TWI535931B - Earth pressure balanced shield machine monitoring excavated earth and sand temperature and earth pressure balanced shield method - Google Patents

Description

Earth pressure shield propulsion machine and earth pressure shield method with sandstone temperature monitoring function

The invention relates to a soil pressure shield propulsion machine and a soil pressure shield shield method with sandstone temperature monitoring function, and the earth pressure shield propulsion machine system with sandstone temperature monitoring function is even in a site where more gravel will be scattered ( Ground as a digging object, and when a digging sand containing a large and large number of pebbles is placed in the cutter chamber, the flow condition of the rotary cutter rotating chamber can be accurately inferred and Monitor so that it does not clog.

Roughly speaking, the earth pressure shield method uses the shield jack to propel the shield propeller, and at the same time, simultaneously with the propulsion, the excavation surface of the site is excavated by the rotary cutter in front of the shield propeller. The excavated sandstone is filled in a cutter chamber behind the rotary cutter and a screw machine for discharging soil from the cutter chamber.

At this time, the additive material is injected into the front surface of the rotary cutter or the cutter chamber. The added material is mixed in the excavation of the sand, and the sand is converted into a soil rich in plastic flow (freely deformable and movable) and exerting water impermeability.

The soil system is filled in the chamber of the cutter from the screw machine, and by the propulsion force of the shield jack, the earth pressure and the groundwater pressure against the excavation surface are generated in the soil (hereinafter, referred to as "excavation surface" Earth pressure").

The balance between the amount of propulsion of the shield propulsion machine and the amount of soil discharged by the screw machine is maintained to maintain the balance between the earth pressure and the earth pressure of the excavation surface, thereby continuously propelling while maintaining the stability of the excavation surface.

However, there is a problem that a "clogging" occurs in the cutter chamber due to insufficient plastic flowability of the soil, and the rotation of the rotary cutter or the advancement of the shield jack is hindered by the clogging. , resulting in a situation that cannot be promoted for a while.

Especially when the site is spread with more boulders, such as boulders with a size exceeding ψ500, and in addition to geology such as pebbles or gravel, the excavation sand loaded into the cutter chamber will contain large and large quantities. Boulders or pebbles. These pebble and the like are difficult to adhere to fine particles such as fine sand, and are therefore easily separated from the fine particles.

Therefore, when discharging the screw to the screw machine from the chamber of the cutter, fine sand or the like can be smoothly discharged, and the boulders or large pebbles will remain in the cutter chamber and will not be sent to the snail. Therefore, it is considered that the retention of such large pebbles or the like may cause clogging.

Patent Document 1 is known as a technique for preventing clogging. The "difference shield machine and chamber blockage management method" of Patent Document 1 is to monitor the fluidity of the sandstone in the chamber of the shield machine, thereby early detecting the blockage portion of the sandstone in the chamber, and the sandstone in the chamber. In order to solve the problem, in the shield machine, the gravel excavated by the cutting portion flows into the chamber from the gap of the cutting spoke, and is disposed in the hole below the partition wall by the screw machine. And discharged. A fluidity measuring device is disposed on the chamber side of the cutting spoke to measure the fluidity of the sand in the chamber. A plurality of earth pressure gauges and thermometers are arranged on the partition wall, and the earth pressure gauge measures the earth pressure change of the sandstone in the chamber. The thermometer measures the temperature of the sand in the chamber.

In the case of the sandstone clogging portion, the frictional heat of the clogging sand and the stirring portion is generated, and the heat from the cutter driving motor is not diffused to store heat, so that compared with the surrounding sandstone, The temperature of the sandstone in the blockage of the gravel will rise. In other words, the control unit determines the divided region in which the sandstone temperature is equal to or higher than the constant value as the high temperature portion, and detects the position of the divided region as the position of the sandstone plugging portion.

[Previous Technical Literature] [Patent Literature]

(Patent Document 1) Japanese Patent Laid-Open Publication No. 2008-202321

Patent Document 1 is intended to prevent the occurrence of clogging in the early stage and to prevent the clogging of the sand. When the critical condition of sand and gravel blockage is reached, the fluidity of the sandstone will be lost, so the sandstone that has been stored by the heat will stop at a fixed position, so that the blockage position can be found by measuring the temperature rise at the position. However, this stage can be considered to have almost reached the state of sandstone blockage.

