SU739236A1 - Method of making dissecting trenches - Google Patents

Description

The invention relates to the mining industry and can be used in open pit mining of minerals. sinking of split trenches.

A known method of sinking of cut t-holes, including trenching a dragline with laying the rock on board the quarry [1].

There is also known a method of sinking split trenches, including layer-by-layer development, perekaskavat and placement of rocks on non-working sides of the quarry dragline [2].

However, both of these methods are characterized by relatively small parameters of the trench.

The aim of the present invention is to increase the parameters of the trench. 'The goal is achieved by the fact that in parallel with the split trench and beyond, on the idle side of the quarry, an auxiliary trench passes, from the rocks of which two flank guards of two-tier dumps are created, which are subsequently dumped from the rocks of the upper layer of the split trench; that the gentle side of the auxiliary trench is carried out along the trajectory of scooping the dump dragline, and the steep one is at an angle that ensures the displacement of the rocks) that the rocks of the upper layer of the split trench are dumped onto the steep side of the auxiliary trench, while re-excavating the indicated rocks into two-tier dumps; that the rock of the lower layer of the split trench is laid in the auxiliary trench.

In FIG. 1-general scheme of mining, works, plan view; - in Fig. 15 2, 3, 4 — transverse sections illustrating the sequence of mining operations.

The method is as follows. Simultaneously and outside the cutting trench 1, an auxiliary asymmetric trench 2 is drained with dragline 3. Part of the auxiliary trench dragline 3 is laid directly in the pioneer embankment 4, and 25 the rest of the breed is re-excavated through intermediate position 5 in the second entry 6 into the far pioneer embankment 7 In the future, the pioneer embankments 4, 7 serve as flanking 30 preliminary guards. The bottomhole dragline processes the top layer 9 of the cutting trench and places the rock on the steep side 10 of the auxiliary trench, where the rocks move when they work part-time with the dump dragline 11 installed as a preventer 4. The dump dragline 11 works in parallel and on the same axis as the bottom dragline 3. The dump dragline 11 re-excavates the rock from the upper ridge 9 of the split trench, laying it in two-tier dumps 12 located between the two flank pre-guards 4, 7. Then the lower layer 13 of the split trench is worked out with a dragline 14, storing the rock directly in the auxiliary trench, creating a safety platform 15 on board the quarry. The stability of the two-tier dumps 12 is achieved due to the safety pads 16, 17 created on the flank dumps. One side of the asymmetric trench 2 'is carried out at an angle that ensures the movement of rocks along it "and the other side 18 coincides with the trajectory of scooping the dragline 3.

This method will increase the parameters of the trench.

Claims (4)

The invention relates to the mining industry and can be used in the open cast mining of minerals at. excavation of split trenches. There is a known method of penetrating open-cut trenches, including the driving of a trench by dragline with laying rock on board pit 1. There is also a known method of penetrating split trenches, including layer-by-layer development, re-excavation and placement of rocks on the non-working sides of the open pit by dragline 2. However, both of these methods are relatively the small parameters of the trench. The purpose of the present invention is to increase the parmeters of the herbs of the neck. The aim is achieved by the fact that parallel to the cutting of the herbs of the neck and beyond it The working board of the quarry passes an auxiliary trench, from the rocks of which two flank pre-dumps of two brown dumps are created, which are subsequently poured from the rocks of the upper layer of the split trench that the gentle side of the auxiliary trench is carried out along the trajectory of the dump tailing dragline and steep at an angle providing the movement of rocks; that the rocks of the upper layer of the split trench are poured onto a steep, side of the auxiliary trench, at the same time re-excavating these rocks into two brown heaps; that the rocks of the lower layer of the split trench are laid in the auxiliary tranFa of FIG. 1 is a general mine management scheme, a glider view of FIG. 2, 3, 4 - cross-sections illustrating the sequence of mining operations. The method is as follows. In parallel and outside the split trench 1, an auxiliary asymmetrical trench 2. dragline 3 is laid. Part of the auxiliary trench rock drags the 3 straight lines into the pioneer embankment 4, and the rest of the rock with re-excavation through the intermediate position 5 in the second approach 6 into the far pioneer embankment 7. In the future, the pioneer embankments 4, 7 serve as flank front ends. The bottomhole dragline 8 processes the upper layer 9 of the split trench and places the rock on the steep side 10 of the auxiliary trench where the rocks move during their underworking with the tail dragline 11 installed on the preventer 4. The dump dragline 11 runs sparenko and on the same axis with the bottom hole dragline 3. dragline 11 perekskaviruet rock from the top 9 of the split trench, putting it in two brown from the shafts 12, located between the two flank predvallyah 4, 7. Then work out the lower layer 13 of the split trench dragline 14, to store the rock directly into the auxiliary trench, creating a protective platform 15 on board the quarry. The stability of the two brown heaps 12 is achieved by means of the safety pads 16, 17, created on the flank front spools. One side of the asymmetrical trench 2 is held at an angle to move rocks along it, and the other side 18 coincides with the trajectory of the black dragline bucket 3. This method will increase the parameters of the trench. , Claim 1. The method of excavating the split trenches, including layer-by-layer development, re-excavation and placement of rocks on the non-working sides of a dragline-pit open pit, is characterized by the fact that, in order to increase the parameters of the trenches, parallel to the split trench and beyond its limits on the non-working board an auxiliary trench, from the rocks of which two flank ones are created to prevent two brown heaps, which are subsequently poured from the rocks of the upper layer of the split trench. 2. A method according to claim 1, characterized in that the gently sloping side of the auxiliary trench is carried out along the trajectory of the bucket of the tailing dragline, and the steep one - at an angle ensuring the displacement of the rocks. 3. The method according to claim 1 is also distinguished by the fact that the rocks of the upper layer of the split trench are poured onto the steep side of the auxiliary trench, at the same time perekskaviru said rocks in two brown heaps .-. 4. The method according to p. 1, about. T l and h ayusch and the fact that the rocks of the lower layer of the split trench are placed in an auxiliary trench. Sources of information taken into account in the examination 1. Yu. A. Vetrov Excavator face, Kiev, GIZTBHLIT, 1955, p. 93. 2, Bulychev V.V. and others. Development of iron ores by the open method, Sverdlovsk - M., Metallurgizdat, 1953, p. 333-334. 13 m if ig.2 Fig.Z 17 i3S g3; A ;; .. jL.vi; xi; xJ ; 5 i5C: C4vvsV4 vsj4 y4 "vs4 w4V o 4 iv / tf "Y.