CS205282B1 - Manufacturing process of underground packing wall - Google Patents

Description

It is an object of the present invention to provide a method of producing sealed underground walls in a permeable rock, particularly in an aggressive environment, made by filling a fish lined with a clay or bentonite suspension with lump sealing soil by homogenizing it to the required thickness. underwater j.

Sealing wall walls in permeable rocks have hitherto been formed predominantly by filling the fish lined with a clay slurry with sealants such as cement and clay-cement concrete, poor backfill of the trench excavation and plastic foil. Cement and lime-cement concrete is not resistant to the aggressive effects of groundwater, while the addition of ilu to cement not only increases resistance, but on the contrary decreases. The backfill in the slurry forms an uncontrollable and to varying extent uneven filler, which is generally poorly resistant to the hydrodynamic effects of the groundwater, and the walls must therefore have a considerable width downstream. Pouring the ile into the paraffin suspension without further treatment causes the suspension to be separated by suctioning fine particles and, as a result, cracks in the filling filled with pure water. Sealing with plastic foils is labor intensive and easily damaged.

These drawbacks of seals resistant to aggressive effects are solved by the invention, which consists in filling the groove with a clay suspension, sealing soil, with clay. Leaving the lining suspension in the groove creates a protective filter layer on the walls of the groove. Then, a layer of the lumpy lime incorporated into the slurry in the groove is leveled, homogenizing with the slurry by kneading with a blower, the effects of which extend down to the lower deposited homogenized layer, thereby achieving a relative watertight bonding of the lining overlay layers.

Subsequent compression of the homogenized layer by pressure action prevents formation

203282 Communication! as a result of the formation of primers with a low grip strength as in the case of the clay being poured into the suspension without processing.

The slurry clay suspension is prepared from a clay having a liquidity limit W. of 60 to 200 µm and a bulk density within the range of 1.05 to 1.2 µm. The residence time of the suspension in the groove should be from 2 hours to 10 days, while prolonged action has a more favorable effect on the formation of a protective layer of sufficient thickness and tightness on the walls of the fish. A sufficiently moist clay of suitable plasticity and mineralogical composition, especially in pieces, shall be incorporated into the fish filled with a lining suspension with a protective layer on the walls. The surface of the lump clay is leveled. The leveled layer of lump clay is homogenized with the slurry by kneading with a soothing agent of such gravity and size that the specific pressure applied at the lower end allows it to penetrate into the already deposited already compacted layer, leaching and kneading the lump clay system. or with a downforce. The slurry clay with the suspension is compacted by static pressure exerted either on thatch or by the dredges of the closed dredging machine grab. A lump clay is placed on the compacted layer again and the cycle is repeated until the groove is completely filled with the sealing clay.

The underground wall constructed by the above process is horogenic, sufficiently waterproof and disproportionately resistant to hydrostatic pressure as compared to a wall constructed of clay but by a process other than that of the invention. The advantage of the hay built according to the invention is indifiability in an aggressive environment, which has a positive effect on its long-term durability compared to the cement-containing binder.

Claims (1)

A method for producing an undermined sealing wall, in particular in an aggressive environment, characterized in that in the excavated trench lined with a clay or bentonite slurry, a layer of sealing soil is deposited in the trench, which is homogenized in the trench. the cycle is repeated until the groove is completely filled with sealing clay.