JP7455440B2 - 密閉型シールド推進工法における推進停止時の切羽の崩壊防止方法 - Google Patents
密閉型シールド推進工法における推進停止時の切羽の崩壊防止方法 Download PDFInfo
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- JP7455440B2 JP7455440B2 JP2023093564A JP2023093564A JP7455440B2 JP 7455440 B2 JP7455440 B2 JP 7455440B2 JP 2023093564 A JP2023093564 A JP 2023093564A JP 2023093564 A JP2023093564 A JP 2023093564A JP 7455440 B2 JP7455440 B2 JP 7455440B2
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- face
- water
- propulsion
- cutter
- chamber
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- 238000000034 method Methods 0.000 title claims description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 43
- 239000006096 absorbing agent Substances 0.000 claims description 25
- 238000009412 basement excavation Methods 0.000 claims description 24
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- 238000007599 discharging Methods 0.000 claims description 5
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- 238000010276 construction Methods 0.000 description 12
- 238000002347 injection Methods 0.000 description 12
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- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
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- 239000011435 rock Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
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- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
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- 229920002472 Starch Polymers 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 229920006222 acrylic ester polymer Polymers 0.000 description 1
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- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
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- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003657 drainage water Substances 0.000 description 1
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- 238000004904 shortening Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Images
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Description
2 カッタヘッド
21 面板
22 開口部
23 カッタビット
3 チャンバー
4 隔壁
5 送排泥管
5a 送泥管
5b バイパス弁
6 注入管
7 混合容器
8 吸水剤
9 注入ポンプ
10 止水バルブ
11 地山
12 切羽
Claims (3)
- 密閉型シールド推進工法において、堀進停止予定地点の略5cm手前で送排泥を停止した加圧状態の掘進機のカッタチャンバ内に高吸水性樹脂と油類を混合してなる吸水剤を注入した後、送排泥を停止した状態で、前記掘進機のカッタヘッドを回転させて前記カッタチャンバ内を撹拌すると共に、前記堀進停止予定地点まで前記掘進機を堀進させ、前記堀進停止予定地点で前記掘進機の堀進を停止することを特徴とする密閉型シールド推進工法における推進停止時の切羽の崩壊防止方法。
- 前記吸水剤を前記カッタチャンバ内に注入する量が、チャンバーの容量に対し、約17リットル/m 3 であることを特徴とする請求項1記載の密閉型シールド推進工法における推進停止時の切羽の崩壊防止方法。
- 前記掘進機のカッタヘッドの面板の開口率が8%以上10%以下であることを特徴とする請求項1又は2に記載の密閉型シールド推進工法における推進停止時の切羽の崩壊防止方法。
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JP2022101102 | 2022-06-23 | ||
JP2022101102 | 2022-06-23 |
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JP2024002931A JP2024002931A (ja) | 2024-01-11 |
JP7455440B2 true JP7455440B2 (ja) | 2024-03-26 |
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JP2023093564A Active JP7455440B2 (ja) | 2022-06-23 | 2023-06-06 | 密閉型シールド推進工法における推進停止時の切羽の崩壊防止方法 |
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Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000160152A (ja) | 1998-12-01 | 2000-06-13 | Toagosei Co Ltd | 泥水トンネル掘削工法 |
JP2000248273A (ja) | 1999-03-02 | 2000-09-12 | Dai Ichi Kogyo Seiyaku Co Ltd | シールド工法用加泥剤 |
JP2003120174A (ja) | 2001-10-17 | 2003-04-23 | Shimizu Corp | シールド工法における切羽安定方法、及び切羽保持用泥水 |
JP2005220563A (ja) | 2004-02-04 | 2005-08-18 | Ohbayashi Corp | シールド工法における被掘削土の安定化方法 |
JP2009243130A (ja) | 2008-03-31 | 2009-10-22 | Maeda Corp | 泥水シールドにおける切羽崩落防止方法 |
CN111335910A (zh) | 2020-03-04 | 2020-06-26 | 海南大学 | 一种盾构机开仓检修更换刀具的方法 |
-
2023
- 2023-06-06 JP JP2023093564A patent/JP7455440B2/ja active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000160152A (ja) | 1998-12-01 | 2000-06-13 | Toagosei Co Ltd | 泥水トンネル掘削工法 |
JP2000248273A (ja) | 1999-03-02 | 2000-09-12 | Dai Ichi Kogyo Seiyaku Co Ltd | シールド工法用加泥剤 |
JP2003120174A (ja) | 2001-10-17 | 2003-04-23 | Shimizu Corp | シールド工法における切羽安定方法、及び切羽保持用泥水 |
JP2005220563A (ja) | 2004-02-04 | 2005-08-18 | Ohbayashi Corp | シールド工法における被掘削土の安定化方法 |
JP2009243130A (ja) | 2008-03-31 | 2009-10-22 | Maeda Corp | 泥水シールドにおける切羽崩落防止方法 |
CN111335910A (zh) | 2020-03-04 | 2020-06-26 | 海南大学 | 一种盾构机开仓检修更换刀具的方法 |
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