Brief Introduction
XDL-RC series is mainly applied in RC drill,geothermal hole,anchor hole of deep base-ment foundation anchoring and reinforcement groundwork hole. Also, it is used in drilling in the drain hole and large tonnage prestressed anchoring hole of the geotech-nical engineering such as the side slope ofdam construction,railways,highways etc., and the anchoring hole of landslide preventing, pipe roof drill work,grouting reinforce-ment hole,mini foundation pile hole,water well and observation well.
Main Features
Technical parameters |
Item | Unit | XDL-500RC |
Max drilling depth | m | 500 |
Drilling diameter | mm | 105-400 |
Air pressure | Mpa | 1.2-3.5 |
Air consumption | m3/min | 16-55 |
Rod length | m | 3m |
Rod diameter | mm | 102/114mm dual-wall |
Main shaft pressure | T | 7 |
Lifting force | T | 25 |
Fast lifing speed | m/min | 23 |
Rotary torque | N.m | 5000-10000 |
Rotary speed | r/min | 75-150 |
Small winch lifting force | T | 1.5 |
Drilling speed | m/h | 10-35 |
Walking speed | km/h | 2.5 |
Climbing capacity | ° | 21 |
Weight | T | 12 |
Dimension | mm | 7000*2100*2800 |
How Does RC Drilling Work?
The Method
Reverse circulation is achieved by blowing air down the annulus of the rod, the differential pressure creating air lift of the water and cuttings up the inner tube which is inside each rod. It reaches the deflector box at the top of the drill string then moves through a sample hose which is attached to the top of the cyclone.
Internal Workings
The drill cuttings travel around the inside of the cyclone until they fall through an opening at the bottom and are collected in a sample bag. For any drill hole there will be a large number of sample bags, each one marked to record the location and drilling depth that the sample was obtained.
Assays
The collected series of sample bag cuttings are later taken for analysis to determine the mineral composition of the drill hole. The analysis results of each individual bag represents the mineral composition at a particular sample point in the drill hole. Geologists can then survey the drilled ground analysis and make decisions about the value of the overall mineral deposit.
