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This is a basic guide for borehole drilling area and related industry, we do not intended to consider the legislation of any particular country, but to outline some issues and good drilling practices, which will make a safer working environment for blasting drilling and water drilling or Geological drilling Drilling Safety Issues Safety is an […]

Why needs reverse circulation drilling? When drilling the hole of diameter >250mm, which the annular area between the drill pipe and inner surface of borehole is very big. If using direct circulation drilling method, it needs very powerful compressor with high air flow(even 2 – 3 compressors) to get enough flushing speed to below all […]

Wireline core drilling method can take out the core without having all the drill rod out of the borehole, which can have high drilling efficiency and low labor intensity. Therefore it is the most popular among all core drilling method currently Wireline Drilling Tools Configuration Wireline tools mainly consist of rope, overshot assembly head assembly, […]

Due to only one free surface underground. Underground Blasting is the main method to cave the tunnel, inclined well and vertical well or for underground mining etc. The underground drill rig is most suitable for this application. Flowing topics are discussed in details: Introduction Cut design Parallel cut blasting Inclined cut blasting Blasting geometry Drill […]

Drilling and Blasting Drilling and blasting are all about putting the right amount of energy in the right place at the right time at minimum cost to achieve maximum control over the shot rock volume and the resulting particle size distribution in the muck pile Mineral/Ore Mined using the Hardrock Blasthole Drill Heavy duty Rotary […]

Drilling Bit Hole Opener How to improve drilling efficiency, especially for big diameter hole, is the hot topic for all borehole drillers. By reaming, it is a good way to Get big diameter borehole.Roller type hole opener is the best one among all the hole openers. It can improve the drilling efficiency by 20% compared […]

General Drill Rig stability is the rig capacity, which it would not turn over or lateral sliding during tramming and drilling. Rig stability does not only affect drills’ safety when drilling or tramming, it also influence the  drilling productivity click here and operator’s heath. Drill rig’s performance is based on its stability, therefore, it is […]

In these series article, we will introduce the key knowledge on blast drilling according to our many years practical experience in Hardrock Drills. Below is the lecture overview which will be introduced item by item, today we will start from Modern systems for surface blasting drilling. Lecture Overview Modern systems for surface blasting drilling Blast […]

Lecture Overview Introduction Pit Geometry Interaction deposit geometry Design and management Overall process Interaction of distinct operations Machinery – Drill Rigs, Loaders, Excavators etc. General appraisal  History From ancient times to now  Classifications By operation size By material By level of mechanization Operation Size Huge operations 50 Mio t and more Big operations 10 Miot Standard […]

In the last article Hardrock Mining Drill Rig Selection – Part One, we introduce field application for Mining Drill Rig and the target for all application(Minimum Cost and Maximum Output), in today’s blog, we will give more detailed suggestions how to select proper rig for specific application. Blasthole Drilling Operations Priority Focus on budgets and […]