SU829948A1 - Method of working ore deposits - Google Patents

Description

(54) METHOD FOR DEVELOPING MINERAL DEPOSITS

one

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

There is a method of developing ore deposits floor collapse with areal release of broken ore under cut off along the contour of the part of the intermediate floor pillar l.

There is a method of developing ore deposits with the collapse of the area of release under covering rocks, including the drilling of drilling and transport workings with the formation of the bottom of the block, drilling and blasting blasting of minerals, areal ore production under covering rocks.

This method has a high performance of 2J.

The disadvantage of this method is the clogging of ores; s covering rocks.

The purpose of the invention is to reduce the laboriousness of creating artificial dividing floors from waste rock. The purpose of the invention is to ensure that after the ore is released from the upper floor, the transport outputs of the said floor are isolated from

empty rocks and from them drill up an array of ore over the transport workings until the wells reach the empty collapsed rocks, after which the said rocks are injected into the empty rocks in a slurry solution.

At the same time, before feeding into the remaining solution, the collapsed waste rock is washed through the wells with water.

In addition, the lower part of the waste rock is firstly injected to a height that at least ensures the overlapping of the roadways, and after the solution has hardened, the remaining necessary amount of waste rock is injected.

After the ore has been released from the overlying floor, cementation of waste rock is carried out on the excavated bottom and filled the developed cleaning space. This makes it possible to significantly relieve the former transport workings, reduce their destruction, which subsequently ensures safe working conditions for drilling, drilling and producing explosives; works in the ridge of the waste bottom, as well as the ore massif of the underlying floor. High quality fine crushing

part of the collapsed block helps to reduce the clogging of ore by overlying rocks In addition, cemented overburden in large pieces can reduce clogging of the ore. It is not necessary to obtain a common shield of cemented waste rock over the block being worked out, capable of withstanding the pressure of the overburden and the formation of empty waste space under it. The drawing shows a schematic diagram of the method for developing ore deposits with collapse and areal release under the overburden (projection onto a vertical plane along the strike of the deposit).

The diagram shows dashed lines 1 as block boundaries, and dashed lines 2 show floor boundaries. The overlying floor is completely exhausted and the space 3 is filled with covering waste rocks 4. On the lower floor of block 5, there is a release of broken ore used by large pieces of artificial cement 7 that have been cemented from block 8. An array of ore is drilled by a set of wells 12 for breaking. Jumpers 14 are installed in the exhaust workings 13 on the upper floor, wells 15 are drilled from the former transport workings 9 to inject the hardening solution 16 into the voids between pieces of waste rock 4 in the spent treatment space 3. Mining and cutting works are carried out in block 17.

Primer p. The division of the pools into floors, and the floors into blocks, as well as the holding of mining and rifled workings, and the design of the bottom are well known. After the ore is released from the exit, the hemline 14 in the exhaust workings 13 install jumpers 14, isolate the former transport workings 9 from cleansing space 3 filled with flat rocks 4. From the former transport workings 9, drill 15 to inject a hardening mortar, eg the mixture 16, into the spent cleaning space 3 to fill the voids between the pieces of overburden 4. The filling height is determined by the condition of the subsequent formation of large pieces 7 of cemented empty he City of. After hardening the solution 16, a reliable overlap is created, which prevents the former transport excavations 9 from being destroyed for a time when the front of the refining operation approaches this site (3-5 years), then the hole sets 12 of the ore massif below are drilled. Reliable overlap of cemented waste rock allows additional drilling workings 10 to be made in the immediate vicinity of the treatment space, which ensures uniform array drilling and high-quality crushing. After blasting, areal production of broken ore 6 is carried out under the cover of large pieces 7 of cemented waste rock. cleansing prostraction and the cycle repeats. As the deposit is mined at the bottom of each subsequent floor, the number of large pieces of cemented waste rock increases, which contributes to reducing the consumption of hardening mortar and reducing the clogging of the ore by the overburden. The proposed method of field development with collapse and areal release under covering rocks allows to keep production

in the spent bottom, strengthen the array, which makes it possible to evenly drill an array of ore in the underlying horizon. High-quality crushing

and the release under cover of artificially created large pieces of waste rock can significantly reduce the clogging of ore by covering rocks. Before filling the voids between pieces of overburden in the developed cleaning space, wells 15 flush over the overburden with n-he and bottom workings (funnels, trenches) to remove fines and clay in order to ensure high strength of the cemented mass waste rocks.

In order to ensure the solidity of the cemented mass of waste rock and to a great height, the filling process is carried out in two stages; This makes it possible to obtain a cemented massif of greater height, to increase its dimensions, which helps to reduce the clogging of the ore. If the upper mass of ore in the block is well crushed, and the release is carried out under the cover of large pieces of cemented waste rock, then the quality indicators of the output will improve. In addition, hardening solutions fill the voids.

Claims (3)

Claim 1. A method of developing ore deposits, including drilling and transporting holes with the formation of the bottom of the block, explosive blasting of ore in the floor, its areal discharge under artificially created lowering dividing floors from. covering gangue, characterized in that, in order to reduce the complexity of creating artificial separating floors from gangue, after the release of ore from the overlying 3 floors isolate the transport workings of the specified floor from waste rocks and from them drill an ore mass above the transport workings before the wells exit to the empty collapsed 5 rocks, after which empty rocks are injected through these wells. astringent solution. 2. The method according to claim 1, characterized in that before feeding, "cementing solution through the wells. washed collapsed waste rocks with water. 3. The method according to PP. 1 and 2, which is different from the fact that first they inject the lower part of the empty 15 genus to a height of at least providing overlapping transport workings, and after hardening the solution, the remaining necessary volume of waste rock is injected. 20 Sources of information taken into account in the examination 1. USSR copyright certificate W 232176, cl. E 21 C 41/06, 1967. 2. Enikeev A.N. Progressive 25 equipment and technology in underground mining. Express information, ser. 1, no. 6, Chermetinformation, 1976, p. 10-15. Z ВНИИПИ Order 3626/74 Circulation 627 Subscription Branch of PPP Patent, Uzhhorod, st. Project, 4