SU912937A1

SU912937A1 - Method of preparing a block bottom

Info

Publication number: SU912937A1
Application number: SU802954145A
Authority: SU
Inventors: Леонид Григорьевич Настобурко; Александр Ефимович Полонко
Original assignee: Научно-Исследовательский Горнорудный Институт
Priority date: 1980-07-09
Filing date: 1980-07-09
Publication date: 1982-03-15

Description

Изобретение относится к горной промышленности и может быть использовано при подземной разработке месторождений полезных ископаемых.The invention relates to the mining industry and can be used in underground mining of mineral deposits.

Известен способ подготовки днища блока при котором выше горизонта доставки в дни- ⁵ще образуют рудоприемные траншеи и выпускные щели [1].There is a known method of preparing the bottom of the block in which ore receiving trenches and outlet slots form in the bottom ⁵ days above the delivery horizon [1].

Наиболее близким к предлагаемому является способ подготовки днища блока, вклю-. чающий проведение выработки доставки, вы- 10 пускных выработок, буровой выработки для образования рудоприемной траншеи и проведение самой траншеи [2).Closest to the proposed is a method of preparing the bottom of the block, including. learning the delivery development, the 10 output workings, the drilling production for the formation of the ore receiving trench and the trench itself [2).

Недостатком данного способа является сравнительно большие затраты на подготовку днища блока. ¹⁵ The disadvantage of this method is the relatively high cost of preparing the bottom of the block. ^fifteen

Цель изобретения — уменьшение затрат на подготовку днища блока путем сокращения числа проводимых горных выработок.The purpose of the invention is to reduce the cost of preparing the bottom of the block by reducing the number of mine workings.

Поставленная цель достигается тем, что выработку доставки и выпускные выработки* 20 проходят одновременно, а отбитую при проходке выпускных выработок руду частично выпускают до образования в верхней части выпускных выработок свободного простран2 ства, с почвы.которого производят проходку рудоприемной траншеи.This goal is achieved by the fact that the delivery output and output openings * 20 pass simultaneously, and the ore beaten during the excavation of the output openings is partially exhausted until a free space is formed in the upper part of the exhaust openings, from the soil, which the mine receiving trench is excavated.

На фиг. 1 представлено рудное тело при подготовке днища блока, продольный разрез; на фиг. 2 — разрез А—А на фиг. I; на фиг. 3 — рудоприемная траншея в момент ее образования, продольный разрез; на фиг. 4 разрез Б—Б на фиг. 3.In FIG. 1 shows the ore body during the preparation of the bottom of the block, a longitudinal section; in FIG. 2 — section A — A in FIG. I; in FIG. 3 - ore receiving trench at the time of its formation, a longitudinal section; in FIG. 4, section B — B in FIG. 3.

Подготовка днища блока осуществляется в следующей последовательности.Preparation of the bottom of the block is carried out in the following sequence.

Одновременно с проведением доставочной выработки 1 засекают ниши 2 для проходки щелей 3. После установки крепления 4 из ниши 2 проходят щели 3 (высотой, равной суммарной высоте выпускной щели и буровой выработки), в которых дозированным выпуском отбитой горной массы при помощи механизмов выпуска и доставки образуют полость 5, предназначенную для выбуривания взрывных скважин 6, необходимых для проходки рудоприемной траншеи 7. Полость 5 представляет собой горную выработку с кровлей и боковыми стенками из массива горных пород и подошвой из отбитой горной массы. Участки выработки над междущелевыми целиками 8 проходят одновременно с проход912937 кой щели 3, выбуривая шпуры 9 в целиках 10. Щели 3 проходят под углом, обеспечивающим самотечный выпуск отбиваемой в них горной массы. После образования полости 5 между крепежными рамами устанавливают перемычки И на время производства буро- ⁵взрывных работ в последней. Для образования рудоприемной траншеи 7 последовательно взрывают веера скважин 6. Вспомогательные работы при проходке траншеи 7 выполняют через восстающий 12 и сбойку 13, ко- _1Сторые соединяют горизонт доставки с полостью 5. Выпуск отбитой в траншее 7 горной массы 14 производят через предварительно расперемыченные щели 3.Simultaneously with the delivery excavation 1, niches 2 are cut for driving the cracks 3. After the fastening 4 is installed, niches 2 pass through the cracks 3 (with a height equal to the total height of the outlet gap and the drill hole), in which the beaten rock mass is dosed by release and delivery mechanisms form a cavity 5, designed for drilling blast holes 6, necessary for sinking of the ore receiving trench 7. Cavity 5 is a mine working with a roof and side walls from an array of rocks and a sole from beaten off oh rock mass. The development sites above the inter-slit pillars 8 pass simultaneously with the passage 912937 of the slot 3, drilling the holes 9 in the pillars 10. The slots 3 pass at an angle providing gravity release of the rock mass beaten into them. After the cavity 5 is formed, jumpers And are installed between the mounting frames And for the duration of the drilling and blasting ⁵ in the latter. For the formation of the trench 7 rudopriemnoy successively blow fan wells 6. The auxiliary work when drilling is performed through the trench 7 revolting sboyka 12 and 13, Ko _1C torye delivery horizon connected with the cavity 5. Release chipped in the trench 7 rock mass 14 produced through the gap 3 previously rasperemychennye .