On the other hand, in the stage of the smooth rotation of the rotary cutter from the flow state to the clogging, even if the sand having a temperature rise such as a frictional action can flow in the chamber, even if it is movable The temperature of the sandstone is measured, and it is impossible to determine whether its position is necessarily the actual blockage. That is, the clogging portion can be determined at the stage where the clogging is made and the sandstone cannot be moved, so that it is considered that the clogging cannot be prevented.

Further, there is a problem in that since the thermometer is placed on the partition wall where the sand and stone are easily adhered, if the sand is adhered to the portion where the thermometer is provided, the temperature of the sandstone cannot be accurately measured.

Further, when a digging sand containing a large and large amount of boulders or pebbles is loaded into the cutting chamber as described above, the dredging sand is pressed by the pebbles or the like in a state in which the rotary cutter is rotated. The portion of the void created by the withdrawal is believed to be generated throughout the chamber of the cutter, and since the portions of the gap move, disappear, or regenerate, even if a thermometer is placed on the partition to measure the temperature in the chamber of the cutter, It is considered that it is also difficult to properly determine the condition of the blockage.

The present invention has been developed in view of the above-mentioned problems, and an object of the present invention is to provide a soil pressure shield propulsion machine and a soil pressure shield method which have a sandstone temperature monitoring function, and even if a site having a large amount of gravel is used as an excavation object, When a digging stone containing a large and large number of pebbles is loaded into the cutter chamber, the flow condition in the cutter chamber rotated by the rotary cutter can be accurately inferred and monitored so as not to be generated. Blocked.

The earth pressure shield propulsion machine with the sandstone temperature monitoring function of the invention is excavated and pulverized by the rotary cutter from the excavation surface, and then is loaded by the screw machine to be inserted into the rotary cutter and divided by the partition wall. The excavated sandstone of the gravel portion of the formed cutter chamber is discharged; characterized in that the screw machine is provided with a temperature sensor for measuring the temperature of the sand and gravel of the excavated sand discharged.

The earth pressure shield propeller having the sandstone temperature monitoring function of the present invention is characterized in that the temperature sensor is disposed at a loading end of the screw machine close to the cutter chamber.

The earth pressure shield propulsion machine with the sandstone temperature monitoring function of the present invention is characterized in that it is provided with a control panel connected to the temperature sensor and capable of inputting the temperature of the sandstone and simultaneously displaying the input temperature of the sandstone .

The earth pressure shield propeller having the sandstone temperature monitoring function of the present invention is characterized in that the rotary cutter or the partition wall is provided with a chemical agent mixed in the excavation sand to the excavation surface or the cutter chamber The injection means for injecting into the room, and the monitoring panel is provided with a monitoring temperature for setting the occlusion estimation in the cutter chamber, and simultaneously outputting an incremental signal for increasing the injection amount of the medicine to the injection means. Means operation department.

The earth pressure shield propeller having the sandstone temperature monitoring function of the present invention is characterized in that the rotary cutter or the partition wall is provided with a chemical agent mixed in the excavation sand to the excavation surface or the cutter chamber An injection means for injecting into the room, and the control panel is provided with an injection means for setting an increase signal for estimating the amount of injection of the medicine to the injection means while setting the monitoring temperature for estimating the clogging in the cutting chamber. And the control panel outputs an increment signal to the injection means from the injection means operating portion based on the measured degree of the sandstone temperature exceeding the monitoring temperature.

The earth pressure shield method of the present invention is characterized in that the earth pressure shield propeller is provided with the above-mentioned sandstone temperature monitoring function; and the method includes: no more than 20% of the sandstone portion having a particle diameter of less than 2 mm; When the gravel portion having a particle size of 2 mm or more and more than 80% of the ground is excavated, the monitoring temperature of the plugging in the cutter chamber is compared with the temperature of the sand and stone measured by the temperature sensor. And the step of injecting the medicament into the excavation surface or the cutter chamber according to the degree that the sandstone temperature exceeds the monitoring temperature, and injecting the medicament into the chamber step.

