A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction method suitable for construction adit entrance area with relatively poor geological conditions
The invention provides a construction method suitable for a construction adit entrance area with relatively poor geological conditions, and relates to the technical field of various construction adit entrance constructions. The construction method comprises the steps that a construction adit entrance section area is excavated, and side slopes on the two sides and a front adit face side slope adopt different slope ratios; the excavated side slopes on the two sides are timely subjected to reinforcing mesh hanging and anchor-gunited supporting, and drainage holes are formed in the side slopes; after excavation of the front adit face side slope is completed, slope attaching concrete construction is conducted in time, so that the side slope stability of a front adit face is ensured; construction of an advanced grouting large pipe shed is performed; and construction of an open cut tunnel section of the entrance area is performed, wherein arrangement of a road surface from the open cut tunnel section to a downhill section of an outer side slope is performed, so that it is guaranteed that external rainwater cannot be collected into a construction adit. According to the method, the construction requirement is met, good safety guarantee is provided for subsequent excavation and supporting of an adit body section of the construction adit, the safety construction condition can be improved, and the engineering investment is effectively saved.
本发明提供了一种适于地质条件较差的施工支洞进洞口区域的施工方法，涉及各类施工支洞进洞口施工技术领域，该施工方法包括：开挖施工支洞洞口段区域，两侧边坡及正洞脸边坡分别采用不同坡比；对两侧开挖边坡及时进行挂钢筋网及喷锚支护，并对边坡设置排水孔；正洞脸边坡开挖完成后及时进行贴坡混凝土的施工，确保正洞脸处的边坡稳定性；超前注浆大管棚的施工；进洞口区域明洞段的施工，包括明洞段至外侧边坡顺坡段路面的布置，保证外部雨水不会汇集至施工支洞内部。本发明不仅满足施工需要，还为后续施工支洞洞身段开挖支护提供良好的安全保障，能够提高安全施工条件并有效节省工程投资。
Construction method suitable for construction adit entrance area with relatively poor geological conditions
The invention provides a construction method suitable for a construction adit entrance area with relatively poor geological conditions, and relates to the technical field of various construction adit entrance constructions. The construction method comprises the steps that a construction adit entrance section area is excavated, and side slopes on the two sides and a front adit face side slope adopt different slope ratios; the excavated side slopes on the two sides are timely subjected to reinforcing mesh hanging and anchor-gunited supporting, and drainage holes are formed in the side slopes; after excavation of the front adit face side slope is completed, slope attaching concrete construction is conducted in time, so that the side slope stability of a front adit face is ensured; construction of an advanced grouting large pipe shed is performed; and construction of an open cut tunnel section of the entrance area is performed, wherein arrangement of a road surface from the open cut tunnel section to a downhill section of an outer side slope is performed, so that it is guaranteed that external rainwater cannot be collected into a construction adit. According to the method, the construction requirement is met, good safety guarantee is provided for subsequent excavation and supporting of an adit body section of the construction adit, the safety construction condition can be improved, and the engineering investment is effectively saved.
本发明提供了一种适于地质条件较差的施工支洞进洞口区域的施工方法，涉及各类施工支洞进洞口施工技术领域，该施工方法包括：开挖施工支洞洞口段区域，两侧边坡及正洞脸边坡分别采用不同坡比；对两侧开挖边坡及时进行挂钢筋网及喷锚支护，并对边坡设置排水孔；正洞脸边坡开挖完成后及时进行贴坡混凝土的施工，确保正洞脸处的边坡稳定性；超前注浆大管棚的施工；进洞口区域明洞段的施工，包括明洞段至外侧边坡顺坡段路面的布置，保证外部雨水不会汇集至施工支洞内部。本发明不仅满足施工需要，还为后续施工支洞洞身段开挖支护提供良好的安全保障，能够提高安全施工条件并有效节省工程投资。
Construction method suitable for construction adit entrance area with relatively poor geological conditions
一种适于地质条件较差的施工支洞进洞口区域的施工方法
YANG FENG (author) / XU WEI (author) / CAI JIANGUO (author)
2021-07-13
Patent
Electronic Resource
Chinese
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