Intelligent Technology Application of Rotary Drilling Rigs: Three Core Technologies Break the Deadlock of Pile Foundation Construction

Currently, China's infrastructure industry is accelerating its transformation towards refinement, efficiency, and greenness. Pile foundation construction, as the core link of deep infrastructure construction, directly determines the safety of engineering structures and construction progress. The traditional rotary drilling rig operation highly relies on manual operation and experience judgment, which exposes many pain points such as large positioning deviation, unstable drilling quality, low operation and maintenance efficiency, and prominent safety hazards in large-scale projects and complex working conditions. It is difficult to adapt to the high-quality development needs of infrastructure in the new era. The deep integration and application of three intelligent technologies, namely automatic positioning, one click drilling, and remote monitoring, have promoted the leapfrog upgrade of rotary drilling rigs from "manual operation" to "intelligent control". This not only effectively solves the bottleneck of traditional construction, but also promotes the triple improvement of quality, efficiency, and safety in the pile foundation construction industry, becoming an important benchmark for the intelligent transformation of engineering machinery and injecting strong momentum into the high-quality promotion of infrastructure projects.

Automatic positioning technology: precise empowerment, building a solid foundation for pile foundation construction quality

Automatic positioning technology is the fundamental support for the intelligent upgrade of rotary drilling rigs, which solves the industry pain points of low accuracy, low efficiency, and large errors in traditional manual positioning, and builds a solid quality first line of defense for pile foundation construction. This technology takes Beidou high-precision positioning technology as its core, deeply integrates multi-source sensors and IoT communication technology, and constructs a full process closed-loop control system of "perception analysis decision execution". Through the integration of core components such as Beidou high-precision positioning and orientation terminal, GNSS antenna, and dual axis inclination sensor in a high-strength protective box, real-time and accurate monitoring and automatic adjustment of drill pipe position and verticality are achieved. Before starting the homework, the operator can input core parameters such as pile position coordinates and depth through the terminal, and the system automatically plans the optimal homework path, accurately locking the pile position without the need for manual repeated calibration; During the homework process, the dual axis inclination sensor can capture the inclination angle of the drill rod in the X/Y axis direction in real time, automatically calculate the vertical deviation of the pile body, and when the deviation exceeds the preset warning value, the system immediately triggers an audible and visual alarm and automatically adjusts the posture of the drilling rig to ensure that the verticality of the borehole meets industry standards. Relying on this technology, the plane positioning accuracy of rotary drilling rigs can reach ± 2cm, and the elevation accuracy can reach ± 3cm. Even in mountainous areas with complex terrain and signal obstruction, as well as densely populated urban areas, continuous positioning can still be achieved through inertial navigation, reducing the drilling offset rate from the industry average of 8% to 1.2%, greatly reducing the rework rate. It is especially suitable for engineering scenarios such as high-speed railways, bridges, and high-rise buildings that require extremely high pile position accuracy, laying a solid foundation for engineering quality.

One click drilling technology: efficient and convenient, breaking through the bottleneck of construction efficiency

One click drilling technology is the core breakthrough in the intelligent upgrade of rotary drilling rigs, achieving a revolutionary leap from "step-by-step operation" to "one click completion" in pile foundation construction, greatly simplifying the operation process, reducing manual dependence, and balancing construction efficiency and quality stability. This technology integrates full process operation modules such as automatic positioning, intelligent drilling, automatic drilling lifting, and slag discharge. Combined with machine learning algorithms, it accurately identifies the resistance characteristics of different formations such as sand, clay, and hard rock, automatically determines the depth of drilling into the rock, dynamically matches core parameters such as drilling speed, torque, and pressure, and can complete the entire process operation from pile positioning to hole forming without manual intervention by operators. For different geological conditions, the system can automatically switch drilling modes: in hard rock formations, it automatically increases torque and reduces speed to improve rock breaking efficiency; Optimize drilling speed in sand formations, strengthen mud wall protection, and effectively avoid construction accidents such as stuck drilling, buried drilling, and hole collapse. According to actual engineering application data, the rotary drilling rig equipped with one click drilling technology has shortened the single pile construction period by more than 30% compared to traditional equipment, while reducing manual operation errors and increasing the drilling qualification rate to over 99%. In key projects such as the comprehensive pipe gallery in Xiong'an New Area and the Hong Kong Zhuhai Macao Bridge, it has played an important role with efficient and stable performance, significantly saving construction time and labor costs, and solving the industry dilemma of low efficiency in traditional pile foundation construction.

Remote monitoring technology: intelligent control, guarding the bottom line of construction safety

As an important extension of the intelligent application of rotary drilling rigs, remote monitoring technology has achieved remote control of the entire process of equipment operation and maintenance, effectively solving the problems of scattered management, difficult identification of safety hazards, and low operation and maintenance efficiency in traditional construction, and safeguarding the safety bottom line and improving management efficiency for pile foundation construction. This technology relies on the Internet of Things, 4G/5G communication, and AI intelligent algorithms. By installing video surveillance, status sensors, and other devices on the rotary drilling rig, it achieves 7 × 24 uninterrupted monitoring of the equipment's operating status, work process, and on-site environment. The data is transmitted in real-time to the cloud management platform and the mobile end of the management personnel. Management personnel can remotely view equipment operation progress, drill pipe operation parameters, and operator operation standards, real-time grasp of construction site dynamics, and achieve efficient scheduling and management without physically visiting the site. This is especially suitable for scenarios where multiple equipment and multiple construction sites are synchronized, greatly improving management efficiency. In response to equipment abnormalities, the system can capture real-time abnormal parameters such as high hydraulic oil temperature and off load of drill pipes, automatically trigger alarms and push them to the responsible person, and support remote diagnosis. Engineers can identify potential faults in advance, reduce equipment downtime, and lower maintenance costs. In addition, the system also has the functions of pedestrian intrusion warning in the blind area, driver fatigue driving reminder, video playback in the operation process and so on, which can not only prevent the safety accident at the construction site, but also retrieve the video to trace the reason after the accident, clarify the division of responsibility, further strengthen the construction safety defense line, and reduce the operating cost by 15% -25% through data management.

Three major technologies collaborate to empower the intelligent transformation of pile foundation construction

The three intelligent technologies of automatic positioning, one click drilling, and remote monitoring are not independently applied, but are mutually coordinated and deeply integrated to build an intelligent operation system for the entire process of rotary drilling rigs, promoting the comprehensive upgrading of the pile foundation construction industry. Automatic positioning technology provides a precise foundation for one click hole formation, ensuring that the hole position and verticality meet the standards; One click drilling technology relies on automatic positioning to achieve efficient operation and reduce manual intervention; Remote monitoring technology provides real-time control over the application process of the first two technologies, ensuring job safety and stable equipment operation, forming a complete closed loop of "precise positioning, efficient drilling, and intelligent control". Against the backdrop of high-quality development in the infrastructure industry, the application of the three major intelligent technologies not only promotes the upgrading and iteration of rotary drilling equipment itself, but also drives the transformation of pile foundation construction management mode from "human management" to "digital management", realizing the digitization, transparency, and intelligence of the construction process, helping enterprises reduce construction costs, improve engineering quality, and ensure construction safety. In the future, with the continuous integration of technologies such as artificial intelligence and big data, the intelligent technology of rotary drilling rigs will be further upgraded, moving towards unmanned construction and predictive maintenance, injecting more intelligent momentum into the green and efficient development of the infrastructure industry.