The method of restoring the broken ledges during operation of the quarry

 

The invention relates to the field of construction and mining and can be used to restore the broken ledges during operation of the quarry. The technical result is to reduce the complexity and cost of the recovery process broken ledges. For this purpose, the method includes Stripping slope of the ledge, drilling and concreting of piles, installation of retaining elements, pinning them against the slope of the ledge and filling the resulting space in the overburden. Moreover, drilling and concreting of piles are along the broken part of the ledge, section retaining elements installed in finished form, bringing them from one pile to the top of the berm, and rigidly secured, and after filling in the overburden plan ledge on the design width. 2 C.p. f-crystals, 4 Il.

The invention relates to the construction and mining and can be used to restore the ledges quarry during its operation.

With the collapse of part of the ledge, which transport the berm and in the limiting contour of the existing quarry at a great depth, renewal plot collars neeff the pit.

Restore the width of the disturbed areas is possible artificial berm using counterfort retaining walls or retaining structures. Known various designs of retaining walls and artificial berms, including those used in industrial and hydraulic constructions set forth in the writings: I. K., Snitko (Static and dynamic pressure of soils and calculation of retaining walls. M: Gastrolyzer, 1963, S. 109-110, 129-132), H. L. Fisenko, E. L. the Galustyan (Strengthening of slopes in open pits. M.: Nedra, 1974, S. 130-136) and “Temporary guidelines management pitwall stability of non-ferrous metallurgy” (UNIPROMED, M., 1989, S. 81-96). These designs can be divided into types:

- conthey,

- thin retaining wall with great depth in the ground,

massive retaining wall with a shallow height laying in the ground.

When the height of the ledges Conchos and massive retaining walls can not be applied because they are situated in the sloping part and will be of greater width, thin retaining wall will not provide the necessary bearing capacity due to load from the transport and it rocks.

From the above, it can be said arsenych areas of high ledges.

The closest in technical essence and the achieved result is a way to restore the collapsed slope of the ledge or part ("Temporary guidelines management pitwall stability of non-ferrous metallurgy", UNIPROMED. M., 1989, S. 94-95), including cleaning up the slope of the ledge, drilling and concreting of piles, installation of retaining elements, pinning them against the slope of the ledge and filling the resulting space in the overburden. To implement the method in the setup uprights are building a site for the machine for drilling wells. Wells are drilled on the horizontal part of the ledge (top of berm), and on the slope. In drilled wells installed anchor and concreted. Then at anchor wear pipe or drill rod of a given height and also fill them with concrete or cement mortar. Vertical posts with horizontal braces connect with sloping part weldment (lejanos) and fixed weights to the array.

The disadvantage of this method is the high complexity when the restoration of steep ledges during operation of the quarry. The construction site for the accommodation is alizirovannaya technological tools. This causes great difficulties associated with drilling, concreting of piles and fixing Liana rods to the array directly on the slope broken part of the ledge, where there is no normal access.

The aim of the invention is to reduce the complexity and cost of the recovery process broken ledges during operation of the quarry.

This objective is achieved in that in the method of restoring the broken ledges during operation of the quarry, including cleaning up the slope of the ledge, drilling and concreting of piles, installation of retaining elements, pinning them against the slope of the ledge and filling the resulting space in the overburden, drilling and concreting of piles are along the broken part of the ledge, section retaining elements installed in finished form, bringing them from one pile to the top of the berm, and rigidly secured, and after filling in the overburden plan ledge on the design width.

Moreover, drilling and concreting of piles carried out on the upper berm.

And with the availability of the lower berm bench drilling and concreting of piles carried out on the upper and lower berms.

Drilling and concreting of piles vdash funds to ensure the fastening of the retaining elements.

Install sections of spatial frames of retaining elements in finished form, bringing them from one pile to the top of the berm and rigidly fixing, can significantly reduce the recovery time of the broken part of the ledge.

Planning ledge after filling in the overburden on the design width allows you to ensure the design width of the ledge and other requirements relevant SNiP 2.05.07-9.

