CN202881775U

CN202881775U - Counter-arc shape sleeper for managing roadway heaving floor

Info

Publication number: CN202881775U
Application number: CN 201220518121
Authority: CN
Inventors: 张志义; 师旭; 史英男
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-09-24
Filing date: 2012-09-24
Publication date: 2013-04-17
Anticipated expiration: 2022-09-24

Abstract

The utility model relates to a counter-arc shape sleeper for managing a roadway heaving floor. The counter-arc shape sleeper for managing the roadway heaving floor comprises a sleeper body, anchor rod eye holes, steps, rebar and rails. The counter-arc shape sleeper for managing the roadway heaving floor is provided with the arc shape sleeper body arching downwards. The anchor rod eye holes are symmetrically formed in two ends of the sleeper body. The middle portion of the sleeper body is a counter-arc shape body. The steps are symmetrically arranged on the counter-arc shape body of the middle portion of the sleeper body. The rails are arranged on the steps. A pre-tension force rebar is arranged inside the sleeper body which is poured by concrete. The width and the thickness of the sleeper body are determined by a roadway. When the counter-arc shape sleeper for managing the roadway heaving floor is used, a groove identical with the arc diameter of the sleeper body is dug in a corresponding base plate sandstone surface below the rails along the direction of the rails, the sleeper is placed on the groove, and anchor rods are used for penetrating through the anchor rod eye holes and fixing the sleeper body on the surface of the groove in an anchoring mode. The flexural performance is good, rigidity is high, construction is simple and convenient, late revision of the roadway is avoided, long-term stability of the roadway is effectively maintained, mine safe and high-efficient production is promoted, and economic benefit is good.

Description

A kind of counter-arch shaped sleeper of administering Floor Heave in Roadway

Technical field

The utility model relates to a kind of antiarch sleeper of administering Floor Heave in Roadway, especially is applicable to a kind of counter-arch shaped sleeper of administering Floor Heave in Roadway that the mine working pucking is administered.

Background technology

Continuous increase along with the coal mining degree of depth, the supporting difficulty of deep-well dynamic pressure soft-rock tunnel significantly increases, and pucking is the most important thing of this type of roadway support, general Floor Heave in Roadway amount accounts for 70～80% of roof to floor convergence, because the difficulty of base plate supporting is larger, present most of roadway floor is very little without constraint or constraint, cause many tunnels at first to begin to destroy from base plate, it is serious to show as Floor Heave in Roadway, sometimes the Floor Heave in Roadway amount reaches 1.5～2.0m, repeatedly cause base plate extremely broken behind the planted agent, two help also to destroy with base plate thereupon, and the maintenance in tunnel is difficulty especially.Coal mine roadway pucking improvement technology mainly contains the U-shaped steel antiarch of base plate, base plate anchor pole, floor grouting, artificial planted agent at present.The U-shaped steel antiarch of base plate supporting intensity is high, can form strong constraint to Floor Heave in Roadway, but its construction intensity is large, and speed of application is slow, and construction cost is high, generally is only applicable to the geologic anomaly zone of fracture or in the very important tunnel of mine; Floor bolting can form certain constraint to floor rock, increases its mechanics parameter, improves its force-bearing situation, but this supporting prestressing force restriction range is limited, is difficult to form the integer support structure, and causes difficulty for later stage planted agent; Floor grouting can be whole with broken base plate again cementing one-tenth, and improving physics is parameter, improved the ability of base plate opposing pucking, but because the floor grouting hole drill advances difficulty, and the slip casting range of scatter is limited, so its improvement pucking effect is undesirable; Artificial planted agent is the method for the normal improvement pucking that uses of present mine, can repeatedly administer pucking, simple to operate, constructability, but the floor rock after repeatedly acting as a planted agent is unusually broken, be more prone to failure, and the workman's that manually acts as a planted agent labour intensity is very large, speed of application is slower, affects the normal use in tunnel.Coal mine roadway is scrapped from beginning to tunnel the later stage, all undertaking the vital tasks such as transportation, ventilation, the long-term stability of safeguarding the tunnel is that mine is efficient, the prerequisite of safety in production, particularly want the effective support tunnel at the pick lane initial stage, avoid the later stage repeatedly the tunnel to be overhauled, cause the roadway maintenance expense to be far longer than the tunnelling expense.

