A method of manufacturing blocks of the supports
(57) Abstract:The invention relates to mining and can be used in underground mining for the construction of the supports for the protection of development workings in the seams of up to 1.2 meters It provides increase bearing capacity and reduce costs for the construction of protective structures. A method of manufacturing blocks of the supports includes the execution of the block of wood and tie it with a flexible coupling, and the first material block elements condense and compress, creating in the block design preliminary voltage, then the design of the tie mentioned a strong flexible connection, keeping an internal preliminary gash in the material elements. The invention relates to mining and can be used for the construction of protective structures under the protection of preparatory workings from the influence of the treatment works on the layers up to 1.2 mKnown methods of protection of openings through the coal pillars, rubble strips, tables of units BGBT, wood and rubble fires.The effectiveness of these tools is low for the following reasons:
- coal pillars cause loss prepared by the th density and low bearing capacity;
tables and other artificial security support require significant costs for forming bearings with high load capacity.Known methods of manufacturing units BDB, including wooden embedded elements and durable metal casing (Rutkow K. I. and others, Protection reusable mines the tables of wood, concrete blocks, the magazine "Coal", 8, 1999, S. 15-17). To impart structural integrity and increase the carrying capacity of the space between the packing elements are filled with lean concrete.This method requires factory conditions of manufacture, substantial resources and, therefore, quite expensive. In addition, due to the use of the concrete, the weight of these blocks reaches 50-70 kgThe closest known is a method of manufacturing blocks of the supports, including the execution of the block of wood and tie it with a flexible coupling (ed. mon. The USSR 964168, CL E 21 D 15/48, publ. 07.10.1982). In block two beams are placed on the same level as the long sides close to each other, and the third on top of them and are fastened to each other from moving in the transverse direction of the clamping device consisting of flexible brackets is s operations and passive soft fixation due to the lack vnutrennego thrust structure elements does not provide sufficient bearing capacity.The objective of the invention is to increase the carrying capacity, reducing the cost of fabrication and erection.To solve the problem in the method of manufacturing blocks of the supports, including the execution of the block of wood and tie it with a flexible coupling, a first material block elements condense and compress, creating in the block design preliminary voltage, then the design of the tie mentioned a strong flexible connection, keeping an internal preliminary gash in the material elements.The method of manufacture is as follows. Pre-harvested wood embedded elements of a given length are placed in the aperture of the installation for forming blocks. The movable part installing allocated to the required value depending on the parameters of the embedded elements.The opening is filled completely, and the movable part by means of a power unit combined with a fixed bed, compacts and compresses the material elements, creating the design of the pre-tension. After completion of the process of compaction and compression design and tie in this state commits a strong flexible connection or membrane, p is. The movable part of the installation rises, the finished unit is removed and the process repeats.This method allows the use of different waste wood, allows to increase the carrying capacity by creating a pre-stressed structure, to reduce the cost of fabrication and erection. A method of manufacturing blocks of the supports, including the execution of the block of wood and tie it with a flexible coupling, wherein the first material block elements condense and compress, creating in the block design preliminary voltage, then the design of the tie mentioned a strong flexible connection, keeping an internal preliminary gash in the material elements.
SUBSTANCE: invention is related to mining industry, namely to crib work, and may be used for reinforcement of mines in development of salina mineral deposits. Crib work includes tiers of four-support crib work elements. Additionally it is equipped with one or two tiers of pliant elements in crib work laid onto elements of rigid part in four-support crib work. Besides pliant elements are displaced to the centre of crib work, and dependence between effort of compression from mining pressure applied at one angle of crib work, and its deformation is identified from mathematical expression.
EFFECT: improved pliancy of wooden crib work by creation of beam system with redistribution of mining pressure loads at middle part of crib work elements.
SUBSTANCE: device comprises turn board articulated with advancing hydraulic jacks, thrust hydraulic jacks with supports in contact with lateral walls of working and frame with boards, their height being defined by drift height. Inclined platform mounted at the frame for turn board and filling material to get in contact with as well as frame boards and filling massif. Thrust hydraulic cylinders are articulated with the frame. Inclined platform is articulated with the device frame at extreme edge in filling material travel direction. At other edge, lift hydraulic cylinders are rigidly secured by cylinders at the frame and, by rods, articulated with the frame.
EFFECT: higher efficiency of stowage.
2 cl, 2 dwg