SU1254152A1 - Method of conveyer-free driving of wide trench - Google Patents

Description

12

The invention relates to the mining industry and can be used in open pit mining.

The purpose of the invention is to reduce the amount of re-excavation of rocks and increase the safety of excavation equipment.

FIG. and 2 shows the schemes of the transport-free penetration of wide trenches during the first and second parts of the work in the method.

Inside the future trench I, a wide trench 2 extends to its bottom and forms the bead 3 of the wide trench, the auxiliary trench 4 on the side of the blade and the side 5 of the wide trench at the first course of the EH No. 1 and EH No. 2 (or alternately one dragline). The rocks of the split trench 2 are placed in a temporary pile of 6 between the auxiliary and split trench, and the rocks of the secondary section are placed in the pile of the avs.

During the second run of the ESh No. 1, the temporary bulk 6 is re-exported to the temporary bulk 7 on board Je of the auxiliary trenches and thus creates a single, single berth felling height H, equal to the sum of heights (h) of pile 7 and board (h) of 4 () J for transporting rocks by gravity. The horizontal distance of the rocks S is O S H ctgoi ((/ is the angle of natural repose of the rocks). When using modern machines, for example, EL-15/90 in weak rocks, this value reaches an average of 60-90 m and can be increased due to the increase in the level of one hundred dragline practicing the approaches between the split trench and the bulk 7.

During the third run of the ES No. 1, the entry 8 and its rocks along the fe slope consisting of the slopes fd and de sides of the auxiliary trench from the side of the dump 9 are transported into the auxiliary trench. With the second move of EHS No. 2 from the fe slope, the volume of rocks 8 is re-excavated from the felling to the fe slope to the bulk aghca. ,

In the fourth course of the ES No. I, the volume of rocks 10 from the next is fulfilled.

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the entry between the split trench and the bulk of rocks 7 and transport it along the fe slope into the Ikneml prism with partial or full backfilling of the auxiliary trench. At the same time, during the third run of EL No. 2, the ghcad prism is transferred to the opho bulk, freeing up space for the subsequent placement of new volumes.

 With the help of ES N I reexcave part of frsmf pile 7 and work out the volume of stuvs rocks and transport them along the Ik heap of the Iknedsl pile by unloading the EH Dragone dipper onto the upper part of the Ik slope and drawing the rocks from Ik and re-excavating them into the pile of a chc and EL No. 2 at its fourth course.

With the sixth move, the ASE I re-exported with the upper scoop in front along the volume Id e 1 and behind the lower scoop they work out the prism sdg h ts, placing the rocks in a pile k fkl bm k. By means of ES 2, they reextract the knok volume with the upper scoop, the volume knok with the lower scoop and the volume g eh g and 1 npl up to the limit contour of the t wide trench, placing the rocks in the pile with the bab and with t g The sixth move of Eu No. 2 reexamines the volume of ruva into a prism and pot u, forming a heap in contours absv a. In the case of expediency of further increasing the height of the blade 9, this volume is not over-exported, leaving the blade in the contour sgt ops.

The presence of a high slope fe, which determines the size of its foundation, H ctgoL60-90 m, provides deconcentration of the dump and working draglines across the cross section of the trench in case of their work on the same axis. This improves the conditions for safe work.

The proposed method can be used in the development of trenches with equal strength along its depth: layers of rocks, while the described operations are performed in a layer of weak rocks and thus reveal a layer of hard rocks, for example burners, which are then worked out in known ways with trenches using drilling and blasting operations.

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Editor K. Vol'shchuk

Compiled by V. Tychina

Tehred M. Morgental Proofreader L. Patay

Order 4698/36

Circulation 470 Subscription VNIIPI USSR State Committee

for inventions and discoveries P3035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Claims (1)

METHOD FOR WITHOUT TRANSPORT DRILLING OF A WIDE Trench, including excavation of rocks in the contour of a wide trench by successive approaches with the formation of its sides, excavation of an auxiliary trench, excavation of excavated rocks in the contour of a wide trench into an auxiliary trench and their subsequent re-excavation into a dump on board a wide trench, that, in order to reduce the volume of re-excavation of rocks and increase the safety of mining equipment, by digging an auxiliary trench form the side of a wide trench from the side of the dump, and the excavation of rocks in the contour of the wide trench and the formation of its opposite side begin by cutting the trench, with the auxiliary and split trenches going to the full depth of the wide trench, and the excavation of the rocks in the leads lead from the split trench with their placement between the auxiliary and the cut trench in the bulk and form a single slope of the bulk and side of the auxiliary trench, while the rocks from the further excavation of fillings are dumped onto the specified slope. „SU„ „1254152 * 1254152