The utility model content

The deficiency that exists in order to overcome existing coal mine roadway pucking improvement technology, the utility model provides a kind of antiarch sleeper of administering Floor Heave in Roadway, anti-bending strength is good, rigidity is large, easy construction avoids the tunnel later stage to overhaul, and effectively safeguards the long-term stability in tunnel, promote the mine safety High-efficient Production, good in economic efficiency.

The technical scheme that its technical problem that solves the utility model adopts is: the antiarch sleeper of this improvement Floor Heave in Roadway comprises sleeper body, anchor pole eyelet, step, reinforcing bar and rail; The antiarch sleeper of this improvement Floor Heave in Roadway is provided with the arch sleeper body of downward camber arch, the sleeper body two ends are arranged with the anchor pole eyelet, the middle part of sleeper body is the antiarch body, the antiarch body partly is arranged with step in the middle of sleeper body, rail is installed on the step, be laid with the pretension reinforcing bar in the sleeper body, and use concreting, width and the thickness of sleeper body are determined by the tunnel.During use, the groove identical with sleeper body arch footpath dug along the rail direction in corresponding floor sandstone surface below rail first, and sleeper is placed on the groove, passes the anchor pole eyelet with anchor pole sleeper body is anchored at groove surfaces.

The beneficial effects of the utility model are: compare with common straight sleeper, upwards bending rigidity improves 50%; Increased the restriction range of anchor pole to the country rock surface, made floor rocks recover in a big way three-dimensional stress state; The sleeper that moves towards along the tunnel to arrange is joined together by the rail that is fixed in the above, and forms integral body constraint to roadway floor moving towards direction; The power that pucking makes progress is delivered to the both sides anchor pole by sleeper, and then is delivered to floor sandstone, reaches the basic control to pucking; Easy construction avoids the tunnel later stage to overhaul, and effectively safeguards the long-term stability of roadway floor, and administering for the pucking of deep-well dynamic pressure soft-rock tunnel provides new solution.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is structural representation of the present utility model.

1. sleeper bodies among the figure, 2. anchor pole eyelet, 3. step, 4. reinforcing bar, 5. rail, 6. tunnel, 7. anchor pole, 8. floor sandstone.

The specific embodiment

In the drawings, the antiarch sleeper of this improvement Floor Heave in Roadway comprises sleeper body 1, anchor pole eyelet 2, step 3, reinforcing bar 4 and rail 5; The antiarch sleeper of this improvement Floor Heave in Roadway is provided with the arch sleeper body 1 of downward camber arch, sleeper body 1 two ends are arranged with anchor pole eyelet 2, the middle part of sleeper body 1 is the antiarch body, the antiarch body partly is arranged with step 3 in the middle of sleeper body 1, rail 5 is installed on the step 3, be laid with pretension reinforcing bar 4 in the sleeper body 1, and use concreting, the width of sleeper body 1 and thickness are determined by tunnel 6.During use, the groove identical with sleeper body 1 arch footpath dug along rail 5 directions in corresponding floor sandstone 8 surfaces below rail 5 first, and sleeper is placed on the groove, passes anchor pole eyelet 2 with anchor pole 7 sleeper body 1 is anchored at groove surfaces.

Claims

1. a counter-arch shaped sleeper of administering Floor Heave in Roadway comprises sleeper body (1), anchor pole eyelet (2) and step (3); It is characterized in that: the antiarch sleeper of this improvement Floor Heave in Roadway is provided with the arch sleeper body (1) of downward camber arch, sleeper body (1) two ends are arranged with anchor pole eyelet (2), the middle part of sleeper body (1) is the antiarch body, and the antiarch body partly is arranged with step (3) in the middle of sleeper body (1).

2. a kind of antiarch rail type pillow of administering Floor Heave in Roadway according to claim 1 is characterized in that: rail (5) is installed on the step (3).

3. a kind of counter-arch shaped sleeper of administering Floor Heave in Roadway according to claim 1, it is characterized in that: be laid with pretension reinforcing bar (4) in the sleeper body (1), and use concreting, the width of sleeper body (1) and thickness are determined by tunnel (6).