A model test device for anti-explosion performance of anchor rod

Abstract

A model test device for anti-explosion performance of anchor rods comprises a box body, a supporting mechanism and a hanging and rotating mechanism, wherein the box body is arranged on the inner side of the supporting mechanism, and the hanging and rotating mechanism is arranged on the rear side of the supporting mechanism; the box body is composed of an outer shell and an upper cover and a lower cover, wherein the upper cover and the lower cover are respectively arranged horizontally on the upper and lower parts of the outer shell, and the outer shell is an inverted trapezoidal shell body with parallel front and rear parts and an open upper and lower part, and the outer side of the outer shell is evenly provided with channel steels for increasing strength, the notches of the channel steels face outwards, and the inner planes are in contact with the outer wall of the outer shell, and bolt through holes for fixing bolts are evenly provided on the upper and lower channel steels of the outer shell; the present invention adopts the above technical scheme and has achieved good results: the model test device for anti-explosion performance of anchor rods performs anti-explosion model tests of anchor rods in a rotating box body, and the box body has sufficient internal space, which can not only meet the needs of larger-scale anchor rod model tests, but also can set multiple anchor rods to realize group anchor effect simulation. By rotating the direction of the box, the explosives and anchors can be easily installed, and the explosion inside the box can effectively avoid the splashing of model fragments and personal injury, which greatly facilitates the anchor anti-explosion performance test.

Description

Technical Field

[0001] The invention mainly relates to the technical field of geotechnical engineering reinforcement, and in particular to a model test device for anti-explosion performance of anchor rods. Background Art

[0002] Sprayed anchor support is a widely used support form in the field of geotechnical engineering reinforcement, and plays an important role in engineering fields such as water conservancy, transportation, mining, and national defense. In recent years, in order to effectively respond to the challenges of engineering blasting, accidental explosions, military strikes, etc. to the construction and operation and maintenance safety of geotechnical engineering, the study of the explosion resistance of anchor rods has gradually received attention. Due to the complexity of the explosion resistance problem of anchor rods, indoor tests are one of the main research methods. Compared with field tests, indoor tests have the advantages of low cost and good repeatability, and are usually carried out on special test devices. The existing anchor rod explosion resistance model test device usually uses a small scale to study the explosion resistance reinforcement effect of anchor rods (cables), but because the model anchor rod is small in size, it is impossible to study the explosion resistance of anchor rods with different structural types. Therefore, in order to solve the above problems, it is necessary to develop a new anchor rod explosion resistance model test device that can carry out large-scale explosion resistance tests of anchor rods with different structural types and simulate the group anchor effect. Summary of the invention

[0003] The present invention proposes a novel anchor anti-explosion performance model test device which can not only carry out larger-scale anchor anti-explosion performance model tests of different structural types, but also simulate the group anchor effect. At the same time, it can effectively solve the problems of difficulty in installing explosives and anchors during the test, and the problem of model fragments easily flying out and causing accidental injuries to personnel.

[0004] The purpose of the present invention is achieved by adopting the following technical solutions:

[0005] A model test device for anti-explosion performance of anchor rods comprises a box body, a supporting mechanism and a lifting and rotating mechanism, wherein the box body is arranged on the inner side of the supporting mechanism, and the lifting and rotating mechanism is arranged on the rear side of the supporting mechanism; the box body is composed of an outer shell and an upper cover and a lower cover, wherein the upper cover and the lower cover are respectively arranged horizontally on the upper and lower parts of the outer shell, and the outer shell is an inverted trapezoidal shell body with parallel front and rear parts and an open upper and lower part, and the outer side of the outer shell is evenly provided with channel steels for increasing strength, the notches of the channel steels face outwards, and the inner planes are in contact with the outer wall of the outer shell, and bolt through holes for fixing bolts are evenly provided on the upper and lower channel steels of the outer shell, and reinforcing plates are symmetrically provided on the middle upper part of the front and rear surfaces of the outer shell, and a rotating shaft is provided in the middle of the outer sides of the front and rear reinforcing plates, and lifting rings are provided at the four corners of the left and right sides of the outer shell.

[0006] The support mechanism is a support seat arranged in parallel front and back, the support seat is a triangular truss structure, a bearing seat is arranged at the upper end of the support seat, the bearing seats of the front and rear support seats correspond to the front and rear rotating shaft positions of the outer shell and are installed in coordination, the height of the support seat is greater than the height of the box shell, and the support seat is welded by channel steel.

