WO2022044154A1 - 多連式油圧ビッガー割岩工法 - Google Patents

多連式油圧ビッガー割岩工法 Download PDF

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Publication number
WO2022044154A1
WO2022044154A1 PCT/JP2020/032152 JP2020032152W WO2022044154A1 WO 2022044154 A1 WO2022044154 A1 WO 2022044154A1 JP 2020032152 W JP2020032152 W JP 2020032152W WO 2022044154 A1 WO2022044154 A1 WO 2022044154A1
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Prior art keywords
bigger
rock
hydraulic
drilling
wedge
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Application number
PCT/JP2020/032152
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English (en)
French (fr)
Japanese (ja)
Inventor
明久 石本
哲也 飯田
時寛 金田
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株式会社石本建設
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Application filed by 株式会社石本建設 filed Critical 株式会社石本建設
Priority to JP2021571962A priority Critical patent/JP7176139B2/ja
Priority to PCT/JP2020/032152 priority patent/WO2022044154A1/ja
Publication of WO2022044154A1 publication Critical patent/WO2022044154A1/ja

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    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C37/00—Other methods or devices for dislodging with or without loading
    • E21C37/02—Other methods or devices for dislodging with or without loading by wedges

Definitions

  • the present invention relates to a hydraulic bigger split rock construction method, and particularly to a multiple hydraulic bigger split rock construction method for improving the construction efficiency by using a plurality of biggers at the same time.
  • a Bigger rock splitting method using a Bigger rock breaking machine (see FIG. 4 (2)) in which a wedge-shaped wedge liner is inserted and spread by a wedge to generate cracks around the perforation is known.
  • the Bigger split rock method is often adopted instead of the blasting method. ..
  • This type of rock splitting method has conventionally been carried out by sequentially repeating a process consisting of a bedrock measurement process, a drilling process, a Bigger split rock process, secondary crushing and removal of crushed rock to a predetermined depth, and in particular, the Bigger split rock process. Then, a single bigger is used as shown in (a) to (c) of FIG. 4 (2) to gradually break the bigger hole along the free surface side. Therefore, in order to improve work efficiency, ultra-large hydraulic rock breaking machines (Bigger HRB1000 and Bigger HRB1700) have been used.
  • the conventional rock breaking method has technical problems described below. That is, in the conventional split rock construction method, the above-mentioned process is repeated, but even if the drilling is performed to a predetermined depth in the first drilling step, the crushed rock enters the drilling and is deposited at the bottom of the drilling. It became difficult to remove the crushed rock, and if it was left as it was, the subsequent wedge split rock would not be formed, so drilling was performed each time before the Bigger split rock.
  • such a method has a problem that the work is mixed, the construction efficiency is lowered, and the construction cost is high.
  • a drilling process of forming a drilling of a predetermined depth in a hard material such as bedrock or concrete, and a rust are placed in the drilling.
  • the Bigger split rock process that causes cracks around the perforation, the secondary crushing step that crushes the area around the cracked perforation with a crusher such as a ripping or breaker, and the crushing that is crushed by the secondary crushing step.
  • the removal treatment step of removing the substance is performed, the sedimentation of the crushed material is prevented and suspended in the perforation before the Bigger split rock step, or the sedimentation of the crushed material is predetermined.
  • Patent Document 1 A method of filling a highly viscous fluid that blocks time is proposed (Patent Document 1).
  • the working surface of the wedge liner is divided in the longitudinal direction, and the wall thickness of each working division is devised. It has been proposed that the wedge liner is less likely to be bent or broken (Patent Document 2).
  • a drilling process of forming a plurality of drillings of a predetermined depth at a predetermined location on a bedrock with a drilling machine such as a crawler drill, and a bigger wedge liner inserted into the drilling are expanded by pushing a hydraulic wedge.
  • the hole spacing (D) and / or the resistance line (W) of the standard drilling distribution is set to a dimension of 1.5 times or more and drilled.
  • a plurality of Biggers are used at the same time, and a Bigger wedge liner is inserted into at least a pair of perforations adjacent to each other on the Bigger free surface (slit) side, and the spreading direction thereof is set to a free surface. Adjusting to be perpendicular to each other, pushing each wedge at the same time or substantially at the same time with a driving force such as hydraulic pressure, and simultaneously spreading the wedge liner in the adjacent drilling to generate cracks between the adjacent drilling. It is in the featured multiple hydraulic bigger split rock construction method.
  • a wedge liner of a bigger is inserted into at least a pair of perforations adjacent to each other on the free surface (slit) side of the bigger, and the spreading direction thereof is adjusted so as to be perpendicular to the free surface, and a plurality of biggers are used. Since the rocks are split at the same time or substantially at the same time, the cracks from the drilling are likely to cooperate and exert a synergistic effect. Therefore, the perforation distribution can be 1.5 times or more, preferably 2.0 times or more the standard perforation spacing (D) and / or resistance line (W), even if the perforation depth is the same. Work efficiency more than double can be easily obtained.
