Construction Project

Geological hazards, a geological term, refer to geological processes (phenomena) formed under the influence of natural or human factors that cause damage and loss to human life, property, and the environment. Examples include landslides, mudslides, debris flows, ground fissures, soil erosion, desertification and marshland formation, soil salinization, as well as earthquakes, volcanoes, and geothermal hazards. Geological hazard monitoring equipment and data are becoming increasingly massive as the monitoring scope expands. Traditional office management methods are extremely labor-intensive, necessitating modern database management tools that can automatically query data for easier management. Wuhan Rock Technology's Automated Geological Hazard Monitoring System is a comprehensive system developed by Wuhan Rock Technology Co., Ltd., utilizing the latest technologies such as GNSS high-precision positioning, wireless communication, database technology, and GNSS communication technology, combined with extensive construction experience and integrated power supply and lightning protection systems. This system is suitable for geological hazard monitoring. Rock Technology's geological hazard monitoring system solution lays the foundation for improving the quality, efficiency, and management level of geological hazard prevention and control work. It uses automated methods, combined with professional systems and big data, to predict and analyze results to support decision-making.

• Surface displacement monitoring (Robotic total station, GNSS, wire-type displacement gauge)
• Deep horizontal displacement monitoring (array displacement gauge, fixed inclinometer)
• Groundwater level monitoring (water level gauge)
• Surface crack monitoring (crack gauge, total station)
• Soil moisture content monitoring (soil moisture meter)
• Debris flow monitoring (debris flow mud level monitor)
• Vibration acceleration monitoring (blasting vibration meter, accelerometer)
• Lateral earth pressure monitoring (earth pressure cell)
• Rainfall monitoring (six-parameter weather station)
• Stratified settlement (stratified settlement meter)

This expressway is an important component of Hunan Province's expressway network. It begins at Yumu Village, Yumu Mountain Town, Zhengxiang District, Hengyang City, connecting to the Yueyang-Linyi Expressway. It passes through six counties (cities/districts), including Zhengxiang District, Qidong County, Qiyang City, and Lengshuitan District, intersecting with the Shaoyang-Yongzhou Expressway. It ends at Wangjiapu, north of Lengshuitan District, Yongzhou City, intersecting with the Erguang Expressway and connecting to the Yongling Expressway. The main line is 106.227 kilometers long, with a total estimated investment of 14.843 billion yuan, and is scheduled to be completed and open to traffic in 2024. The project adopts a two-way four-lane expressway standard. The Qishan Tunnel, located at the border of Qiyang and Qidong on the Hengyang-Yongzhou Expressway, is the only tunnel on this expressway. Due to the construction work involving breaking through the mountain at the tunnel entrance, a high slope of approximately 20 meters in height has been formed at the tunnel entrance.

To ensure the normal operation of the expressway, real-time monitoring of the high slope is necessary to understand its safety status.

An automated monitoring system for a high slope on a highway acquires physical quantities through various on-site monitoring sensors. It utilizes a QimMIoT module, an integrated Internet of Things (IoT) data acquisition, storage, and transmission module, to collect and transmit monitoring data in real time. The QimMoS monitoring software manages and analyzes the monitoring data, enabling remote real-time control and the publication of monitoring results. This system achieves data acquisition, analysis, and display of physical quantities such as surface displacement, deep displacement, and regional meteorological parameters of the entire high slope, thereby determining the slope's safety status and providing timely warnings of potential risks.

The ADM series array displacement gauges are used for deep displacement monitoring of high slopes:

The ADM series array displacement gauge is a flexible and standard 3D measurement system. It uses a dense array of MEMS (Micro-Electro-Mechanical Systems) and a validated model calculation program to measure 2D and 3D deformation values. The ADM series array displacement gauge has no priority axis, is freely flexible, and can be installed vertically, horizontally, or in a ring. The ADM series array displacement gauge measures the changes in acceleration along different axes to reflect the changes in the angle between the corresponding axis and the direction of gravity, and calculates the displacement change of the corresponding node based on the changes in angle. The ADM series array displacement gauge utilizes advanced measurement and control technology, gravity acceleration measurement technology, sensor temperature compensation technology, and core algorithm model technology to achieve real-time online monitoring of the X, Y, and Z three-dimensional deformation of the monitored object.

The QM-MR5000 GNSS receiver, used for high slope surface displacement monitoring, is a new generation of universal GNSS receiver designed for geological disaster monitoring applications. The receiver features a low-power design and automatically switches operating modes based on the built-in MEMS sensors and changes in the monitoring point's location, further reducing the power consumption of the monitoring station system. The QM-MR5000 offers a variety of wireless communication methods and can be paired with a cloud platform for remote monitoring and management, thereby reducing the overall construction and operating costs of the monitoring system. Its highly integrated all-in-one design facilitates easy installation and supports IP68 waterproof and dustproof protection, making it suitable for various harsh field environments.

Rainfall monitoring on high slopes utilizes piezoelectric rain gauges. These gauges employ piezoelectric ceramic kinetic energy sensing, identifying rainfall based on the impact force of falling raindrops. They can monitor rainfall ranging from light to torrential downpours. The piezoelectric rain sensor measures the weight of a single raindrop to calculate the total rainfall. Raindrops are affected by their weight and air resistance during descent, reaching a constant velocity upon impact. Using the formula P=mv, the weight of the raindrop can be calculated by measuring the impact, thus determining the continuous rainfall. The piezoelectric rain gauges selected for this project have no mechanical parts, making them more robust, durable, sensitive, and reliable than traditional rain gauges.