Application of advanced blasting methods in mining
(Baonghean.vn) -Most of the quarries are currently exploited by blasting method, but the exploitation process is not safe, accidents still occur and affect the surrounding environment. In the past 2 years, 99 Construction Materials Production and Processing Joint Stock Company has used Visai blasting method very effectively and safely.
Construction Materials Production and Processing Company 99 is licensed to exploit stone in the Len Muoi Hai valley area (Tru Son commune, Do Luong). Over the past 2 years, the Company has applied the visai blasting method to ensure safety during the exploitation process.
Some large quarries in Quynh Luu have not yet applied the visai blasting method.
Mr. Nguyen Quoc Khanh - Chairman of the Board of Directors of the Company, said: The Visai electric blasting method is applied to large open-pit quarries, with the ability to control the level of rock breakage, increase the time of explosion in the rock mass, without increasing the amount of explosives, so this method will reduce drilling and blasting costs, reduce vibration and flying rocks, and ensure safety for workers and the surrounding working environment. To use the Visai blasting method effectively, the Company has trained 5 specialized staff: blasting commander, network connection, powder loading... With the process: after completing the explosion network, a safety warning is given, then the electricity is used to detonate.
In 2013, the Company will implement a plan to exploit rock from the top down, ensuring absolute safety in mining. To implement this plan, a large amount of money is required, the total estimated value is over 26 billion VND to open a service road to bring machinery from the foot of the dam up for exploitation. In 2012, the Company has renovated the site, designed a drilling and blasting diagram, and used the pouring method. This plan must have a high and safe embankment according to standards.
It is known that after using the method of producing pouring troughs, the capacity reached over 20,000 m3/month. However, with the large renovation and investment costs, in addition to the company's efforts, it is very necessary to have preferential loan mechanisms from banks.
Van Truong
