CN220580959U - Can have enough to meet need underground works control excavation pore-forming device - Google Patents

Abstract

The utility model provides a but turnover underground works control excavation pore-forming device, includes locating rack, drilling equipment; the positioning frame comprises a stress rod piece, the stress rod piece is anchored on the excavated building base surface, and a hole top standard height control pipe and a vertical hole guide pipe are fixed on the stress rod piece; the Kong Dingbiao high control pipe is horizontally arranged and is a top horizontal control pipe for controlling the pore-forming depth; the vertical hole guide pipe is vertically arranged and is a vertical control rod piece for controlling the verticality and the dip angle of the hole; the drilling equipment comprises a hand air drill main machine, the lower end of the hand air drill main machine is connected with a fixed-length drill rod, and the fixed-length drill rod penetrates through the vertical hole guide pipe and drills to the elevation of the bottom of the hole. The device for controlling excavation and pore-forming of the turnover underground engineering provided by the utility model ensures high pore-forming quality.

Description

Can have enough to meet need underground works control excavation pore-forming device

Technical Field

The utility model relates to hole-making equipment, in particular to a turnover underground engineering control excavation hole-making device, which relates to the field of underground engineering control excavation hole-making construction of water and electricity conservancy, highways, municipal engineering and the like.

Background

The existing underground engineering rock-bed excavation molding quality requirements are higher and higher, and an excavation mode of blasting with vertical holes and inclined holes with double smooth surfaces is generally adopted, so that the integrity and stability of the formation of the rock wall surface are ensured, and the surrounding rock loosening range caused by blasting is reduced as much as possible. At present, a reserved protective layer hand pneumatic drill layering, sequencing and blocking method is adopted for the excavation construction of the rock table, and is limited by the design structural shape and size of the rock table, large-scale construction equipment such as a rock drilling trolley and the like can not be adopted for hole forming, and only a small hand pneumatic drill is adopted for vertical hole and inclined hole forming so as to meet the requirements of the rock table on control blasting forming. The manual hole forming construction difficulty of vertical holes or inclined holes is high, the deviation of the hole bottom is gradually increased along with the increase of the hole depth, the influence of artificial subjective factors is large, splayed holes, intersecting holes, divergent holes and the like are easy to form, the position and the elevation of the hole bottom cannot be accurately controlled, the hole forming quality cannot be effectively ensured, and therefore the final forming effect of a rock bench after smooth blasting cannot be ensured.

Disclosure of Invention

The utility model aims to solve the technical problems of large difficulty, deviation of hole bottoms and the like in double-smooth blasting hole forming construction of a reserved protection layer of an underground engineering rock table.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a but turnover underground works control excavation pore-forming device, includes locating rack, drilling equipment;

the locating frame comprises a stress rod piece, the stress rod piece is anchored on the excavated building base surface, and a hole top standard height control pipe and a vertical hole guide pipe are fixed on the stress rod piece; the Kong Dingbiao high control pipe is horizontally arranged and is a top horizontal control pipe for controlling the pore-forming depth; the vertical hole guide pipe is vertically arranged and is a vertical control rod piece for controlling the verticality and the dip angle of the hole;

the drilling equipment comprises a hand air drill main machine, the lower end of the hand air drill main machine is connected with a fixed-length drill rod, and the fixed-length drill rod penetrates through the vertical hole guide pipe and drills to the elevation of the bottom of the hole.

And a centering steel clamping piece is arranged in the top end of the vertical hole guide pipe, and is filled in a gap between the fixed-length drill rod and the vertical hole guide pipe.

The stressed rod piece comprises a vertical supporting pipe, an inclined supporting pipe and a vertical anchoring pipe, wherein the vertical supporting pipe and the vertical anchoring pipe vertically enter rock and are anchored by grouting; two ends of the inclined support tube are respectively connected with the vertical support tube and the vertical anchoring tube through cross fasteners.

The vertical support tube is fixed with an upper transverse support tube and a lower transverse support tube from top to bottom through cross fasteners.