Преимущество предлагаемого способа заключается в сокращении нарезных работ за О счет исключения процесса проходки буровой выработки, предназначенной для проходки траншеи. Буровзрывные работы производят из выработки, которую образуют дозированным выпуском горной массы из выпуск- _#ных щелей, что позволяет снизить трудоемкость и уменьшить стоимость подготовки днища блока.The advantage of the proposed method is to reduce rifling due to the exclusion of the process of sinking of a drilling designed for sinking a trench. Blasting works produced from production, which release dosage form of the rock mass graduates _# nyh slots, thus reducing the complexity and reduce the cost of preparing the block bottom.

Claims

The invention relates to the mining industry and can be used in the underground mining of mineral deposits. There is a method of preparing the bottom of the block in which ore receiving trenches and discharge slots 1 are formed above the horizon of delivery in the bottom. Closest to the present invention is a method for preparing the bottom of the block, including carrying out delivery development, discharge workings, drilling workings to form the ore receiving trench and carrying out the trench itself 2). The disadvantage of this method is the relatively high cost of preparing the bottom block. The purpose of the invention is to reduce the cost of preparing the bottom of the block by reducing the number of mine workings carried out. The goal is achieved by the fact that delivery development and exhaust mining passages simultaneously, and ore repulsed during mining of mining workings are partially released before free space is formed in the upper part of the exhaust mining, from which soil the mining ore trench is made. FIG. 1 shows the ore body in the preparation of the bottom of the block, a longitudinal section; in fig. 2 shows section A-A in FIG. one; in fig. 3 - ore receiving trench at the time of its formation, longitudinal section; in fig. 4 is a section BB in FIG. 3. Preparation of the bottom of the block is carried out in the following sequence. Simultaneously with carrying out delivery development 1, niches 2 are cut for penetrating gaps 3. After mounting 4 out of nests 2, slits 3 pass (with a height equal to the total height of the outlet slit and drilling output), in which by means of exhaust mechanisms and The deliveries form a cavity 5 for drilling out the blast holes 6 that are needed to drive the ore receiving trench 7. The cavity 5 is a mine working with a roof and side walls from a rock mass and a basement of broken rock mass. The excavation areas above the gap gap, with faces 8, pass simultaneously with the penetration of the slit 3, drilling out holes 9 in the pillars 10. The slits 3 pass at an angle ensuring the gravity release of the rock mass repulsed into them. After the formation of the cavity 5 between the fixing frames, the jumpers 11 are installed at the time of drilling and blasting operations in the latter. In order to form the ore receiving trench 7, fans of wells 6 are sequentially blown up. Auxiliary operations during trenching 7 are performed through rising 12 and coupling 13, which connect the delivery horizon to cavity 5. Released mountain mass 14 broken off into trench 7 is produced through pre-slotted slits 3 The advantage of the proposed method is to reduce the cutting work by eliminating the process of penetration of drilling workings intended for the excavation of a trench. The blasting operations are carried out from the excavation, which is formed by the dosed release of rock mass from the exhaust slots, which reduces the labor intensity and reduces the cost of preparing the bottom of the block. The method of preparing the bottom of the block, including carrying out delivery development, final workings and ore receiving trench characterized in that, in order to reduce the cost of preparing the bottom of the block by reducing the number of excavated mine workings, delivery development and exhaust mine workings pass simultaneously and broken off when sinking exhaust workings ore is partially discharged before formation of free space at the top of the exhaust workings, from which the ore receiving trench is made. Sources of information taken into account in the examination 1.Imenitov V.R. Underground mining processes in the development of ore deposits. M., "Nedra, 1978, p. 122-124.

2. Agoshkov M. I. and Terpogosov

3. A. New designs of the bottoms of the blocks with vibratory channels for the production of ore. Mining Journal, 1964, No. 8, p. 23-25 (prototype).

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