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21. 发明专利

JPH03288079A CIVIL ENGINEERING CONSTRUCTION METHOD OF UNDERGROUND BURIED PIPE 失效
公开(公告)号：JPH03288079A
公开(公告)日：1991-12-18
申请号：JP8829590
申请日：1990-04-04
申请人： JAPAN STEEL & TUBE CONSTR
发明人： ARATA OSAMU , KAWAI TOSHIAKI , ONO KEIJU , IWASHITA FUMIHIKO , SATO KIMIO
IPC分类号： E21D9/06 , F16L1/024
摘要： PURPOSE:To improve the civil engineering construction work efficiency and reduce the construction cost by placing a foaming resin block in a groove formed by drilling sediment, and refilling the groove with sediment immediately, as well as disposing a pipe to be buried in a piping hole formed at the block. CONSTITUTION:A block 4 made of foaming resin capable of supporting earth pressure is placed temporarily inside a groove formed by drilling sediment, and the groove is immediately refilled with sediment, as well as a pipe to be buried is disposed in a piping hole 8 formed at the block 4. The landslide protection of the drilled groove can be thereby omitted to improve construction work efficiency, and refilling sediment becomes unnecessary to reduce the construction cost. Construction work can be thus performed easily and rapidly.

22. 发明专利

JPH03108613A MEASURING METHOD OF AVERAGE FLOW VELOCITY WITHIN CONDUIT 失效
公开(公告)号：JPH03108613A
公开(公告)日：1991-05-08
申请号：JP24507689
申请日：1989-09-22
申请人： JAPAN STEEL & TUBE CONSTR
发明人： MATSUO ATSUSHI , IWASHITA FUMIHIKO , IKEDA SHINTARO
IPC分类号： G01F1/00 , G01F1/52
摘要： PURPOSE:To improve the measuring accuracy of an average flow velocity by obtaining an extra coefficient using a specific formula based on a hydraulic mean depth calculated from the depth of water and the diameter of a tube, equivalent roughness of the tube, mounting position of a sensor and the depth of water, and multiplying the obtained extra coefficient with the flow velocity. CONSTITUTION:A sensor 1 is placed at a fixed position (y) from the bottom of a tube 11 by a sensor holder 15. A flow velocity V at the position (y) is detected by a flow velocity sensor of the sensor 1. At the same time, a depth of water H to the surface of water 12 is measured by a level gauge. A cross sectional area A of the flowing water within the tube 11 and a peripheral length L of the tube 11 in contact with the flowing water are calculated from a diameter D of the tube 11 and the depth of water H, and a hydraulic mean depth R is calculated from the cross sectional area A and peripheral length L. Moreover, an extra coefficient alpha is calculated from an equivalent roughness Ks determined by the hydraulic mean depth R, depth of water H, position (y) and kind of the tube 11 with using a formula. The average flow velocity within the tube 11 can be obtained by multiplying the flow velocity V with the coefficient alpha.

23. 发明专利

JPH0235286A REPLACING CONSTRUCTION FOR ALREADY LAID PIPE 失效
公开(公告)号：JPH0235286A
公开(公告)日：1990-02-05
申请号：JP18284688
申请日：1988-07-22
申请人： JAPAN STEEL & TUBE CONSTR , KOKEN KOGYO KK
发明人： IWASHITA FUMIHIKO , SATO KIMIO , EGUCHI TAKUMI
IPC分类号： E21D9/06 , F16L1/024
摘要： PURPOSE:To replace an already laid pipe to a newly constructed pipe from the ground surface by advancing a screw part having a cutting edge revolving rod into an already laid pipe and fitting a newly constructed pipe onto the periphery of the cutting edge revolving rod and breaking the already laid pipe by the cutting edge and advancing the newly constructed pipe at the same time. CONSTITUTION:The screw part 17a of an auger rod 17 is advanced into an already laid pipe 2 from a starting vertical hole 22, and when said screw part 17a reaches a prescribed position, a rod part 17b is connected. A cutting edge revolving rod 19 having a cutting edge 18 is fitted onto the outer periphery of the rod part 17b. A newly constructed pipe 3 is fitted onto the outer periphery of the cutting edge revolving rod 19 through a center holding tool 24, and the auger rod 17 and the cutting edge revolving rod 19 are revolved and advanced, and the already laid pipe 2 is broken by the cutting edge 18. At the same time, the newly constructed pipe 3 is advanced, and after the cutting edge 18 and the newly constructed pipe 3 reach a final vertical hole 23, the cutting edge 18, etc., are removed. Therefore, the gas pipes, etc., in the vicinity can be protected from being broken. Further, since the construction can be carried out through the dry method, the need of pumps, etc., is obviated, and the generation of muddy soil is prevented.

