SU1454974A1 - Walking forms for constructing mine working supports - Google Patents

Abstract

The invention relates to mining. The goal is to improve the quality of the erected lining, as well as an increase in the rate of penetration. Shakaktsa formwork includes interconnected section 1, mechanism 2 for separating sections 1 from concrete, hydraulic jacks (HD) 3 displacements and pallet 4. On the drain pan 4 is fixedly mounted a forming ring 5 pivotally connected by means of brackets 6 to the stems of the HD 3. Working surface ring 5 is made in the form of a truncated cone, facing apex to the bottom. When the concrete reaches the design strength, the rods of the DG 3 push out. c, moving the pallet 4 with the ring 5, which cuts off the left berm 7 and contours the walls of the passable trunk. 1 il. (L

Description

The invention relates to mining and can be used in the construction of lining of mine workings, for example, inclined and vertical. $

The purpose of the invention is improving the quality of the constructed lining, as well as increasing the rate of penetration.

The drawing shows the proposed formwork, a vertical section. ed Walking formwork for erecting supports for mine workings contains sections 1, a mechanism 2 for tearing the sections from concrete, hydraulic rams 3 for moving and a pallet 4 on which the forming ring 5 is rigidly mounted, equipped with brackets 6 pivotally connected to the rods of hydraulic rams 3 for moving, and the working surface the forming ring 5 at - ₂ θ is given the shape of a truncated cone, with its vertex facing the bottom.

Work with formwork as follows.

After the foundation pit is formed with a depth equal to the formwork height, the latter is mounted on the bottom. To do this, collect pallet 4 with brackets

6. Separate sections 1 are installed on the pallet 4 and connect them between jq. Then, hydraulic displacements 3 are mounted on the formwork, the rods of which are pivotally connected to the brackets 6. After that, the barrel collar is concreted. At the end of the concrete laying, 35 rocks are excavated using known tools for full penetration, while a berma 7 of 200,000 mm width is left along the perimeter of the barrel. perceiving through the pallet the weight of the formwork. Upon reaching concrete design strength, oil is supplied under pressure to hydraulic displacement jacks 3 under pressure, their rods are extended, moving the sump 4 with the forming ring 5, which cuts the berm 7 and outlines the walls of the passageway. After moving the pallet 4 to the height of the formwork, the sections 1. are opened from concrete using the mechanism 2, and the formwork hangs on the hydraulic jacks 3 of the movement. When relieving pressure in the latter, the formwork, under the influence of its own weight, is lowered onto the pallet 4 and centered, after which concrete is laid.

Next, the cycle repeats.

The technical and economic advantages of the invention are that, by reducing the manual operations for developing a berm and contouring the barrel walls, the walking formwork allows to increase the rate of penetration up to 1.5 m per shift, instead of 1 m known formwork, i.e. with an average trunk depth of 40 m per year, well-known formwork can cover about 256 m, and a new formwork - 384 m or 148 m more. With the cost of driving 1 m of a trunk with a diameter of 5.5 in the light of 400 rubles, this will be 400 x x 128 = 51200 rubles.

Claims (1)

Claim·: Walking formwork for erecting lining of mine workings, including sections connected to one another, a mechanism for tearing sections from concrete, hydraulic rams and a pallet, characterized in that, in order to improve the quality of the erected lining, as well as to increase the rate of penetration, the pallet is equipped with a rigidly mounted one a forming ring, which is pivotally connected by means of brackets' to the rods of the hydraulic rams, the working surface of the forming ring being made in the form of a truncated cone with its apex facing the bottom.