Algorithm for Automatic Rod Feeding and Positioning Error …
The algorithm aims to address the problem of significant deviations between the theoretical and target rod feeding positions, which often result in the failure of rod feeding operations in coal mine underground drilling robots. By implementing this algorithm, the positioning accuracy of coal mine underground drilling robots can be improved.
Optimization Design of the Non-magnetic Drill Rod for …
In the process of directional drilling, the non-magnetic drill rod is required to bear the torque and the pull-up pressure of the drill rig on the one hand, and the high-pressure water with the pressure of up to 10 MPa is required for the hole bottom motor on the other hand, which requires the material of the non-magnetic drill rod to have higher …
Auger Drill Rod
Model : Auger Drill Rod Size: 22mm and 25mm Dia Length: 1000mm to 2100mm Material: High Tensile Steel Types: Solid or with flushing hole Shank Size: 25mm and 39.7mm Make: SDC Suitable for: Roof Drilling In Underground Coal Mines Product Flyer Order Form
Research on Automatic Counting of Drill Pipes for …
Citation: Chen, T.; Dong, L.; She, X. Research on Automatic Counting of Drill Pipes for Underground Gas Drainage in Coal Mines Based on YOLOv7-GFCA Model. Appl. Sci ...
Rock tools
offers a complete range of rock tools – for surface and underground mining, and for construction. We know the field, and our market leading equipment is designed based on years of research, experience and customer feedback.
2024 Mining Terms Explained
Cable bolt - A steel cable cemented into a drill hole to lend support in blocky ground.; Cage - The conveyance used to transport men and equipment between the surface and the mine levels.; Calcine - Concentrate that is ready for smelting.; Call - An option to buy shares at a specified price.; Capitalization - The value financial markets put …
Construction Technology and Equipment for Gas Drainage …
The gas drainage with boreholes is an important means to control mine gas.The total borehole drilling length for the mine gas control in China underground mines was over 150 million m/year.Those boreholes drilled were mainly completed with the domestic equipment and the rotary drilling method.The max length of a borehole was reached to …
The Underground Directional Drilling Technology and …
The underground nearly-horizontal directional drilling technology and equipments, which are firstly developed by Xi'an Research Institute of China Coal Technology & Engineering Group from 2005 ...
Drill Rigs Archives
The rig has established its abilities in underground coal mines, building construction sites and in construction tunnels. The drifter is fitted with a male R32 shank and is ideal for drilling from Ø45 to Ø71mm to a …
Glossary of Mining Terms
Auger Drill rod assist in removal of cuttings along the drill rod and exit the drilled – A rotary drill rod for soft materials that uses an external screw to hole B Backfill – – Waste material used to support the walIs of a stope and provide a working platform after removal of ore Balk/baulk Bar, cross-bar, crown, half-round crown, half-round
Algorithm for Automatic Rod Feeding and Positioning Error …
In the pursuit of automating the entire underground drilling process in coal mines, the automatic rod feeding technology of drilling robots plays a crucial role. However, the current lack of positional accuracy in automatic rod feeding leads to frequent accidents. To address this issue, this paper p …
Investigation on sticking for drill rod based on finite element
In order to find out the essence of sticking for drilling rod applied on underground of coal mine under geological condition of gas outburst, 3D model for a kind of hydraulic drill machine is ...
PID and compliance control-based anti-sticking of drill rod …
Purpose During drilling in coal mines, sticking of drill rod (referred to as SDR in this work) is a potential threat to underground safety. However, no practical measures to deter SDR have been ...
[PDF] Algorithm for Automatic Rod Feeding and Positioning …
This paper presents an algorithm for compensating positioning errors in automatic rod feeding, based on a theoretical mathematical model and manual teaching methods, and demonstrates that it significantly improves the accuracy of rod feeding positions for coal mine underground drilling robots. In the pursuit of automating the …
PID and compliance control-based anti-sticking of drill rod …
Purpose During drilling in coal mines, sticking of drill rod (referred to as SDR in this work) is a potential threat to underground safety. However, no practical measures to deter SDR have been developed yet. The purpose of this study is to develop an anti-SDR strategy using proportional-integral-derivative (PID) and compliance control …
73X9mm Directional Drill Rod for Underground Coal Mines …
73X9mm Directional Drill Rod for Underground Coal Mines Gas Drainage Holes, Find Details and Price about 73X9mm Directional Drill Rod Underground Coal Mines from 73X9mm Directional Drill Rod for Underground Coal Mines Gas Drainage Holes - Shandong Seaco Machinery Equipment Co., Ltd.
