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A platform for research: civil engineering, architecture and urbanism
Pipe-jacking tunneling construction method for hard rock stratum
The invention discloses a pipe-jacking tunneling construction method for a hard rock stratum. The method comprises the following steps that information of the height and the trend of a hard rock of a receiving well, the position of a hard rock jacking hole and the jacking gradient of the hard rock is determined; a plurality of sets of cutters are arranged on a cutter head of the first pipe jacking machine according to the information; after the first pipe jacking machine jacks to a designed position, pipe withdrawing and slurry filling are carried out; when the first pipe jacking machine retreats to the position of the through-wall pipe, retreating is stopped, so that the first pipe jacking machine blocks the tunnel portal, and after the mixed slurry is solidified, the first pipe jacking machine retreats; and the starting well recovers jacking of the second pipe jacking machine, and jacking is conducted to the receiving well for receiving. The first pipe jacking machine is used for reversely breaking the hard rock in the receiving well, then the first pipe jacking machine is dragged out, and grouting is carried out while dragging is carried out, so that breaking of the hard rock is achieved, normal jacking of the large-section second pipe jacking machine is guaranteed, and smooth proceeding of a project is guaranteed.
本发明公开了一种硬岩地层顶管掘进施工方法，包括以下步骤：确定接收井硬岩高度及走向、硬岩顶进洞口位置和硬岩顶进坡度的信息；根据上述信息在第一顶管机的刀盘上设置多组刀具；第一顶管机顶到设计位置之后，进行退管和浆液填充；第一顶管机后退至穿墙管位置时，停止后退使第一顶管机堵住洞门，待混合浆液凝固，退出第一顶管机；始发井恢复第二顶管机顶进，并顶进至接收井接收。通过在接收井利用第一顶管机反向破除硬岩，再将第一顶管机拖出，边拖边注浆，从而实现硬岩的破除，保证大截面第二顶管机能正常顶进，保证工程顺利进行。
Pipe-jacking tunneling construction method for hard rock stratum
The invention discloses a pipe-jacking tunneling construction method for a hard rock stratum. The method comprises the following steps that information of the height and the trend of a hard rock of a receiving well, the position of a hard rock jacking hole and the jacking gradient of the hard rock is determined; a plurality of sets of cutters are arranged on a cutter head of the first pipe jacking machine according to the information; after the first pipe jacking machine jacks to a designed position, pipe withdrawing and slurry filling are carried out; when the first pipe jacking machine retreats to the position of the through-wall pipe, retreating is stopped, so that the first pipe jacking machine blocks the tunnel portal, and after the mixed slurry is solidified, the first pipe jacking machine retreats; and the starting well recovers jacking of the second pipe jacking machine, and jacking is conducted to the receiving well for receiving. The first pipe jacking machine is used for reversely breaking the hard rock in the receiving well, then the first pipe jacking machine is dragged out, and grouting is carried out while dragging is carried out, so that breaking of the hard rock is achieved, normal jacking of the large-section second pipe jacking machine is guaranteed, and smooth proceeding of a project is guaranteed.
本发明公开了一种硬岩地层顶管掘进施工方法，包括以下步骤：确定接收井硬岩高度及走向、硬岩顶进洞口位置和硬岩顶进坡度的信息；根据上述信息在第一顶管机的刀盘上设置多组刀具；第一顶管机顶到设计位置之后，进行退管和浆液填充；第一顶管机后退至穿墙管位置时，停止后退使第一顶管机堵住洞门，待混合浆液凝固，退出第一顶管机；始发井恢复第二顶管机顶进，并顶进至接收井接收。通过在接收井利用第一顶管机反向破除硬岩，再将第一顶管机拖出，边拖边注浆，从而实现硬岩的破除，保证大截面第二顶管机能正常顶进，保证工程顺利进行。
Pipe-jacking tunneling construction method for hard rock stratum
一种硬岩地层顶管掘进施工方法
ZHONG XIANQI (author) / TANG WENTAO (author) / ZHANG XINHUA (author) / LI DONGHUI (author) / WANG TING (author) / LAN ZEXIN (author) / GUO HANQING (author) / XU CHANG (author) / ZHAO HONGPENG (author) / XIE YINHUI (author)
2023-08-29
Patent
Electronic Resource
Chinese
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