Structural Diagram of Coal Mine Prefabricated Panel Houses
Currently, there is no publicly available complete structural diagram specifically for coal mine prefabricated panel houses, but structural analysis can be conducted by referring to relevant engineering drawings and the characteristics of prefabricated panels. The following provides an explanation from three aspects: the structure of coal mine buildings, resources for prefabricated panel drawings, and the structural characteristics of prefabricated panels.
The structure of coal mine buildings is mainly based on reinforced concrete frames, with functional requirements influencing design details
Take a three-story main coal mine building as an example. It adopts a reinforced concrete frame structure with a total height of 19 meters. It requires the installation of a 5-ton crane, and the foundation is made of cast-in-place piles to adapt to complex geological conditions. The design of the floor live load is 400 kilograms per square meter, which is much higher than the standard for ordinary residential buildings to meet the needs of equipment operation and material storage. The drawings include foundation layout plans (clearly indicating pile positions), frame column reinforcement plans (marking the specifications and spacing of steel bars), and beam-slab reinforcement plans (detailing the arrangement of load-bearing steel bars). Although these drawings do not directly label 'prefabricated panels', they provide a framework design model for coal mine building structures. If prefabricated panels are used, it is necessary to supplement the connection node design between the prefabricated panels and the cast-in-place beams in the beam-slab reinforcement plans, for example, achieving overall load-bearing through reserved steel bar anchoring or welding.
Resources for prefabricated panel drawings are mainly focused on general designs and need to be adjusted according to coal mine scenarios
Existing resources for prefabricated panel drawings include reinforcement design and construction drawings (for the renovation of old buildings), eave detail drawings (to solve roof drainage problems), and floor joint drawings (to clarify panel joint treatment methods). Although these drawings do not explicitly indicate coal mine applications, their structural plans can show the arrangement of prefabricated panels, internal plans can display the positions of pipeline embedments, and external plans can explain waterproofing structures. For example, when using prefabricated panels in coal mine locker rooms or office areas, reference can be made to the panel joint treatment methods in general drawings (such as V-shaped joints or tongue-and-groove joints), but additional waterproofing membrane layers need to be added according to the moisture-proof requirements of coal mines. In heavy-load areas such as equipment rooms, the bearing capacity needs to be enhanced through additional steel bar solutions in the reinforcement design and construction drawings.
The structural characteristics of prefabricated panels determine their applicable scope and renovation directions
Prefabricated panels are divided into hollow and solid types, with solid panels being more preferred in coal mine scenarios to enhance impact resistance. Their standard span is 4.2 meters, with widths mainly of 500mm and 600mm, and common thicknesses of 120mm (for light loads) and 150mm (for medium loads). Live load grade I panels (1kN/m²) are suitable for office areas, and grade II panels (2kN/m²) can be used for equipment storage areas. If prefabricated panels are to be applied in coal mines, two key issues need to be addressed: first, connection strength, which requires fixing the prefabricated panels to the frame beams through cast-in-place concrete post-pouring strips or welded steel plates; second, durability, which requires applying anti-corrosion coatings on the panel surfaces and filling elastic sealants at the panel joints to adapt to the vibration environment of coal mines.
