Method for protection against landslide

FIELD: hydraulic structures, particularly to consolidate slopes or inclinations to be eroded by ground waters.

SUBSTANCE: method for slope protection against landslide by diverting ground water with the use of drainage mine tunnel, through filters and upward dewatering wells involves excavating mine tunnel beginning from lower point of original ground under water-bearing horizons with tunnel elevation for water gravity flow, wherein mine tunnel extends parallel to direction of water flow from water-bearing horizons; excavating mine tunnel in different directions perpendicular to above flow direction; performing drilling vertical venting wells at tunnel ends beginning from original ground; drilling upward dewatering wells in water-bearing horizons; drilling vertical wells from original ground used as through filters crossing all water-bearing horizons; connecting thereof with cross-headings excavated from mine tunnel; installing valves at through filter ends; providing filtering members at place of intersection between upward dewatering wells and vertical wells with water-bearing horizons; forming water removal channel in mine tunnel and connecting thereof with original ground; drilling hydraulic observing wells beginning from original ground along line of through filters to control water level in water-bearing horizons.

EFFECT: increased reliability; possibility of diverting 85-90% of water contained in water-bearing horizons.

3 dwg

 

The present invention relates to the field of hydraulic engineering construction and can be used in the construction of fixtures slopes or slopes exposed to groundwater. This method can be applied in cities such as Kiselevsk, aspen, Prokopyevsk, Novokuznetsk, Kemerovo region, with the closing of the mines located higher elevation than the housing sector, where do landslides due to the outflow of ground water from flooded mines. Aquifers, saturating the soil with moisture, form a common system of landslides, and the shores of ponds, breaking down, carry the day surface structures, as it happened, Tomsk (Camp grounds, Kashtak and others).

Known way to prevent landslides, consisting in the interception of groundwater by means of drainage excavation connected with drilled from the excavation itself dewatering wells (Bogatyrev CENTURY Engineering protection in areas of large reservoirs of hydroelectric power plants. Moscow - Leningrad, Gosenergoizdat, 1958, S. 142 - 143).

The disadvantage of this method is the low efficiency of the landslide protection of the coastal slope from the degradation of ground water by the drainage excavation, connected only with drilled from the excavation itself dewatering what Chinami.

The closest analogue of the present invention is a method of preventing the formation of landslides, consisting in the interception of groundwater by means of drainage excavation perpendicular to the direction of flow flowing from aquifers water and connected with drilled from the surface vertical wells, which is the end-to-end filters, crossing all aquifers, and drilled from the excavation itself dewatering wells (Abramov S. Kaliev Underground drains in industrial and urban construction. Moscow, Stroyizdat, 1973, S. 128 - 130, Fig. 95 b).

The disadvantage is the closest analogue is that this method does not provide high reliability landslide coastal protection array in areas with steplewski mines.

The task of the invention is the provision of high reliability to prevent the formation of landslides due to the combined interaction mining, end-to-end filters and rising dewatering wells, providing interception of their 85 - 90% water aquifers.

The problem is solved in that way prevent landslides, consisting in the interception of groundwater by means of drainage excavation perpendicular to the direction the stream flowing from aquifers water and connected with drilled from the surface vertical wells, which is the end-to-end filters, crossing all aquifers, and drilled from the excavation itself dewatering wells, according to the invention, beginning with the lowest point of the surface under the aquifers with the rise for gravity flow of water are sinking excavation parallel to or at an angle to the direction of flow flowing from aquifers water, then mining and production are in different directions perpendicular to the direction of flow flowing from aquifers water, on the stubs of excavation carried out drilling from the surface vertical vent wells and excavation of the Buryat rising, vodopadnyaya wells in aquifers, and surface are drilling vertical wells, which is the end-to-end filters, crossing all aquifers, connect them with Bonami that pass from the mine working, and at the ends of the end-to-end filters set the valves, thus rising vodopadnyaya wells and vertical wells at the intersection with aquifers equip filter elements, and in the mine workings perform pumping groove with its conclusion on the surface, additionally, with the surface along a line through filters Buryats who adrenalline wells to monitor water levels in aquifers.

The invention is illustrated in the drawing, in which figure 1 shows a vertical section of the strata components of rocks and aquifers with drainage mountain development, end-to-end filters, Bonami, ventilation and gidroobladnannya wells; figure 2 - plan of drainage excavation, sboc, end-to-end filters, ventilation and hydroalcoholic wells; figure 3 is a vertical section of the strata summands rock aquifers, through filters, Bonami and rising dewatering wells drilled from the mine workings.

The way to prevent the formation of landslides is the interception of groundwater by means of drainage excavation 1, perpendicular to the direction of flow flowing from aquifers 2 water and connected with drilled from the surface vertical wells, which is the end-to-end filters 3, crossing all aquifers 2 and drilled from the excavation itself dewatering wells 4.

Beginning with the lowest point of the surface under aquifers 2 lifting for gravity flow of water are sinking excavation 1 parallel or at an angle to the direction of flow flowing from aquifers 2 water. Then mountain formulation 1 are in different directions perpendicular the direction of the stream flowing from aquifers 2 water length, necessary to prevent the formation of the landslide. On the stubs of excavation 1 carry out drilling from the surface vertical vent wells 5 and excavation 1 Buryats rising, vodopadnyaya wells 4 in aquifers 2, and with the surface at a distance of 5-7 m from the axis of excavation 1 on the side of the latter are drilling vertical wells, which is the end-to-end filters 3, crossing all aquifers 2, connect them with Bonami 6, which pass from excavation 1. At the ends of the cross-cutting filter 3 set the valves 7. Rising of vodopadnyaya well 4 and a vertical borehole at the intersection with aquifers 2 arranged in the filter elements 8, and in mines 1 perform dewatering the groove 9 with its conclusion on the day surface. Additionally, with the surface along a line through filters 3 Buryats gidroobladnannya wells 10 to control the level of water in aquifers 2.