  • the hole spacing (D) of the predetermined drilling distribution is 0.5 m for the Bigger HRB1000 alone, the holes are formed in the Bigger HRB1000 dual system (see FIGS. 5 and 6) as in the present invention.
  • the interval (D) can be doubled 1.0 m or tripled 1.5 m. Therefore, according to the construction method of the present invention, the floor area ratio of rock drilling can be simply increased to at least 2 times or 3 times.
  • the timing of spreading the wedge liner “substantially at the same time” means that when at least a pair of biggers are used, the progress of the cracking process of one bigger is observed and the other bigger is used. It means that the cracking process may be delayed, and it also includes the case where the adjacent rock breaking processes cooperate to adjust the time difference so that the cracks run.
  • the slit hole is split before the bigger hole is split to secure a slit (free surface), but efficient work efficiency can be obtained by combining with the multiple hydraulic bigger split rock construction method of the present invention.
  • the construction method of the present invention is preferably carried out by using a multiple hydraulic rock breaking device in which a plurality of biggers are arranged in a row at the tip of an operating arm of an excavator such as a hydraulic excavator.
  • a rock breaking device balances a horizontal hanger 20 attached to the tip of an operation arm such as a hydraulic excavator 10 and the horizontal hanger 20 at equal distances to the left and right from the suspension center 21.
  • a bigger 30 is attached to a plurality of pairs of biggers 30 and 30, a twist reduction bar 24 attached in parallel to a connecting portion between the tip of the operation arm 11 and the horizontal hanger 20, and a horizontal hanger 20.
  • a rotatable mounting bracket 25 such as a swivel that rotatably attaches around the bigger axis
  • an operation handle 26 that adjusts the spreading direction of the tip wedge liner 31 of the bigger 30 with respect to the free end face, and is provided on both wings of the horizontal hanger 20.
  • the lower ends of the paired Biggers 30 and 30 attached in a well-balanced manner are guided to the adjacent Bigger holes drilled in parallel with the free end face of the split rock, and the wedge liner 31 of each Bigger 30 is guided by the operation handle 26. It is possible to insert the wedges in a control so that the spreading direction is substantially perpendicular to the free end face, push each wedge at the same time by hydraulic pressure, and push the wedge liner in the adjacent Bigger hole in parallel.
  • FIG. 8 (b) (a) split rock state, (b) 10th split rock depth interval, (c) drilling interval, and (d) 20th split rock depth interval in the Bigger method using the HRB1000 Bigger device for split rock. It is a photograph showing the measurement state.
  • FIG. 8 (b) (a) split rock state, (b) 10th split rock depth interval, (c) drilling interval, and (d) 20th split rock depth interval in the Bigger method using the HRB1000 Bigger device for split rock. It is a photograph showing the measurement state.
  • FIG. 8 (c) shows (a) 10th split rock depth, (b) 20th split rock depth, (c) split rock condition, and (d) secondary crushing status in the Super Bigger method using the HRB1700 Bigger device for split rock. It is a photograph.
  • FIG. 8 (d) Multiple-type HRB1000 Bigger device for split rocks (a) Drilling interval, (b) Split rock state (1.5 m interval), (c) Crack state (1) in the multiple-type Bigger method. It is a photograph showing the measurement state of (.5 m interval) and (d) the split rock depth of 1.0 m (1.5 m interval).
  • It is a table which shows the test result of the super bigger method of FIG. 11 is a table showing the results of the first test of the multiple-type bigger method according to the present invention in FIG. 11.
  • 11 is a table showing the results of the second test of the multiple-type bigger method according to the present invention in FIG. 11.
  • a rock breaking capacity test was conducted.
  • the rock splitting step (b) the single HRB1000 and the single HRB1700 were compared with the HRB10002 series in the present invention.
  • the debris removal step (c) a large breaker was used to remove the debris and confirm the cracked rock depth.
  • (1) drilling step drilling is performed at a pitch and a drilling depth determined in the measured area.
  • the standard drilling diameter and hole length for the HBR-1000 is ⁇ 100 mm x 1.5 m, and for the HBR-1700, ⁇ 125 mm x 2.5 m (see Fig. 4 (1) (a)).
  • the standard arrangement of drilling is staggered (see Fig. 4 (1) (b)), and the intervals are set appropriately according to the quality and hardness of the bedrock.
  • the hole spacing (D) and / or the resistance wire (W) is set to 1.5 times or more, preferably 2.0 times or more and 3.0 times, particularly the hole spacing (D).
  • FIG. 5 is a perspective view of a specific example of the multiple hydraulic bigger breaking rock device according to the present invention, in which a pair of HBR-1000 biggers 30 and 30 are placed at the tip of an operation arm 11 of a large hydraulic excavator 10 via a horizontal hanger 20. Shows a well-balanced suspended state.
  • a pair of biggers 30 and 30 are attached to the tip of the hydraulic operation arm 11 of the hydraulic excavator 10, and the wedge liner 31 of the bigger is simultaneously inserted at a predetermined position of the bedrock by a drilling machine such as a crawler drill. It is inserted into a perforation of a predetermined depth formed in.
  • the operation of the operation arm 11 of the hydraulic excavator 10 is guided to the adjacent drilling by an assistant (not shown) grasping the operation handle 32 attached to the body of the bigger 30. Then, the wedge liner in the perforation is expanded by pushing the wedge under hydraulic pressure to generate cracks (primary crushing) around the perforation.
