Method of performing ascending workings for transporting mineral product

FIELD: mining.

SUBSTANCE: invention refers to mineral resource industry and can be applied when developing ore and non-metal minefields for transporting mineral product under influence of proper weight. Method involves boring of a pilot well till design length is achieved by means of a forward travel reaming bit. After that, it is removed and on the free splined shaft there assembled is a reverse travel reaming bit which consists of telescopic cross-pieces and a centering guide. Then, the pilot well is enlarged with reverse travel till the required shape of "flattened cone" is obtained.

EFFECT: excluding rat-holing of the ascending workings, decreasing energy consumption when crushing mined rock, and creating safe working conditions.

2 dwg

 

The invention relates to the mining industry and can be used in the development of metallic and non-metallic deposits for transportation of minerals under their own weight.

There is a method of testing a steep seam stripes on the fall with the notch of coal under a shield overlap (Apelike, the technology of mining. - M.: Nedra, 1985, s-221), where the broken coal by gravity down the furnaces on the haulage drift.

The disadvantages of this method of transportation of rock mass are: frequent suboceana rising workings, resulting in lower productivity; create hazardous conditions when razuchivanii of Glasunov.

With the transition of mining operations in the lower horizons and deteriorating geological conditions implemented the drilling method of the rising excavations (Aiero, Gun, Pvegeared, Genario, mechanization of preparatory workings. - M.: Nedra, 1988, 164-169). This method is characterized by significant cost of the expansion of the borehole to the desired diameter.

The closest technical solution adopted for the prototype, is a method of drilling for coal and rock using a disk extender (A.S. USSR № 723115, MKI IS 9/00. Guide lantern drill rod / Naalin, Appcelerator and others - is Avelino 02.01.74. Published 25.03.80, bull. No. 11).

Along with the existing advantages to reduce energy consumption this method has the disadvantage that there is no possibility of changing the diameter of the hole during operation of the extender.

The objective of the invention is to eliminate the above disadvantages of the prototype, and thus the creation of such a way of conducting itself workings, which would eliminate saucepan rising generation; reduce energy intensity in the destruction of the rock mass; to create safe working conditions.

The invention consists in that in the method of holding itself workings for the transportation of minerals, including advanced well and the bit-reverse, mounted on a splined shaft with a guiding lantern, first Buryat advanced well to the design length with extender forward progress, then it is removed and freed splined shaft gather extender reverse, consisting of a telescopic crossbars and guide light, then advanced well extend backward to the desired form of a truncated cone.

Thus, with the expansion of advanced borehole rock cutting tool gradually extends to the borehole wall, with built-in jacks providing what I drilling of production of a particular form.

The form of development "truncated cone" excludes saucepan and reduces the intensity at fracture rock mass.

The comparison of the proposed solutions to the prototype and similar technological solutions are known and the existing level of engineering and technology has allowed to establish its compliance with the patentability criteria of "Novelty and inventive step.

The invention is illustrated by drawings. Figure 1 presents a diagram illustrating the sequence of drilling and drilling wells for the transportation of minerals. Figure 2 - extender reverse with a sliding canopy and rock cutting tool.

The way of conducting itself excavations for transportation of minerals is carried out as follows.

At the beginning of the production haulage 1 and vent 2 horizons from the bottom up using the drilling machine 3 slipping between a good well 4. Then in formulation 2 with splined shaft 5 is removed extender forward stroke and installed the extender reverse 6. Thanks to the retractable anchor shoes 7 lamp 8 and Porogaramu instrument 9 extender reverse 6 is advanced drilling wells 4 to produce the desired form of a truncated cone 10. Extension support Bashmakov is carried out jacks 11, mounted in bearings 12. Cross members 13 of the expander 6 is made telescopic, with the possibility of extension rock cutting tool 9 in the process of drilling with the Jack 14.

The application of the above-described method of conducting itself workings in underground development ore and non-metallic deposits ensures safe operation and reduces the cost of preparatory workings.

The way of conducting itself workings for the transportation of minerals, including advanced well and the bit-reverse, mounted on a splined shaft with a guiding lantern, characterized in that the first Buryat advanced well to the design length with extender forward progress, then it is removed and freed splined shaft gather extender reverse, consisting of a telescopic crossbars and guide light, then advanced well extend backward to the desired form of a truncated cone.



 

Same patents:

Ore chute gate // 2354600

FIELD: mechanics.

SUBSTANCE: ore chute gate comprises two bottoms attached onto cranks and arranged below the outlet hole to turn in a vertical plane in opposite directions relative to horizontal axles. The latter are fitted outside the branch pipe vertical walls and in parallel to them. Aforesaid cranks are linked up by other two cranks with their free ends linked with the rods of power cylinders arranged horizontally. The latter have are furnished with two rods to turn the cranks of aforesaid linkage in different sides. The cranks of bottoms, in initial position and with the gate opened, are oriented horizontally, while the cranks of the above linkage with the branch pipe walls form a 45 degrees angle. There is a dual-slope baffle arranged inside the branch pipe at the level of axles and in parallel to them to overlap the end face edges of bottoms, in plan, with the gate closed. Every bottom's crank has two pins fixed in cantilever therewith to enter, unobstructed, the openings of counter balance that rests upon the bottom's crank via detachable sleeves fitted on the pins.

EFFECT: higher reliability of gate operation.

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FIELD: mining.

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2 cl, 1 dwg

FIELD: mining; transporting.