24. 发明专利

JPS6230908A PILE-HEAD DISPLACEMENT MEASURING APPARATUS FOR PILE DRIVING 失效
公开(公告)号：JPS6230908A
公开(公告)日：1987-02-09
申请号：JP16851885
申请日：1985-08-01
申请人： JAPAN STEEL & TUBE CONSTR , UTO KAZUMA
发明人： UTO KAZUMA , IWASHITA FUMIHIKO , OMORI HIROSHI
IPC分类号： G01B7/00 , G01B21/00 , G01C15/00 , G01C21/16
摘要： PURPOSE:To measure displacement of pile-heads easily and safely, by measuring acceleration of the pile-head for each driving stroke and obtaining the required value by double analogue integration. CONSTITUTION:Change of acceleration per each impact is measured with an accelerameter 1 attached on a pile-head setter 8. An output of this acceleration is modulated into an FM or an AM electric wave with a telemeter transmitter 2 attached to the pile-head setter 8 and it is transmitted to a telemeter-receiver 4 installed in a measuring area. In the receiver, the electric wave is received for converting it into the specified electric signal. A transient recorder 5 converts an analogue electric signal from the receiver 4 into a digital signal for recording. Next, an analogue integrator 6 makes double integration of the analogue output prom the recorder 5 for a deviation output. By this arrangement, penetration and rebound amounts necessary for a discrimination equation of dynamic holding force of pile can immediately be obtained. And, the deviation output from an analogue integrator 6 is plotted on an X-Y graph of a X-Y recorder 7.

25. 发明专利

JPH02213538A CIVIL WORK METHOD OF UNDERGROUND PIPE 失效
公开(公告)号：JPH02213538A
公开(公告)日：1990-08-24
申请号：JP3265889
申请日：1989-02-14
申请人： JAPAN STEEL & TUBE CONSTR
发明人： IWASHITA FUMIHIKO , URAMOTO TOSHIAKI , SATO KIMIO
IPC分类号： E03F3/06
摘要： PURPOSE:To prevent a buried pipe from being settled unevenly by filling back sediment to a predetermined depth of groove, positioning blocks of foam styrene, the upper and lower surfaces of which are flat, on the sediment to a specified thickness, and filling back sediment again on these blocks. CONSTITUTION:After the back of a pipe 3 is sufficiently filled back with sediment, a plate block 5 made of foam styrene, the upper and lower surfaces of which are flat the thickness of which is, for example, about 40cm, is positioned on the upper entire surface of the filled-back sediment layers 6a to 6i. In laying the block 5, its width W is worked according to the width of a groove 2, and then one or multiple blocks 5 are stacked according to the buried depth of the pipe 3, and these blocks 5 are connected to each other as one body with fastening fittings not shown in the attached figures. Over each block 5 positioned under such conditions, sediment is filled back to form a sediment layer 7.

