The article explores the potential for modification of the well-known salt cavern leaching process for brine production or/and hydrocarbon or hydrogen storage facilities, enabling the acceleration of the pace of acquiring new storage capacities with their increased geomechanical stability. The innovative technology is based on the use of high-pressure water jet technique for disc niche cutting in salt rock. The effect of such operations is a significant increase in the contact area of the water with the rock during cavern leaching and faster concentrated brine recovery already in the first leaching phase. This aspect was tested in 67 tests performed for three different types of rock salt: green, pink, and Spiza salt. Laboratory tests of the successive cutting of niches with a stream of water at 500 bar were carried out. The effectiveness of water jet was demonstrated and the possibilities of effective cutting of niches. Significant relationships were found between the obtained depth of niches at a given stream pressure and the duration of individual operations. Depending on the type of salt, the rate of increase in their depth was determined. The presented test results precede the much larger upscaling project, currently at the preparatory stage.

Tre : S one jeziora oraz z o a ewaporatów jezior s onych w Turcji s wa nym ród em chemicznych surowców mineralnych. Pozyskuje si z nich g ównie: borany, w glany sodu, siarczany sodu oraz sól (chlorek sodu). Jeziora s one p askowy u anatolijskiego s zró nicowane pod wzgl dem chemizmu wód i warunków ewaporacji. Równie neoge skie (trzeciorz dowe) z o a ewaporatów jezior s onych w tym regionie charakteryzuj si specy cznym, cz sto unikatowym sk adem mineralnym. Zapoznanie si z warunkami ewaporacji i sedymentacji w s onych jeziorach oraz z budow geologiczn i eksploatacj z ó ewaporacyjnych jezior s onych by o celem geologiczno-górniczego seminarium Polskiego Stowarzyszenia Górnictwa Solnego (PSGS), które odby o si w Turcji w dniach od 7 do 14 wrze nia. Na trasie wyprawy znalaz y si : s one jeziora Salda i Tuz, z o e i kopalnia boranów Kirka oraz z o e i kopalnia siarczanów sodu Çayirhan. Podczas seminarium odwiedzono równie : miejscowo Pamukkale z gor cymi ród ami, z których krystalizuj trawertyny, z o a znanych od czasów staro ytnych marmurów w rejonie Iscehisar-Afyon oraz p askowy Kapadocji ze s ynnymi formami erozji i wietrzenia.

In the article the actions are presented, which were undertaken to restart the exploitation in chamber KS-21 on working level 600 in the "K odawa" Salt Mine. The chamber had not been extracted during the exploitation of working level 600 because of the fact that the heading was the way of haulage of excavated material from the so called "part A" of the chamber. The re-exploitation in that place requires getting a deviation from the operative rigour in connection with driving the heading in the salt diapir. In order to attain that, many activities were done to con rm the hypothesis that re--exploitation does not threaten the stability of eld number 2.

Based on laboratory tests of selected properties of secondary waste (ashes and dusts) from municipal waste incineration plants, the possibility of recovering some properties of waste in the process of filling the post-mining voids in the salt mine was assessed. The furnace bottom ash and the waste from the flue gas treatment from one of the national incineration plants were examined. The grain curves of dry waste and the density of the prepared mixtures were characterized. Twelve variants of the compositions of ash-based mixtures with varying proportions of the individual components were considered, taking into account both fresh water and brine. For each variant of the composition, the amount of redundant liquid appeared as well as the time of solidifying of the mixture to a certain strength and the compressibility values obtained. Considering the possibility of transporting mixtures in mines by means of pipelines at relatively long distances, and allowing the filling of large salt chambers to be filled and evenly filled, flow parameters were determined. In addition, the permeability of solidified waste samples was investigated, showing the potential for reducing the strength of the waste mass due to the action of water or brine. The technical feasibility of eliminating redundant liquid in the binding process has been confirmed, which is particularly important in salt mines. Preliminary values for the amount of binder (5%÷10%) to be added to the mixtures to obtain the specified strength properties of the artificially formed mass at Rc = 0.5 MPa. Attention was paid to the important practical aspect resulting from the rapid increase of this type of waste in the comming years in Poland and at the same time vast potential for their use in salt mining, where we have a huge capacity of salt chambers available.