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Underground roadway construction method suitable for double-shield tbm tunneling

A double-shield and roadway technology, applied in tunnels, shaft equipment, shaft linings, etc., can solve the problems of unsatisfactory application effect, less application of mining TBM, poor roof control effect, etc., and improve the ability to resist oil supply failures , safety performance improvement, and the effect of increasing support speed

Pending Publication Date: 2022-05-06
SHAANXI ZHENGTONG COAL IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most mining TBMs are single-shield open type. Although their structural forms are not completely consistent, they have been explored for a long time and there are many practical application cases. The roughly suitable construction method has been basically formed. Mining TBMs are rarely used, and the application time is short. At present, it is still in the initial stage of exploration to adapt to the construction method, and it is still in a blank stage in the history of mining TBMs. If it is too long, the control effect of the roof will be poor, especially under special geological conditions, a large amount of gangue will greatly limit the advantages of its excavation speed, and its safety performance will be greatly reduced, and the application effect is far from reaching expectations. Exploring a construction method suitable for double-shield mining TBM will be a relatively important stage in the development history of mining TBM, and is crucial to the current intelligent development of coal mines. Underground roadway construction method for shield tbm excavation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The invention provides a technical solution:

[0025] A kind of underground roadway construction method applicable to double-shield TBM excavation, comprising the following steps:

[0026] Step 1: The cycle starts, and the hydraulic pump station is turned on when there is no alarm on the alarm page, the wind, water and electricity pipelines are unblocked, and the emergency stop switches are not activated;

[0027] Step 2: Make sure that the boots support the cave wall, start the continuous belt, the supporting belt, and the main engine belt randomly in order, and after the belt rotates stably, turn on the cutter head and the reloading spray, and then start to rotate the cutter head;

[0028] Step 3: After the cutter head rotates at a high speed, according to the total station data, adjust the pressure of the upper, lower, left and right four sets of propulsion cylinders to adjust the attitude of the roadheader, so that the pitch angle and horizontal angle of the cutter ...

Embodiment 2

[0036] The invention provides a technical solution:

[0037] A kind of underground roadway construction method applicable to double-shield TBM excavation, comprising the following steps:

[0038] Step 1: The cycle starts, and the hydraulic pump station is turned on when there is no alarm on the alarm page, the wind, water and electricity pipelines are unblocked, and the emergency stop switches are not activated;

[0039] Step 2: Make sure that the boots support the cave wall, start the continuous belt, the supporting belt, and the main engine belt randomly in order, and after the belt rotates stably, turn on the cutter head and the reloading spray, and then start to rotate the cutter head;

[0040]Step 3: After the cutter head rotates at a high speed, according to the total station data, adjust the pressure of the upper, lower, left and right four sets of propulsion cylinders to adjust the attitude of the roadheader, so that the pitch angle and horizontal angle of the cutter h...

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Abstract

The invention relates to the technical field of roadway engineering, in particular to an underground roadway construction method suitable for double-shield tbm tunneling, which comprises the following steps of: firstly, circularly starting a hydraulic pump station, immediately rotating a cutter head after the stability is determined, adjusting the posture of a tunneling machine, slowly increasing a pressure knob of a thrust cylinder to a position suitable for normal cutting of the lithology, and starting tunneling; after the propelling displacement reaches the rated displacement, the propelling pressure is zeroed, then rotation of the cutterhead is stopped, step changing is prepared after the rotating speed of the cutterhead is zero, during step changing, the front shield stabilizer is stretched out, the supporting shoe is withdrawn, then the propelling oil cylinder retracts to pull the tight supporting shield to move forwards, and when the propelling displacement becomes the initial value, step changing is finished, and the next tunneling cycle is prepared to be started. By means of the structure, under the condition that the lithology of the TBM is soft and the shield supporting device cannot provide strong jacking force, additional jacking force is still provided for the whole equipment, it is ensured that the equipment can continue to advance under the condition that the lithology is slightly soft, and the working efficiency of the device is effectively improved.

Description

technical field [0001] The invention relates to the technical field of tunnel engineering, in particular to a tunnel construction method suitable for double-shield TBM excavation. Background technique [0002] At present, most mining TBMs are single-shield open type. Although their structural forms are not completely consistent, they have been explored for a long time and there are many practical application cases. The roughly suitable construction method has been basically formed. Mining TBMs are rarely used, and the application time is short. At present, it is still in the initial stage of exploration to adapt to the construction method, and it is still in a blank stage in the history of mining TBMs. If it is too long, the control effect of the roof will be poor, especially under special geological conditions, a large amount of gangue will greatly limit the advantages of its excavation speed, and its safety performance will be greatly reduced, and the application effect is...

Claims

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Application Information

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IPC IPC(8): E21D9/087E21D9/06E21D9/093E21D9/12E21D11/15E21D20/00F16N7/38
CPCE21D9/0873E21D9/0692E21D9/093E21D9/0621E21D9/12E21D11/152E21D20/003F16N7/38
Inventor 王海连郭晓胜宋晓林周长宽冯海龙陈海瑞李林埔刘浩东孟俊兵刘维强冯昌如
Owner SHAANXI ZHENGTONG COAL IND CO LTD
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