firing sequence.

walls. Quarry operators pump this water out of the excavation to allow for extraction (blasting and recovering the bedrock) on a dry quarry floor. Groundwater seeping into the excavation from water-bearing breaks (fractures) in the bedrock lowers the water table to the depth of the fracture break, releasing the water into the quarry. This does

Blasting is the preferred method of extracting rock in a quarry operation, the consequences of which can lead to environmental and property damage, and to injury or death of human and non-human life.

Therefore, when analysing vibration levels and selecting safe limits for a quarry operation or construction project, it is very …

1926.909 (e) Before firing an underground blast, warning shall be given, and all possible entries into the blasting area, and any entrances to any working place where a drift, raise, or other opening is about to hole through, shall be carefully guarded. The blaster shall make sure that all employees are out of the blast area before firing a blast.

Blasting quarry operation in the vicinity of residential areas may cause critical environmental issues. Environmental problems such as flyrock, air overpressure, ground vibration, and dust and fumes may happen by blasting works due to several causes such as extra explosives, blasting design, the distance between the blast-face and …

Semantic Scholar extracted view of "Prediction of blast‑induced ground vibrations in quarry sites: a comparison of GP, RSM and MARS" by S. Hosseini et al. ... Blast-induced ground vibration is one of the most important environmental impacts of blasting operations because it may cause severe damage to structures and plants in …

Blasting is a widely used technique for rock fragmentation in opencast mines and tunneling projects. Ground vibration is one of the most environmental effects produced by blasting operation. Therefore, the proper prediction of blast-induced ground vibrations is essential to identify safety area of blasting. This paper presents a predictive model …

The quarrying technique consists of drilling and blasting to fragment the rock. A large number of charges are fired at one time, producing up to 20,000 tons of broken stone in one blast. The broken stone is crushed into smaller pieces that are separated into uniform classes by screening. William Andrew Hustrulid.

At the studied quarry site, there are 3–4 blasting events per week. A VibraZEB seismograph was used to measure PPV values in each blast operation with various D values. Although 800 m is the minimum distance between the residential area and the quarry free face on the west side, workshops are 400 m away from the southwest of …

Equipment to elevate your blasting operation. The Ranger from Dyno Nobel is a DigiShot blast initiation system with safety and performance at its core. Designed explicitly for the open cut, quarry, civil and construction industries, the Ranger boasts features such as end-of-line voltage validation, automatic detonator detection, and …

A pictorial view of one of the blasting operations carried out during the time of this study is presented in Fig. 4. After taken these readings, the Ewekoro village was visited to see the level of structural damage that might have resulted from the ground vibration induced during the blasting operations in the limestone quarry.

This paper aims to highlight why it is necessary to control dust and erosion, what the consequences of failing to act may be, and how a quarry operator might set about taking control. Failure to limit dust and control erosion on site can have serious consequences, both in terms of operational efficiency and legal or statutory compliance.

LEE'S SUMMIT, Mo. — Starting Wednesday, a company will start using explosives to bust up a long-dormant rock quarry in Lee's Summit, eventually clearing the land for future development. But ...

In rock quarry blasting, only 20–30 % of the energy produced by explosives is utilized to fragment and displace the rock mass. The rest of the energy is wasted and produces undesirable environmental impacts such as ground vibration, air overpressure (AOp), flyrock, and back-break (Segarra et al. 2010; Monjezi et al. 2012; Raina et al. …

The employer must also maintain an accurate running inventory of all explosives and blasting agents stored on the operation. Sec. 1926.909(a)--Employers must post a code of blasting agents on one or more conspicuous places at the operation. All employees also shall familiarize themselves with the code and conform to it at all times.

Quarrying by blasting involves a series of systematic operations such as drilling of blast-holes, charging of blast-holes and firing the shots. (1) Drilling of blast-holes: A blast-hole is a hole of suitable diameter and depth driven at a properly selected location on a rock for being charged with an explosive.

Blast-induced ground vibration is one of the most important environmental impacts of blasting operations because it may cause severe damage to structures and plants in nearby environment. Estimation of ground vibration levels induced by blasting has vital importance for restricting the environmental effects of blasting operations. Several …

The ground vibration of impacts caused by quarry-blasting operation in the vicinity of buildings and structures has been studied by Kuzu and Ergin (2005). Singh et al. (2005) have investigated the ...

Blasting operations at surface mineral workings were controlled by the Quarries (Explosives) Regulations 1988. These regulations detailed the duties of the site owner, manager and shotfirer in the conduct of blasting operations. The health and safety implications of general quarry operations were controlled by The Quarries …

In such a case when it is located far away, the cost of transport of stone from the quarry to constructional sites may become too heavy. At the same time, a quarry must not be located very close to a town because …

Terri Isenburg holds a sign opposing the proposed Gales Ferry Intermodal rock quarry operation in Gales Ferry during a public hearing Thursday, Jan. 11, 2024, at the Ledyard Middle School.

P&Q University Lesson 4: Drilling & Blasting. By PQ Staff | August 28, 2019. The initial production steps in a quarry operation – drilling and blasting ­– can significantly impact the productivity and costs of most downstream operations, including loading, hauling, crushing and screening, and … See more

Problem statement: One of the major environmental concerns related to blasting operation in mining and civil engineering projects is ground vibration. Approach: This study presented an assessment of ground vibrations caused by the blasting experiments at a marlstone quarry in northern Italy. The primary goal of this study was to determine the vibration …

As quar. Drilling and blasting is one of the first operations to be carried out in a quarry to gain the material for further processing. The vital process often starts with a detailed survey of the quarry face, which will enable the explosives engineer to design the blast and to plot where the shot holes should be drilled, enabling the task to ...

In quarry operations, blasting consists of drilling several rows of blast-holes almost parallel to the free face of the bench. These operations create several environmental impacts such as air overpressure, ground vibration, flyrock, and back-break around the blasting zone (Monjezi and Dehghani 2008 ; Fisne et al. 2011 ; Jahed …

To optimize blast size to minimize the overall cost per tonne of blasted rock. To reduce blast days per calendar year. To deliver the required volume and blend of raw …

File Pic. A 32-year-old worker was killed and two others suffered injuries after stones fell on them during a blasting operation at a quarry in Navi Mumbai township, police said on Tuesday ...

The safe blast parameters which minimize the environmental effect were determined for the Saribayir quarry. Keywords Blasting Æ Vibration Æ Quarry Æ Vibration prediction loosen the rock. This may cause an environmental problem if the operation is not planned well or close to buildings and other structures.