Hubei Wuhan developed a dynamic monitoring and warning system for coal mine rockburst

[Chinese instrument network instrument research and development] Impact rock pressure, also known as rock burst, refers to the dynamic phenomenon that the rock mass around the roadway or working face can be instantaneously released due to elastic deformation, resulting in sudden violent destruction, often accompanied by the throwing of coal rock masses. The phenomena of loud noise and air waves are sudden, complex, and extremely destructive. They have always been an important disaster in the field of deep resource exploitation in our country.

How to strengthen early warning and monitoring of rockburst has always been an important issue. Under the new situation of the development of science and technology and the development of the Internet of Things Big Data, the Construction Process Mechanics Group of the Institute of Rock and Soil Mechanics, Chinese Academy of Sciences conducted in-depth studies on three-dimensional stress sensor technology theory, real-time sensing of state information, and intelligent online processing. A dynamic monitoring and early warning system for rockburst in coal mines was developed and great progress was made in the early warning of ground pressure.
First of all, the Institute of Rock and Soil Mechanics, Chinese Academy of Sciences independently researches and develops a high-precision fiber grating three-dimensional stress sensor. Its corrosion resistance, resistance to groundwater and electromagnetic interference, and long-term stability are greatly improved, and it can simultaneously realize the construction of the rock during the construction period. The physical stress test and long-term real-time follow-up monitoring during the project operation period fill the industry gap.
Next, the Institute of Rock and Soil Mechanics, Chinese Academy of Sciences researched and developed intelligent mining sites by using next-generation information technologies such as the Internet of Things, smart technologies, cloud computing, and big data as a means of comprehensive perception, real-time transmission, and intelligent online processing. The real-time monitoring system of remote rock 3D stress field has the advantages of automatic monitoring, data sharing and remote control.
Finally, through data mining and intelligent learning of the acquired stress state information, the Wuhan Institute of Rock and Soil Mechanics, Chinese Academy of Sciences established an early warning index and model for dynamic stress risk, which is an early warning, informatization construction of impact rock pressure in the complex environment of underground space and Disaster prevention and mitigation measures provide theoretical and technical support conditions.
The dynamic monitoring and early warning system for rockburst has been verified in many underground projects such as the Dongtan Coal Mine and the Jisan Coal Mine of Yankuang Group, and has gained successful experience and won the second prize for national scientific and technological progress.
This achievement achieved a three-dimensional dynamic long-term test of the stress of the surrounding rock of the stope, which further strengthened the intelligent remote real-time monitoring and early warning research, and solved a major problem for the resource exploitation industry.
(Source: China Energy News, Wuhan Institute of Rock and Soil Mechanics, China Network)

Polymer Concrete Cells For ER/EW Processing Of Nonferrous

  1. Vinyl ester resin monolithic casting electrolytic cells
Electrolytic cells are designed, built and installed to satisfy the most stringent requirements requested by tankhouse operators worldwide. In most cases their main request is to guarantee full operating availability throughout the plant's lifespan, maximizing production of high-purity metal (copper, zinc, nickel, cobalt, lead or other nonferrous metals) with absolute safety for people and the environment. Additionally, cells must accommodate changes for continuous improvement of the electrolytic process, integrating efficiently with upgrades of complementary equipment such as anodes, cathodes, cap, boards, overhead crane electrolyte agitation systems, acid mist control devices, thermal insulation among many others.
2. Structure
Electrolytic cells are cast monolithically based on a patented, three-layer composite material system:
The Internal layer is a monolithic tank made with multiple layers of fiber-reinforced vinyl ester resin (FRP) complying with chemical barrier international norms that assure long-term impermeability and corrosion resistance.
The Intermediate layer is the structural core made with polymer Concrete, with a patented formulation to achieve a low coefficient of thermal expansion, providing long-term structural integrity with low thermally-induced stresses
The External layer is a standard seal layer of FRP that further protects the structural core from electrolyte splashes and spills. Optionally,this external seal may be specified with multi-layered oriented fiber reinforcements to guarantee trouble-free operation in unusually extreme operating environments.
Benefits of electrolytic cells

Long-term impermeability, free of corrosion, 20+ years warranty
Our monolithic internal tank manufactured with multiple layers of fiber-reinforced premium vinyl ester resin. It has continuous service without leakage, free of corrosion and structural flaws which operating under normal conditions as specified for each project.
Swift, accurate and less costly installation
Electrolytic cells include features that allow reduction of 25% or more in time needed for cell erection, alignment and leveling compared to time required with conventional polymer concrete cells. Dimension tolerances for electrolytic cells are consistently tight, simplifying installation in the most demanding applications,including plants with automated crane systems.
Minimum cleaning time and water consumption
The rounded internal shape,optional sloped cell floors,and smooth,flat finish of the internal tank,facilitate water sweeping and drainage of heavy sludge,with reduced water usage and accelerating return to service after each cleaning.
Minimum maintenance cost
The robust, virtually impervious internal tank that is chemically bound to the polymer concrete structural core during molding is tolerant to operating abuse its smooth,non-stick surfaces minimize adhesion of contaminants.
Maximum operational safety

The structural core of electrolytic cells is bolstered with sturdy external seismic reinforcement blocks confining its floor supports, and includes a robust, internal bidirectional, pultruded FRP bar mesh reinforcement which positively maintains integrity should the cell fail due to catastrophic events. Electrolytic cell installation protocols call for lateral wall collaboration between cells,thus reducing stress levels of cell around 40% under normal operating conditions.

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Polymer Concrete Electrolytic Cell,Electrolytic Cell Nickle,Electrolytic Cell Nickle Refining Tanks,Electrolytic Cells of Electroplating Equipment

Hebei aoliande Chemical Equipment Co., Ltd , https://www.aoliandechemical.com