The earth pressure shield propulsion machine and the earth pressure shield method method with the sandstone temperature monitoring function of the present invention use the excavation sandstone containing a large and large number of pebbles to be excavated, even if the site is scattered with more gravel. In the case of the cutter chamber, it is also possible to accurately infer the flow condition in the cutter chamber in which the rotary cutter rotates and monitor it so as not to cause clogging.

Hereinafter, a preferred embodiment of the earth pressure shield propulsion machine having the sandstone temperature monitoring function of the present invention will be described in detail with reference to the accompanying drawings. Fig. 1 is a schematic side cross-sectional view showing a soil pressure shield propulsion machine 1 having a sandstone temperature monitoring function according to the present embodiment, and Fig. 2 is a front view showing the rotary cutter 2 of the earth pressure shield propulsion machine 1.

The earth pressure shield propulsion machine 1 is mainly composed of a surface plate 3 which is hollow cylindrical body shape; a partition wall 4 which is disposed on the front end side of the surface plate 3; and a rotary cutter 2 which is spaced apart from the partition wall 4 Rotary drive is performed on the front side by a rotary driving means (not shown) to excavate the excavation face Z of the ground plate; the cutter chamber 5 is formed between the rotary cutter 2 and the partition wall 4, and the excavation is carried out. a sanding device; a stirring device (not shown) disposed in the cutter chamber 5 to mix and mix the loaded sand and the injected medicament; the shield jack 7 is disposed in a manner opposite to the partition wall 4 In the surface plate 3, a thrust force is obtained which obtains a reaction force by the ring piece 6 to advance the rotary cutter 2 together with the surface plate 3; and a screw machine 8 which penetrates the partition wall 4 so that the loading end portion 8a is located in the cutter cavity In the chamber 5, the discharge end portion 8b is extended obliquely upward toward the rear of the surface plate 3, thereby discharging the sand from the inside of the cutter chamber 5. Further, the following vehicle 9 behind the shield propulsion machine 1 is provided with a cab 10 of the shield propulsion machine 1 so that the driver can perform the driving control of the shield propulsion machine 1 from the cab 10.

The earth pressure shield propulsion machine 1 of the present embodiment is particularly preferably applied to an excavation face Z of a site composed of a gravel or pebble layer which may be mixed with the pebbles of the boulders which are not suitable for loading into the cutter chamber 5. The situation of excavation. Of course, it can also be applied to gravel or pebble layers, usually gravel layers, etc., which do not contain such boulders.

The rotary cutter 2 is constituted by a spoke type as shown in FIG. The rotary cutter 2 is composed of a hub portion 12 located at the center of the rotary cutter 2 and mounted with a center drill 11; six spoke portions 16 extending radially from the hub portion 12 toward the periphery of the rotary cutter 2. Further, various drills 13, 14 or a roller cutter 15 are attached; an intermediate ring 17 connects the intermediate portions of the spoke portions 16; and an outer peripheral ring 18 connects the front ends of the spoke portions 16.

The intermediate ring 17 is provided with a restricting projection 19 for controlling the large-sized boulder X or pebbles or the like located substantially in the middle of the spoke portion 16 and the spoke portion 16, so as to be loaded from the spoke portion 16 to the cutter chamber 5 Inside. That is, in the rotary cutter 2, the intermediate portion 17 having the spoke portion 16 and the restricting projection 19 and the outer peripheral ring 18 are defined around the hub portion 12 to form the bobbin loading restriction region R.

The earth pressure shield method adds the medicament to the sand stone excavated by the rotary cutter 2, and stirs and mixes it by a stirring device, thereby converting the excavated sandstone into a soil having plasticity and water impermeability. Further, the soil is filled in the cutter chamber 5 and the screw machine 8, and the earth pressure is generated by pressurizing the soil filled in the cutter chamber 5 by the propulsive force of the shield jack 7, and borrows The earth pressure is used to counter the earth pressure of the excavation surface, so that the excavation surface Z can be stabilized.

When the earth pressure shield propulsion machine 1 is propelled, in order to maintain the stability of the excavation surface Z, the propulsion is performed in the following manner: for example, the rotation speed of the rotary cutter 2 is kept constant, and the extension speed of the shield jack 7 is adjusted or The rotational speed of the screw machine 8 and the earth pressure in the cutter chamber 5 measured by the earth pressure gauge (not shown) provided in the partition wall 4 are always maintained at a constant pressure.

