CN210370780U

CN210370780U - Swift current well forehead wall bushing plate

Info

Publication number: CN210370780U
Application number: CN201920835482.0U
Authority: CN
Inventors: 刘琳; 常建宁
Original assignee: Gansu Jiu Steel Group Hongxing Iron and Steel Co Ltd
Current assignee: Gansu Jiu Steel Group Hongxing Iron and Steel Co Ltd
Priority date: 2019-06-04
Filing date: 2019-06-04
Publication date: 2020-04-21
Anticipated expiration: 2029-06-04

Abstract

The utility model discloses a swift current well volume wall welt belongs to underground mine roadway engineering field, has solved the poor problem of current volume wall welt protective capacities. The utility model discloses a be located the lateral wall welt of volume wall lateral wall and be located the bottom welt of volume wall bottom, lateral wall welt and bottom welt cast L shape wholly, are equipped with reinforcing apparatus in the lateral wall welt bottom outside. The utility model discloses "melt" as an organic whole with lateral wall welt and bottom welt, cast into the whole welt of L shape, promote holistic stability and impact resistance, intensity very increases, has prolonged volume wall life, has reduced the volume wall and has damaged the influence to production.

Description

Swift current well forehead wall bushing plate

Technical Field

The utility model belongs to underground mine roadway engineering field, concretely relates to swift current well volume wall welt.

Background

Two welts of current swift current well forehead wall lower extreme are relatively independent, receive the impact that the bold ore rolls the whereabouts at the platen, drop easily, lose the guard action to the forehead wall, lead to the forehead wall in the short-term damage serious and the maintenance of stopping production. The forehead wall overhaul is influenced by lower underground temperature and longer concrete curing period, generally needs 30 days, and has great influence on normal ore drawing of the ore pass. The maintenance of the frontal wall belongs to limited space operation, the safe operation condition is relatively poor, and more unsafe factors exist.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an ore pass volume wall welt to solve the poor problem of current volume wall welt protective capacities.

The technical scheme of the utility model is that: the utility model provides a swift current well volume wall welt, is including the lateral wall welt that is located the volume wall lateral wall and the bottom welt that is located the volume wall bottom, and lateral wall welt and bottom welt cast into L shape wholly, are equipped with reinforcing apparatus in lateral wall welt bottom outside.

As a further improvement, the reinforcing device is a round tube, which is arranged along the bottom edge of the side wall lining plate and welded on the side wall lining plate.

As a further improvement of the utility model, the inside of the round pipe is filled with concrete mortar to increase the strength of the round pipe.

As a further improvement, the lateral wall lining plate and the bottom lining plate are connected with the forehead wall through anchor bolts.

As a further improvement of the utility model, the lateral wall lining plate and the bottom lining plate are integrally cast by manganese steel.

As a further improvement of the utility model, the side wall lining plate and the bottom lining plate are integrally cast by manganese steel with the brand number ZGMn 13.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model integrates the side wall lining plate and the bottom lining plate into a whole, and casts the L-shaped integral lining plate, thereby improving the stability and the impact resistance of the whole body, greatly increasing the strength, prolonging the service life of the forehead wall and reducing the influence of the damage of the forehead wall on the production;

2. the right-angled part at the lower end of the L-shaped lining plate is a concentrated part impacted by ores, a reinforcing device is additionally arranged at the part to play double roles of buffering and protecting the forehead wall lining plate, the reinforcing device adopts a circular tube, the buffering performance is stronger, the circular tube is easy to replace after being worn, the workload is small, and the cost is low;

3. the side wall lining plate and the bottom lining plate are cast by ZGMn13 manganese steel, and the ZGMn13 manganese steel is high-strength high-manganese steel, wherein the content of Mn is 13%, and the impact resistance, the abrasion resistance and the extrusion resistance are strong.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a right side view of FIG. 1;

fig. 3 is a usage state diagram of the present invention.

In the figure, 1-sidewall liner; 2-bottom lining plate; 3-round tube; 4-forehead wall; 5, anchor bolts; 6-vibrating the table plate.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.

As shown in figures 1 and 2, the orepass forehead wall lining plate comprises a side wall lining plate 1 located on the side wall of a forehead wall 4 and a bottom lining plate 2 located at the bottom of the forehead wall 4, wherein the side wall lining plate 1 and the bottom lining plate 2 are cast into an L-shaped whole, and a reinforcing device is arranged on the outer side of the bottom of the side wall lining plate 1.

The reinforcing device is a circular tube 3, the circular tube 3 is arranged along the bottom edge of the side wall lining plate 1, and the circular tube 3 is welded on the side wall lining plate 1. Concrete mortar is poured into the circular tube 3.