Drilling and concreting of piles on top of the berm is the least time consuming method of fixing piles, as it does not require the preparation of special sites for placement of the machine.

Often, when a long standing ledges, due to shedding of the berm, to disturbed areas no access and work on the restoration is only possible on the top of the berm. With the availability of the lower berm bench drilling and concreting of piles carried out on the upper and lower berms, this allows you to change the location of the holding elements and, consequently, significantly reduce the load on the structure, its intensity and implement the design on the production of metalmaterial, which also leads to reducing the complexity and the cost of Primavera recovery scheme violated the ledge.

In Fig.3 shows a diagram of the recovery of the broken ledge with the availability of the lower berm ledge.

In Fig.4 shows a diagram of the recovery of the broken part of the ledge is a top view.

An example of a specific implementation

Currently, the quarry is worked out to a depth of 615 feet Works are carried out on the land transport berm career. On the main one-lane exit for 100 meters struck the upper part 1 of the slope of the ledge, the width of the transport berm fell to 2-8 m from the project. In the result, did not meet safety standards for transportation of heavy vehicles.

According to SNiP 2.05.07-91 it is necessary to ensure the design width of the plank transport berm and prevent intensive destruction of the ledge, thereby to keep the Congress for the period of operation of the quarry.

The restoration is made using metal, attached to the upper ledge. Before the calculations, which were made following initial data: height ledge 5-19 m, the angle of 75°, length of the disturbed area of 50-100 m, a height of 2-6 m, width - 2-8 m, the load of the vehicle when hitting the front wheel 38 so

The components of the design sections were calculated outcome is ipemail overburden

Work on the restoration of the broken ledge carried out as follows.

In the beginning, conduct preparatory work: cleaning of damaged paintings transport berm mechanized transport with the use of special equipment.

Pre-assembled individual sections of the frame structure. All elements of the frame are interconnected by a seam weld. Section frame design includes the following elements (Fig.2, 3):

2 is a longitudinal beams (beams section 550×180 mm)

3 - slope of the section (the lining of the armature and mesh “netting”),

4 - tie (channel 120×54 mm)

5 is a cross beam (channel 300×100 mm)

6 - piles (2 pipe 146×5 mm per partition).

With the outer side of the section covered with rebar and mesh netting” 7.

The Congress, based on the size of each partition frame, along the disturbed area drilling of wells 8 under piles 6 at a distance of not more than 6 meters from the top edge (process requirements), depth of 2-4 meters and at a distance of 1-2 meters from one another, based on 2 piles per partition. In well establish pipes that are piles and concreted them. Concrete piles are a function of the anchors holding section.

In the end all works produce the final layout of the Congress by rolling pour breed vehicles and occiput holding shaft 10 according to SNiP 2.05.07-9. As a result of implementation of the method turns out locked design of the ledge with the restored load capacity and width.

In case of availability of the lower berm scarp and when a sufficient number of used metalmaterial (drill pipe, channel,...), from which one can make a sloping face portion 3 sections, the method implemented with the holding elements on the entire height of the ledge. On the upper and on the lower berms, based on Raney edge (process requirements), drilling of wells 8 under piles 6 depth of 2-4 meters and at a distance of 1-2 meters from one another based on 2 piles per partition. In well establish pipes that are piles and concreted them. To pile on the upper and lower berms install ready-section retaining elements. Then put them in the usual way, covered the space formed in the overburden and plan to Congress.

Claims

1. The way to restore a broken ledge during operation of the quarry, including cleaning up the slope of the ledge, drilling and concreting of piles, installation of retaining elements, pinning them against the slope of the ledge and filling the resulting space in the overburden, characterized in that the drilling and concreting of piles are along the broken part of the ledge, section retaining elements installed in finished form, bringing them from one pile to the top of the berm, and rigidly secured, and after filling in the overburden plan ledge on the design width.

2. The method according to p. 1, characterized in that the drilling and concreting of piles carried out on the upper berm.