The earth pressure shield propulsion machine 1 of the present embodiment is provided with a soil adjustment means for advancing the excavation surface Z of the site in which the fine sand or the coarse sand, the gravel, and the pebbles and the gravel X are scattered, The state of the soil in the cutter chamber 5 can be rationalized.

The soil adjusting means includes: the first injection means 20 is disposed at an appropriate position of the spoke portion 16 or the hub portion 12 of the rotary cutter 2, and injects a medicine into the excavation surface Z in front of the rotary cutter 2; the second injection means 21, The medicine is injected into the cutter chamber 5 in the vicinity of the central portion of the partition wall 4, and the third injection means 22 is disposed at an appropriate position on the peripheral edge portion of the partition wall 4, toward the periphery of the surface plate 3 or the cutter chamber 5 Inject the drug into the inside.

The first and third injection means 20 and 22 are made of a clay material such as a bentonite-based additive. The second injection means 21 injects a bubble material. The specific configuration of the injection means 20, 22 for injecting the mud material and the injection means 21 for injecting the bubble material can be known from the prior art.

Further, in the present embodiment, the injection means 20, 22 for injecting the clay material and the injection means 21 for injecting the bubble material are separately disclosed, but the clay material and the bubble material may be used as the injection port ( It is not shown in the vicinity, or is mixed with the injection time of the mud material and the injection time of the bubble material, and is used as the injection means 20 and 22 for the mud material and the injection means 21 for the bubble material. That is, the clay material and the bubble material can be injected from all of the injection means 20 to 22.

The sand containing the gravel portion of the excavation surface Z which has just been excavated and crushed by the rotary cutter 2 is caused by the rotation of the rotary cutter 2 and the first injection means 20 from the rotary cutter 2 to the excavation surface. Z is poured into a mud or bubble material, stirred and mixed, and loaded into the cutter chamber 5 on one side. Further, the sand containing the gravel portion which is excavated and pulverized from the excavation surface Z by the rotary cutter 2 and loaded into the cutter chamber 5 is the second in the cutter chamber 5 and from the partition wall 4. The third injection means 21, 22 are injected into the cutter chamber 5 as a mud or bubble material, and are stirred and mixed.

That is, the gravel containing the gravel portion excavated by the rotary cutter 2 is placed in the excavation face Z position and the cutter chamber 5 before the loading to the screw machine 8 as the mud material and the bubble material. Mix and mix.

In the earth pressure shield propulsion machine 1 of the present embodiment, a sandstone temperature monitoring means is provided to monitor the blockage of the sand and gravel in the cutter chamber 5. The clogging tendency of sand and gravel is estimated by causing the temperature of the sand to rise due to the frictional heat retained by the sand or the like being stirred.

The sandstone temperature monitoring means is constituted by a temperature sensor 23 which is disposed inside the screw machine 8, preferably at the loading end of the screw machine 8 which is disposed close to the cutter chamber 5. The inside of 8a, and directly measures the temperature of the sand which is discharged from the screw machine 8 and has just been loaded with sand from the cutter chamber 5. A control panel 24 is connected to the temperature sensor 23, and the control panel 24 is disposed in the cab 10 for inputting the temperature of the sandstone measured by the temperature sensor 23, and is displayed for the driver to recognize. The sandstone temperature.

Basically, by allowing the driver to recognize the sandstone temperature measured by the temperature sensor 23 via the control panel 24, the sandstone temperature monitoring function can be utilized, so that the driver can drive the operation according to the displayed sandstone temperature. Earth pressure shield drive propeller 1.

In the present embodiment, the temperature sensor 23 is provided in the screw machine 8 for uniformly and stably transferring the dredged sand, and is not provided for the agitating flow to move the position of the dredged sand, or because it contains a large amount of large The gravel portion or the like causes the void portion to move, disappear, or regenerate in the cutter chamber 5, so that the sandstone temperature can be stably measured.

