A single bracket with constant resistance and large deformation
A technology of constant resistance, large deformation and single support, which is applied in the direction of pillars/supports, mining equipment, mining equipment, etc., and can solve problems such as large deformation of the roadway, roof collapse and failure of the roadway, so as to improve work efficiency and compressive strength Strength, cost-saving effect
Active Publication Date: 2021-06-15
SHAOXING UNIVERSITY
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Problems solved by technology
In recent years, the mining of mine resources in my country has shifted from the shallow to the deep. The deep geological environment of the mine is complex, and the mine pressure is relatively high, resulting in geological disasters such as large deformation of the roadway and collapse of the roof of the roadway. In the case of excessive pressure on the roadway roof, The existing single support will fail due to its small vertical support force
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Embodiment Construction
[0024] Embodiments of the present invention provide a single bracket with constant resistance and large deformation, such as Figure 1-3 As shown, it includes a base 1 in contact with the ground, a top block 4 corresponding to the roof of the roadway, a U-shaped steel 2, a U-shaped steel 2 3, a settlement early warning mechanism 6, a friction mechanism 5, and several clamping cables 7 .
[0025] The base 1 is in contact with the ground to form a bottom support, and the top block 4 is in contact with the roof of the roadway to form a force-bearing surface.
[0026] The U-shaped steel-2 is arranged on the base 1, and the two ends of the U-shaped steel-2 are connected with the base 1.
[0027] The second U-shaped steel 3 is arranged on the bottom of the top block 4, and the two ends of the second U-shaped steel 3 are connected with the top block 4.
[0028] The friction mechanism 5 includes a number of teeth 1 51 and a number of teeth 2 52 meshing with each other. The teeth 1 51...
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Abstract
The invention provides a single support with constant resistance and large deformation, which includes a base in contact with the ground, a top block corresponding to the roof of the roadway, U-shaped steel 1, U-shaped steel 2, a settlement early warning mechanism, a friction mechanism and several clamping cables. The U-shaped steel 1 is set on the base, the U-shaped steel 2 is set on the bottom of the top block, and the friction mechanism includes a plurality of tooth 1 and tooth 2 meshing with each other, and the tooth 1 is set on the U-shaped steel 2 And set along the length direction of the U-shaped steel 2, the teeth 2 are arranged on the U-shaped steel 1 and along the length direction of the U-shaped steel 1, and the U-shaped steel 1 and the U-shaped steel 2 are fixed by a clamping cable. In the secondary support process of the mine roadway, the compressive strength of the single support is improved, and the single support with constant resistance and large deformation can reduce the pressure of the roadway roof on the single support through the mutual friction and sliding between the first tooth and the second tooth. In this way, the single support is relatively stable, thereby maintaining the stability of the roadway.
Description
technical field [0001] The invention relates to the technical field of roadways, in particular to a single support with constant resistance and large deformation. Background technique [0002] The single bracket is composed of U-shaped steel, I-shaped steel or other supporting devices connected to each other through clamping cables. Because of its high tensile strength and compressive strength, it also has good toughness, high supporting force, and high supporting strength. The construction is simple and can be recycled, and it is widely used in the secondary support of mines and roadways, especially in deep complex roadways and soft coal seam roadways. [0003] At present, in the construction of single supports in mines and roadways, two support devices are superimposed and overlapped at the end of each other, and then fixed with clamping cables, which are mainly used for the support of collapsed roadways. In recent years, the mining of mine resources in my country has shi...
Claims
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IPC IPC(8): E21D15/24E21D15/46E21D15/50E21F17/18
CPCE21D15/24E21D15/465E21D15/50E21F17/185
Inventor 郭鹏飞孙鼎杰梁宏达袁亚迪叶铿铿
Owner SHAOXING UNIVERSITY