The utility model relates to a turnover underground engineering control excavation pore-forming device, which has the following technical effects: the vertical supporting tube, the inclined supporting tube and the vertical anchoring tube form a stressed rod piece, so that the device has enough strength, rigidity and stability when being used as a support; by arranging the Kong Dingbiao high control pipe, when the fixed-length drill rod is drilled to the elevation of the hole bottom, the hand pneumatic drill host just reaches the Kong Dingbiao high control pipe, so that the position of the hole bottom is effectively controlled; by arranging the vertical supporting pipe, vertical guiding and positioning can be performed when the fixed-length drill rod is drilled; and the centering steel clamping piece can ensure the absolute centering of the fixed-length drill rod. To sum up, the device effectively solves the problems of large difficulty in hole bottom deviation caused by double smooth blasting hole forming of the reserved protective layer of the underground engineering rock table, easy formation of splayed holes, crossed holes, divergent holes and the like, greatly reduces the influence of artificial subjective factors on hole forming precision, and ensures the final forming effect of the rock table after smooth blasting. The device has the advantages of simple structure, flexible operation, economy, high efficiency and convenient construction.

Drawings

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

fig. 1 is a front elevational view of the present utility model.

Fig. 2 is a cross-sectional view of the present utility model.

Fig. 3 is an enlarged view of a portion of the present utility model at the center steel clip.

In the figure: kong Dingbiao high control pipe 1, vertical hole guide pipe 2, vertical support pipe 3, upper horizontal support pipe 4, lower horizontal support pipe 5, excavation base surface 6, hand drill host 7, fixed length drill rod 8, centering steel clamping piece 9, hole bottom elevation 10, design excavation control line 11, reservation protective layer 12, slant support pipe 13, vertical anchor pipe 14.

Detailed Description

1-3, the turnover underground engineering control excavation pore-forming device comprises a positioning frame and drilling equipment; the positioning frame consists of a Kong Dingbiao high control tube 1, a vertical hole guide tube 2, a vertical support tube 3, an upper transverse support tube 4, a lower transverse support tube 5, an inclined support tube 13 and a vertical anchoring tube 14. The drilling equipment consists of a hand pneumatic drill host 7, a fixed-length drill rod 8 and a centering steel clamping piece 9. In the figure, h represents the design depth.

Specifically, the Kong Dingbiao high control tube 1 is a top horizontal control tube for controlling the hole forming depth, and the Kong Dingbiao high control tube 1 is determined according to the designed hole forming depth and the designed length of the vertical guide tube 2. The fixed-length drill rod 8 can be automatically clamped after drilling to the depth of a designed hole, and the lower end part of the hand drill main machine 7 can not drill downwards any more.

Kong Dingbiao high control pipe 1 adopts 1.5 inch steel pipe preparation, and length is according to the excavation segmentation, and every hole top elevation control pipe 1 is about 15m length generally, and Kong Dingbiao high control pipe 1 passes through steel pipe fastener and vertical stay tube 3 and vertical hole direction pipe 2 connection fixed.

The vertical hole guide pipe 2 is a vertical control rod piece for controlling the perpendicularity and the inclination angle of the hole, and is determined by the condition of rock face super-underexcavation, the condition of a hand air drill host machine 7 and design of hole forming parameters. The vertical hole guide tube 2 is made of a 1.5 inch steel tube, the length is generally 1000mm, and the spacing is generally 300mm according to a smooth blasting test. The vertical hole guide pipe 2 is fixedly connected with the upper transverse support pipe 4 and the lower transverse support pipe 5 through cross fasteners.

The vertical support tube 3, the inclined support tube 13 and the vertical anchor tube 14 are stressed rod pieces for supporting the strength, the rigidity and the stability of the sample frame. The vertical supporting tube 3, the inclined supporting tube 13 and the vertical anchoring tube 14 are all made of 1.5 inch steel tubes. The length of the vertical supporting tube 3 is generally 1500mm, and the rock entering depth is more than 500mm. The depth of the vertical anchoring pipe 14 into the rock is larger than 500mm, the arrangement space of the stressed rod pieces is generally 1500mm, and the vertical anchoring pipe 14 is fixedly connected and anchored on the excavation foundation surface 6 through cross fasteners.

The hand pneumatic drill main machine 7 provides power output for the impact and drilling of the fixed-length drill rod 8. And the model YT-28 or the like is adopted, the hand pneumatic drill main machine 7 is firmly buckled with the fixed-length drill rod 8, and the hand pneumatic drill main machine passes through the vertical hole guide pipe 2 to realize the drilling construction operation.

The fixed-length drill rod 8 is a drill rod customized for hole-making drilling, and a high-strength alloy drill bit is arranged at the bottom. The length of the fixed-length drill rod 8 is customized according to the designed hole depth by adopting a drill rod matched with a YT-28 type or similar type drilling machine, and the positioning of hole making is realized by penetrating through the vertical hole guide pipe 2.