Moreover, the temperature sensor 23 is disposed at the loading end portion 8a of the screw machine 8, and the sandstone temperature of the excavating sand which is sequentially fed from the cutter chamber 5 to the screwing machine 8 can reflect the cutter chamber 5 The temperature data of the flow state of the sandstone inside, and the temperature of the sandstone is an instant measurer. Further, since the screw machine 8 transports the excavated sand and discharges it, there is less possibility of adhering the sand to the installation position of the temperature sensor 23, and the temperature of the sand can be accurately measured.

The sandstone temperature detected by the temperature sensor 23 is used for manual control by the driver. The control panel 24 is provided with an injection means operating portion 24a that sets the monitoring temperature for estimating the clogging in the cutter chamber 5, and displays the monitored temperature on the control panel 24 while being manually operated by the driver. In operation, the injection means 20 to 22 output an incremental signal for increasing the amount of injection of the mud material. By injecting into a clay material, the plastic flowability of the sand in the cutter chamber 5 can be improved.

Further, the temperature of the sandstone detected by the temperature sensor 23 can also be used for automatic control of the control panel 24. The control panel 24 performs a step of comparing the monitored temperature with the measured sandstone temperature, and via the comparison, when the sandstone temperature exceeds the monitoring temperature, the self-injection means operating portion 24a is performed on the injection means 20-22. The step of outputting the incremental signal to increase the amount of injection of the mud material.

Regarding the monitoring temperature, depending on the state of the ground plate or the specifications of the shield propulsion machine, it is preferable to correct the temperature set in advance in each section based on the data obtained in the section in the initial stage of advancement.

In the present embodiment, the control panel 24 is provided with not only the monitoring temperature (M ° C) as a reference for incrementing the mud material but also the first threshold temperature for the stepwise increment ( M ° C + α ° C). When the temperature of the sand measured by the temperature sensor 23 is equal to or lower than the monitoring temperature (X ° C), it can be inferred that "the plastic flowability of the sand and stone is good, and the stirring property in the cutter chamber 5 is good".

When the temperature of the sand exceeds the monitoring temperature and is below the first threshold temperature (X°C+α°C), it can be inferred that “the plastic flowability of the sandstone tends to decrease, and the sand in the cutter chamber 5 is According to the estimation, the feed control for improving the plasticity in the cutter chamber 5 is operated by the self-injection means by the driver's manual control or automatic control of the control panel 24. The incremental signal outputted by the portion 24a is used to increase the injection means 20 to 22 as the amount of the mud to be injected.

Further, when the sandstone temperature is equal to or higher than the first threshold temperature (X°C+α°C), it can be inferred that “the plasticity of the sandstone is insufficient, and there is sand generated in the cutter chamber 5 According to the estimation, the feed control is used to eliminate the clogging tendency in the cutter chamber 5, and is controlled by the driver's manual control or automatic control of the control panel 24. The incremental signal output from the operation unit 24a is injected to further increase the injection amount of the sizing agent by the injection means 20 to 22.

Further, the earth pressure shield propulsion machine 1 of the present embodiment is provided with an anti-discharge means. The anti-spraying means is a screwing machine 8 that can transport a large-diameter gravel or the like as a screwing machine 8, and is configured to be connected to a drain pipe 25 capable of forming a length of a piston region which is a soil-proof portion and which is a seepage prevention region. The discharge end 8b of the belt screw machine.

In the earth pressure shield propulsion machine 1 of the present embodiment, since the large gravel obtained by pulverizing the boulders X is contained in the soil discharge, the screw machine attached to the shaft is liable to be clogged by the gravel or the like, so that it is generally used. Belt screw machine 8.

The earth discharge pipe 25 is extended to the earthmoving and unloading carriage 26 assembled to the subsequent carriage 9 by the discharge end portion 8b of the self-contained screw machine 8, and the earth discharged from the screw machine 8 is discharged to the soil removal truck 26. The earth drain pipe 25 forms a piston region in which the seepage resistance can be obtained by the pressure loss when the soil is moved inside, thereby preventing the sand from being discharged due to the groundwater pressure or the like.

Next, the earth pressure shield propulsion machine 1 of the above-described embodiment will be exemplified, and the earth pressure shield method of the present embodiment will be described. The earth pressure shield propulsion machine and the earth pressure shield method having the sandstone temperature monitoring function of the present invention will specifically have the particle size accumulation curve shown in FIG. 3 (fine particles having a particle diameter of less than 2 mm (sand stone) Partially) The development of the site of gravel (gravel part) with a particle size of 2 mm or more and more than 80% (more than 80%) has been developed in the tunnel in the suburbs of Da Nan Bay, Taiwan. .

