Roadway support structure capable of achieving multi-grade energy consumption collaborative yield and splicing method
A roadway support and frictional energy consumption technology, which is applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve the problems of not being able to give full play to the cooperative yielding effect of supports, affecting the stiffness and stability of supports, and weak force at nodes. , to achieve the effects that are conducive to overall stability, sufficient pressure, and conducive to on-site construction
Active Publication Date: 2017-06-09
JIANGSU VOCATIONAL INST OF ARCHITECTURAL TECH
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Problems solved by technology
These designs have not changed the current situation that the concrete-filled steel tube support has a heavy self-weight during construction, is inconvenient to be moved flexibly, and cannot be recycled. Nodes become the weak link of stress, which affects the overall stiffness and stability of the support; at the same time, simple node yielding cannot fully exert the cooperative yielding effect of the overall support
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[0044] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
[0045] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.
[0046] In the present invention, low yield strength consumption can allow the low yield strength of the pressing...
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The invention relates to a roadway support structure capable of achieving multi-grade energy consumption collaborative yield and a splicing method. The roadway support structure is composed of a D-C shaped support, a D shaped connecting sleeve, a slidable groove-shaped friction energy consumption yield connecting piece and a low yield strength energy consumption yield steel block. In the yield energy consumption process, the defect that a traditional yield position is only limited at a node is overcome, and a stereoscopic and scientific multi-grade collaborative yield system composed of the low yield strength energy consumption yield steel block, an alloy spring inside the low yield strength energy consumption yield steel block and the slidable groove-shaped friction energy consumption yield connecting piece. The slidable groove-shaped friction energy consumption yield connecting piece arranged in the support overcomes the defects that a traditional support node is relatively weak in rigidity and small in yield range, the rigidity at the support node is strengthened, the yield range is wide, the yield amount is more sufficient, and the support structure is stabler. At the same time, the slidable groove-shaped friction energy consumption yield connecting piece can be recycled and reused.
Description
technical field [0001] The invention relates to an underground engineering roadway support structure, in particular to a roadway support structure and a splicing method capable of multi-stage energy consumption and pressure yielding, and belongs to the technical field of roadway support. Background technique [0002] Coal is the main energy source in our country, and its safe mining has always been concerned by people. Among them, the effect of coal mine roadway support is very important to the safe production of coal mines. For a long time, U-shaped steel bracket support technology has been widely used in coal mine roadway support. However, with the depletion of shallow coal resources, coal mining gradually develops to the deep, and the environment of the roadway is becoming more and more complex. The characteristics of high ground pressure, large deformation, dynamic load, and difficult support make the U-shaped steel bracket yield in the roadway support. One of the main ...
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IPC IPC(8): E21D11/18E21D11/22
CPCE21D11/18E21D11/22
Inventor 杨宁赵美霞陈年和孙武曹洪吉杜彬刘家兴肖长伟王玮孙秋荣
Owner JIANGSU VOCATIONAL INST OF ARCHITECTURAL TECH
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