SU1642022A1 - Articulated yielding support arch - Google Patents

Abstract

The invention relates to mining and underground construction and is intended for the fastening of mine workings and underground structures. The goal is to increase the carrying capacity of lining and reduce manufacturing costs. The support consists of half-joints (PA) 1 and 2 connected in the vault by means of a hinge. The support plates (OP) 5 are connected with PA 1 and 2 with stops 6 at the ends, mounted obliquely to PA 1 and 2 The inner end of the OD 5 is located below the outer one. Each PA 1 and 2 is made in the shape of the lateral branch of a square parabola and mounted on the inner end of the OD 5 with the ability to move along it to the outer ends of the OD 5 before contact with the stop 6 and purchasing PA 1 and 2 of the square parabola shape. The angle of inclination of the OD 5 to the horizontal axis of the support is determined by the formula p a arctg (//, - KV :) / (V, + KN.)}, Where H is the horizontal spread of one PA; V - vertical load on one PA; К is the coefficient of friction sliding, 0 is the angle between the vertical axis of the support and the straight line connecting the hinge in the arch with the hinge at OD 5. By varying the angle of the OP 5, the displacement resistance n n 4 PA 1 and 2 can be adjusted. As a result of opposite displacements the rocks and links and their contact includes the resistance of the rock, which has a relieving effect on the lining. 3 il. Ј (L

Description

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Claims (2)

Claim Arched hinged-pliable support, including semi-arches connected in the arch by a hinge and having base plates with stops at the ends, pivotally connected to the semi-arches and mounted obliquely to the semi-arches, while the inner 5 end of the plate is lower than the outer one, characterized in that, for the purpose of to increase the load-bearing capacity of the lining and reduce manufacturing costs, each half mark is made in the form of a lateral branch of a square parabola and is mounted on the inner end of the base plate with the possibility of moving along it to the outer ntsu plate into contact with the stop, and an arch support frame acquiring a quadratic parabola form, the angle of inclination of the supporting plate ¹⁵ to the hori tal axis is defined by a support frame, Hi-KVi P <a <arctan _ν . _{+ Κ}} ^ 2Q where Η is the horizontal spacer of one arch link; V is the vertical load on one link of the arch; K is the coefficient of sliding friction; β is the angle between the vertical axis of the roof and the straight line connecting the hinge in the arch with the hinge on the base plate. Figure 2