International Journal of Earth Sciences and Engineering

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Design and Preliminary Field Experiment of Hydraulic Borehole Mining Tool with Expandable Nozzle


Affiliations
1 College of Construction Engineering, Jilin University, Changchun-130061, China
2 Key Lab of Drilling and Exploitation Technology in Complex Conditions, Ministry of Land and Resource, Changchun-130061, China
3 College of Applied Technology, Jilin University, Changchun-130061, China
 

Hydraulic Borehole Mining (HBM) method is an important mining technology that has advantage for some special ore formation. However, the traditional hydraulic borehole mining tool’s nozzle is fixed that limits the single well ore production. In this paper, hydraulic borehole mining tool with ratchet controlled expandable nozzle was designed. High pressure water channel, ore pulp discharge channel and ratchet controlled expandable nozzle are three important parts in this design process. Then, the tool was conducted preliminary filed experiment in nong’an area and infrared camera was used to observing breaking condition of the wall of experiment hole. The experiments showed that the ratchet controlled expandable nozzle can expand and back in the experiment hole. And the hydraulic borehole mining tool can break the wall of experiment hole obviously. This research is a preliminary study that provides an ideal mining method and mining tool for thin ore formation.

Keywords

Hydraulic Borehole Mining, Expandable Nozzle, Design and Field Experiment, Ore Particles.
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  • Design and Preliminary Field Experiment of Hydraulic Borehole Mining Tool with Expandable Nozzle

Abstract Views: 220  |  PDF Views: 128

Authors

Shuai Gao
College of Construction Engineering, Jilin University, Changchun-130061, China
Chen Chen
Key Lab of Drilling and Exploitation Technology in Complex Conditions, Ministry of Land and Resource, Changchun-130061, China
Gang Li
College of Applied Technology, Jilin University, Changchun-130061, China
Youhong Sun
College of Construction Engineering, Jilin University, Changchun-130061, China

Abstract


Hydraulic Borehole Mining (HBM) method is an important mining technology that has advantage for some special ore formation. However, the traditional hydraulic borehole mining tool’s nozzle is fixed that limits the single well ore production. In this paper, hydraulic borehole mining tool with ratchet controlled expandable nozzle was designed. High pressure water channel, ore pulp discharge channel and ratchet controlled expandable nozzle are three important parts in this design process. Then, the tool was conducted preliminary filed experiment in nong’an area and infrared camera was used to observing breaking condition of the wall of experiment hole. The experiments showed that the ratchet controlled expandable nozzle can expand and back in the experiment hole. And the hydraulic borehole mining tool can break the wall of experiment hole obviously. This research is a preliminary study that provides an ideal mining method and mining tool for thin ore formation.

Keywords


Hydraulic Borehole Mining, Expandable Nozzle, Design and Field Experiment, Ore Particles.