SUBSTANCE: chain gate for ore chute consists of two rings assembled under discharge opening one above another and oriented in horizontal planes. The rings are tied between them with vertically oriented round-link chains secured on the rings with their ends and arranged along the whole perimeter of rings. The upper ring is stationary fastened under the discharge opening, while the lower ring is kinematically connected with a drive and is designed to turn in horizontal plane. The lower ring is equipped with rollers arranged around the exterior perimeter of the ring at uniform distances; the rollers are designed to rotate around vertical axes and interact with interior surface of a vertically oriented case of cylinder shape; the case envelopes chains with a gap. The case is secured on a stationary foundation. The lower ring from the lower side is made in form of a rim, in the groove of which a steel wire cable is inserted; the cable with its one end is secured on the rim, while with its another end it is tied with a drum, which is kinematically connected to the drive equipped with a breaking facility. In the initial position, when the gate is open, the cable envelopes the rim along the whole length of its circumference, while a slack from the rim strand of the cable envelopes a deflecting unit from below; the deflecting unit can rotate around its axis equipped with sliders; the sliders are designed to be set off in vertical guides and are equipped with a counterweight; in its initial position the counterweight is placed on the foundation. The axis of the drum is assembled so that it exceeds the lower ring at a value bigger, than vertical displacement of the lower ring, when the discharge opening of ore chute is shut; the distance in horizontal plane of the axis of the drum from the axis of the deflecting unit is chosen from the condition of approximate equality of resultant force of tension of tight and slack strands of the cable enveloping the deflecting unit for the lower ring in the initial position and after its displacement upward at closing the discharge opening with curled chains. The case is made with a vertical slot wherein the cable slack from the rim of the lower block can be inserted with a gap; the height of the slot is accepted not less, than the travel of vertical displacement of the lower ring.

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Ore chute gate. // 2347911

FIELD: mining..

SUBSTANCE: invention refers to auxiliary transport equipment, particularly to gates and is designed mainly for shutting off outlet apertures of ore chutes in mines; it can be also implemented for outlet of lump loads from hoppers. The ore chute gate contains two cylinder bottoms installed under an outlet port secured on two cranks; the said bottoms are designed to rotate in vertical plane into opposite directions against horizontal axes. The axes are located on outer sides of vertical walls of a sleeve and parallel to them. The cylinder bottoms of cranks are arranged overhung with the length of arc corresponding to right angle; free ends of bottoms are directed inside the sleeve. Kinematical connection between cranks is made in form of additional cranks secured on axes. Free ends of cranks are connected with rods of two double-piston-rod actuating cylinders oriented horizontally and assembled with gaps relative to two other walls of the sleeve. In their initial position at an open gate the cranks are oriented horizontally, while the additional cranks form the angle of 45 degrees with the walls of the sleeve; the additional cranks are designed to interact after turn into the direction of the sleeve at the angle of 90 degrees with stops secured on the sleeve. A shield with two sloping surfaces is installed inside the sleeve at the level of axes and parallel to them; the said shield overlaps the end flanges of the cylinder bottoms in plane when the gate is closed and is oriented along the axis of sleeve symmetry. Free ends of the shield are arranged in slots of the side walls of the sleeve and are designed to set off the shield in vertical and horizontal planes. The shield is spring loaded towards brackets of the sleeve by means of a compression spring. At the ends of the shield there are installed unbalance vibrators; their axes are parallel to a lengthwise axis of the shield. Dimensions of the gate are chosen considering the following ratio R=0.5B+a, r<0.355[0.5(B-b)+a-c], where R is radius of the crank, m, r is radius of additional crank, m, B is the width of the outlet port of the sleeve, m, a is the distance between the axis and inside surface of the sleeve wall, m, b is total distance between piston rods and piston rods and end walls of the actuating cylinder for final positions of the piston rods, m, c is the height of the piston rod of the actuating cylinder, m. A replaceable component out of wear and shock resistant material is installed on top of the shield with two sloping surfaces.

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FIELD: mining, particularly devices to draw and deliver particulate materials (crushed rock) from ore passes in underground mining.

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The ore passes // 2221147
The invention relates to the mining industry and is intended for use in open development mainly ore deposits and mining dumps

FIELD: mining engineering.

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5 dwg

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Blade reamer // 2345209

FIELD: oil and gas industry.

SUBSTANCE: invention refers to drilling. It can be used for borehole or gas well calibration. The blade reamer consists of integral body with attaching tool-joint threads, and slave unit including four blades and sludge-discharge notches between the blades. Hard-alloy inserts are fixed in the blades. The body is integral with the blades. Along blades there are provided dovetail grooves. They contain preloaded, though reciprocating when fixed in grooves, set of profiled spring-elastic segments with trapezoidal cross-section. Lateral faces of the segments have shaped through-holes formed symmetrically by both sides from trapeze base. Upper part of the segment is provided with V-shaped conic grooves. The segment contains at least three circular cylinder hard-alloy inserts. Shaped through-hole in the segment is generated with: trapeze base and scallops of various circle radiuses. Hard-alloy inserts are mounted on trapeze base in the segment and snugly embraced with scallops in the shaped hole, soldered in the segments and blade grooves to working surface of the blade. Besides hard-alloy inserts, working surface of the blades is provided with antifriction coating flush with hard-alloy inserts.

EFFECT: higher performance, extended application, enhanced calibration and higher development rate.

8 dwg

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