3. The method according to p. 1, characterized in that when the availability of the lower berm scarp, BU

 

Same patents:

The invention relates to the mining industry and can be used with open placers of

The invention relates to mining, in particular to the development of quarrying, and can be used when developing zakonchennih deposits

The invention relates to the mining industry and can be used in the development of coal, ore and non-ore deposits in an open way, as well as in the construction and maintenance of embankments and dredging roads and Railways

The invention relates to the mining industry and can be used for the open development of mineral resources

The invention relates to the mining industry and can be used for open development of mineral deposits

The invention relates to the mining industry and can be used for open development of mineral deposits

The invention relates to the mining industry and can be used for open development of mineral deposits, in particular when dumping on slopes under high deformation until the collapse of the dumps from the slopes

The invention relates to the mining industry and can be used in the development of coal, metallic and nonmetallic minerals in an open way, as well as in the construction of embankments and dredging roads and Railways in unstable rocks and soils

The invention relates to mining and can be used to study the stability of embankments rocks

The invention relates to the mining industry and can be used for open development of horizontal and sloping layers of minerals
The invention relates to the field of construction, in particular the field of creation of soddy coatings and care for them, and can be used for the establishment and operation of outdoor sports soddy sites, high-quality lawn areas (tennis courts, Golf courses), ornamental lawns and soil-protective coatings slopes

The invention relates to the mining industry and can be used for open development of mineral deposits

The invention relates to hydraulic construction and can be used as shore protection structures in erodible channels of rivers, canals and other structures, flows have full of a lot of sediment

The invention relates to hydraulic construction and can be used as shore protection structures in erodible channels of rivers, canals and other structures

The invention relates to the construction and can be used for the protection of earthworks from the sandy soil from wind erosion

The invention relates to the construction and, in particular, can be used in the construction of the road base service roads, as well as for hardening and protection against erosion of soil slopes, canals, veneers and hydraulic structures

The invention relates to the construction and can be used to stabilize landslides on the slopes

The invention relates to lawn element for landscaping dicotyledonous plants

The invention relates to mining and can be used to increase the height of the embankments of earth structures and capacity dumps while maintaining the stability of these arrays

The invention relates to the construction, in particular, to the creation of barriers to movement of landslides threads

FIELD: building, particularly hydraulic structure reinforcement.

SUBSTANCE: method is performed in two-stages. The first stage involves forming vertical elongated flat ground massifs secured by hardening material. Massifs are created in crest embankment area and in upper area of embankment slope so that massifs are spaced minimal available distance from crest and pass through embankment body, including land-sliding upper embankment slope area. Massifs are anchored in mineral bottom by lower edges thereof and are arranged at least in three rows and there are at least three massifs in each row. Method for massifs forming involves driving double-slotted injectors directly in embankment ground or in wells formed in embankment and having plugged wellhead; orienting injector slots perpendicular to hydraulic pressure head vector direction in embankment area to be reinforced; injecting hardening material under increased pressure across horizons from top to bottom or in reverse direction, wherein injection is initially performed under 5-15 atm pressure and at minimal rate in each second injector of one outermost row beginning from extreme ones; feeding hardening material in previously missed injectors in this row; supplying injectors of another extreme row with hardening material in the same way; feeding hardening material to ejectors of medium rows under 10-20 atm pressure; performing the second reinforcement stage as material hardens to obtain 70% strength. The second reinforcement stage involves forming vertical elongated flat massifs of secured ground anchored in mineral bottom by lower edges thereof and arranged at least in three rows, wherein each one includes at least three massifs. Massifs extend at the angle exceeding embankment slope angle to horizontal line. Massifs are formed with the use of double-slotted injectors in remainder embankment area. Injector slots are directed perpendicular to hydraulic pressure head vector direction in embankment area to be reinforced. Hardening material is ejected in above succession, wherein hardening material pressure is equal to design process pressure enough for direction of feeding hardening material through injector slots and lesser than hardening material injection pressure of the first reinforcement stage.

EFFECT: increased reliability of structure reinforcement; prevention of land-slide on structure slopes.

3 cl, 3 dwg

Up!