SU1146450A1 - Method of protecting undermined structures and natural objects when working suits of mineral beds - Google Patents

Abstract

METHOD FOR PROTECTION moonlighting STRUCTURES AND NATURAL OBJECTS IN DEVELOPING SWEET FORMATION OF MINERAL comprising conducting sewage works and contouring safety pillars under guards emym object of tlichayuschiys in that, with a view to reducing the loss of minerals in the pillars at simultaneous preservation guards the object to, safety pillars in the upper layers, the formations contour along the boundary angles to form in the massif under the protection of an object of 1 m and on the earth's surface, zones of rarefaction , and after finishing the process of displacement in the upper layers, the dimensions of the remaining columns in the lower layers of the suite are reduced by working them to the size of the target column of the lower rigging left in the upper layers of the suite, and the number of the upper layers is determined from the excretion (L Zm

Description

I The invention relates to the mining industry and is intended to protect the undermining facilities and natural objects when developing suites of minerals. A method of protecting undermining facilities 1 is known. However, this method is characterized by insufficient efficiency. There is a known method of protecting undermined minerals and natural objects when developing suites of minerals, including cleaning works, and the protection pillars are under the guise of a protected object 2. However, this method characterized significant lossy field Nogo fossil in pillars leaving employed for the object to safety guards. The aim of the invention is to reduce the loss of Molro mineral deposits in the pillars of the simultaneous preservation of the protected object. The goal is achieved by the fact that according to the method of protection of structures and natural objects to be worked out when developing suites of mineral resources, including cleaning works and delineating safety pillars under a protected object, safety pillars in upper layers of the suite outline the boundary corners before they form in an array by the protected object and on the earth's surface by the sludge rupture of rock continuity, and after the end of the process of displacement in the upper layers these layers of the suite reduce their development to the size of the lower layer of the reservoir left in 502 upper layers of the suite, while the number of the upper layers is determined from the expression X.t (0.003 7- 0.005), where rm is the total thickness of the upper layers of the suite, with which forms a discontinuity of the rocks during the contouring of safety pillars, m} Hsr - the average depth of the layers, m. The method is as follows. To protect a protected object from the harmful effects of underground mining, from the expression 2t (0.003f 0.005) Hep determine the number of formations, the total excavation capacity of which provides conditions for the formation of zones of rupture of the continuity of the layers of the rock mass produced. In these seams, safety pillars are built at the boundary corners and left. The mining of mineral reserves around these pillars are carried out by known methods of cleaning works. After contouring the pillars along the upper layers of the retinue and after a time with a total duration equal to the time of the displacement process, zones of looseness of the rock layers are formed in the massif. The movement of the rock mass from the mining of the underlying layers is limited to these zones. The sizes of safety pillars in these layers are reduced to the size of the pillar of the lower layer left in the upper layers of the suite. This method will significantly reduce the loss of mineral in the pillars while maintaining the protected object.

Claims (1)

METHOD FOR PROTECTING CONSTRUCTED CONSTRUCTIONS AND NATURAL OBJECTS WHEN DEVELOPING THE FORMATION OF USE OF MINERAL FOSSILS, including cleaning operations and the contouring of safety pillars under the protected object, characterized in that, in order to reduce the loss of useful 'minerals in the target in the upper strata, the formations are delineated along the boundary angles until they form in the massif under the protected object and on the earth's surface the zones of discontinuity of rocks, and At the end of the displacement process in the upper layers, the dimensions of the left pillars in the lower layers of the suite are reduced by working them off to the size of the pillar of the lower layer left in the upper layers of the suite, while the number of upper layers is determined from the expression = (0.003 v 0.005) Нср, where £ t - the total thickness of the upper layers of the suite, at which a discontinuity of the rocks is formed during contouring of the pillars, M, ' Εαρ - average depth of bedding, m. „SU .1146450