The method of stabilization of landslides threads

 

The invention relates to the construction, in particular, to the creation of barriers to movement of landslides streams. The method of stabilization of landslides streams includes the creation before creeps the ground contract. What's new is that contrivance perform the ignited metal grid, which is set on the path of movement of the landslide on the pads and stands with a gradual increase over the earth's surface and connected to a source of energy to create electricity thermal field, drying and sintering of the clay soil of the body of the landslide. Technical result provided by the invention is to improve the efficiency of the method by reducing labor costs and time stabilization of landslides. 2 Il.

The invention relates to the construction, in particular, can be used to stop a relatively fast moving plastic landslides, landslides (landslides streams).

Know the use of firing clay soil to stabilize the slopes of a deep excavation in clay soils. The firing was performed by filling the coal series of tunnels. Coal was set on fire and burned for a long time. In the tunnels formed a stable area (the AI railway transport. Vol. 89. The stability of the subgrade. - M.: Transgenderist, 1954).

The disadvantage of this method of firing is the length of the process and the impossibility of using the method for the stabilization of fast-moving landslides streams.

A known method of construction of the retaining wall (SU 1649043 A1, E 02 D 29/02, 15.05.1991), including backfill soil layer-by-layer seal and packing between layers of reinforcing elements of the geotextile with the conductive layer. Electrically conductive elements are alternately connected to different poles of a DC source, creating a thermal field, providing drainage and sintering of the clay in the landslide, which increases the strength of the retaining wall by increasing the adhesion of the soil reinforcing elements.

The disadvantage of this method is the need for the constant current source, layer-by-layer stacking with soil compaction interspersed with electrically conductive layers of geotextile. The method cannot be used to stop the motion of landslides flows for the duration of construction of retaining structures.

There is a method of stabilization of landslides, which is the closest analogue in which case, the stabilization of landslides before creeps the ground to create roads. - M.: Transport, 1985, S. 215-220).

The disadvantage of this method of stabilization of landslides is the inability of the drainage moving landslide flow, causing them to shift and erosion.

The objective of the invention is to increase the efficiency of the method of stabilization of landslides streams by reducing labor costs and timing of stabilization.

The problem is solved due to the fact that in the method of stabilization of landslides streams, including the creation before creeps the ground contract, according to the invention contrivance perform the ignited metal grid, which is set on the path of movement of the landslide on the pads and stands with a gradual increase over the earth's surface and connected to a source of energy to create electricity thermal field, drying and sintering of the clay soil of the body of the landslide.

Technical result provided by the invention is to improve the efficiency of the method by reducing labor costs and time stabilization of landslides, mobility, due to the quick installation of a metal grid, creating a network connection or a mobile source of electricity thermal field, and ease due to the special form of the placement grid, moznosti of the invention is illustrated by drawings, where in Fig.1 shows moving on an inclined surface flow of water-saturated clay soil; Fig.2 - landslide after interaction with the grid heater.

The method of stabilization of landslides streams includes the creation on the inclined surface of the earth 1 before creeps clay soil 2 soil contract performed by ignited installed in the path of movement of the landslide on the pads 3 and 4 metal racks grid-heater 5, which is held by struts 6 and is connected to the power source 7 to generate electricity thermal field, drying and sintering of the clay soil of the body of the landslide. Metal grid-heater 5 sets with a gradual increase above the surface of the earth.

The invention is intended for use in emergency situations, when the anomalous precipitation occur fast moving landslides that threaten buildings and structures.

Claims

The method of stabilization of landslides streams, including the creation before creeps the ground contracta, characterized in that contract perform the ignited metal grid, which is set on the path of movement of the landslide boost electricity thermal field, drying and sintering clay soil body of the landslide.

 

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SUBSTANCE: method is performed in two-stages. The first stage involves forming vertical elongated flat ground massifs secured by hardening material. Massifs are created in crest embankment area and in upper area of embankment slope so that massifs are spaced minimal available distance from crest and pass through embankment body, including land-sliding upper embankment slope area. Massifs are anchored in mineral bottom by lower edges thereof and are arranged at least in three rows and there are at least three massifs in each row. Method for massifs forming involves driving double-slotted injectors directly in embankment ground or in wells formed in embankment and having plugged wellhead; orienting injector slots perpendicular to hydraulic pressure head vector direction in embankment area to be reinforced; injecting hardening material under increased pressure across horizons from top to bottom or in reverse direction, wherein injection is initially performed under 5-15 atm pressure and at minimal rate in each second injector of one outermost row beginning from extreme ones; feeding hardening material in previously missed injectors in this row; supplying injectors of another extreme row with hardening material in the same way; feeding hardening material to ejectors of medium rows under 10-20 atm pressure; performing the second reinforcement stage as material hardens to obtain 70% strength. The second reinforcement stage involves forming vertical elongated flat massifs of secured ground anchored in mineral bottom by lower edges thereof and arranged at least in three rows, wherein each one includes at least three massifs. Massifs extend at the angle exceeding embankment slope angle to horizontal line. Massifs are formed with the use of double-slotted injectors in remainder embankment area. Injector slots are directed perpendicular to hydraulic pressure head vector direction in embankment area to be reinforced. Hardening material is ejected in above succession, wherein hardening material pressure is equal to design process pressure enough for direction of feeding hardening material through injector slots and lesser than hardening material injection pressure of the first reinforcement stage.

EFFECT: increased reliability of structure reinforcement; prevention of land-slide on structure slopes.

3 cl, 3 dwg

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