SU1323720A1 - Method of mining potassium deposits - Google Patents

Abstract

This invention relates to the mining industry and reduces mineral loss in safety pillars. Pass t preparatory and rifled workings. Safety pillars are formed 2. In the pillar 2, on the side of the mouth, the wellbore is restored to the upper limit of the salt-bearing bed. Restored parts of trunks ta.mponiruyut. The downhole wells are opened by openings 7 and the wellbore sections are restored from the bottom to the specified boundary with subsequent plugging. Then, safety pillars are removed by 2 chambers with the formation of an inter-chamber chamber pillar 9 in the well-housing well. After the mineral resources are extracted, the developed space is filled with backfill material. 2 silt SP y-4 with 00

Description

The invention relates to the mining industry and can be used in underground mining of ores in potash deposits.

The aim of the invention is to reduce the loss of mineral in safety pillars.

FIG. 1 schematically shows a vertical section of the chambers in the plane of the exploration well; in fig. 2 shows section A-A in FIG. one.

In Figs. 1 and 2, the exploration well 1, the safety sight 2 of the exploration well, saline rocks 3, the ventilation drift 4, the transport drift 5, the chamber walker 6, special production 7, the cleaning chamber 8, between chamber pillar 9 and the filling material 10.

The method is carried out as follows.

The preparation of the cleaning chambers 8 for development consists in carrying out a ventilation drift 4, a transport drift 5 and a chamber walker 6. Before excavating the mineral reserves in the safety pillar 2 of the exploration well 1 from the mouth of the well, the wellbore is restored to the upper limit of the occurrence of saliferous rocks 3. The restored section of the well tampon. Thereafter, a special exit 7 is passed from the chamber walker 6, which opens the bottom of the exploration well. 1. From the special production 7, the wellbore 1 is restored in the direction of its mouth, and then tamponing is performed.

The development of the cleaning chambers 8 begins with the formation of a compensation space. Then, they start drilling wells, charging and blasting charges into them from chamber passes 6. Repulsed ore is delivered to the transport drift with the aid of mechanisms 5.

The breaking of the ore in the treatment chambers 8 can be dried, and mechanized with the help of combines. The ore, recovered by the combine, enters the bunker-loader, then it is transported by a self-propelled car to the transport drift 5.

In order to firmly maintain the overburden, between the cleaning chambers 8, interchamber pillars 9 are formed, and when mining reserves in the security pillar 2, the interchamber pillar 9 is formed in an array containing a geological exploration well 1. After dredging the reserves in the cleaning chambers 8, the developed space is filled bookmark

material 10, which can be used waste rock from the excavation of mine workings, production waste and other materials.

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Claims (1)

Invention Formula A method of developing potash deposits, which includes sinking preparatory and rifted openings, excavating minerals with chambers with the formation of interchamber pillars, forming pSC safety pillars near the previously passed through interfering and salt-bearing rocks of geological exploration wells, and laying the spent space, characterized by , in order to reduce the loss of mineral in safety pillars, the well bore from the mouth side is restored to the upper limit of the salt bed Posnov sawmills and reconditioned portions tamponiruyut trunks, then the wells' faces are opened with workings and the trunk sections are restored from the bottom to the specified border with subsequent plugging, after which the safety pillars are removed with chambers forming an interfering well array interchamber pillars.