The centering steel clamping piece 9 provides support for accurate positioning of hole forming drilling, is placed at the pipe orifice of the vertical hole guide pipe 2, fills the gap between the fixed-length drill pipe 8 and the vertical hole guide pipe 2, and ensures absolute centering of the fixed-length drill pipe 8. The steel pipe is manufactured by cutting a steel pipe cylinder with the outer diameter of 40mm into two semicircles, and the length is generally 100mm.

Working principle and process:

1) Firstly measuring, paying-off, positioning and marking on a section to be excavated on site, marking the position of an orifice of the vertical support pipe 3 and the position of the vertical anchor pipe 14 according to the interval of 1500mm, adopting a hand drill to perform hole making with the depth of more than 500mm, then inserting the vertical support pipe 3 and the vertical anchor pipe 14 into the holes, and grouting and anchoring by cement mortar.

2) The upper transverse supporting tube 4, the lower transverse supporting tube 5 and the inclined supporting tube 13 are firmly connected with the vertical supporting tube 3 and the vertical anchoring tube 14 by adopting cross fasteners, then the Kong Dingbiao high-control tube 1 is installed according to measurement and positioning, and finally the vertical guide tube 2 is installed on the hole top standard high-control tube 1 according to a mark of a determined interval (generally 300 mm) of a smooth blasting test.

3) After the sample frame is installed, the connection firmness among the fasteners is checked and accepted, and then three important parameters of the spacing, the perpendicularity and the inclination angle of the vertical hole guide pipe 2 are rechecked so as to meet the design requirement.

4) According to the depth of the designed hole, a short fixed-length drill rod 8 is inserted into the vertical hole guide pipe 2 and then is clamped with the hand air drill host machine 7, a centering steel clamping piece 9 is inserted into the pipe orifice of the vertical hole guide pipe 2, an air pipe and a water pipe valve of the hand air drill host machine 7 are opened to start hole forming construction, after the stroke of the short fixed-length drill rod 8 is completed, the short fixed-length drill rod 8 is changed into a final hole for drilling until the lower end part of the hand air drill host machine 7 is clamped to the hole top standard height control pipe 1, namely, the purpose that the designed hole bottom elevation 10 is reached is achieved, and single hole forming is finished.

5) And extracting the centering steel clamping piece 9, extracting the hand drill host machine 7 and the fixed-length drill rod 8 from the vertical hole guide pipe 2, transferring the same steps into the next hole construction, and completing the hole construction of the whole section by circulation.

6) After the section hole is formed, the sample frame unit is disassembled, cleaned and maintained and then can be transferred to the next section for assembly and continuous use.

Claims (4)

1. The utility model provides a but turnover underground works control excavation pore-forming device which characterized in that: comprises a locating rack and drilling equipment;

the locating frame comprises a stress rod piece, the stress rod piece is anchored on an excavation building base surface (6), and a hole top standard height control pipe (1) and a vertical hole guide pipe (2) are fixed on the stress rod piece; the Kong Dingbiao high control pipe (1) is horizontally arranged and is a top horizontal control pipe for controlling the pore-forming depth; the vertical hole guide pipe (2) is vertically arranged and is a vertical control rod piece for controlling the verticality and the dip angle of the hole;

the drilling equipment comprises a hand air drill main machine (7), the lower end of the hand air drill main machine (7) is connected with a fixed-length drill rod (8), and the fixed-length drill rod (8) penetrates through the vertical hole guide pipe (2) and drills to the hole bottom elevation (10).

2. The epicyclic underground works control excavation pore-forming apparatus of claim 1, wherein: and a centering steel clamping piece (9) is arranged in the top end of the vertical hole guide pipe (2), and the centering steel clamping piece (9) is filled in a gap between the fixed-length drill rod (8) and the vertical hole guide pipe (2).

3. The epicyclic underground works control excavation pore-forming apparatus of claim 1, wherein: the stressed rod piece comprises a vertical supporting pipe (3), an inclined supporting pipe (13) and a vertical anchoring pipe (14), wherein the vertical supporting pipe (3) and the vertical anchoring pipe (14) are vertically in rock and are anchored by grouting; two ends of the inclined support tube (13) are respectively connected with the vertical support tube (3) and the vertical anchoring tube (14) through cross fasteners.

4. A turnover underground works control excavation pore-forming apparatus as claimed in claim 3, wherein: an upper transverse support tube (4) and a lower transverse support tube (5) are fixed on the vertical support tube (3) from top to bottom through cross fasteners.