SU953227A1 - Method of erecting explosion-proof partitions - Google Patents

Description

(54;) METHOD FOR CONSTRUCTION OF EXPLOSION-RESISTANT LINES

The invention relates to a mine-rescue business and can be used to erect blast-resistant and insulating bridges when isolating mining workings, as well as mine fires.

The known method, according to which, in the formwork, made in the form of elastic bags, placed between the lining of the tunnel and the rock wall, is pumped a solid solution 13.

However, this method has: insufficient airtightness of the erected lintel, due to the fact that the formwork does not fill all the perimeter of lateral rocks of the excavation, the explosive method of wiring the solution lines and switching the supply of the solution to each elastic bag, and the difficulty of fixing the position of the bags during the filling period; impossibility., use of formwork when injecting quick-hardening solutions (hardening in the process of pouring), which are necessary for emergency isolation of the workings with blast-resistant bridges, because the solution hardening in the process of casting prevents the folding of the folds of the formwork and its adhesion to the lateral formations; need to install additional formwork for filling-. nor the space between the formwork and the side rocks in the zone of dumps and depressions.

The closest in technical essence to the proposed is

10 is a method for clamping drifts, which includes supplying air to an elastic sheath and filling it and the fender space with a quick-hardening solution 2.

15

The disadvantage of this method is that the pillow can only be used in conjunction with an arch support and can not directly seal the output section. And,

20 the distance between adjacent arches should be somewhat less than the thickness of the erected jumper.

In addition, the airbag compacts gaps only in the contact zone of its

25 with an arched support (its inner surface) and does not compact the arrays, through which all the solution pumped into the annular space enters. D.p elimination

Claims (2)

30 of this disadvantage, it is necessary to seal the annular opening between the arch and the mine workings by installing additional formwork or other methods, which significantly increases labor costs and the time required to erect the lintel. In case of accidental damage to the cushion shell, it will not be able to spread and fill the space to be isolated. This goal is achieved in that according to the method, before supplying air to the elastic shell, along the contour of development at the ends of the shell, tubular elastic closed elements are installed and air is fed into them, then after filling the elastic shell with 60% -95% fast-hardening solution — air from tubular elastic elements are removed, and after completion, filling the elastic shell with a quick-hardening solution and setting it in it, air is again supplied to the tubular elastic elements. Figure 1 shows the installation of an elastic Blocks during the injection of air in its cavity; Fig. 2 shows an elastic shell in the process of filling it with a fast-hardening mortar; Fig. 3 shows the elastic shell during the completion of filling the post-filling space with a quick-hardening solution. The method is carried out as follows. Before supplying air to the elastic sheath 1 with a bore pipe 2, nozzles for the discharge valve 3, and excess valve 4, as well as drain 5 and control b pipes, tubular elastic closed elements 7 and 8 are installed along the contour of the end face of the sheath 1 and served there is air in them. At the same time, the internal cavity of the shell 1 is connected to the outside air for faster straightening of the shell, and after the elastic elements 7 and 8 are straightened, air from the pressure source is fed into the internal cavity of the shell 1. Then, after the shell 1 is straightened, it is filled with a quick-hardening solution . In this case, the closed tubular elastic elements 8 that are under air pressure play the role of struts and perceive the lateral pressure of the solution. After the elastic sheath 1 is filled with a quick hardening solution, 60-95% of the air from the tubular elastic members 7 is removed. After the filling of the elastic shell 1 with the fast-hardening solution and its seizure in it / the air is again fed into the tubular elastic elements 7, which are stretched between the hardened surface of the bridge 9 and the surface of the excavation 10 and cover all the gaps, creating a closed space 11 bounded by the outer side surface 1, surface 10 and surfaces of closed elastic tubular elements 7, the Formed space 11 through the tube 12 is filled; with a fast-hardening solution that penetrates t in the voids and cracks of mine workings and reliably connects the bridge with them. The proposed method will significantly increase the reliability of sealing zapalubochnogo space around the perimeter of production. The invention of the method of erecting explosion-proof bridges, including the supply of air into the elastic shell and filling it and the storing space with a hardening solution, characterized in that, in order to increase the reliability of the sealing of the storing space around the perimeter of the working, before supplying air to the elastic sheath along the working contour at the ends install tubular elastic closed elements and supply air to them, then after filling the elastic shell with a quick-hardening solution rum .vozduh at 60-95%, of the elastic tubular elements 1 / returned dissolved, and after filling zaverieni elastic shell rapidly hardening solution and the setting of the air therein again supplied to the elastic tubular elements. Sources of information taken into account in the examination 1.Patent of Switzerland, 462871, cl. 19 N 3/00, published 1968. 2. Forward Germany No. 2428290, cl. B 21 E 11/00, -public, 1975 (prototype), . FIG. 2