26. 发明专利

JPH02213537A CIVIL WORK METHOD OF UNDERGROUND PIPE 失效
公开(公告)号：JPH02213537A
公开(公告)日：1990-08-24
申请号：JP3265789
申请日：1989-02-14
申请人： JAPAN STEEL & TUBE CONSTR
发明人： IWASHITA FUMIHIKO , URAMOTO TOSHIAKI , SATO KIMIO
IPC分类号： E03F3/06
摘要： PURPOSE:To shorten the periods of temporary restoring after temporary digging performed when an underground pipe is damaged, and real digging, and simplify a restoring work by positioning a form of foam styrene block on the underground pipe after temporarily digging the sediment over the underground pipe to restore temporarily the temporarily digged portion. CONSTITUTION:When a pipe 3 is damaged, the sediment over the upper side of the pipe 3 is digged temporarily and exposed, and the damaged portion of the pipe 3 is located and the damaged condition is confirmed. Then the upper side of the pipe 3 is restored temporarily to prevent trouble due to traffic, etc. In performing temporary restoring a semicircular groove 9 having a radius (r) corresponding to the outside diameter of the pipe 3 is formed on a frame 7a made of foam styrene block, which is set on the upper side of the exposed pipe 3. First, the falsework 7a is positioned and worked according to the size of the groove 2 digged temporarily. The form 9 is positioned so that the groove 9 may be applied tightly on the upper surface of the pipe 3. Then multiple forms 7b, 7c made of foam styrene block the upper and lower surfaces of which are formed flat, are stacked according to the degree of each covering depth over the buried pipe 3, and then the top of the groove 2 is covered by a protective steel plate 10. As a result, temporary restoring is completed.

27. 发明专利

JPH02147907A PROPULSION DIRECTION MEASURING APPARATUS FOR BURYING OF PIPE 失效
公开(公告)号：JPH02147907A
公开(公告)日：1990-06-06
申请号：JP30070888
申请日：1988-11-30
申请人： JAPAN STEEL & TUBE CONSTR , FUKUDA TOSHIO , YAMADA AKIO , HOSOGAI HIDEMI , YANA KAZUO
发明人： IWASHITA FUMIHIKO , URAMOTO TOSHIAKI , FUKUDA TOSHIO , YAMADA AKIO , HOSOGAI HIDEMI , YANA KAZUO
IPC分类号： E21D9/06 , E21D9/093 , G01C15/00
摘要： PURPOSE:To achieve a higher accuracy by supporting the other end of each one of connecting rods with one end thereof fixed on each specified surface of front and rear guide blocks rotatably on a joint block to fix a displacement sensor on the joint block separated at a fixed interval from the side of each connecting rod. CONSTITUTION:One end of a connecting rod 4 is fixed on a surface parallel to a direction Z of propelling a front guide block 1 while one end of a connecting rod 10 is fixed on a surface 11 parallel with a direction Z of a rear guide block 3 while vertical to the surface 5 and other ends of the rods 4 and 11 are supported rotatably on a joint block 2 with rotating shafts 7 and 14. A displacement sensor 8 is fixed with a fixing member 9 spaced by a specified interval D from the side separated by a specified distance L from the shaft 7 of the rod 4 while a displacement sensor 14 is fixed with a fixing member 15 away by a specified interval D from the side separated by a specified distance L from a shaft 13 of the rod 10. Thus, displacements of the rods 4 and 10 is measured with the sensors 8 and 14 to calculate the direction 8 of propulsion.

