RU1799412C - Method for withdrawal of mineralized water from underground mine working - Google Patents

Abstract

Usage: drainage of underground workings with the influx of mineralized water to them. SUMMARY OF THE INVENTION: hydrogeological and hydraulic engineering observations are carried out to determine the degree of mineralization and average annual inflow of groundwater, the construction of a catchment system with water receivers, and the withdrawal of groundwater to the surface. After the construction of the drainage system, receivers for low saline water are formed. The latter are connected by means of culverts with a water intake system, during the construction of which additional low-saline water receivers connected to it are formed. 2 ill.

Description

The invention relates to the construction and mining, in particular, to the drainage of underground workings under the conditions of influx of mineralized groundwater thereto.

The purpose of the invention is to provide separate drainage of low and highly saline waters to the surface.

The method is carried out in existing underground mines having initially a single drainage system, and in the process of its implementation, its reconstruction is carried out.

The system of underground workings includes, for example (Fig. 1), a vertical shaft 1 and horizontal 2 or inclined 3,4,5 workings located at different depths and conducted through layers 6 of minerals, for example coal or

enclosing strata of minerals rocks.

The initial mine drainage system (FIG. 1,2) includes a pumping station 7 located. near the barrel 1, water collectors 15, devices for regulating the mine flow. Highly saline groundwater 8 and low-saline water 10 come from the deep parts of the rock mass from the deep parts of the rock mass.

During the drainage of underground workings, hydrogeological and hydrogeochemical regime observations are made, the distribution boundary of low- and highly-mineralized groundwater is found 11, and mineralization values are determined

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and water inflows of separately high and low mineralized mine waters.

After that, two drainage systems are constructed at the mine - the upper one above the boundary 11 for collecting and discharging low-saline waters and the lower one below this border for collecting and discharging highly-mineralized waters. The initial links of the upper drainage system (drainage grooves, pipelines, local water collectors, transfer pumps) are placed in the openings into which the overwhelming majority of low-mineralized water 10 from the overburden 9 enters.

The lower drainage system is formed from the lower part of the initially unified drainage system with a pumping station 7 serviced by the electrical substation 20. Between the horizons of the upper and lower drainage systems, waterproofing measures are taken to prevent low-saline water from entering the lower drainage system.

The composition and scope of hydrolysis is determined depending on the geological structure, mining methods, their degree of preservation, and taking into account the results of operational observations of the influx of low and highly saline waters. Work on isolating the lower drainage system from the upper includes the construction of barrier pillars, the construction of waterproof bridges in the workings, the restoration or sinking of the necessary workings, the equipment of drainage grooves, pipelines, and pumping units.

The creation of the upper catchment system is completed by the construction of devices for transferring low-saline water 10 to the horizon on which the existing central drainage is located, as well as the construction of an additional pair of catchment 14, which is the final collection point for low-saline water, at the same time.

As a water transfer device, a well 13 may be used drilled from a low-saline water collection point located above the distribution boundary of low- and high-saline groundwater. In other embodiments, bypass can be carried out through pipelines laid along vertical or inclined mine workings. The low-mineralized water 10 is transferred by one or several autonomous water-transfer devices, their quantity and location determine the outcome of the existing catchment scheme and economic considerations. At the same time, measures are taken to ensure that the bypassed waters, both during bypassing and on the lower horizon, are not fed by highly mineralized waters 8.

enclose in pipelines.

As the final link of the lower catchment system, an existing pair of catchments 15 is used.

Low- and high-saline water is removed from the mine alternately, using, if necessary, the entire resource of the central drainage system - drainage plants, wells 17 with suction pipelines, discharge

pipelines laid in the pump 7, pipe walker 19, vertical barrel 1.

Water supply to the collector of a 16th or other water collector, as well as switching from one drainage unit to another

produced by the corresponding valves 18 at the water collectors and wells, which are controlled by means of spindle extensions with handwheels. When switching the pumping station from the water collector of one pair to the water collector of another pair at the same time on the surface of the mine with the help of distribution valves, the discharge from the discharge pipe is switched to the water sump, degree

the mineralization of which corresponds to the mineralization of water in the connected catchment.

The implementation of the proposed method is not possible if the central drainage

there is no room for the construction of a second pair of catchments.

Thanks to the use of the existing complex of drainage devices and some reconstruction of the mine drainage system, the cost of separate drainage of low and highly mineralized mine water to the surface is achieved

Claims (1)

Invention formula A method for diverting mineralized water from underground workings, including carrying out hydrogeological and hydraulic measurements with the determination the degree of mineralization and average annual groundwater inflow, the construction of a catchment system with water inlets for highly saline water and the discharge of groundwater to the surface, characterized in that, in order to ensure separate drainage of high and low saline water, after the construction of the catchment system, the formation of receivers for low saline water is carried out and the latter are connected 9 S / -D by means of culverts with a water intake system, and during the construction of the latter, additional receivers of low saline water are connected to it. YU