(PDF) Theoretical Channel Model and …
The measurement while drilling (MWD) system in underground coal mine currently uses wire for signal transmission. However, it has shortcomings such as strict technical requirements for …
Coal Mining Drilling Underground Drill Rigs, Underground Drilling …
High quality Coal Mining Drilling Underground Drill Rigs, Underground Drilling Equipment from China, China's leading underground drilling equipment product, with strict quality control underground drilling machine factories, producing high quality underground drilling machine products. ... Drill Rod Length: 1000mm: Max Torque: …
Integral Drill Rod
Integral Drill Rod. Compatible with: Rock Drill Hex Size: 22 mm Shank Length: 108 mm or 4 1/4 Inches Flushing Hole: 6mm Tip: Extra Tough Grade Tungsten Carbide Drill Bit Range: 24 - 40 mm Length Range: 400 mm - 6000 mm Suitable for: Granite Quarries, Underground Mining Unique Feature: Waterproof Coating in through hole They are also …
Device and control method for automatic loading and …
Download Citation | On Jul 2, 2021, Yafeng Yao and others published Device and control method for automatic loading and unloading of drill rods of underground drilling rig in …
Diamond Section Drill Rod
Drilling in Coal in Underground Mines Other Names – Coal Drill Rods, 39.7 mm Dia Diamond Section Drill Rods. Rotary Drill Rods for application in Coal, SDC Diamond Section Drill Rods.
The Underground Directional Drilling Technology and Equipments …
Fig.3. Drill rod with cable assembly inserts 2.3. Development of MWD system Real-time measurement is the key to drilling along with the designed trajectory. The MWD system for underground directional drilling in coalmine has been developed, which is composed of upper and lower non-magnetic drill rods, measurement tube, drill rod …
Types of Drilling Methods used in Mining
In this article we will discuss about the types of drilling methods used in mining. The types are: 1. Percussive Drilling 2. Rotary Drilling. Method # 1. Percussive Drilling: In this method which is the oldest one of drilling, the hole is drilled by striking a number at short in intervals on the rock by a chisel-type tool and between the blows the tool is rotated …
PID and compliance control-based anti-sticking of drill rod …
Actual drilling conditions are difficult to accurately simulate in a laboratory; thus, for future work, drilling experiments can be conducted in actual underground coal mines. The PIDC-based anti-SDR strategy proposed in this study satisfactorily controls the rotation motor and feed cylinder and facilitates the feed and rotation movements.
Actual scene of drilling operation in underground coal mine. 1: coal
Download scientific diagram | Actual scene of drilling operation in underground coal mine. 1: coal wall; 2: drill rod; 3: drilling rig; 4: operator. from publication: Investigation on sticking for ...
Underground drill rigs
Underground drill rigs. We engineer an extensive range of underground drill rigs for mining development and production. Available in a variety of feed lengths, boom …
The Underground Directional Drilling Technology and …
The Underground Directional Drilling Technology and ... and coal seam whose hardness factor is greater than 1.5 [3]. ... drill rod to reduce the energy loss of flushing fluid. The strength of ...
Analysis of drilling vibration characteristics of anchoring …
At present, few people have studied the vibration characteristics of parallel drilling systems with multiple anchor rods. For underground coal mines with complex geological conditions, using ...
RETRACTED: Drilling rod target segmentation …
J. Luo et al. / Drilling rod target segmentation recognition based on an improved GAN 5483 Fig. 1. 3D diagram of the drilling rod. in this experiment to label the drilling rods based on their contours. Next, the labeled and saved JSON file was transformed into a binary segmented image in order to produce tag data. Subsequently, the original
Over-core recovery of a drill string bogged in a longhole
All longhole drilling in underground coal mines is now undertaken using directional drilling to provide directional control and progressively define the borehole location relative to mine ... HQ drill rods (88.9 mm OD x 77.7 mm ID) are a standard rod used for over-coring CHD 69.9