[0007] The hanging and rotating mechanism is composed of a hanger and a hand winch. The hanger is a "door"-shaped structure frame, composed of columns and crossbeams. The columns are vertically arranged on both sides of the rear of the supporting mechanism, and the crossbeams are horizontally arranged on the upper part of the columns. The two ends of the crossbeams extend outward to the outside of the columns. The hand winch is arranged on the outside of the column below the hanger crossbeam, and the hook of the hand winch is connected to the lifting rings on both sides of the outer shell; the height of the hanger is greater than the height of the box outer shell.

[0008] The upper cover and lower cover are rectangular plate structures, and upper cover through holes and lower cover through holes are arranged at the edges of the upper cover and lower cover corresponding to the threaded through holes in the upper and lower parts of the shell. The upper cover and lower cover are connected to the shell by bolts passing through the upper cover through holes or the lower cover through holes and the bolt through holes of the shell respectively. Longitudinal reinforcing rods are evenly arranged on the upper cover and lower cover, and a charging through hole for charging is arranged in the center of the upper cover.

[0009] The present invention adopts the above technical scheme and achieves good results: the anchor anti-explosion performance model test device performs the anchor anti-explosion model test in a rotating box. The box has sufficient internal space, which can not only meet the needs of large-scale anchor model tests, but also set multiple anchors to realize group anchor effect simulation. The direction of the box can be rotated to make it very easy to install explosives and anchors, and the explosion in the box can effectively avoid the splashing of model fragments and avoid causing harm to personnel, which brings great convenience to the anchor anti-explosion performance test. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a structural schematic diagram of the present invention.

[0011] Figure 2 for Figure 1 Left view of .

[0012] In the figure: 1. outer shell, 2. channel steel, 3. support seat, 4. bearing seat, 5. hanger, 6. upper cover, 7. hand chain hoist, 8. lifting ring, 9. reinforcement plate, 10. rotating shaft, 11. lower cover. DETAILED DESCRIPTION

[0013] The present invention is described with reference to the accompanying drawings.

[0014] like Figure 1 , Figure 2The present invention discloses a model test device for anti-explosion performance of anchor rods, comprising a box, a supporting mechanism and a lifting mechanism. The supporting mechanism is a supporting seat 3 arranged in parallel in front and back, and the supporting seat 3 is a triangular truss structure. A bearing seat 4 is arranged on the upper end of the supporting seat 3, and the supporting seat 3 is welded by channel steel. The box is arranged on the inner side of the supporting mechanism, and the box is composed of an outer shell 1, an upper cover 6 and a lower cover 11. The outer shell 1 is an inverted trapezoidal shell with an upper part parallel to the front and back and an open lower part. The outer side of the outer shell 1 is evenly provided with channel steel 2 for increasing strength. The notch of the steel 2 faces outward, and the inner plane contacts the outer wall of the shell 1. Bolt through holes for fixing bolts are evenly arranged on the uppermost and lowermost channel steels of the shell 1. Reinforcement plates 9 are symmetrically arranged on the middle upper part of the front and rear surfaces of the shell 1. A rotating shaft 10 is arranged in the middle of the outer sides of the front and rear reinforcement plates 9. The rotating shaft 10 corresponds to the bearing seats 4 of the front and rear support seats 3 and is installed in coordination with them. The four corners of the left and right sides of the shell 1 are provided with lifting rings 8. The height of the shell 1 is less than the height of the support seat 3, thereby ensuring the rotation of the shell 1 on the support seat 3. The upper cover 6 and the lower cover 11 are arranged horizontally at the upper and lower parts of the shell 1, and the upper cover 6 and the lower cover 11 are rectangular plate structures. Through holes are arranged on the upper and lower covers 11 at positions corresponding to the threaded through holes on the upper part of the shell 1. The upper cover 6 and the lower cover 11 are connected to the shell 1 by bolts passing through the through holes and the bolt through holes of the shell 1. Longitudinal reinforcing rods are evenly arranged on the upper part of the upper cover 6, and a charging through hole for charging is arranged at the center of the upper cover 6; the hanging and rotating mechanism is arranged at the rear side of the supporting mechanism, and the hanging and rotating mechanism is composed of a hanger 5 and a hand pull The hand chain hoist 7 is composed of a hoist 7, and the hanger 5 is a "door" shaped structure frame, which is composed of columns and cross beams. The columns are vertically arranged on both sides of the rear of the support seat 3 of the supporting mechanism, and the cross beams are horizontally arranged on the upper part of the columns. The two ends of the cross beam extend outward to the outside of the columns. The hand chain hoist 7 is arranged on the outside of the column below the cross beam of the hanger 5. The hook of the hand chain hoist 7 is connected with the rings 8 on both sides of the outer shell 1. The height of the hanger 5 is greater than the height of the box outer shell 1. The hand chain hoist 7 on the hanger 5 can control the rotation speed and direction of the shell 1 and ensure the safety of the rotation of the shell 1.

