The experience in using of anchorage load indicators in mine conditions

DOI: 10.37153/2618-9283-2024-4-73-84

Authors:  
Rubric:     Scientific and technical developments   
Key words: anchorage, rocks, roof, load, dynamic effects, bearing capacity, contour array, geomechanical condition, safety
Annotation:

The article reflects the principle of operation of load indicators to monitor the operable and safe condition of the anchorage of mine workings. The experience of using IN(H), IN(C), together with indicators of displacement of roof rocks during the formation of dismantling chambers in the conditions of LLC "Shakhta Uskovskaya" and LLC "Shakhta Yuzhnaya" Branch of JSC "Chernihiv" is considered. The effectiveness of anchor load indicators under dynamic influences depends on several factors, including the type of indicator used, anchor characteristics, and operating conditions. Anchors designed to operate under high dynamic loads must be designed taking into account possible vibrations and impacts. In some cases, it may be advisable to use a combination of load indicators with other monitoring methods, such as vibration analysis or thermography, to get a more complete picture of the condition of anchors under dynamic loads. Anchor supports equipped with indicators can better cope with the dynamic loads that occur during earthquakes. Monitoring systems can help in assessing how effectively the anchorage holds the structure in conditions of seismic activity. Based on the data obtained from the indicators, it is possible to improve the methods of designing and installing anchor supports, which will ultimately increase their efficiency and safety.

Aim of the article is to study the influence of various factors on the strength and stability of anchorage in mine conditions. The proposal of methods and technologies for the use of load indicators that allow timely detection of changes in the state of the support. Formulation of recommendations for improving the safety and efficiency of anchorage operation based on the data obtained.

Materials and methods. Within the framework of this work, standard methods for determining loads during deformation are used. The main material was obtained during the pilot operation of the anchor support in mining conditions.

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