[특허]In situ mixing apparatus and methods for creating underground wall

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특허 상세정보

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내보내기 페이스북 공유 트위터 공유 카카오톡 공유

In situ mixing apparatus and methods for creating underground wall

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E02F-005/00
미국특허분류(USC)	037/352; 037/356
출원번호	US-0278105 (2002-10-21)
§371/§102 date	20031205 (20031205)
발명자 / 주소	Taki, Osamu
대리인 / 주소	Fenwick &
인용정보	피인용 횟수 : 2 인용 특허 : 7

초록
▼

Methods and apparatuses are provided for constructing an underground wall in a trench, include using multiple chains on an endless chain cutter and individually controlling the speed and/or direction of the chains, various configurations of cutter bits and agitator bars on the chains, a technique for assembling the endless chain cutter in a horizontal position outside of a starter trench, then erecting the endless chain cutter to a vertical position in the starter trench. A guide frame straddles the starter trench. The endless chain cutter is repeatedly moved within the guide frame, then the guide frame is re-positioned until the entire length of the trench has been excavated. A central portion of the trench may be cut deeper than outer portions to create interlocking joints between adjacent wall sections and added stability for the resulting wall. Side gap barriers seal gaps between the sides of the endless chain cutter and side walls of the trench. A base machine, such as a common backhoe, may be used to dig the starter trench, to push the endless chain cutter into the starter trench and erected it to a vertical position to re-position the guide frame, and to de-erect the endless chain cutter from its vertical position and remove it from the trench.

대표
청구항
▼

1. An in situ mixing apparatus for creating an underground wall, comprising:an elongated guide post; and at least two independently driven chains having cutter or agitator bits, said two independently driven chains extending around the guide post, parallel with one another, a first chain of said two independently driven chains driven in a first direction, and a second of said two independently driven chains driven in a second direction different from the first direction. 2. The in situ mixing apparatus according to claim 1, wherein each of the at least two independently driven chains has a width, and the width of a one of the chains is different than the width of another of the chains.3. A method of creating an underground wall, comprising:providing at least two independently driven chains having cutter or agitator bits, said two independently driven chains extending around a guide post, a first chain of said two independently driven chains driven in a first direction, and a second of said two independently driven chains driven in a second direction different from the first direction; and driving the chains while moving the guide post in a direction of a length of the underground wall being created. 4. Method, according to claim 3, further comprising:driving one of the chains at a first speed; and driving a second of the chains at a second speed which is slower than the first speed. 5. Method, according to claim 4, wherein:the second speed is approximately half of the first speed. 6. Method, according to claim 4, wherein types of soil are mixed to create an underground wall, further comprising:controlling at least one of the first and second speeds as a function of the type of soil being mixed. 7. Method, according to claim 4, wherein types of cutter or agitator bits are disposed on the chains, further comprising:controlling at least one of the first and second speeds as a function of the type of bits being used. 8. Method of creating an underground wall, according to claim 3, wherein there is a middle chain disposed between two outer chains, further comprising:driving the middle chain at a first speed; driving at least one of the outer chains at a second speed which is different than the first speed. 9. Method, according to claim 8, wherein the first speed is approximately of the second speed.10. Method, according to claim 8, further comprising:driving the middle chain in a first direction; and driving at least one of the outer chains in a second direction which is opposite the first direction. 11. Method of creating an underground wall, according to claim 3, wherein there is a middle chain disposed between two outer chains, further comprising:at a given position on the elongated guide post, corresponding to a given depth position of a trench being excavated, the earth at that depth position is acted upon both by at least one cutter bit on one of the chains and by at least one agitator bit on another of the chains. 12. Method of creating an underground wall, according to claim 3, comprising:with an endless chain cutter having cutter bits, cutting deeper in a central portion of a trench than in outer portions of the trench. 13. An in situ mixing apparatus for creating a trench for an underground wall, the trench having two opposite side walls, a top plane, and a bottom plane, the top plane being even with the ground surface, the apparatus comprising:an elongated guide post having two opposite sides at least two independently driven chains having cutter or agitator bits, said two independently driven chains extending around the guide posts, parallel with one another, a first chain of said two independently driven chains driven in a first direction, and a second of said two independently driven chains driven in a second direction different from the first direction; side gap barriers disposed between the sides of the guide post and the side walls of the trench, extending from the bottom plane of the trench to at least the top plane of the trench. 14. The Apparatus according to claim 13, wherein:the side gap barriers are made of a rugged, flexible material. 15. The Apparatus according to claim 13, wherein:the side gap barriers are sized and shaped to seal gaps between the sides of the elongated guide post and side walls of the trench. 16. The Apparatus according to claim 13, wherein:the side gap barriers isolate a portion of the trench which is ahead of the elongated guide post from a portion of the trench which is behind the elongated guide post. 17. An in situ mixing apparatus for creating an underground wall, comprising:a guide frame having a longitudinal length, an elongated guide post adapted to move along the longitudinal length of the guide frame; and, at least two independently driven chains having cutter or agitator bits, said two independently driven chains extending around the guide posts, parallel with one another, a first chain of said two independently driven chains driven in a first direction, and a second of said two independently driven chains driven in a second direction different from the first direction. 18. The Apparatus according to claim 17, wherein the longitudinal length of the guide frame is shorter than the desired underground wall.19. The Apparatus according to claim 17, wherein the guide frame is positioned to straddle a trench.20. The Apparatus according to claim 17, wherein the guide frame further contains a plurality of adjustable support legs to allow guide post and chain to move along the longitudinal length in a level path notwithstanding an uneven ground surface.21. The Apparatus according to claim 20, wherein the guide frame support legs rest on rollers to facilitate repositioning of the guide frame by a base machine.22. The Apparatus according to claim 20, wherein the guide frame support legs rest on feet adapted to prevent the legs from breaking the surface of the ground.

인용문헌 (7)

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In situ mixing apparatus and methods for creating underground wall

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특허 상세정보

In situ mixing apparatus and methods for creating underground wall

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인용문헌 (7)

이 특허를 인용한 특허 (2)

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IPC 상세정보(version : 201201)

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