Mining production 1 pass with the rise 0,004-0,006 for gravity flow of water through the drain groove 9 with its conclusion on the surface, the rising vodopadnyaya wells 4 Buryats from mining 1 in aquifers 2 increments, depending on the permeability of each aquifer 2, for removing residual levels in the groundwater of the relevant aquifer 2. The frequency of drilling vertical wells for cross-cutting filter 3 is determined by the residual piezometric level 11 aquifer 2 and coefficient filtering water, providing drainage pattern, and prevent the formation of the landslide.

As a result of implementation of the method described above will be formed by the device to prevent landslides.

Device to prevent landslides includes a vertical wells, which are made in the form of a pass-through filter 3 and is connected by Bonami 6 mountain development 1. At the ends of the cross-cutting filter 3 are the valves 7, at the intersection of the cross-cutting filter 3 with aquifers 2 posted by filter elements 8, excavation 1 branched left and right, made with a bias, providing a leakage intercepted groundwater on the surface, dead ends excavation 1 posted by ventilation hole 5, from mining 1 made itself vodopadnyaya well with 4 filter elements 8. Along the line through the filters 3 are gidroobladnannya wells 10 to control the water level in aquifers 2, through the filters 3 are placed at a distance from each other, defined by the ratio of water filtration and residual piezometric level 11 aquifer mountains is an umbrella 2, rising of vodopadnyaya wells 4 are located apart from each other in increments determined by the permeability of each aquifer 2, for removal of residual groundwater of this aquifer 2.

End-to-end filters 3 is ready for operation after installation at their ends shut-off valves 7. Under the action of gravitational forces water out through the filters 3 and rising dewatering wells 4 drain into mountain development 1. Valve 7 regulates the amount of water produced under the action of gravitational forces in a pump groove 9. Simultaneous operation of all cross-cutting filter 3 provides lower water levels in the aquifer 2, not allowing water to pass further along the slope on the surface and to form landslides. The remaining water is removed itself dewatering wells 4, drilled from the mine workings 1, the water of which is also under the action of gravitational forces is going in a pump groove 9. Monitoring of water levels in aquifers 2 through gidroobladnannya well 10. The total inflow of water from end-to-end filters 3 and rising dewatering wells 4 through the drain groove 9 flows in combining mining and production 1 and then is reset at the bottom point of the surface. Thus, groundwater from aquifers 2 perahu is designed through the filters 3 and rising dewatering wells 4 and under the action of gravitational forces is discharged by gravity on the surface, not bringing the ravages of the earth's surface and all existing structures, i.e. eliminated the formation of landslides.

The advantages of this method are that intercept ground water flows, dewatering and further transfer of water from aquifers on the surface is carried out without the use of any tools and cost of energy. The proposed invention at closing and the flooding of the mines does not allow the formation of landslides in the presence of aquifers, leaving on the surface, ensures the prevention of chaotic movement of groundwater, forming hollows, circuses and landslides, creates adjustable interception, water intake and drain ground water exit on the surface.

The way to prevent landslides, consisting in the interception of groundwater by means of drainage excavation perpendicular to the direction of flow flowing from aquifers water and connected with drilled from the surface vertical wells, which is the end-to-end filters, crossing all aquifers, and drilled from the excavation itself dewatering wells, characterized in that the first low point of the surface under the aquifers with the raising of the om for gravity flow of water are sinking excavation parallel to or at an angle to the direction of flow flowing from aquifers water, then mining production are in different directions perpendicular to the direction of flow flowing from aquifers water, on the stubs of excavation carried out drilling from the surface vertical vent wells and excavation of the Buryat rising, vodopadnyaya wells in aquifers, and surface are drilling vertical wells, which is the end-to-end filters, crossing all aquifers, connect them with Bonami that pass from the mine working, and at the ends of the end-to-end filters set the valves, thus rising vodopadnyaya wells and vertical wells at the intersection with aquifers equip filter elements, and in the mine workings perform dewatering groove with its introduction on the surface, in addition, with the surface along a line through filters Buryats gidroobladnannya wells to monitor water levels in aquifers.



 

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FIELD: hydraulic structures, particularly to consolidate slopes or inclinations to be eroded by ground waters.

SUBSTANCE: method for slope protection against landslide by diverting ground water with the use of drainage mine tunnel, through filters and upward dewatering wells involves excavating mine tunnel beginning from lower point of original ground under water-bearing horizons with tunnel elevation for water gravity flow, wherein mine tunnel extends parallel to direction of water flow from water-bearing horizons; excavating mine tunnel in different directions perpendicular to above flow direction; performing drilling vertical venting wells at tunnel ends beginning from original ground; drilling upward dewatering wells in water-bearing horizons; drilling vertical wells from original ground used as through filters crossing all water-bearing horizons; connecting thereof with cross-headings excavated from mine tunnel; installing valves at through filter ends; providing filtering members at place of intersection between upward dewatering wells and vertical wells with water-bearing horizons; forming water removal channel in mine tunnel and connecting thereof with original ground; drilling hydraulic observing wells beginning from original ground along line of through filters to control water level in water-bearing horizons.

EFFECT: increased reliability; possibility of diverting 85-90% of water contained in water-bearing horizons.

3 dwg

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