The method of protection mezhdurebernyh pillars from destruction

 

(57) Abstract:

The invention relates to mining and can be used in underground development of powerful horizontal flat and sloping ore and non-ore deposits, in particular, to protect and maintain mezhdurebernyh pillars. The method includes creating at the external contour of the pillar of support and is characterized by the fact that the outer contour of the rear sight in the soil cameras are drilling wells, install them in vertical piles, which are rigidly secured between the ties, missing on drilled through the rear horizontal wells, installed between the piles vertical formwork along the contour of the rear sight and fill the free space between the whole and formwork hardening bookmark. The use of the proposed method will significantly improve the safety of the pillar due to the high stability of the formed concrete structures. 2 Il.

The invention relates to mining and can be used in underground development of powerful horizontal flat and sloping ore and non-ore deposits, in particular, to protect and maintain mezhdurebernyh pillars (MCC).

Known way before the material supplied to the treatment chamber after the initial seizure.

However, the known method has the disadvantages associated with low resistance, significant complexity and high material costs.

Object of the present invention is to improve the sustainability of MCC and reduced labor and material costs to achieve it.

This object is achieved in that the outer contour of the rear sight in the soil cameras are drilling wells, install them in rigid vertical piles, which are secured between the ties, missing on drilled through the rear horizontal wells, installed between the piles vertical formwork along the contour of the rear sight and fill the free space between the whole and formwork hardening bookmark.

The proposed method allows a reliable protective device at a low cost, which will ensure the sustainability of MCC.

The essence of the invention is illustrated in the following description and the accompanying drawings, in which Fig. 1 shows a cross-section mezhdunarodnogo barrier pillar in Fig. 2 is a plan section a - a of Fig. 1.

1 - Mezhdunarodny barier screed; 6 is a vertical formwork; 7 - consolidating backfill.

The proposed method is performed as follows. In the soil chamber along the walls of the pillar 1 along its length are drilling vertical wells 2, which reinforce concrete pipe 3. At the level of the upper and lower boundaries of the data pipes in the rear sight, drilled horizontal wells 4 through which through the rear sight metal ties are ignored (cables) 5. Screed rigidly fixed to the tube 3 at the top and bottom. The entire space between 1 and formed by the frame (casing) 6 is filled with hardening tab 7, providing after hardening stiffness, rigidity and stability of the whole structure.

The use of the proposed method will significantly improve the safety of MCC due to the high stability of the formed concrete structure.

The literature taken into consideration are:

[1] USSR Author's certificate N 1555490, M. CL.5 E 21 C 41/16, 1988 .

The method of protection mezhdurebernyh pillars from destruction, which consists in creating the external contour of the pillar of support, characterized in that the outer contour of the rear sight in the soil cameras are drilling wells, install them in cm vertical wells, set between the piles vertical formwork along the contour of the rear sight and fill the free space between the whole and formwork hardening bookmark.

 

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