SU929875A1 - Hydro-isolation mine partition - Google Patents

Description

(54) MINE WATERPROOFING LINES

one

The invention relates to underground hydraulic structures and can be used for waterproofing flooded areas and flooded mine workings, for example, in potash and rock-salt mines.

Waterproofing lintels are known, consisting of concrete walls, with valves and hatches for performing work in the flooded zone 1.

However, these designs of waterproofing lintels do not provide reliable insulation of the contacting surfaces (structural elements of the structure), in particular, between the metal tube and the lintel concrete.

Also known is the construction of a waterproofing lintel consisting of concrete walls in contact with enclosing rocks, a metal pipe-hole with a hatch and a chamber made between the walls and the pipe-hole and filled with compressed air 2.

A disadvantage of the known construction is also the impossibility of achieving impermeability to groundwater due to the formation of an annular cavity through the contact of the metal of the pipe-manhole. - concrete lintels resulting from temperature fluctuations and shrinkage of concrete, as well as air leakage from the chamber. In this case, in order to seal the contacts, they are usually carried out by repeated crimping with a grouting material, through numerous connections fitted in a pipe truck.

10 The aim of the invention is to increase the tightness of the metal-pipe-lazabeton contact of the bridge by eliminating the annular cavity along this contact resulting from temperature fluctuations and shrinkage of the concrete.

The goal is achieved by the fact that in a shaft waterproofing bridge, including a concrete wall and a metal manhole with a hatch, the manhole with 2 ° of the gun side is provided with an o-ring seal made of heat-insulating elastic-elastic material in the form of sections with a U-shaped profile shape and transverse stiffeners, while

the inner diameter of the seal is equal to the outer diameter of the pipe-hole.

FIG. Figure 1 shows a waterproofed jumper / general view; in fig. 2 - section A - A in FIG. one; in fig. 3 - manhole with ring seal; in fig. 4 compaction section, -axonometrics; in fig. 5 - section B - B in FIG. four.

The shaft waterproof barrier includes a concrete wall 1 in contact with enclosing rocks, a metal tube 2 and steel spatial reinforcement 3. On the outer surface of the tube-2, restrictive ribs 4 are reinforced, which serve as reinforcement, making it impossible for the tube-shifts to shift. 2 relative to the concrete wall 1. Between the ribs 4 on the outer surface of the pipe-hole 2 there is an annular seal 5 made of a heat-insulating elastic material, for example, a SKU-P urethane solastolor DCCH or R-7, in the form of sections with U-shaped profile of the transverse ribs 6 and stiffness.

The number of ribs 6 stiffness is chosen, based on design considerations, taking into account the length of the sections of the ring seal 5. Thus, when sealing the pipe-manhole with an outer diameter of 1020 mm, each of the Eight sealing rings consists of Three sections with a width of 300 mm, thickness I, 100 mm, with transverse ribs 6 gesture .iOCTH width 50 mm. Such a cross-section of an annular seal 5, as compared with a sheet covering, allows it to be fitted snugly to the pipe. due to the effect of vertical 6 and tangential t stresses. In the absence of stiffeners, the ring seal sections cannot be sufficiently accurately and reliably fixed to the surface of the pipe-hole. In addition, in this case, it is necessary to achieve the difficulty (on adhesion of concrete, lintels with compaction.

In the body of the concrete wall 1 mounted olarsing nozzles 7. To control the characteristics of the erected lintel pos | .dn supplied with a pipe 8 with a pressure gauge 9.

The lase pipe 2 is provided on both sides with metal lids 10, secured with bolt joints 11. The sealing gaskets 12 are installed between the flanges of the pipe-hole 2 and the lids 10.

The waterproofing jumper is built as follows.

In order to isolate watered, for example | 1111, openings at the installation site, pergapes are trimmed with an annular wedge -jiy6 13. The surface of the hemlock is cleaned and covered with sprayed concrete. In the frame, steel spatial reinforcement 3 is installed, providing rigidity and

strength of the concrete wall 1, the ends of the reinforcement elements are embedded in the host rocks. Inside the space intended for the construction of the concrete wall

mount pipe Laz 2.

On the outer surface of the pipe-hole 2, metal limiting ribs 4 are fastened, between which an annular seal 5 is mounted by means of an end connection. For these purposes in the end

parts of the sealing sections provide holes 14.

After the installation of the pipe-hole 2, the formwork is erected and the concrete wall 1 is erected. Then, by specially drilled through

nozzles 7 shpuram 15 perform pressure testing of the contacts of the concrete wall with enclosing rocks fastening solutions, for example, based on epoxy resins of the brand ЭПС-1. At the end of the crimping of the contacts, the tightness of the main jumper assemblies is checked. To do this, compressed air is supplied to the sealed pipe 8 with a pressure gauge 9 installed in the concrete wall 1 and fed through the body of the lintel into a dead-end production. The tests are carried out under pressure m equal to the possible hydrostatic pressure. In case of air leakage fixed by the indication of the pressure gauge 9, drill the drill bits 15 and re-crimp the contacts of the concrete wall 1 with the host rocks until they are completely sealed.

An annular seal made of urethane compounds with a double chemical bond, thermal insulation properties resistant to aggressive media, is characterized by high elasticity and elasticity with virtually no irreversible deformation and allows

prevent heating of the pipe-hole when laying and curing of concrete. Sealing sections with a U-shaped profile and transverse stiffening ribs have high physicomechanical properties, good adhesion with metal and concrete and reliably isolate the contact between the manhole tube and the concrete wall.

The proposed construction of a shaft waterproofing bridge allows to improve the tightness and reliability of isolation of flooded areas and flooded mine workings.

Claims (2)

1. Buhman Ya. 3., Molotkov P. G. Mine lintels. M., Gosgortehizdat, 1962, p. 34-81. 2. USSR author's certificate No. 317809, cl. E 21 F 17/14, 1968 (prototype). . ti. ± ji ji ± ± zn. t; AND  //////////// 7. $ to / d-JLtTl u ///////// Fig.Z