CN102852552A - High-water material filling column and construction method thereof - Google Patents

Abstract

A high-water material filling column and a construction method thereof relate to the technical field of mechanical construction of filling column supports. A filling bag is made into a cylindrical enclosed structure. A filling feed pipe and an air discharge pipe are sewn to the top edge of the filling bag. Strapping strips are sewn to the upper side, the middle side and the lower side of the filling bag. A layer of steel mesh reinforcement which has slightly smaller diameter than a section of the filling bag is wrapped outside the side of filling bag so as to wrap for the whole filling height. The steel mesh reinforcement helps solidification of slurry filled in the filling bag and to restrain transverse deformation of filler under pressure. In order to improve deformation resistance and bearing capacity of the filler, circular steel hoops are sleeved to the outer side of the steel mesh reinforcement at intervals. The steel hoops can be sleeved or directly welded to the steel mesh reinforcement. Wood cribs, masonry columns and the like can be replaced by the novel high-water material filling column which is simple in process and high in mechanization level, and enlarges ventilation section and the like. The high-water material filling column is applicable to downhole temporary or permanent supports, road-side supports of gob-side entry retaining and the like.

Description

A kind of high-water material packed column and job practices thereof

Technical field

The present invention relates to support technology field, down-hole, especially a kind ofly be applicable to the interim or permanent support in down-hole, and the field such as gob side entry retaining roadside support.

Background technology

When underworkings is out of shape seriously, when load sharply increases, usually adopts grillage or hydraulic prop, i iron, U-shaped steelframe canopy etc. to add strong supporting.The employing grillage carries out interim or there is following shortcoming in permanent support: 1) large, the easy spontaneous combustion of wood consumption is unfavorable for environmental protection and down-hole fireproof; 2) labor strength is high, and speed of application is slow, is difficult to satisfy the needs of modernized high-yield and high-efficiency mine; 3) crib protection intensity is low, supporting capacity is little, and unstable failure easily occurs under Action of Fixed Abutment Pressure, does not have due reinforcement supporting effect; 4) underworkings limited space, grillage belongs to the wide cut supporting, is unfavorable for underground ventilating; 5) the grillage cost is high; I iron or U-shaped steel belong to passive protecting, and in addition, supporting capacity is little; Hydraulic prop belongs to active support, Support Resistance is larger, adopts Action of Fixed Abutment Pressure, roadway with large deformation supporting requirement but can not satisfy.Therefore, research employing cost is low, mechanization is constructed, carry fast, final Support Resistance is large and the simple high-water material of constructing is constructed packed column, can overcome the above problems at one stroke.

Summary of the invention

The objective of the invention is to overcome the little deficiency of prior art Support Resistance, provide a kind of construct simple, mechanization degree is high, take up room the high-water material packed column little, that enabling capabilities is large, good in economic efficiency.

The present invention includes filling bag, steel mesh reinforcement and stirrup, in the filling bag upper end charging ductule and escape pipe are set respectively, the inner of described charging ductule and escape pipe communicates with filling bag inside respectively, in described filling bag, be marked with the high-water material slurries, be sewed with respectively in the upper, middle and lower of filling bag side for hanging and fixing top bundle bar, middle part bundle bar and bottom bundle bar; The outside in filling bag is enclosed with cylindrical bar-mat reinforcement, at the peripheral interval of steel mesh reinforcement clamping rings shape stirrup.

The diameter of steel mesh reinforcement of the present invention is more smaller than the diameter of described filling bag.

Each stirrup of the present invention and steel mesh reinforcement welding or colligation.Work to increase radial constraint, solidifying fills body.

Cost of the present invention is low, convenient construction, setting rate fast, mechanization is constructed, strong, the final Support Resistance of early stage supporting capacity is large.Adopt the alternative grillage of the present invention, build post etc. by laying bricks or stones, have that technique is simple, mechanization degree is high, enlarge the advantage such as ventilation section, be applicable to the interim or permanent support in down-hole etc.

The present invention also proposes the method that adopts the high-water material packed column to construct.

Step is as follows:

1) then cleaning base plate float coal hangs filling bag at the filling space top board to the real end near the filling space, and filling bag Length Ratio packed height is long;

2) at interval, the steel mesh reinforcement outside annular stirrup is set, then filling bag is put into steel mesh reinforcement, again filling bag is tied up on steel mesh reinforcement;

3) at peripheral 2 ~ 3 hydraulic props in jail of beating of steel mesh reinforcement;

4) adopt the filling pump that slurries are injected in the filling bag by the charging ductule, the upper end of filling bag stops slip casting after arriving top board immediately, and ties up respectively charging ductule and escape pipe solid;

5) after slurries solidify in filling bag, remove hydraulic prop, namely finish 1 high-water material packed column construction.

