CN102797472A - Method for controlling construction posture of tunnel boring machine (TBM) in downhill inclined shaft - Google Patents

Abstract

The invention discloses a method for controlling the construction posture of a tunnel boring machine (TBM) in a high-gradient inclined shaft. The method comprises the following steps of: 1, eccentrically designing a TBM cutterhead in an eccentric structure to ensure that the center of the TBM cutterhead is 10mm higher than the center of a TBM shell; 2, arranging a sledge type traveling device at the bottom of a rear matched trailer of the TBM; and 3, by using an automatic guiding system arranged on the TBM, observing the posture of the TBM in real time to adjust construction schemes in time, and controlling the tunneling posture of the TBM. By the method, the phenomenon of bounce of the head of the TBM, which is caused by the structural self-weight of the TBM and the thrust of the rear matched trailer under the condition of moving downwards at a high gradient, can be effectively prevented, engineering risks can be reduced, the cost can be saved, and the TBM is easy to operate.

Description

A kind of descending inclined shaft TBM construction attitude control method

Technical field:

The invention belongs to a kind of construction techniques, particularly a kind of descending inclined shaft TBM construction attitude control method.

Background technology:

The TBM development machine integrates brill, digs, protects; Can effectively realize the growing up factory operation of constructing tunnel; Be state-of-the-art in the world large-scale synthesis property constructing tunnel equipment; Representing the highest level of international tunnel construction technology, be widely used in the engineering fields such as traffic, water power, mine, municipal administration, national defence in the world.

The attitude control of TBM comprises the control of shield body lift-over and the control of direction of advance.The TBM development machine in tunneling process, according to laser automatic guiding system data presented, TBM operating personnel through each subregion jack of reasonable adjustment thrust and cutterhead turns to and the attitude of TBM is adjusted in the folding and unfolding of hinged oil cylinder.

When constructing for heavy grade descending inclined shaft TBM method, TBM is stressed to be very different with level.

Above control method commonly used is adopted in the attitude control of TBM, can the phenomenon that the TBM machine is kowtowed often take place, and is difficult to the TBM attitude is controlled in the normal scope.

Summary of the invention:

The object of the invention just is to overcome the deficiency that exists in the above-mentioned prior art; And a kind of descending inclined shaft TBM construction attitude control method is provided; This method can be tackled under the heavy grade descending situation effectively, and TBM dead load and the back development machine that causes of the supporting trailer thrust phenomenon of kowtowing reduces engineering risk; Practice thrift cost, simple to operate.

As above design, technical scheme of the present invention is: a kind of heavy grade inclined shaft TBM method construction attitude control method is characterized in that: comprise the steps:

1. the TBM cutterhead is designed to eccentric structure, the center of TBM cutterhead is higher than in the TBM housing

Heart 10mm;

2. the Sledge type running gear is equipped with in supporting trailer bottom behind TBM;

3. utilize TBM to go up the automatic guiding system that is equipped with, Real Time Observation TBM attitude is in time adjusted constructure scheme, control TBM driving attitude.

The present invention has following advantage and good effect:

1, the present invention is the eccentric design of TBM cutterhead, and the center design of TBM cutterhead is higher than TBM housing center 10mm, in the TBM tunneling process, backbreaks through the upwards off-centre of cutterhead, offsets the trend that part TBM kowtows, and reduces the TBM risk of kowtowing.

2, the present invention is owing to be equipped with the Sledge type running gear bottom the supporting trailer behind TBM; Through increasing the frictional force on running gear and inclined shaft transportation road surface; Reduce the supporting trailer in back because the downward component effect of gravity; This component acts on TBM shield body top through connecting the bridge top, thereby has reduced the TBM risk of kowtowing.

Description of drawings:

Fig. 1 is that the present invention tunnels attitude control corrective measure sketch map.

Among the figure: 1, cutterhead; 2, dregs storehouse; 3, cutterhead driving device; 4, center belt conveyer; 5, People's Bank of China's air-lock; 6, anterior shield; 7, middle shield; 8, bore guide hole in advance; 9, advance oil cylinder; 10, tail shield; 11, duct piece assembling machine; 12, leading rig; 13, shield ventral brush; 14, section of jurisdiction ring; 15, dregs; 16, switching sealing-tape machine; 17, reserve the conveying worm position; 18, connect bridge; 19, the supporting trailer in back; 20, Sledge type running gear.

The specific embodiment:

As shown in Figure 1, heavy grade inclined shaft TBM method construction attitude control method, the practical implementation process is:

(1) before the TBM tunneling construction, according to inclined shaft TBM method construction characteristic, the center of design cutterhead 1 exceeds the center 10mm of TBM equipment, in the TBM tunneling process, backbreaks through the upwards off-centre of cutterhead 1, offsets the part TBM trend of kowtowing;

(2) running gear 20 of the supporting trailer 10 in back adopts Sledge type; Through increasing the frictional force on running gear 20 and inclined shaft transportation road surface; The supporting trailer vehicles in anti-back glides on the slope and the shield structure is acted on the thrust of center line top, reduces the risk that development machine is kowtowed;

(3) utilize TBM to go up the automatic guiding system that is equipped with; Real Time Observation TBM attitude is in time adjusted constructure scheme, through conventional TBM attitude control method, like adjustment cutterhead driving device 3 control cutterhead rotating speeds; Adjustment advances oil cylinder 8 control TBM thrusts, moment of torsion etc., control TBM driving attitude.

The present invention can successfully manage under the heavy grade descending situation, and TBM dead load and the back development machine that causes of the supporting trailer thrust phenomenon of kowtowing reduces engineering risk, practices thrift cost, and is simple to operate.

Claims (1)

1. a heavy grade inclined shaft TBM method construction attitude control method is characterized in that: comprise the steps:

1. TBM cutterhead off-centre is designed to eccentric structure, the center of TBM cutterhead is higher than

TBM housing center 10mm;

2. the Sledge type running gear is equipped with in supporting trailer bottom behind TBM;

3. utilize TBM to go up the automatic guiding system that is equipped with, Real Time Observation TBM attitude is timely

The adjustment constructure scheme, control TBM driving attitude.