CN212158455U - Movable roadway surrounding rock deformation visualizer - Google Patents

Abstract

The utility model relates to the field of mining tools, in particular to a movable roadway surrounding rock deformation observation instrument; the foldable type hollow pipe fixing device comprises a hollow pipe which is vertically arranged, a lantern ring is fixedly sleeved at the lower part of the hollow pipe, a plurality of base supporting pull rods are hinged to the bottom of the lantern ring, a foldable type fixing base is fixedly connected to the bottom end of each base supporting pull rod, and one end of each foldable type fixing base faces to the central axis of the hollow pipe; two tape measure clamping grooves are fixed on the outer side of the upper part of the hollow pipe, and the central connecting line of the two tape measure clamping grooves penetrates through the central axis of the core pipe; the observation instrument further comprises a nut with a lantern ring and a telescopic pull rod scale, wherein the nut with the lantern ring is a ring sleeve, and the central axis of the ring sleeve is positioned in the vertical direction; the mobile roadway surrounding rock deformation observation instrument is visual and convenient in data reading; the equipment is simple, the portable dismantlement is convenient, and the investment is low, and the manual maintenance volume is little, has ensured the integrality of data, and tunnel country rock deformation can obtain monitoring at any time.

Description

Movable roadway surrounding rock deformation visualizer

Technical Field

The utility model relates to a mining instrument field, concretely relates to portable tunnel country rock deformation visulizer.

Background

The underground coal mine is required to carry out tunnel deformation and separation layer observation, roof activity rule analysis and the like, and the working face observation method carries out observation by installing a mine pressure observation instrument and an instrument. Carrying out roof separation observation on the coal roadway, the half coal rock roadway anchor rod and the anchor cable supporting roadway, and filling in a recording board; and (4) carrying out surrounding rock observation, analysis and forecast, and monitoring the moving approach of the roof separation layer, the roof bottom and the two sides, thereby providing reliable basic data for roof management of the tunneling working face.

However, due to the adverse factors of the coal pillars covered with the coal pillars, the small kiln damage area, the mining stress concentration coal pillars, the increase of the coal rock stress, the increase of the displacement of the roadway top and bottom plates (two sides), and the like, the difficulty in managing the top plate is obviously increased, and the adverse effects are brought to production and safety. In addition, the reserved small coal pillar mining puts higher requirements on surrounding rock stress and deformation monitoring. The displacement of the top plate and the bottom plate observed by the existing KY82 type top plate dynamic instrument is often damaged, and the cost is high; the displacement of the two sides is measured manually, the process is complicated, the measurement error is large, and the effect is not good.

Disclosure of Invention

The utility model discloses a solve present instrument to tunnel roof bottom plate displacement volume observation often damage, the expense is high, and the measuring method error of two group's displacement volumes is big, and the process is loaded down with trivial details, and the poor technical problem of effect provides a portable tunnel country rock deformation visulizer.

For solving the technical problem, the utility model discloses the technical scheme who adopts does: a movable roadway surrounding rock deformation observation instrument comprises a vertically arranged hollow pipe, wherein the lower part of the hollow pipe is fixedly sleeved with a lantern ring, the bottom of the lantern ring is hinged with a plurality of base supporting pull rods, the bottom ends of the base supporting pull rods are fixedly connected with a foldable fixing base, and one end of the foldable fixing base faces to the central axis of the hollow pipe; two tape measure clamping grooves are fixed on the outer side of the upper part of the hollow pipe, and the central connecting line of the two tape measure clamping grooves penetrates through the central axis of the core pipe; the observation instrument further comprises a nut with a lantern ring and a telescopic pull rod scale, wherein the nut with the lantern ring is a ring sleeve, the central axis of the ring sleeve is located in the vertical direction, and the nut is fixedly connected to the nut.

The working principle is as follows:

firstly, a cross point distribution method is applied to set observation points on a roadway top bottom plate and two sides, a base point is set on a top plate, and a nut with a lantern ring is screwed on an exposed thread of an anchor rod to serve as the base point. The base point is set on the bottom plate, a spike which is 100mm long is nailed on the bottom plate in advance, and the surface of the spike and the base point of the top plate are vertical correspondingly to be the base point. Base points are set on the two sides, and the side protection anchor rod supporting plates with the parallel heights of the two sides are used as the base points. All base points are marked by red paint, and the mobile roadway surrounding rock deformation observation instrument is installed to measure corresponding to the set base points. Hang scalable pull rod scale "0" scale end on the little ring cover of the nut that has the lantern ring, let the scale hang down naturally, according to the height in tunnel with the scale stretch into with the bottom plate fixed hollow tube in, read the observation data of roof displacement volume from the top edgewise of hollow tube. The tape measures are fixed in the tape measure clamping grooves, and the two tape measures can measure the width of two sides of the roadway in the left direction and the right direction.

Compared with the prior art the utility model discloses following beneficial effect has:

1. the utility model has visual and convenient data reading of the observation instrument;

2. the personnel walk and the vehicle can move at any time, so that the data can be conveniently observed, and relevant departments can be timely reported when the abnormality is found, so that corresponding measures can be taken;

3. the method is to comprehensively analyze data collected by observation contents, is successful through multiple tests, and has a new breakthrough in the aspect of monitoring the surrounding rock displacement of the roadway at the coal rock stress concentration section.

4. The movable roadway surrounding rock deformation observation instrument is simple in equipment, convenient to detach, low in investment and small in manual maintenance amount, the integrity of data is guaranteed, and roadway surrounding rock deformation can be monitored at any time;

5. by observing data, the dynamic change conditions of the top bottom plate and the two sides can be mastered at any time, and by comprehensively analyzing displacement peak positions and the like, scientific basis is provided for roadway support modification, and quick and effective support measures can be taken in time.

