Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Shield muck filling body as well as preparation method and use method thereof
The invention provides a shield muck filling body which is prepared from the following raw materials in parts by weight: 1 part of shield muck, 0.1-0.3 part of a cementing material and 0.15-0.35 part of water. The particle size of the shield muck is smaller than or equal to 2.36 mm. The cementing material is prepared from the following raw materials in percentage by weight: 40%-60% of slag powder, 30%-45% of fly ash, 8%-13% of an exciting agent, 0.8%-1.5% of a retarder, 0.02%-0.04% of methyl cellulose and the balance of water. According to the shield muck filling body prepared by the invention, the initial fluidity is greater than or equal to 180cm, the expansion degree is greater than or equal to 550cm, the 1h hourly fluidity is greater than or equal to 120cm, the 90d drying shrinkage value is less than or equal to 8 * 10 <-4 >, and the 28d cubic compressive strength is greater than or equal to 1.5 MPa. The low-strength filling material is prepared by compounding a large amount of shield muck as a basic material and a cementing material matched with the basic material in performance, the raw materials are wide in source and easy to obtain, the implementation process is simple, the production cost is low, and resource utilization of the large amount of shield muck is achieved while the goaf backfilling problem is solved.
本发明提供了一种盾构渣土充填体，按重量份计，其制备原料包括：盾构渣土1份，胶凝材料0.1～0.3份，水0.15～0.35份。所述盾构渣土的粒径≤2.36mm。所述胶凝材料，按重量百分比计，其制备原料包括：矿渣粉40％～60％、粉煤灰30％～45％、激发剂8％～13％、缓凝剂0.8％～1.5％、甲基纤维素0.02～0.04％、水补充余量至100％。本发明制备的盾构渣土充填体，其初始流动度≥180cm，扩展度≥550cm，1h经时流动度≥120cm，90d干燥收缩值≤8×10‑4，28d立方体抗压强度≥1.5MPa。此类低强度充填材料以大宗盾构渣土为基础材料复合与其性能相匹配的胶凝材料制备而成，原材料来源广泛且易得，实施工艺简单，生产成本低廉，在解决采空区回填难题的同时，也实现了大宗盾构渣土的资源化利用。
Shield muck filling body as well as preparation method and use method thereof
The invention provides a shield muck filling body which is prepared from the following raw materials in parts by weight: 1 part of shield muck, 0.1-0.3 part of a cementing material and 0.15-0.35 part of water. The particle size of the shield muck is smaller than or equal to 2.36 mm. The cementing material is prepared from the following raw materials in percentage by weight: 40%-60% of slag powder, 30%-45% of fly ash, 8%-13% of an exciting agent, 0.8%-1.5% of a retarder, 0.02%-0.04% of methyl cellulose and the balance of water. According to the shield muck filling body prepared by the invention, the initial fluidity is greater than or equal to 180cm, the expansion degree is greater than or equal to 550cm, the 1h hourly fluidity is greater than or equal to 120cm, the 90d drying shrinkage value is less than or equal to 8 * 10 <-4 >, and the 28d cubic compressive strength is greater than or equal to 1.5 MPa. The low-strength filling material is prepared by compounding a large amount of shield muck as a basic material and a cementing material matched with the basic material in performance, the raw materials are wide in source and easy to obtain, the implementation process is simple, the production cost is low, and resource utilization of the large amount of shield muck is achieved while the goaf backfilling problem is solved.
本发明提供了一种盾构渣土充填体，按重量份计，其制备原料包括：盾构渣土1份，胶凝材料0.1～0.3份，水0.15～0.35份。所述盾构渣土的粒径≤2.36mm。所述胶凝材料，按重量百分比计，其制备原料包括：矿渣粉40％～60％、粉煤灰30％～45％、激发剂8％～13％、缓凝剂0.8％～1.5％、甲基纤维素0.02～0.04％、水补充余量至100％。本发明制备的盾构渣土充填体，其初始流动度≥180cm，扩展度≥550cm，1h经时流动度≥120cm，90d干燥收缩值≤8×10‑4，28d立方体抗压强度≥1.5MPa。此类低强度充填材料以大宗盾构渣土为基础材料复合与其性能相匹配的胶凝材料制备而成，原材料来源广泛且易得，实施工艺简单，生产成本低廉，在解决采空区回填难题的同时，也实现了大宗盾构渣土的资源化利用。
Shield muck filling body as well as preparation method and use method thereof
一种盾构渣土充填体、其制备方法与使用方法
BIAN LIBO (Autor:in) / HU XINGBO (Autor:in) / CHAI DONGRAN (Autor:in) / WEI ZENGZHI (Autor:in) / LIU XUELEI (Autor:in) / REN DONGLIANG (Autor:in) / CAO XI (Autor:in) / LI WEI (Autor:in) / LIU LEI (Autor:in) / HUANG CHEN (Autor:in)
20.12.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
/
E02D
FOUNDATIONS
,
Gründungen
/
E21F
Sicherheitsvorrichtungen, Förderung, Auffüllen oder Bergversatz, Rettungswesen, Bewetterung oder Entwässerung in oder von Gruben oder Tunnels
,
SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINAGE IN OR OF MINES OR TUNNELS
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