  • the horizontal hanger 20 is swingably attached to the tip of the operation arm 1 of the hydraulic excavator 10.
  • the horizontal hanger 20 is composed of a pair of wing portions 21a and 21a, and the wing portions have a plurality of mounting holes 21b extending at both ends at intervals of 100 mm from the center.
  • the pair of biggers 30 and 30 are hung and attached via the swivel 22 while being balanced equidistant to the left and right from the hanging center 21 of the horizontal hanger via the bolt-tightened attachment 21c.
  • the center of the horizontal hanger 20 is attached to the tip of the operating arm of the hydraulic excavator 10 via the arm attachment 23, but the center of the arm attachment 23 and the horizontal hanger 20 is supported by a twist reducing lever 24 having a bent portion 24a. Will be done.
  • the middle abdomen of the biggers 30 and 30 is maintained at a predetermined interval by a collision prevention lever 40 that can be adjusted to the drilling interval.
  • the pair of Biggers 30 and 30 can relatively easily insert the respective wedge liners 31 into the adjacent Bigger holes without being greatly twisted.
  • the wedge liners in the adjacent Bigger holes are simultaneously controlled to be pushed vertically with respect to the free surface of the bedrock. That is, the plurality of biggers 30 and 30 are suspended from the operation arm 11 of the hydraulic excavator via the horizontal hanger 20 in a well-balanced manner, but the horizontal hanger 20 is suspended from the operation arm via the connector 24 while preventing twisting.
  • the tip of the wedge liner 31 can be inserted into the bigger hole at the entrance of the predetermined bigger hole by operating the hydraulic excavator.
  • the pair of biggers 30 and 30 are rotatably suspended around the bigger axis with respect to the horizontal hanger 20 via the swivel 22, the pair of biggers 30 and 30 push the wedge liner in the spreading direction with respect to the free end face.
  • the directions are set to be vertical and spread parallel to each other. Therefore, the wedge liner 31 is adjusted so that the cracks cooperate with each other in the adjacent Bigger holes.
  • the rock breaking capacity test (a) was performed in the first stage and the construction capacity test (b) was performed in the second stage.
  • the cracking capacity test (a) drilling was performed at 0.7m, 1.0m and 1.5m pitches in the crawler drill drilling (preceding drilling), and then in the cracking capacity test, the state of cracks at each pitch was confirmed. At the same time, the width of the crack was confirmed, and it was confirmed whether the crack was connected to the adjacent hole. Then, the debris was removed and the depth of the split rock was finally confirmed.
  • "area measurement" is first performed.
  • the approximate quantity of the split rock target quantity (m3) is grasped (10m ⁇ 3.0m ⁇ 30m3).
  • "drilling time measurement” is performed. Perform the required drilling in the area and measure the drilling completion time.
  • the drilling completion area is broken and the breaking rock completion time is measured.
  • the crushed quantity of the degree of rock crushing removal is confirmed.
  • FIG. 8 shows the crawler drill (a), which is a drilling device used in the rockwell capacity test (first stage), the Bigger HRB-1000 (b), the Super Bigger HRB-1700 (c), and the multiple-type bigger, which are various rockwell devices.
  • a photograph of HRB-1000 ⁇ 2 (d) is shown, and FIG. 9 shows a test description when a Bigger HRB-1000 (FIG. 8 (b)) is used.
  • FIG. 10 shows a test description when the Super Bigger HRB-1700 (FIG. 8 (c)) is used, and
  • FIG. 11 shows a test description when the multiple type Bigger HRB-1000 ⁇ 2 (FIG. 8 (d)) is used.
  • FIG. 12 shows the results using the Super Bigger HRB-1700 (FIG. 8 (c)) of FIG. 10, and FIGS. 13 and 14 show the multiple hydraulic bigger HRB-1000 ⁇ 2 according to the present invention (FIG. 8 (FIG. 8). d)) shows the result when using).
  • the construction ability and construction cost of both were compared by conducting the construction ability test with the following contents.
  • Drilling time measurement The time required to drill a hole in the construction range determined by the drilling interval was measured, which was commensurate with the rock splitting capacity confirmed in the previous process.
  • Breaking rock time measurement After the drilling was completed, the time required to crack the rock at all drilling points was measured with a rock breaking machine.
  • the case where the Bigger HRB-1000 pair is used is shown for comparison, but it is of course possible to use the Super Bigger as a pair.
  • a pair of Bigger HRBs are mounted on one excavator, one or more excavators may be used at the same time for one excavator, or a plurality of excavators equipped with a pair of Biggers may be used in parallel. It may be used at the same time.
  • the hydraulic type is taken as an example of the rock breaking machine, but it may be driven by compressed air or electricity.
  • the wedge-shaped expander is used as a wedge, and if the gist is to use two or more wedge liners at the same time, the wedge liner is not limited to the Bigger HRB.
  • a construction method for example, a method of filling a highly viscous fluid that prevents the sedimentation of crushed rock for a predetermined time can be adopted without departing from the gist of the present invention.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Drilling And Exploitation, And Mining Machines And Methods (AREA)
  • Earth Drilling (AREA)
PCT/JP2020/032152 2020-08-26 2020-08-26 多連式油圧ビッガー割岩工法 WO2022044154A1 (ja)