The earth pressure shield method is basically a method of adding a chemical to the self-cutter chamber 5 filled with the soil of the screw machine 8, and after ensuring the plasticity or impermeability, the propulsion force of the shield jack 7 is The earth pressure which can compete with the earth pressure of the excavation surface is generated, and the earth pressure is used to maintain the stability of the excavation surface Z, and the rotation of the screw machine 8 for discharging the soil from the cutter chamber 5 is appropriately adjusted. The speed and the extension speed of the shield jack 7 are continuously advanced.

In the case of the earth pressure shield propulsion machine 1 , the earth pressure shield method of the present embodiment uses a bentonite additive or the like as a mud material and a bubble material as a medicine, and the medicines are from the first to the third The injection means 20 to 22 are injected into the excavation face Z in front of the rotary cutter 2, and are injected into the cutter chamber 5 again.

The earth pressure shield method of the present embodiment is intended to excavate an excavation surface Z of a site composed of a gravel or a pebble layer which may be mixed with the pebbles of the boulders which are not suitable for loading into the cutter chamber 5 The clay material represented by the bentonite-based additive material is generally not only has the effect of improving the plasticity or impermeability of the sandstone, but also contains the crushed boulders. The excavated sandstone of the gravel part such as gravel or pebbles obtained by X may also be wrapped together with the excavated sandstone, thereby suppressing the separation of the gravel part from the gravel, thereby improving the gravel and gravel parts. One body. Thereby, it is possible to suppress the difficulty of the bubble material, that is, to suppress the separation action such as adhesion and adhesion between the particles of the sand stone.

In addition, when the bubble material is used in combination with the above-mentioned clay material, it is generally used to multiply the clay material as a fine particle part in the promotion of the plasticity or water impermeability which is generally understood. The plasticity or impermeability of the bearing effect can suppress the adhesion of the gravel containing the gravel portion to the rotary cutter 2 or the partition wall 4, and at the same time, by the buffering action of the bubble material which cannot be obtained as a mud material. Increasing the compressibility of the excavated sandstone or the mud material, thereby preventing the gravel portion from rolling in the cutter chamber 5 or the screw machine 8, and suppressing the soil by the buffering action even if a rolling movement occurs The pressure has changed dramatically.

Therefore, by using and using the mud material and the bubble material as a chemical agent, the earth pressure can be stabilized, so that the excavation surface Z can be kept stable, and at the same time, the gravel portion of the screw machine 8 can be smoothly discharged to prevent clogging. And can also prevent it from being ejected.

In this manner, when the sand containing the gravel portion mixed with the mud material and the bubble material and the agitating portion is loaded from the cutter chamber 5 to the screw machine 8 to perform the soil discharge, the temperature set inside the screw machine 8 is set. The sensor 23 directly measures the sandstone temperature of the sand conveyed in the screw machine 8, and the measured sandstone temperature is input to the control panel 24 for display. When the measured sandstone temperature is below the monitoring temperature, there is no tendency for the sandstone to clog in the cutter chamber 5, so that the driving operation can be continued in the same driving operation as before.

On the other hand, when the measured sandstone temperature exceeds the monitoring temperature and is below the first threshold temperature, the plastic flowability of the sandstone will decrease, and there is a tendency to block, so that the shield machine 1 will continue. In the driving operation, the injection means 20 to 22 are increment-injected from the injection means 20 to 22, and the injection means 20 to 22 can be incrementally injected into the excavation face Z or the cutter chamber 5 as a mud material.

The increment of the clay material continues until the sandstone temperature reaches below the monitored temperature. When the temperature of the sandstone is below the monitoring temperature, it can be inferred that the plastic flow is restored and the clogging tendency is eliminated, so that the output of the incremental signal can be ended, and the driving operation of the shield machine 1 can be continued in this state.

