SU1339248A1 - Method of recovering materials from thick underground formations - Google Patents

Abstract

The invention relates to mining and geology, can be used in the well of hydro-mining of mineral resources and in the testing of productive horizons. The goal is to increase the extraction efficiency by improving the hydrotransport conditions of the rock mass while simultaneously separating the latter into size classes during the mining process, as well as improving the stability of the excavation chamber and reducing the loss of mineral resources. In order to carry out the method, the production formation is opened with a jetting unit to the lower level of the well. The erosion of the formation array is carried out in ascending order by layers with rock collapsing into the developed space and their issuance to the surface. After each layer has been worked out, its developed space is filled with foaming plastic. At the same time, the rocks of the overlying layer are eroded, keeping the bottom shape in the form of a truncated cone, facing down with a large base. In the process of erosion, part of the eroded plastic is discharged together with the fine fraction of the rocks to the surface through the annulus. Another part is diverted through the slurry tower of the downhole assembly. 1 hp f-ly, 3 ill. i (L

Description

ll inripc (MIIS igios.tgi to T priomu; t. |. 1y and G1 1) .P1) Gii and be used gg.CFULLO with G-KN; GGII1 (M1 G11DrOdB 1ES

1st, hatching1 to ghk plyems, and tpkzh (. With ripii; oproGmtzapii;, pctnTnnniiix horizons. Llo.ni, and ich echots - higher level) C KTiiHHnf; TH etc.pac.t. .1,1 in the case of single-pruning division of the latter into: tassi according to size and design of testing, as well as an increase in the ymeToi huitioCTM camera and a reduction in losses of the flight component.

FIG. 1 - 3 P 1 steps, 1 cxeMiii, illustrating the sequence of operations with. on with about and.

11.g1.uktichuchu about the formation of the d, about the bottom (vrNscTKH and the bottom of the well- Hoi i 1. The development of the mastipa of the formypia proves water and r the help of the rumbler of the rhome1 of the ai peivrra 2, from h o p columns with TCMiecKoini 1о1-; named after X tonic tonic h. Pressure; olon per 1 lb; - |: ena. to dl for acchcha 11or (-1, .4 hv 1G beef. - hydro ‑ lever with npnoMHiifi k.h -. im) oG1 and nozzle d.p rachg- -.; -:; of a plastic installed under the ADT; admission chamber | end of shank A with,; c of a roller cone, nozzle for rocks, naKJUMiena down, and nozzle d, l rachmyia PJIast lc; cy — upward Blur P (M5 (1L. prev. out; t t in ascending toke with up to 5 by rotating. ha 2, while after working down .tsog (1 (Another layer, for example, the bottom-hr; hl1; ch-11 sec. hlo 6, its B1.1 } I’m filling up with foaming | tseG | with pl, -i: t1- Lssg) T | 7. Filling in the view and from l and Hot on plastics G - ozhn; - npoMTisorim I, as ni: in ins. celia l r.-iTi.:-:, t ri; and when PP is located er, t in the combination with absorbing,)) iM: -; mustache G) (i i, oiiviMvlemg-; l well on the hose ah.

1.Following, for n. (Plastics 7, in the coal industry, plastics can use ISM1, urethl HI-J, n 1ttlas G b, rez o foams, poroplas n- i: etc., By; n; This SI vrl: 1ln1mglnG) by Junna 3 begins yuch rl. , 1ьп | .i / gg, (l 1g-l1ilozhal tseg about s.lo in pos.,., for scheduling accounts on the p-position, :: i) 3 post DHH IO IKX. g | .adiiii - ji 1L | de-vce itMiiioro co ;; y: .m, o rL L14 .1; about G p.lchi; Essen. a - ng (- 1;.