The external surface of steel mesh reinforcement of the present invention has the annular stirrup of making after the crooked welding of a round steel every a determining deviation cover, stirrup and steel mesh reinforcement directly weld or colligation, play further solidifying fills body supporting capacity and non-deformability.

Compared with prior art, the present invention has the following advantages: 1) the few and not spontaneous combustion of material usage, and security reliability is high; 2) the obturation supporting capacity is large; 3) the obturation volume of constructing is little, takies drift section little, is conducive to ventilate; 4) mechanization degree is high, alleviates labor strength; 5) cost is low, simple to operate.In the roadway support field, has widely practicality.

Description of drawings

Fig. 1 is structural representation of the present invention.

Fig. 2 is the filling bag schematic diagram.

The specific embodiment

As shown in Figure 1 and Figure 2, high-water material packed column of the present invention is provided with filling bag 1, steel mesh reinforcement 3 and stirrup 2.

The cylinder that forms for the high-water material induration in the filling bag 1 arranges respectively charging ductule 4-1 and escape pipe 4-2 in the upper end of filling bag 1, and the inner of charging ductule 4-1 and escape pipe 4-2 communicates with filling bag 1 inside respectively.Be sewed with respectively in the upper, middle and lower of the side of filling bag 1 for hanging and bar 5-1 is pricked on fixing top, bar 5-2 is pricked at the middle part and bar 5-3 is pricked in the bottom.

Be enclosed with cylindrical bar-mat reinforcement 3 in the outside of filling bag 1, at the some annular stirrups 2 of peripheral compartment of terrain cover system of steel mesh reinforcement 3, stirrup 2 and steel mesh reinforcement 3 welding or colligations.

The diameter of cylindrical bar-mat reinforcement 3 is less than the diameter of cylindrical filling bag 1.

Construction sequence of the present invention is as follows:

A, first then cleaning base plate float coal or scum silica frost hang filling bag 1 at the filling space top board to the entity base plate near the filling space, bar 51 is pricked on filling bag 1 top be suspended on the top board of filling space.

B, with each root annular stirrup 2 spacer sleeve or be welded on the steel mesh reinforcement 3 and fixing, in the precalculated position, and filling bag 1 put into steel mesh reinforcement 3, again the middle part of filling bag side direction is pricked bar 5-2 and bottom and is pricked bar 5-3 and tie up respectively on steel mesh reinforcement 3.

C, at peripheral 2 ~ 3 hydraulic props in jail of beating of steel mesh reinforcement 3, vertical during with auxiliary obturation moulding and assurance filling.

D, will carry the flexible pipe of slurries to insert in the charging ductule 4-1 at filling bag 1 top, inwardly inject slurries.

With the closely knit top board of receiving of filling bag 1 filling, do not stay the slit, successfully stop immediately slip casting in case connect to push up, take off Grouting Pipe, with rope top fed ductule 4-1 and escape pipe 4-2 oral area are tied up respectively solidly, prevent that slurries are excessive.

E, after obturation is solidified and is had some strength, remove the hydraulic prop of obturation periphery, finish the construction of 1 high-water material packed column.

Reciprocal with this, until construction task is finished.

Claims (4)

1. high-water material packed column, it is characterized in that: comprise filling bag, steel mesh reinforcement and stirrup, in the filling bag upper end charging ductule and escape pipe are set respectively, the inner of described charging ductule and escape pipe communicates with filling bag inside respectively, in described filling bag, be marked with the high-water material slurries, be sewed with respectively in the upper, middle and lower of filling bag side for hanging and fixing top bundle bar, middle part bundle bar and bottom bundle bar; The outside in filling bag is enclosed with cylindrical bar-mat reinforcement, at the peripheral interval of steel mesh reinforcement clamping rings shape stirrup.

2. described high-water material packed column according to claim 1, it is characterized in that: the diameter of described steel mesh reinforcement is less than the diameter of described filling bag.

3. described high-water material packed column according to claim 1 is characterized in that: each stirrup and steel mesh reinforcement welding.

4. job practices of high-water material packed column as claimed in claim 1 is characterized in that may further comprise the steps:

1) then cleaning base plate float coal hangs filling bag at the filling space top board to the real end near the filling space, and filling bag Length Ratio packed height is long;

2) at interval, the steel mesh reinforcement outside annular stirrup is set, then filling bag is put into steel mesh reinforcement, again filling bag is tied up on steel mesh reinforcement;

3) at peripheral 2 ~ 3 hydraulic props in jail of beating of steel mesh reinforcement;

4) adopt the filling pump that slurries are injected in the filling bag by the charging ductule, the upper end of filling bag stops slip casting after arriving top board immediately, and ties up respectively charging ductule and escape pipe solid;

5) after slurries solidify in filling bag, remove hydraulic prop.

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