[0015] When the anchor anti-explosion performance model test device is used, first open the upper part of the shell 1, cover the lower cover 11 of the upper and lower parts, connect it with the upper shell 1 with bolts, fill the inner side of the shell 1 with model materials for simulating rock mass, and after the rock mass model materials are filled and cured for a specified time, cover the upper cover 6, connect it with the lower shell 1 with bolts, start the hand chain hoists 7 on both sides of the lifting mechanism, rotate the shell 1 slowly, turn it 180 degrees, and turn the lower cover upward, remove the lower cover 11, and excavate a simulated cavern with a certain cross-sectional shape on the simulated rock mass according to the test plan, start the hand chain hoists 7 on both sides of the lifting mechanism, rotate the shell 1 slowly about 120 degrees, and drill the anchor for installing the anchor at the set position with a special drilling rig. Hole, then place the anchor rod for explosion-proof test into the anchor rod hole, and inject grouting grout for fixing the anchor rod into the anchor rod hole. After curing for the specified time, start the hand chain hoists 7 on both sides of the lifting mechanism, slowly rotate the shell 1, so that the lower part with the anchor rod is vertically downward, and dig a charging hole through the charging through hole reserved in the center of the upper cover 6, and place the test charge at the bottom of the charging hole, and fill it with gun mud, lead the test charge detonating wire from the charging through hole of the upper cover 6, and then detonate the internal charge through the wire, and the charge explodes in the simulated rock medium. After completing the explosion test, turn the shell 1 to the side through the hand chain hoist 7, observe the damage of the anchor rod and record the parameters after the explosion, and complete the simulated explosion-proof test process of the anchor rod.

[0016] Parts of the present invention not described in detail are prior art.

Claims

1. A model test device for anti-explosion performance of anchor rods, comprising a box body, a supporting mechanism and a hanging and rotating mechanism, wherein the box body is arranged on the inner side of the supporting mechanism, and the hanging and rotating mechanism is arranged on the rear side of the supporting mechanism; the box body is composed of an outer shell and an upper cover and a lower cover, wherein the upper cover and the lower cover are respectively arranged horizontally on the upper and lower parts of the outer shell, and the outer shell is an inverted trapezoidal shell body with parallel front and rear parts and an open upper and lower part, and the outer side of the outer shell is evenly provided with channel steels for increasing strength, the notches of the channel steels are outward, and the inner planes are in contact with the outer wall of the outer shell, and bolt through holes for fixing bolts are evenly provided on the upper and lower channel steels of the outer shell, and reinforcing plates are symmetrically arranged on the middle upper part of the front and rear parts of the outer shell, and a rotating shaft is arranged in the middle of the outer sides of the front and rear reinforcing plates, and the four corners of the left side and the right side of the outer shell are all provided with hanging rings; The support mechanism is a support seat arranged in parallel in front and back, the support seat is a triangular truss structure, a bearing seat is arranged at the upper end of the support seat, the bearing seats of the front and rear support seats correspond to the positions of the rotating shafts in front and back of the shell and are installed in coordination, the height of the support seat is greater than the height of the box shell, and the support seat is welded by channel steel; The hanging and rotating mechanism is composed of a hanger and a hand chain hoist. The hanger is a "door" shaped structure frame, composed of columns and beams. The columns are vertically arranged on both sides of the rear of the supporting mechanism, and the beams are horizontally arranged on the upper part of the columns. The two ends of the beams extend outward to the outside of the columns. The hand chain hoist is arranged on the outside of the column under the hanger beam, and the hook of the hand chain hoist is connected to the rings on both sides of the outer shell; the height of the hanger is greater than the height of the box shell.

2. The anchor bolt explosion resistance model test device according to claim 1, characterized in that: The upper cover and lower cover are rectangular plate structures, and upper cover through holes and lower cover through holes are arranged at the edges of the upper cover and lower cover corresponding to the threaded through holes in the upper and lower parts of the shell. The upper cover and lower cover are connected to the shell by bolts passing through the upper cover through holes or the lower cover through holes and the bolt through holes of the shell respectively. Longitudinal reinforcing rods are evenly arranged on the upper cover and lower cover, and a charging through hole for charging is arranged in the center of the upper cover.

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