Priority Applications (2)

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JP2021571962A JP7176139B2 (ja) 2020-08-26 2020-08-26 多連式油圧ビッガー割岩工法
PCT/JP2020/032152 WO2022044154A1 (ja) 2020-08-26 2020-08-26 多連式油圧ビッガー割岩工法

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6095096A (ja) * 1983-10-28 1985-05-28 古河機械金属株式会社 ベンチカツト工法におけるさく孔方式
JPS61242262A (ja) * 1985-04-16 1986-10-28 三菱重工業株式会社 構造物の表層剥離方法
JPS635092U (enrdf_load_stackoverflow) * 1986-06-27 1988-01-13
JP2007083177A (ja) * 2005-09-22 2007-04-05 High Frequency Heattreat Co Ltd 破砕方法および破砕具
KR20160067649A (ko) * 2014-12-04 2016-06-14 박재현 시공 기간 단축을 위한 무진동 할암 방식 터널시공방법
JP2018193678A (ja) * 2017-05-12 2018-12-06 株式会社増岡組 トンネル掘削方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6095096A (ja) * 1983-10-28 1985-05-28 古河機械金属株式会社 ベンチカツト工法におけるさく孔方式
JPS61242262A (ja) * 1985-04-16 1986-10-28 三菱重工業株式会社 構造物の表層剥離方法
JPS635092U (enrdf_load_stackoverflow) * 1986-06-27 1988-01-13
JP2007083177A (ja) * 2005-09-22 2007-04-05 High Frequency Heattreat Co Ltd 破砕方法および破砕具
KR20160067649A (ko) * 2014-12-04 2016-06-14 박재현 시공 기간 단축을 위한 무진동 할암 방식 터널시공방법
JP2018193678A (ja) * 2017-05-12 2018-12-06 株式会社増岡組 トンネル掘削方法

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