A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
METHOD FOR FORMING THROUGH-HOLE IN DAM BODY
PROBLEM TO BE SOLVED: To form a through-hole in a dam body efficiently, while controlling vibration at the time of excavation.SOLUTION: A method for forming a though-hole 3 in an existing dam body 1 comprises: a process for forming a first space 6 of the through-hole 3 in the dam body 1 by excavating the dam body 1 with a free cross-section excavator 5 from the downstream side to the upstream side, leaving a prescribed unexcavated section 30 at the end of the dam body 1 on the upstream side; a process for forming a plurality of boreholes through the prescribed unexcavated section 30 of the dam body 1, continuously through the upstream side of the dam body 1 and the first space 6; a process for inserting a wire saw 11 through the plurality of boreholes; a process for dividing the prescribed unexcavated section 30 of the dam body 1 into a plurality of concrete blocks CB1 to CB16, using the wire saw 11; and a process for forming a second space 9 of the through-hole 3 at the end of the dam body 1 on the upstream side, by carrying out the concrete blocks CB1 to CB16 from the upstream side of the dam body 1.
【課題】ダム堤体に貫通孔を効率良く形成すると共に孔貫通時の振動の発生を抑制する。【解決手段】既設のダム堤体１に貫通孔３を形成する方法として、ダム堤体１の上流側端部に所定の未掘削区間３０を残すように、ダム堤体１を、その下流側から上流側に向かって自由断面掘削機５によって掘削することにより、ダム堤体１に貫通孔３の第１の空間６を形成する工程と、ダム堤体１の上流側と第１の空間６とを連通するように、ダム堤体１の所定の未掘削区間３０に複数のボーリング孔を形成する工程と、複数のボーリング孔にワイヤーソー１１を通す工程と、ワイヤーソー１１を用いて、ダム堤体１の所定の未掘削区間３０を複数のコンクリートブロックＣＢ１〜ＣＢ１６に分割する工程と、コンクリートブロックＣＢ１〜ＣＢ１６をダム堤体１の上流側より搬出することによって、ダム堤体１の上流側端部に貫通孔３の第２の空間９を形成する工程と、を含む。【選択図】図６
METHOD FOR FORMING THROUGH-HOLE IN DAM BODY
PROBLEM TO BE SOLVED: To form a through-hole in a dam body efficiently, while controlling vibration at the time of excavation.SOLUTION: A method for forming a though-hole 3 in an existing dam body 1 comprises: a process for forming a first space 6 of the through-hole 3 in the dam body 1 by excavating the dam body 1 with a free cross-section excavator 5 from the downstream side to the upstream side, leaving a prescribed unexcavated section 30 at the end of the dam body 1 on the upstream side; a process for forming a plurality of boreholes through the prescribed unexcavated section 30 of the dam body 1, continuously through the upstream side of the dam body 1 and the first space 6; a process for inserting a wire saw 11 through the plurality of boreholes; a process for dividing the prescribed unexcavated section 30 of the dam body 1 into a plurality of concrete blocks CB1 to CB16, using the wire saw 11; and a process for forming a second space 9 of the through-hole 3 at the end of the dam body 1 on the upstream side, by carrying out the concrete blocks CB1 to CB16 from the upstream side of the dam body 1.
【課題】ダム堤体に貫通孔を効率良く形成すると共に孔貫通時の振動の発生を抑制する。【解決手段】既設のダム堤体１に貫通孔３を形成する方法として、ダム堤体１の上流側端部に所定の未掘削区間３０を残すように、ダム堤体１を、その下流側から上流側に向かって自由断面掘削機５によって掘削することにより、ダム堤体１に貫通孔３の第１の空間６を形成する工程と、ダム堤体１の上流側と第１の空間６とを連通するように、ダム堤体１の所定の未掘削区間３０に複数のボーリング孔を形成する工程と、複数のボーリング孔にワイヤーソー１１を通す工程と、ワイヤーソー１１を用いて、ダム堤体１の所定の未掘削区間３０を複数のコンクリートブロックＣＢ１〜ＣＢ１６に分割する工程と、コンクリートブロックＣＢ１〜ＣＢ１６をダム堤体１の上流側より搬出することによって、ダム堤体１の上流側端部に貫通孔３の第２の空間９を形成する工程と、を含む。【選択図】図６
METHOD FOR FORMING THROUGH-HOLE IN DAM BODY
ダム堤体における貫通孔の形成方法
TAKIGUCHI NORIO (author) / SUZUKI SATOSHI (author) / KAIZE YOSHIHARU (author) / FUJIWARA KENZO (author) / IWASAKI TOSHINORI (author) / KITAZAKI SHINJI (author) / MUTO NARIYUKI (author) / NISHIO AKIRA (author)
2015-08-06
Patent
Electronic Resource
Japanese
IPC:
E02B
HYDRAULIC ENGINEERING
,
Wasserbau
THROUGH-HOLE FORMING TOOL AND THROUGH-HOLE FORMING METHOD
| European Patent Office | 2020
Construction method for upper expansion body precast pile through secondary compaction hole forming
| European Patent Office | 2024