Drawings

Fig. 1 is the utility model discloses portable tunnel country rock deformation visulizer's structural schematic diagram.

The figures are labeled as follows:

1-hollow tube, 2-lantern ring, 3-base supporting pull rod, 4-folding fixed base, 5-tape measure clamping groove, 6-nut with lantern ring, 7-telescopic pull rod scale, 8-anchor rod, 9-top plate fixed base point and 10-bottom plate fixed base point.

Detailed Description

The present invention will be further described with reference to the following specific examples.

Example 1

As shown in fig. 1, the movable roadway surrounding rock deformation observation instrument comprises a hollow tube 1 which is vertically arranged, a lantern ring 2 is fixedly sleeved at the lower part of the hollow tube 1, a plurality of base supporting pull rods 3 are hinged to the bottom of the lantern ring 2, a folding type fixing base 4 is fixedly connected to the bottom end of each base supporting pull rod 3, and one end of each folding type fixing base 4 faces to the central axis of the hollow tube 1; two tape measure clamping grooves 5 are fixed on the outer side of the upper part of the hollow tube 1, and the central connecting line of the two tape measure clamping grooves 5 penetrates through the central axis of the core tube 1; the observation instrument further comprises a nut 6 with a lantern ring and a telescopic pull rod scale 7, wherein the nut 6 with the lantern ring is fixedly connected with the lantern ring with a central axis in the vertical direction.

The working process and principle are as follows:

firstly, a cross point distribution method is applied to set observation points on a roadway top bottom plate and two sides, a base point is set on a top plate, and a nut 6 with a lantern ring is screwed on an exposed thread of an anchor rod to serve as the base point. The base point is set on the bottom plate, a spike which is 100mm long is nailed on the bottom plate in advance, and the surface of the spike and the base point of the top plate are vertical correspondingly to be the base point. Base points are set on the two sides, and the side protection anchor rod supporting plates with the parallel heights of the two sides are used as the base points. All base points are marked by red paint, and the mobile roadway surrounding rock deformation observation instrument is installed to measure corresponding to the set base points. The scale end of a telescopic pull rod scale 7, namely '0', is hung on a small ring sleeve of a nut 6 with a ring, the scale naturally droops, the scale is stretched into a hollow tube 1 fixed with a bottom plate according to the height of a roadway, and observation data of the displacement of the top plate is read from the edge of the top end of the hollow tube. The tape measures are fixed in the tape measure clamping grooves 5, and the two tape measures can measure the width of two sides of the roadway in the left direction and the right direction.

The portable tunnel country rock visulizer that warp is to the stope receive the measurement (top bottom plate displacement volume, two group displacement volumes) of mining influence country rock deformation, detects the supporting pressure peak position country rock degree of deformation, also is the basic tool that the on-the-spot ore deposit was pressed and is surveyed: (1) top-bottom shift measurement range: 0-600 mm; (2) two sides shift measurement range: 0-1000 mm, (3) minimum reading value: 1 mm; (4) the error is less than 1%; (4) instrument use measurement height: 1.0-5.5m, width: 2.0-8.0 m.

Furthermore, the bottom of the lantern ring 2 is hinged with two base supporting pull rods 3, and the folding fixing base is a steel plate with the thickness of 200mm multiplied by 200 mm.

Further, the height of the hollow tube 1 is 1000mm, and the distance between the tape measure clamping groove 5 and the bottom end of the hollow tube 1 is 800 mm.

By the self-made movable roadway surrounding rock deformation observation instrument, 3000 pieces of capital are saved by 5000 yuan; the cost investment is saved, and the working efficiency is improved;

the problems of high investment cost, frequent damage and high maintenance cost of a monitoring instrument are solved, and through a large number of demonstration and analysis experiments and multiple field tests, the device has strong practicability and stable performance, is used for data analysis of surrounding rock deformation displacement and provides reliable measurement data. The method ensures timely and effective support mode and management, achieves good effect, saves a large amount of capital investment, and creates great economic and social benefits.

Claims (3)

1. The utility model provides a portable tunnel country rock visulizer that warp which characterized in that: the foldable type hollow pipe fixing device comprises a hollow pipe (1) which is vertically arranged, a lantern ring (2) is fixedly sleeved at the lower part of the hollow pipe (1), a plurality of base supporting pull rods (3) are hinged to the bottom of the lantern ring (2), a foldable fixing base (4) is fixedly connected to the bottom end of each base supporting pull rod (3), and one end of each foldable fixing base (4) faces to the central axis of the hollow pipe (1); two tape measure clamping grooves (5) are fixed on the outer side of the upper part of the hollow pipe (1), and a central connecting line of the two tape measure clamping grooves (5) penetrates through the central axis of the hollow pipe (1); the observation instrument further comprises a nut (6) with a lantern ring and a telescopic pull rod scale (7), wherein the nut (6) with the lantern ring is fixedly connected with the lantern ring, and the central axis of the lantern ring is located in the vertical direction.

2. The mobile roadway surrounding rock deformation observation instrument of claim 1, wherein: the bottom of the lantern ring (2) is hinged with two base supporting pull rods (3), and the folding fixing base is a steel plate with the thickness of 200mm multiplied by 200 mm.

3. The mobile roadway surrounding rock deformation observation instrument of claim 1 or 2, wherein: the height of the hollow pipe (1) is 1000mm, and the distance between the tape measure clamping groove (5) and the bottom end of the hollow pipe (1) is 800 mm.

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