What Is The Pulling Force Of Coal Mine Anchor Cables in Megapascals

Coal mine anchor refers to a type of anchor rod support method that is fixed in the surrounding rock behind the underground coal mining face to support the goaf. The anchor rod is connected to the anchor plate, anchor raft, and anchor head through anchors and transmits force, so that the entire fixed system can withstand external forces such as coal mining pressure and water pressure. The pulling force of coal mine anchor cables refers to the pulling force acting on the anchor cables during the underground support process of coal mines. So, what is the general pulling force of coal mine anchor cables in megapascals?
There are many factors that affect the pulling force of coal mine anchor cables, and the common ones are as follows:
Geological conditions: The stability of the strata, the presence or absence of faults, and hydrogeological conditions can all affect the pulling force of coal mine anchor cables.
Coal mining technology: Factors such as mining method, mining thickness, and mining speed directly affect the pulling force of coal mine anchor cables.
The quality of anchor rods: As an important component of coal mine anchor cables, the quality of anchor rods directly affects the pulling force of the anchor cables.
The number and arrangement of anchor rods: Different numbers and arrangements of anchor rods will also result in differences in the pulling force on the anchor cables.
Support materials: Different support materials also have different effects on the pulling force of anchor cables.
The calculation method for the pulling force of coal mine anchor cables is quite complex, and it is necessary to consider the comprehensive influence of multiple factors mentioned above as well as some other factors. The commonly used calculation methods currently include the following:
Engineering estimation method: This method is based on engineering experience and some basic theories for estimation, so it has a lot of subjectivity.
On site detection method: Detection is carried out through on-site tests, geological surveys, and other methods, and then the anchor cable pulling force is calculated based on the detection results.
Numerical simulation method: By establishing a numerical model of anchor cables and using mathematical methods for simulation calculations.
In practical applications, it is necessary to comprehensively consider and choose appropriate calculation methods based on the actual situation. At the same time, in the calculation process of anchor cable pulling force, it is necessary to design and verify according to relevant national standards and specifications to ensure its safety and effectiveness.
The pulling force of coal mine anchor cables is an important parameter in the underground support work of coal mines, which is influenced by various factors. Therefore, its calculation method is relatively complex and requires comprehensive consideration and selection. Only through scientific and reasonable calculations and designs can the safety and effectiveness of underground support work in coal mines be guaranteed.