Further, even if the mudstone is increased by the above operation, when the measured sandstone temperature is still above the first threshold temperature, the plastic flow of the sandstone is insufficient, and there is a possibility that a clogging portion may be generated. Therefore, in the state in which the driving operation of the shield machine 1 is continued, the self-injection means operation unit 24a outputs the incremental signals for increasing the injection amount of the mud material to the injection means 20 to 22, thereby The self-injection means 20 to 22 are further incrementally injected into the mud material.

The increment of the clay material continues until the sandstone temperature reaches below the monitored temperature. If the temperature of the sandstone is below the monitoring temperature, it can be inferred that the plasticity will be restored and the blockage will be eliminated, so that the output of the incremental signal is ended and the driving operation of the shield machine 1 is continued. At this time, the injection amount may be reduced at a stage where the sandstone temperature reaches the first threshold temperature or lower.

Further, the above description is performed while the driving of the shield machine 1 is continued, and the incremental injection of the mud material is performed, but the driving may be temporarily stopped and the incremental injection may be performed.

On the other hand, even if the temperature of the sandstone measured by the temperature sensor 23 tends to rise even if the further incremental operation is performed, the driving operation of the shield machine 1 is interrupted and inspection and maintenance are performed.

The earth pressure shield propulsion machine 1 and the earth pressure shield method having the sandstone temperature monitoring function of the present embodiment provide the temperature sensor 23 in a screw machine 8 that uniformly and stably transfers the dredged sand, instead of The crucible can be stably measured by being placed in the cutter chamber 5 which moves or disappears or reoccurs the void portion by moving the position of the excavation sand due to the agitation flow, or containing a large amount of large gravel portions or the like. temperature.

Further, the temperature sensor 23 is disposed near the loading end portion 8a of the screwing machine 8 of the cutter chamber 5, and the sandstone temperature of the excavating sand which is sequentially fed from the cutter chamber 5 to the screwing machine 8 The temperature data reflecting the flow state of the sand in the cutter chamber 5 is measured, so that the temperature of the sand can be measured immediately.

Further, since the screw machine 8 transports the excavated sand and discharges it, even if the temperature sensor 23 is installed inside the screw machine 8, the possibility of retaining the sand at the position of the temperature sensor 23 is adhered. It is also less, so the temperature of sand and gravel can be accurately measured.

In addition, even when the excavation surface Z of the ground plate composed of the gravel or the pebble layer of the pebbles which may be mixed with the boulders X is excavated as an object, the excavation sand is pressed back by the pebbles or the like in the cutter chamber 5 In the case where it is difficult to accurately measure the temperature of the sandstone in the gap portion generated by the stone, even in the case of the screw machine 8, even if the gravel containing the gravel portion can be transferred substantially uniformly and stably, it is possible By arranging the temperature sensor 23 in the screw machine 8, the temperature of the monitoring sandstone is measured, and the flow condition in the cutter chamber 5 is accurately inferred, so that even if there is a lot of such boulders in the excavation, In the case of the ground, it is possible to surely prevent the occurrence of clogging in the cutter chamber 5 or the like.

Further, since the sandstone temperature measured by the temperature sensor 23 is input to the control panel 24 and displayed, the driver can appropriately perform the driving operation of the shield machine 1. Further, the control panel 24 is provided with an injection means operating portion 24a for setting the monitoring temperature and simultaneously outputting the incremental signal for increasing the amount of the mud to the injection means 20 to 22, so that the monitored temperature and the measured sand can be used. The correlation of the stone temperature allows the mud to be incremented, whereby clogging can be accurately prevented.

Further, since the step of comparing the monitored temperature with the sandstone temperature is performed in accordance with the automatic control corresponding to the control panel 24, and the incremental injection step of performing the incremental injection as the mud material according to the degree that the sandstone temperature exceeds the monitored temperature is performed. The configuration makes it possible to automate the anti-clogging control of the shield machine 1. Of course, even if it is manually controlled, these steps can be performed to achieve an anti-clogging situation.

