Well and roadway project ladder beam
A ladder beam and engineering technology, which is applied in the direction of shaft lining, shaft equipment, tunnel lining, etc., can solve the problems of narrowing the section specification of shaft engineering, poor adaptability to deformation, and scrapping of shaft engineering, so as to reduce labor intensity and load bearing capacity. Power up, light effect
Active Publication Date: 2018-02-16
安徽马钢矿业资源集团姑山矿业有限公司 +1
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Problems solved by technology
The disadvantages are low strength and poor adaptability to deformation. After the surrounding rock is severely deformed, the section specification of the tunnel project is reduced, which is difficult to handle. Improper handling will cause more serious slabs, roof caving, or even collapse, resulting in the scrapping of the tunnel project
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[0023] Depend on figure 1 , figure 2 , image 3 , Figure 4 It can be seen that the ladder slab beam of the shaft engineering is composed of the main reinforcement 1 and the connecting reinforcement 3; the main reinforcement is a steel bar, which is continuously reversed and bent 150-120° to form an isosceles trapezoid 2 with a bottom angle of 30-60°, and the trapezoid and trapezoid are continuous Parallel connection; the connecting ribs are straight strips; the set number of main ribs are arranged in parallel, the trapezoidal peak section 2-1, the trapezoidal section valley 2-2 correspond, the center of the upper bottom of the trapezoid is on the same straight line, and the center of the lower bottom of the trapezoid is on the same line On a straight line, the connecting ribs are vertically connected to the trapezoidal four corners of the main ribs, and the upper and lower bases are in the same plane, forming a plate-shaped member whose upper and lower bases are parallel t...
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The invention relates to sinking and driving engineering supporting structural members, in particular to a ladder plate girder for sinking and driving engineering. The ladder plate girder is characterized in that the ladder plate girder is mainly composed of main ribs and connecting ribs; the main ribs are continuously and reversely bent by 120 degrees to 150 degrees into isosceles trapezoids, and the trapezoids are continuously connected in parallel. The connecting ribs are in a straight strip shape. The main ribs with the set number are arranged in parallel, peaks and valleys of the trapezoids correspond, and the centers of the upper bottoms and lower bottoms of the trapezoids are located on the same straight line. The connecting ribs are perpendicularly connected to the four corners of the trapezoids of the main ribs and a plate-shaped component with an upper bottom face and a lower bottom face parallel to the upper bottom face is formed. In the use process, the ladder plate girder matched with surrounding rock in shape and size is manufactured according to the shape and size of the surrounding rock and is fixed to the surface of the surrounding rock to support the surrounding rock through anchor rods. The ladder plate girder has the advantages that that the conception is novel, and the structure is simple and reasonable; the main ribs continuously and reversely folded into the trapezoids are adopted, the bearing capacity is remarkably improved, strength is high, weight is low, materials are saved, and the ladder plate girder can be used for temporary supporting and permanent supporting; the component can adapt to deformation of the surrounding rock well, and flexible supporting is achieved; machining is easy, mounting is fast, convenient and safe, and the labor intensity of workers is lowered.
Description
technical field [0001] The invention belongs to supporting structural parts, in particular to supporting structural parts for tunnel engineering. Background technique [0002] With the development of the mining industry, the depth of underground mining is getting deeper, the conditions are becoming more and more complex, the ground stress is increasing, and the requirements for support technology are getting higher and higher. After the excavation of the tunnel project, due to factors such as fissure water and weathering, it is very easy to cause rock blocks to fall, flakes, and roof fall, causing safety accidents and endangering the safety of the tunnel project. It is necessary to support the roof and sides of the tunnel in time. Although the traditional anchor net support method has the characteristics of flexible support. The disadvantages are low strength and poor adaptability to deformation. After the surrounding rock is severely deformed, the section specification of ...
Claims
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IPC IPC(8): E21D11/15
CPCE21D11/155
Inventor 董亚宁
Owner 安徽马钢矿业资源集团姑山矿业有限公司