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a co 2 Micro blast combined with tbm rock breaking device

A rock-breaking device, CO2 technology, applied in mining equipment, tunnels, earth-moving drilling, etc., can solve the problems of uneven sealing of the face, affecting the installation of blasting pipes, etc., and achieves easy operation, improved continuity, and high construction efficiency. Effect

Active Publication Date: 2021-12-21
INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Moreover, after the existing technology breaks the rock, it will lead to the unevenness of the face of the face, which will cause the problem of sealing, resulting in CO 2 The gasket of the blasting device cannot be well sealed with the drilled hole on the face, which affects the installation of subsequent blasting tubes and other issues

Method used

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  • a co <sub>2</sub> Micro blast combined with tbm rock breaking device
  • a co <sub>2</sub> Micro blast combined with tbm rock breaking device
  • a co <sub>2</sub> Micro blast combined with tbm rock breaking device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0151] In this example, CO 2 Micro-explosion combined TBM rock breaking device 1 includes cutter head mechanism 2, drilling rig installation mechanism 3 and CO 2 Blasting device mounting mechanism 4; drilling rig mounting mechanism 3 and CO 2 The blasting device installation mechanism 4 is alternately arranged on the cutter head mechanism 2; the cutter head mechanism 2 is installed on the TBM main bearing; the belt conveyor 5 is installed on the support frame 6;

[0152] The cutterhead mechanism 2 includes a positive cutterhead 2.1 and a side cutterhead 2.2;

[0153] The side cutter head 2.2 is located on the outer periphery of the front cutter head 2.1;

[0154] Rig mounting cylinder 3.2 and CO of rig mounting mechanism 3 2 CO of blasting device installation mechanism 4 2 The installation cylinders 4.2 are alternately arranged on the positive cutter head 2.1;

[0155] The mechanical cutter 2.11 is arranged on the positive cutterhead 2.1; the side cutterhead 2.2 is equipp...

Embodiment 2

[0165] its CO 2 The micro-explosion combined TBM rock-breaking device 1 and its rock-breaking method are the same as in Embodiment 1, except that the rock mass in this embodiment is blasted and cut for a certain time, and the contour of the tunnel surface formed at last is not flat (as shown in Fig. 30), then there are differences in the strokes of the drilling rod of the drilling rig in the rock mass.

[0166] In this embodiment, a depth measurement sensor is set on the drilling rig (being the prior art); in this embodiment, the depth data of the actual drilling of the drilling rig is obtained by the depth measurement sensor on the drilling rig, and according to the depth data, the next stage CO 2 The filling amount of the blasting device and the length of the blasting tube are adjusted; Figure 30 , the actual working footage of the drilling rigs in area A is less than the actual working footage of the drilling rigs in area B, the adjustment method in this embodiment is: in...

Embodiment 3

[0168] its CO 2 Micro-explosion combined TBM rock-breaking device 1 and rock-breaking method thereof are the same as embodiment 2, the difference is that in this embodiment, the tunnel face contour line is an inclined structure or a rotating structure (such as Figure 31 shown); in Figure 31 Among them, the actual working footage of the drilling rigs in area C is greater than the actual working footage of drilling rigs in area D. The adjustment method in this embodiment is: when the TBM turns, the drilling length in area C is greater than that in area D. In the next stage, the state CO 2 When blasting the device, according to the depth of the borehole, the CO 2 The filling amount of gas is adjusted, that is, the area of ​​C blasthole CO 2 Burst tube length and CO 2 The filling volume is larger than the D blast hole area.

[0169] Other unspecified parts belong to the prior art.

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Abstract

The invention discloses a CO 2 Micro-burst combined with TBM rock breaking device. It includes cutterhead mechanism, rig mounting mechanism and CO 2 Blasting device mounting mechanism; drilling rig mounting mechanism and CO 2 The installation mechanism of the blasting device is arranged on the cutter head mechanism; the closed end of the hole formed by the drilling rig installation mechanism drilled into the rock wall is a cylindrical structure, and the open end is a conical structure; 2 When blasting tube, CO 2 The conical gasket of the blasting device installation mechanism is installed at the opening end of the drill hole; the cutter head mechanism is installed on the main bearing of the TBM; the belt conveyor is installed on the support frame; the belt conveyor is located behind the cutter head mechanism. The invention has the advantages of continuous construction, high construction efficiency, good rock breaking effect and high safety, and is suitable for tunnel excavation construction of hard rock and extremely hard rock.

Description

technical field [0001] The invention relates to the field of tunnels and underground engineering, in particular to the field of TBM tunnel construction under complex geological conditions. More specifically it is a CO 2 Micro-burst combined with TBM rock breaking device. Background technique [0002] With the advancement of technology, higher requirements are put forward for the construction efficiency and construction effect of hard rock and extremely hard rock TBM tunnel boring machines in different environments. For the excavation of urban hard rock and extremely hard rock, the vibration control requirements of urban surface blasting are high, and traditional explosive blasting has high requirements for use conditions, use environment, and daily management. The rock wears quickly, the frequency of tool change is high, and the economic effect is poor. In addition, for the construction of TBM tunnels with a wide distribution of some hard rocks and high ecological environ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/00E21D9/10E21D9/12E21C37/14
CPCE21D9/008E21D9/1006E21D9/12E21C37/14
Inventor 周辉李海波徐福通卢景景李彦恒张传庆高阳胡明明崔健
Owner INST OF ROCK & SOIL MECHANICS CHINESE ACAD OF SCI
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