SU1330316A1 - Method of drying a deposit field - Google Patents

Abstract

The invention relates to mining, reduces the cost and cost of drainage, and increases the reliability and service life of water-reducing wells. Downhole dewatering wells 1 are drilled from mine workings, equipped with production columns 2 with a sump 3 and filters 4 in the water receiving part, gravel dumping 5 and freed from submerged artesian pumps and other equipment. Then, inclined-rising wells 9 are constructed from the drilling 8. The wells 9 are drilled in the direction of the bottom, the filter 4 and the intake part of the wells 1. Between the wells 1 and 9, hydraulic channels 14 are formed by injecting the injection agent into the wells 9, then executing water through wells 9 and form a depression zone. Then torpedoed aquifers. Groundwater is withdrawn from wells 1 through wells 9. 3 Il. Q 9 (Lt. SS 00 about 00 O5

Description

one

The invention relates to mining and can be used for the construction of a combined drainage system in the development of mineral deposits in difficult hydrogeological conditions.

The purpose of the invention is to reduce the cost and cost of drainage and increase the reliability and service life of water-producing wells,

Fig. 1 shows a schematic diagram of an implementation of a method for draining a field after constructing an oblique-recovery drainage wells and the phase of embedding torpedoes in a downward watering well; on f g.2 - section aa in figure 1; FIG. 3 is a diagram of the method after torpedoing and the phase of water flow through inclined wells during the operation period, 1

The method is carried out as follows.

The descending water-lowering wells I (Fig. 1), equipped with production column 2 with settling basin 3 and filters 4, gravel bed 5 and located in aquifers 6, fractured 7 rocks, are released from submerged artesian pumps and other equipment (not shown). After this, inclined-rising wells 9 are constructed from an underground mine working 8 in a directional direction to a sump 3, filters 4, borehole 1 fractured 7 and 6 aquifers located in the lower part of the downhole wells 1, Inclined-rising wells are constructed using milling drill bits. 10 (FIGS. 1 and 2), and in the intervals of unstable Aquifer 6 rocks, a filter column 11 is installed, in stable fractured 7 rocks it is possible to carry out works without a filter column. Then, wells 9 are equipped with technical equipment with a valve 12, as well as water outlets 13. After this, a cleaning agent is pumped through the wells 9 (compressed air and water-air mixture to form and clean the hydraulic channels 14 to communicate with the descending water supply wells 1,

The discharge pressure of the cleaning agent is taken

, 01 (H, - h).

Where

RN. B „0

five

0

pressure in the injection system, MPa;

0.01 - conversion factor, MPa / m;

the depth of the mountain cave, m;

depth of the dynamic level of groundwater in water-reducing wells, m Then, a regulated water outflow is made through the gate valves 12 into the drainage system 15 of the underground excavation and a depression zone is formed with / simultaneous installation and torpedoing in the interval of the settler 3, filters 4, wellbore, fractured 7 and aquifers 6, Well 1 pre-filled with pressurized fluid.

In the zone of filters 4, torpedoes are detonated from detonating cord 16, and in sump 3 - torpedo 17 with a large explosive charge. 5 During torpedoing, part of the dynamic energy of the explosive is channeled through channels 14 to the depression - to rising wells 9, and thus establish a more complete hydraulic connection with scetm aquifers (Fig, 3). Underground water from all overlying aquifers opened by the descending water-lowering well 1, through hydraulic channels 14 messages (including gravel bed 5) under natural pressure intensively flows into inclined 1-rising drainage wells 9, which in turn drain the underlying aquifers, and then it is directed by gravity through the valve 12, the outlet 13 into the existing drainage system 15 of the mine working 8,

0

five

0

five

F

formula of invention

Method drained fields vklyuchakitsy drilling downlink dewatering and obliquely-rising drainage wells from mining equipment dewatering ekspluatatsionn1 wells) 1mi columns to a sump at the bottom and the filters in the water receiving portion torpedoing a borehole, forming a drainage system, the selection of groundwater from the dewatering wells surface, and from drainage wells to underground mountain vl. 31330311

processing and formation of a depression zone, characterized in that, in order to reduce the cost of drainage, increase the reliability and service life of the water-producing wells, the drilling of inclined-rising wells is carried out in the direction of the bottom, bottom and bottom; the water intake part of the water-lowering wells, after which the hydraulic channels are formed between

these wells inject the cleaning agent into the inclined wells, then produce water through the inclined wells, and after the formation of the depression zone the aquifers are torpedoed, and the groundwater is withdrawn from the downhole wells.

JO

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Editor N.Gorvat

Make up V.Cherkashenin

Tehred L. Serdyukova Proofreader M. Pojo

Order 3559/35 Circulation 45A Subscription

VNISh of the USSR State Committee for Inventions and Discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

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

Claims (1)

Claim The method of draining the field, including the drilling of descending water-reducing and oblique-rising drainage wells from mine workings, the equipment of water-reducing wells with production columns with a sump at the bottom and filters in the Sub-reception part, torpedoing of wells, the formation of a drainage system, the extraction of groundwater from water-reducing wells to the surface, and from drainage wells to underground mining and the formation of a depression zone, characterized in that, in order to reduce drainage costs, increase over of the life and service life of water-sinking wells, drilling of directional-ascending wells is carried out in the directions of the bottom, filter and: water receiving part of water-reducing wells, after which hydraulic channels are formed between these wells by injection under pressure of the treatment agent into the directional wells, then water is released through the directional wells ascending wells, and after the formation of the depressive zone, aquifers torpedo, and the extraction of groundwater from descending wells is carried out about ₁₀ through inclined-ascending other wells. A-A fie. 2 1,330,316