(1 ;; Н1.: М 1 -.чно с тги -; зл мед-. Very gimpgchl.; Chraml;; - l BI sc h iik l

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 | carry out the size, 1c plastic 7 with nsk to nn under, holding the shape of an artificial luniina 10n form of a truncated cone, reversed bol1) sew the base-) H1 (m upwards, due to the inclined distance the bottoms are based on the condition of the Biii i:) effective on the gravity hydrothermal TopaticnopTa crashing on the bottom 10 of the rock to the HC of the pulp lifting COLUMN, for example, 15-40 degrees.

When the plastic 7 is eroded, it is fractionated, which is intensified by the overburden, and at the same time, the overburden with the stream emanating from the nozzle of the shank 4 and used for the erosion of the plastic 7 disintegrates. It is extremely efficient and at no cost cyiiiecTBeHFibK.

Since the foaming plastic mass fractions have positive buoyancy, part of the fractions floats towards the crushed rock and within the clearing space a peculiar fluidized bed is formed of the rock fractions and plastic fractions. The same process takes place directly at the bottom 10. Due to this, the rock is additionally disintegrated into size classes, and small fractions are carried out by fluid flows together with part of the plastic-mass fractions 1 in the annulus using the direct washing method. Due to the positive buoyancy of the plastics fractions, the process of hydraulic lifting is constricting, and requires less energy.

Another part of the plastic fractions is entrained by a crusty rock mass to the suction of the hydraulic elevator and spreads to the surface, while here the conditions for lifting are improved due to the positive buoyancy of the plastic fractions. Especially this effect is noticeable with a large depth of mining.

In order to facilitate the access of rock and plastic fractions to the annulus, face 9 is given the specified feed, while the opening angle of the bottom cone is taken within l2 () - 1hO degrees. Accept angles MfHi.iiie yes and lx values not recommended0

five

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five

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55

The force of willow is the condition that the rocks are measured by the jet.

Thus, the rocks and plastics are washed down in different directions, with separate removal of rocks of various classes from the excavation chamber, which can significantly simplify the process of enrichment. On the surface, the plastic fraction is easily separated from the rock due to the positive buoyancy of the plastic.

After mining the underlying layer, both layers 6 and 8 are filled with foaming plastic, and then proceed to mining layer 5 above layer 8, and all of the above operations are repeated, with the layer 5 eroded in an ascending order, and washing out plastics in layer 8 are made downwards.

Filling the worked-out space of the excavation chamber with plastic ensures a steady state of the walls of the chamber, both in the process of working out and in the subsequent.

At the same time, the loss of the useful component in the chamber is eliminated, since the angle of the artificial bottom 10 is selected from the conditions for ensuring efficient gravity hydrotransport, as well as due to the TONry that the plastic is being washed out, on the surface of which pieces of rock could accumulate.

To ensure an optimal effect, it is advisable to erode rocks and plastics with jets located in the same vertical plane. In this case, the most effective mixing of rock and plastic fractions is provided, and the process of disintegration of the collapsing rock of the nile stream is intensified.

Claims (2)

1. A method for extracting materials from powerful subterranean formations, including opening the formation with a well, locating a fracture jetting unit therein, and washing out the formation array in ascending order 0 layers with rock collapse in Bt, ipa6o tant space and their issuance to the surface, characterized in that, in order to replace the extraction efficiency by improving 5 conditions of hydrotransport of the rock mass with simultaneous separation of the latter into classes by size in the process of mining, as well as increasing the stability of the excavation chamber and reducing 0 loss of the useful component, after each underlying layer has been processed, its eel space is filled with foaming plastic, then it is simultaneously washed out 5 rocks of the overlying layer are in ascending order with keeping the shape of the slab in the form of a truncated cone, turned down with a large base, and the erosion of the plastic within the underlying The 0 layer is in the descending order with the shape of the flank conical shape turned upwards with a large base, while in the process of erasing one part of the eroded plastic is withdrawn together with the fine fraction of rocks to the surface through the annulus together with a large fraction of rocks - along the pulp-lifting column of the aggregate. five 0 45 2. The method of claim 1, wherein the washing of the rocks and plastics is effected by jets arranged in the same vertical plane. 1 3