28. 发明专利

JPH0247497A REPLACING WORK OF EXISTING TUBE 失效
公开(公告)号：JPH0247497A
公开(公告)日：1990-02-16
申请号：JP19848788
申请日：1988-08-09
申请人： JAPAN STEEL & TUBE CONSTR , KOKEN KOGYO KK
发明人： IWASHITA FUMIHIKO , SATO KIMIO , HANADA MASANORI , MIURA HARUO
IPC分类号： E21D9/06 , F16L1/024 , F16L55/165
摘要： PURPOSE:To replace new tubes for existing tubes without damaging the nearby tube by a method in which an auger rod with a spiral blade is thrust through an existing tube, and a rotary rod having a cutting edge on its tip is inserted into a new tube and advanced rotationally. CONSTITUTION:An auger rod 17 with a spiral blade is rotationally penetrated from a starting vertical pit 22 until its tip reaches an arrival vertical pit 23, and a given length of a rod 17c is connected to the basal end of the rod 17. A rotary rod 19 tipped with a cutting edge 18 to excavate the end portion of an existing tube is fitted on the periphery of the rod 17, and a new tube 3 is inserted through a center holder into the rod 19 and rotationally advanced from the pit 22 side while breaking the existing tube by the cutting edge 18. Tube connection is performed by one-set basis sequentially, advanced until reaching the pit 23, and the cutting edge 18 is drawn out and removed in the pit 23. The others are drawn out and removed in the pit 22.

29. 发明专利

JPH0243496A METHOD FOR LAYINGLY CHANGING EXISTING PIPE 失效
公开(公告)号：JPH0243496A
公开(公告)日：1990-02-14
申请号：JP19329688
申请日：1988-08-02
申请人： JAPAN STEEL & TUBE CONSTR , KOKEN KOGYO KK
发明人： IWASHITA FUMIHIKO , SATO KIMIO , EGUCHI TAKUMI
IPC分类号： E21D9/06 , F16L55/165
摘要： PURPOSE:To improve the efficiency of the laying operation of an underground pipe by installing a cutting edge on the end of an auger rod fed and advanced from an arrival vertical shaft, rotating the cutting edge from a departure vertical shaft to break existing pipes, and advancingly feeding newly setting pipes to the rear of the cutting edge. CONSTITUTION:A departure vertical shaft 22 and an arrival vertical shaft 23 are dug on both sides of an existing pipe 2 and an auger rod 17 is rotated by means of a drill head 21 from the arrival vertical shaft 23 to be advanced up to the departure vertical shaft 22. At this time, the inside of the existing pipe 2 is swept by a spiral portion 17a. A cutting edge 18 is installed on the end of the auger rod 17, being rotatably installed on a drill head 20 via a cutting-edge rotating rod 19, and cutting edge 18 is advanced in the direction of the vertical shaft 23 while breaking the existing pipes by the rotation thereof. On the other hand, newly setting pipes 3 are fed via center holding members 24 from the rear of the cutting edge 18 while being fed and added from the departure vertical shaft 22. Thereby, working efficiency can be improved.

30. 发明专利

JPS61271488A BURIED OBJECT DETECTOR 失效
公开(公告)号：JPS61271488A
公开(公告)日：1986-12-01
申请号：JP11330485
申请日：1985-05-28
申请人： JAPAN STEEL & TUBE CONSTR , TOYOOKA DENKI KK
发明人： YAMAMURA TAKAO , CHIBA SHUJI , IWASHITA FUMIHIKO , MATSUO ATSUSHI , SUZUKI ICHIAKI
IPC分类号： G01V3/02
摘要： PURPOSE:To prevent possible accident against a buried conductive object, by safely detecting changes in the electric resistance which will be caused immediately after a metal crown or the like of a drilling machine gets in contact with the buried conductive object during the operation. CONSTITUTION:A drilling machine 2 is set up and ground electrodes 7 and 8 are driven into the ground 10. Then, the operation of the machine 2 is started while a power source switch 12 of a detector is turned ON. As a metal crown at the tip of a drilling rod 3 gets in contact with a buried pipe 9, the value of current flowing through a resistance 14 is increased. Changes in the current is separated with a signal separation circuit 15 and the DC current is amplified 17 to be displayed on a current meter 18. The AC component is amplified 20A and 20B to be inputted into an analog switch 20C. Then, when the output value of an amplifier 17C inputted into the switch 20C exceeds a fixed level, the AC component is outputted to a timer 21. When a timer 21 counts time with a time setting circuit 24 and a buzzer 25 are energized and a control switch 26 is operated as required to stop the machine 2.

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