SU899994A1 - Method of constructing suspended roof support - Google Patents

Description

(54) METHOD FOR CONSTRUCTING SUSPENDED FIXTURE

one

FIELD OF THE INVENTION The invention relates to mining, in particular, to methods for erecting suspended supports in workings.

There is a method of erecting suspended lining, which includes drilling in the roof of wells and introducing into them a folded steel cable with subsequent injection into the wells of cement mortar 1.

The disadvantage of this method is the impossibility of extracting and reusing steel cables. In addition, a cement mortar is required, the preparation of which in the mine conditions is laborious, as well as injection equipment.

Closest to the invention, the technical solution is a method of erecting suspended lining, which includes drilling in the roof of a cross-section inclined shank in one plane, constituting a row for delineating the pillars of a triangular shape, pulling into the cores of cable sections and laying the floor 2.

However, this method does not provide the necessary operational reliability and efficiency of the lining, since the flat roof fastening is not achieved, as a result of which local downfalls of the rock are possible.

The purpose of the invention is to increase the operational reliability and efficiency of lining.

This is achieved by the fact that through all the round pillars they successively pass with the formation of loops the cable, the ends of which are fastened to the loops of the outer columns by means of the jams.

FIG. 1 shows the development with a sub 10 spring lining, erected by the proposed method, a longitudinal section; in fig. 2 is a section BB in FIG. one; in fig. 3 is a view of B in FIG. 2; in fig. 4 is a diagram of the passage of a cable with the formation of loops through all 15 contoured pillars.

For the erection of suspended lining it is necessary to have paired inclined taps 1 and 2, cables 3 with lugs 4, jams 5 and overlap 6. Paired taps 1 and 2 have a diameter of 45-60 mm, drilled

Claims (2)

20 at an angle into the roof to a depth of 0.7-0.8 m to the intersection with each other and contour rock pillars. Cable 3 has a diameter of 12-14 mm. The tips 4 are made compact so that they freely pass through the pair of holes. The clamp 5 is made in the form of threaded brackets with strips and nuts. Overlap 6 consists of cuts, lining or other timber. The support was erected in the following order. At the walls of the excavation in the roof of the drill, inclined holes 1 are drilled. Then, at an angle to them in the same plane, holes 2 are drilled so that the ends of the holes 2 enter holes 1. Drilling is carried out using LK-68 or LK-71 rigs, which provide strict orientation of the hole. The drilled holes 1 and 2 are blown with compressed air to clean the fines. After that, in the borehole 1, plant a cable 3 with a lug before mating with borehole 2. In the borehole 2 a wire with a diameter of 6 mm is inserted with a hook at the end. Highlighting the hole with an accumulator lamp, hook it to the end of the cable 3 and pull it through the hole 2 into the work. Between the first pair of holes 1 and 2 they form a loop 7 and fasten the end of the cable 3 with it by means of the clamp 5. In the same way, the cable 3 is pulled through all subsequent outlined pillars, forming a loop 7 around each of them. On the last pillar fix the second end cable 3. Here, if necessary, secure the end of another section of the cable to be installed at a subsequent section of production. After mounting the cable 3, an overlap 6 is laid on them. At this, the erection operations are completed. If necessary, the support can be dismantled. To do this, it is enough to remove the jacks 5, loosen the cable 3 and gradually remove the knurling 6. Overlap 6. All elements of the lining can then be reused. The invention of the method of erection of suspended lining, including drilling in the roof of the excavation in the same plane of intersecting inclined holes, constituting a series for delineating the rock pillars of a triangular shape, pulling into the holes of cable segments and laying the floor, characterized in and efficiency of support, through all contoured pillars consistently pass with the formation of loops the cable, the ends of which are fastened with hinges with hinges of the outer columns. Sources of information taken into account in the examination 1. Semevsky V. N. and others. Shtangov lining, M., Metallurgizdat, 1956, p. 47-49. 2. USSR author's certificate in application number 2547019, cl. E 21 D 11/14, 1977 (prototype). / l / Fig.