The side wall lining plate 1 and the bottom lining plate 2 are both connected with a frontal wall 4 through anchor bolts 5.

The side wall lining plate 1 and the bottom lining plate 2 are integrally cast by manganese steel. The side wall lining plate 1 and the bottom lining plate 2 are integrally cast by manganese steel with the trade mark ZGMn 13.

As shown in fig. 3, when the ore rolls off the vibrating platen 6, most of the ore impacts the circular tube 3, and the circular tube 3 protects the additional wall lining. And the forehead wall lining plate is an L-shaped whole, and the abrasion resistance of the right-angle part of the forehead wall lining plate is greatly enhanced.

Examples 1,

The 3# loop frontal wall of the horizontal 2# chute of the 3400m black trench mining area is seriously damaged, so that normal ore drawing cannot be performed, and the frontal wall needs to be poured again.

The additional wall 4 is cast by C30 concrete, two layers of reinforcing steel bar nets with the diameter of phi 22 and the mesh length of 200mm are arranged in the wall, the reinforcing steel bar nets are connected in a welding mode and must be welded with exposed reinforcing steel bars in the original concrete, and the lap joint length is not less than 500 mm. The thickness of the concrete poured on the frontal wall 4 is not less than 610 mm. Adopt now the utility model discloses maintain and consolidate. The side wall lining plate 1 and the bottom lining plate 2 of the L-shaped lining plate are integrally arranged on the side wall and the bottom of the frontal wall 4, and the material is ZGMn13 high manganese steel with the thickness of 90 mm. The height h of the side wall lining plate 1 is 800mm, and the length l of the bottom lining plate 2 is 700 mm. Lateral wall welt 1 and bottom welt 2 all are connected with volume wall 4 through the crab-bolt, along 1 base outside installation pipe 3 of lateral wall welt, the pipe adopts condemned rotary drill drilling rod, and the one hand is waste utilization, and on the other hand, the wall thickness of drilling rod is thicker, and is more firm wear-resisting. Before use, concrete mortar is used for pouring, and the strength of the drill rod is enhanced.

The maintenance period before improvement of the extra wall lining plate of the ore pass is counted to be 18 months, the ore discharge amount of one side of the ore pass is about 200 ten thousand tons, the maintenance cost of each time is about 46.5 ten thousand yuan, the unit cost =46.5 ten thousand yuan/200 ten thousand ton =0.23 yuan/ton, and the maintenance unit cost is higher.

Black ditch 2# drop shaft 3# loop line is from adopting the utility model discloses maintain to date and have run safely 40 months, conservative prediction reuses 24 months and does not have the problem, and prediction life will reach 64 months, and 2# drop shaft total ore discharge = annual plan 437 ten thousand tons/12 months x 64 months =2331 ten thousand tons, cost of maintenance =46.5 ten thousand yuan/2331 ten thousand tons =0.02 yuan/ton.

The frontal wall maintenance cost is calculated as follows: the cost of the maintenance unit is reduced and is =0.23 yuan/ton-0.02 yuan/ton =0.21 yuan/ton, and the maintenance cost is saved and is =0.21 yuan/ton multiplied by 2331 ten thousand ton =489.5 ten thousand yuan.

Through utilizing the utility model discloses, limited space operation number of times has been reduced in an overhaul period, has reduced the probability that the incident takes place.

Claims

1. The utility model provides a drop shaft volume wall welt, is including the lateral wall welt that is located the volume wall lateral wall and the bottom welt that is located the volume wall bottom, its characterized in that: the side wall lining plate (1) and the bottom lining plate (2) are cast into an L-shaped whole, and a reinforcing device is arranged on the outer side of the bottom of the side wall lining plate (1).

2. The orepass forehead wall liner according to claim 1, wherein: the reinforcing device is a round pipe (3), the round pipe (3) is arranged along the bottom edge of the side wall lining plate (1), and the round pipe (3) is welded on the side wall lining plate (1).

3. The orepass forehead wall liner according to claim 2, wherein: concrete mortar is poured into the circular tube (3).

4. The orepass forehead wall liner according to any one of claims 1 to 3, wherein: the side wall lining plate (1) and the bottom lining plate (2) are connected with a frontal wall (4) through anchor bolts (5).

5. The orepass forehead wall liner according to claim 4, wherein: the side wall lining plate (1) and the bottom lining plate (2) are integrally cast by manganese steel.

6. The orepass forehead wall liner according to claim 5, wherein: the side wall lining plate (1) and the bottom lining plate (2) are integrally cast by manganese steel with the brand number ZGMn 13.