1. . . Earth pressure shield drive (slot shield machine)

2. . . Rotary cutter

3. . . Surface plate

4. . . Partition wall

5. . . Cutter chamber

6. . . Ring piece

7. . . Diffuse shield jack

8. . . Screw machine

8a. . . Loading end

8b. . . Discharge end

9. . . Follow-up trolley

10. . . Cab

11. . . Center drill

12. . . Hub

13, 14. . . drill

15. . . Roller cutter

16. . . Spoke

17. . . Intermediate ring

18. . . Peripheral ring

19. . . Restricted protrusion

20~22. . . Injection means

twenty three. . . Temperature sensor

twenty four. . . control panel

24a. . . Injection means operation department

25. . . Drain pipe

26. . . The bandits moved out of the trolley

R. . . Boulder loading limit area

X. . . Boulder

Z. . . Excavation face

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic side cross-sectional view showing a preferred embodiment of a earth pressure shield propulsion machine having a sandstone temperature monitoring function according to the present invention.

Fig. 2 is a front view of the rotary cutter of the earth pressure shield propeller having the sandstone temperature monitoring function shown in Fig. 1.

Fig. 3 is a graph showing the particle size accumulation curve of the earth pressure shield propulsion machine in which the sandstone temperature monitoring function of the present invention is preferably applied.

1. . . Earth pressure shield drive (slot shield machine)

2. . . Rotary cutter

3. . . Surface plate

4. . . Partition wall

5. . . Cutter chamber

6. . . Ring piece

7. . . Diffuse shield jack

8. . . Screw machine

8a. . . Loading end

8b. . . Discharge end

9. . . Follow-up trolley

10. . . Cab

11. . . Center drill

21, 22. . . Injection means

twenty three. . . Temperature sensor

twenty four. . . control panel

24a. . . Injection means operation department

25. . . Drain pipe

26. . . The bandits moved out of the trolley

X. . . Boulder

Z. . . Excavation face

Claims (5)

An earth pressure shield propulsion machine with a sandstone temperature monitoring function, which is used for excavating and pulverizing from an excavation surface of a ground by a rotary cutter, and then loading the inclusion to the rotary cutter by using a screw conveyor Excavating sand from the gravel portion of the cutter chamber formed by the partition wall at the rear is discharged; wherein, in order to monitor the blockage in the cutter chamber, the screw machine is adjacent to the cutter chamber The loading end is provided with a temperature sensor for measuring the temperature of the sand and gravel for excavating the sandstone, and the sandstone temperature of the excavating sandstone reflects the flow state of the sandstone in the cutter chamber, and the excavating sandstone system is Since the cutter chamber has just been loaded to the screwer. An earth pressure shield propulsion machine having a sandstone temperature monitoring function according to the first aspect of the patent application, wherein the utility model comprises a temperature sensor connected to the temperature sensor and capable of inputting the sandstone temperature and simultaneously displaying the input sandstone Temperature control panel. An earth pressure shield propulsion machine having a sandstone temperature monitoring function according to the second aspect of the patent application, wherein the rotary cutter or the partition wall is provided with an agent mixed with the excavation sand to the excavation surface or Injecting means for injecting into the cutter chamber, and the control panel is provided with an increase in the amount of increase in the amount of injection of the medicament for setting the monitoring temperature for estimating the blockage in the cutter chamber and simultaneously outputting the injection means The signal injection means operation unit. An earth pressure shield propulsion machine having a sandstone temperature monitoring function according to the second aspect of the patent application, wherein the rotary cutter or the partition wall is provided with an agent mixed with the excavation sand to the excavation surface or The injection means for injecting into the cutter chamber, and the control panel is provided with an increase signal for setting a monitoring temperature for estimating the clogging in the cutting chamber and outputting an injection amount for injecting the medicine to the injection means. The injection means operation unit, wherein the control panel outputs an increment signal to the injection means from the injection means operation unit based on the measured degree of the sandstone temperature exceeding the monitoring temperature. A soil pressure shield method is a soil pressure shield propeller with a sandstone temperature monitoring function according to item 1 of the patent application scope; and is characterized in that it has: a part of sandstone having a particle diameter of less than 2 mm When more than 20% of the gravel portion having a particle diameter of 2 mm or more and more than 80% of the ground is excavated, the monitoring temperature of the clogging in the cutter chamber is estimated and the temperature of the sand and stone measured by the temperature sensor a step of comparing; and, according to the degree that the sandstone temperature exceeds the monitoring temperature, an injection means for injecting the agent mixed with the excavating sand into the excavation surface or the cutter chamber, thereby increasing the dosage of the medicament The step of injecting.