Underground water-management system for mines

Abstract

The invention relates to an underground liquid-management system for mines for generating and/or storing energy, for storing and/or cleaning liquids located in the mine, comprising: at least one first store, which is formed by a cavity of the mine, at least one second store, the bottom of which is arranged above the bottom of the first store, at least one line connecting the stores in order to conduct the liquid, at least one pumping device for conveying the liquid through the lines from the first store into the second store, and a geothermal device at least for operating the pump.

1 . Underground liquid management system for mines for generating and/or storing energy, storing and/or cleaning liquids located in the mine (M), comprising:
 at least one first store which is formed by a cavity of the mine;   at least one second store, of which the bottom is disposed above that of the first store;   at least one line, which connects the stores, for conducting the liquid;   at least one pumping device configured for conveying the liquid through the lines from the first store into the second store; and   a geothermal device configured for at least operating the pump.   
     
     
         2 . Underground liquid management system as claimed in  claim 1 , wherein all of the stores are formed by of cavities of the mine. 
     
     
         3 . Underground liquid management system as claimed in  claim 1 , wherein cleaning stages are provided between and/or in the stores. 
     
     
         4 . Underground liquid management system as claimed in  claim 3 , wherein the cleaning stage comprises at least one filter device, configured for cleaning the liquid. 
     
     
         5 . Underground liquid management system as claimed in  claim 4 , wherein the filter device is connected in a fluidic manner to the pumping device such that the liquid is cleaned during a pumping process of the pumping device. 
     
     
         6 . Underground liquid management system as claimed in  claim 4 , wherein the store is filled at least partially with a porous material which forms the filter device. 
     
     
         7 . Underground liquid management system as claimed in  claim 6 , wherein the filter device further comprises:
 at least one substantially horizontally aligned barrier layer for lengthening the seepage path of the liquid, wherein the barrier layer is provided with at least one passage for the liquid, and porous material is located above and below the barrier layer; and   a collecting vessel for collecting cleaned liquid, which extends from the bottom of the store in a vertical direction upwards, wherein the collecting vessel comprises, below the lowermost barrier layer ( 45 ), at least one opening, through which the liquid can flow or seep.   
     
     
         8 . Underground liquid management system as claimed in  claim 7 , wherein the pumping device is disposed in the collecting vessel, and a line extends in a vertical direction upwards out of the collecting vessel into the store, preferably also out of the store itself. 
     
     
         9 . Underground liquid management system as claimed in  claim 7 , wherein the collecting vessel is disposed in such a manner that it is disposed above a connection opening which leads to an underlying store, wherein the collecting vessel surrounds the connection opening. 
     
     
         10 . Underground liquid management system as claimed in  claim 3 , wherein the cleaning stage comprises at least one cleaning device for raising or lowering the pH value of the liquid. 
     
     
         11 . Underground liquid management system as claimed in  claim 10 , wherein the cleaning device comprises at least one chalk layer, through which and/or along which the liquid is guided for the purpose of changing the pH value. 
     
     
         12 . Underground liquid management system as claimed in  claim 1 , wherein, when a store extends over at least one uncontaminated layer and one contaminated layer, an artificial barrier is provided in the store which extends over the layers and extends preferably along an aquifuge which separates the contaminated layer from the uncontaminated layer. 
     
     
         13 . Underground liquid management system as claimed in  claim 1 , wherein the lines extend in a substantially vertical direction upwards out of the store into a store disposed above it or out of the mine. 
     
     
         14 . Underground liquid management system as claimed in  claim 1 , wherein the geothermal device is a primary energy source, and the system further comprises at least one further energy source. 
     
     
         15 . Underground liquid management system as claimed in  claim 14 , wherein the further energy source comprises a wind energy plant, a solar energy plant and/or a pump storage station. 
     
     
         16 . Underground liquid management system as claimed in  claim 1 , wherein a store is formed as a liquid supply, in which liquid is collected and provided. 
     
     
         17 . Underground liquid management system as claimed in  claim 1 , wherein the liquid is water, preferably groundwater and/or surface water or water guided artificially into the mine. 
     
     
         18 . Underground liquid management system as claimed in  claim 1 , wherein separating walls or separating layers consisting of clay or clay rock are provided in the underground liquid management system at the location where contaminated liquids are present or flow through, in order to clean liquids which are contaminated in particular with radioactive substances. 
     
     
         19 . Waterworks for providing drinking water and industrial water, comprising an underground liquid management system as claimed in  claim 15  as a water management system, further comprising an output system for providing the water from the water management system. 
     
     
         20 . Method for operating a liquid management system for mines, comprising:
 pumping a liquid from at least one first store, which is formed by a cavity of the mine, into at least one second store, the bottom of which is disposed above that of the first store, via at least one line, which connects the stores, for conducting the liquid,   wherein the liquid is conveyed by at least one pumping device through the lines from the first store into the second store, and   wherein the pumping device is driven by a geothermal device of the liquid management system.   
     
     
         21 . Method as claimed in  claim 20 , further comprising:
 cleaning the liquid by a filter device of a cleaning stage,   wherein either the filter device is connected in a fluidic manner to the pumping device or is disposed in a fluidic manner in a passage, which connects the stores, such that the liquid is cleaned during the pumping process or as it is conducted through the passage, or   wherein the filter device is formed from a porous material which fills the store at least partially, and the liquid is cleaned as it is conducted through the porous material.   
     
     
         22 . Method as claimed in  claim 20 , wherein a passage is provided between the first store and the second store, wherein the method also comprises
 draining the liquid from the second store into the first store by opening a stop valve provided in the passage, and   generating energy by driving an energy generating device by the liquid drained via the passage, wherein the energy generating device is disposed in the passage downstream of the stop valve.   
     
     
         23 . Method as claimed in  claim 20 , further comprising
 raising or lowering the pH value of the liquid,   wherein the liquid is conducted through a cleaning device, comprising at least one chalk layer disposed in or between the stores.