CN201546729U

CN201546729U - Novel shaft lining structure at ingate position of deep coal mine well

Info

Publication number: CN201546729U
Application number: CN2009201805661U
Authority: CN
Inventors: 姚直书; 程桦; 荣传新; 宋海清; 邓昕; 王晓健; 蔡海兵
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2009-11-13
Filing date: 2009-11-13
Publication date: 2010-08-11
Anticipated expiration: 2019-11-13

Abstract

The utility model discloses a novel shaft lining structure at an ingate position of a deep coal mine well. The technical scheme includes that (1) an annular shaft lining within a range of 10m of an upper opening of an ingate of a deep coal mine well is in a concrete structure, and strength grade of concrete is SFRC50; and (2) a plurality of single-conical shape seats are arranged at a 5m position of the upper opening of the ingate on an outer wall of the annular shaft lining, lower surfaces of the seats are planar, the annular shaft lining breaks at lower surface positions of the seats to form an annular isolation seam, and water-proof asphalt is coated inside the isolation seam. An annular shaft lining concrete structure is a double ring reinforcing steel bar steel fiber reinforced concrete structure, namely, an inner reinforcing steel bar ring and an outer reinforcing steel bar ring are arranged in the concrete, and steel fibers are distributed in the concrete. Due to complex stress on the shaft lining structure at an ingate position, the concrete is not only under compression stress, but also under tensile stress and shearing strength, and the shaft lining is easier to break. Use of steel fiber reinforced concrete at the upper opening position of the ingate of the deep coal mine well to replace ordinary concrete mainly aims at increasing composite bearing capacity of tensile, shearing resistance and the like of the shaft lining and is quite favorable for shaft lining bearing capacity.

Description

A kind of novel shaft wall structure in coal mine deep well ingate place

Technical field:

The utility model relates to the colliery building field, specifically a kind of novel shaft wall structure in coal mine deep well ingate place.

Background technology:

Ingate is as pit shaft and junction, tunnel, parking lot, and its stress is very complicated.Especially for deep-well, the ingate that is under heavily stressed is subjected to repeatedly to construct disturbance, and stress is concentrated serious, and surrouding rock stress often surpasses rock mass strength, causes ingate place wall rock destabilization, causes ingate and top shaft wall structure to destroy, and jeopardizes mine safety.

The utility model content:

For solving the problem that prior art exists, prevent that the country rock generation large deformation of ingate place from causing shaft lining breakage, the utility model proposes: in the upper and lower 10m scope in ingate place, adopt new construction and new material to add strong supporting to the borehole wall.

The scheme that the utility model adopts is:

A kind of novel shaft wall structure in coal mine deep well ingate place:

(1), the annular borehole wall in coal mine deep well ingate 10m scope suitable for reading adopts concrete structure, strength grade of concrete is SFRC50;

(2), in ingate 5m suitable for reading position, the outer wall of the annular borehole wall is provided with several single conical wall seats, wall seat soffit is the plane, the annular borehole wall is positioned at wall seat soffit place and disconnects, and forms the annular isolation seam, isolates in the seam and smears water proofing asphalt.

Described annular borehole wall concrete structure is two circle steel fiber reinforced concrete structures, promptly adopts inside and outside two circle reinforcing bars in the concrete, is distributed with steel fibre in concrete.

Advantage of the present utility model is:

Because the stressed complexity of ingate place shaft wall structure, concrete not only will be subjected to action of compressive stress, but also to be subjected to tensile stress and shear stress effect, the borehole wall is easier to break, therefore, adopt steel fibrous concrete to replace ordinary concrete at coal mine deep well ingate place suitable for reading, mainly be to improve the composite bearing power such as tension, shearing resistance of the borehole wall, stressed to the borehole wall is very favourable.According to Field Research and theory analysis, above the past ingate during shaft lining breakage, mainly be that bigger sinking distortion appears in the ingate top board, make the borehole wall be subjected to bigger action of pulling stress, cause shaft lining breakage, so, bad for avoiding the borehole wall to draw, the 5m position is provided with a big wall seat of single taper on ingate, and the borehole wall is disconnected at this place, the distortion that then can pass through it avoids stress to concentrate the part stress release.

Description of drawings:

Fig. 1 is the utility model structural representation.

The specific embodiment:

A kind of novel shaft wall structure in coal mine deep well ingate place:

(2), in ingate 5m suitable for reading position, the outer wall of the annular borehole wall is provided with several single conical wall seats 1, wall seat soffit is the plane, the annular borehole wall is positioned at wall seat soffit place and disconnects, and forms annular isolation seam 2, isolates in the seam 2 and smears water proofing asphalt.

Claims

1. a kind of novel shaft wall structure in coal mine deep well ingate place is characterized in that:

2. a kind of novel shaft wall structure in coal mine deep well ingate according to claim 1 place, it is characterized in that: described annular borehole wall concrete structure is two circle steel fiber reinforced concrete structures, be to adopt inside and outside two circle reinforcing bars in the concrete, in concrete, be distributed with steel fibre.