Method of waterproofing lining tunnels

 

(57) Abstract:

The invention relates to the field of construction and is designed to prevent the ingress of groundwater into the transport tunnels. Technical result provided by the invention is to improve the quality of waterproofing. Method of waterproofing lining of tunnels includes sealing the end portion of the gap between the lining and production, injection waterproofing solution in the space between the production casing through the holes in the lining. What's new is that the end part of the gap between the lining and the elaboration of a seal thrust ring with the sealing pneumosinus, and through the holes in the lining of the pump by the hydraulic pressure of 2.0-2.5 MPa waterproofing solution. 2 Il.

The invention relates to the field of construction and is designed to prevent the ingress of groundwater into the transport tunnels.

There is a method of covering and waterproofing elements of precast concrete lining waterproofing-bitumen, asfaltobetonnyj mastics, epoxy resin and other waterproofing materials that are applied by the method of spraying.

The disadvantage of this method is vozmozhnostuvelichivat sealing joints and waterproofing (Velichkin E. A., Lenets P. T. Construction of tunnels and subways. - M.: Transport, 1971, S. 57).

There is also known a method membrane waterproofing surfaces of the lining of several layers of rolled material, glued mastic (Velichkin E. A., lenets P. T. Construction of tunnels and subways. - M.: Transport, 1971, S. 57).

The drawback of this method is a small mechanical strength and complexity of operations.

There is a method of injection mortar for the lining with the aim of filling the gap between the outer surface of the lining and output generated during passage in communication breeds ( Velichkin E. A., lenets P. T. Construction of tunnels and subways. - M.: Transport, 1971, S. 60).

The disadvantage of this method is the need for additional waterproofing of the outer surface of the lining.

The prototype of the invention is a method of compacting an annular part of the gap between the lining and the production and injection waterproofing solution in the space between the production casing through the openings in the lining (see SU 194135, 29.05.67).

The disadvantage of the prototype is the lack of resistant waterproofing solution for injection solution without special is ptx2">

The invention is aimed at improving the quality waterproofing.

The problem is solved due to the fact that in the method of waterproofing lining comprising sealing the end portion of the gap between the lining and production, injection waterproofing solution in the space between the production casing through the openings in the lining, the end part of the gap between the lining and the elaboration of a seal thrust ring with the sealing pneumosinus, and through the holes in the lining of the pump by the hydraulic pressure of 2.0-2.5 MPa waterproofing solution.

In Fig. 1 shows a lining, the cross section of Fig. 2 is a longitudinal section.

The method is as follows.

In formulation 1 install reinforced concrete lining 2 of the segments or rings, interconnected during Assembly on a cement-sandy solution. Through the 90ostarting from the bottom of the lining, and drilled the screw holes, which have built-in nozzles 3. The ring part of the gap between the lining and the output choke support ring 5 with the sealing rubber tire 6.

Injection waterproofing mortar for the lining is as follows.

Into the internal cavity of the rubber is RA between the lining 2 and output 1.

The lower pipe 3, the lining 2 is connected with a hydraulic booster (not shown) and in the space behind the lining upload waterproofing mortar for patent N 1671637 containing wt.%: portlandcement 20,0 - 26,0; water - the rest. Injection waterproofing solution continues until the last in the lateral pipe lining 2.

Then the power switch to the side nozzles and injection solution is performed until the solution in the upper pipe lining.

Thus, the gap between the lining 2 and output 1 is filled from the bottom to the top of a waterproofing solution that allows after hardening to receive waterproofing layer with high resistance.

Method of waterproofing lining of tunnels, including the seal end part of the gap between the lining and production, injection waterproofing solution in the space between the production casing through the openings in the lining, characterized in that the end part of the gap between the lining and the elaboration of a seal thrust ring with the sealing pneumosinus, and through the holes in the lining of the pump by the hydraulic pressure of 2.0 - 2.5 MPa waterproofing solution.

 

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