A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention provides an ultra-deep shaft jacking construction method which comprises the following steps: performing MJS high-pressure jet grouting reinforcement on undisturbed soil in a shaft construction area to a first preset depth; an anti-pulling component is arranged in the middle of the reinforcing area of the MJS reinforcing area to reach a second preset depth; a vertical pipe-jacking tunneling machine is installed in the vertical direction in the shaft construction area, a jack of the vertical pipe-jacking tunneling machine jacks to drive the anti-pulling component to be stressed upwards in the vertical direction, and pulling force generated between the anti-pulling component and the MJS reinforcing area provides reverse thrust for jacking of the vertical pipe-jacking tunneling machine; after the vertical pipe-jacking tunneling machine vertically and downwards jacks for a preset distance, a pipe joint is installed on the inner wall of a shaft; and the vertical pipe jacking tunneling machine is dismantled and hoisted out, and bottom sealing construction is conducted. According to the method, the soil body in the shaft construction area is reinforced through MJS high-pressure rotary jet grouting, the influence of construction on the surrounding environment is reduced, the construction period is greatly shortened, and compared with a construction method adopted at present, the construction procedure is simpler and more convenient, and the cost is lower.
本发明提供了一种超深井筒顶进施工方法，包括如下步骤：对井筒施工区域内的原状土进行MJS高压旋喷注浆加固，加固至第一预设深度；在MJS加固区域的加固区域中间部位打设抗拔构件至第二预设深度；在井筒施工区域内的竖向方向上安装竖向顶管掘进机，竖向顶管掘进机的千斤顶顶升带动抗拔构件竖向方向上向上受力，抗拔构件与MJS加固区域之间产生的拉力提供竖向顶管掘进机顶进的反推力；竖向顶管掘进机在竖向向下顶进预设距离后，在井筒内壁处安装管节；将竖向顶管掘进机拆除吊出并进行封底施工。本发明通过MJS高压旋喷注浆加固井筒施工区域土体，减小施工对周边环境的影响，大大减小了施工工期，施工工序较目前采用的施工方法更为简便，成本更低。
The invention provides an ultra-deep shaft jacking construction method which comprises the following steps: performing MJS high-pressure jet grouting reinforcement on undisturbed soil in a shaft construction area to a first preset depth; an anti-pulling component is arranged in the middle of the reinforcing area of the MJS reinforcing area to reach a second preset depth; a vertical pipe-jacking tunneling machine is installed in the vertical direction in the shaft construction area, a jack of the vertical pipe-jacking tunneling machine jacks to drive the anti-pulling component to be stressed upwards in the vertical direction, and pulling force generated between the anti-pulling component and the MJS reinforcing area provides reverse thrust for jacking of the vertical pipe-jacking tunneling machine; after the vertical pipe-jacking tunneling machine vertically and downwards jacks for a preset distance, a pipe joint is installed on the inner wall of a shaft; and the vertical pipe jacking tunneling machine is dismantled and hoisted out, and bottom sealing construction is conducted. According to the method, the soil body in the shaft construction area is reinforced through MJS high-pressure rotary jet grouting, the influence of construction on the surrounding environment is reduced, the construction period is greatly shortened, and compared with a construction method adopted at present, the construction procedure is simpler and more convenient, and the cost is lower.
本发明提供了一种超深井筒顶进施工方法，包括如下步骤：对井筒施工区域内的原状土进行MJS高压旋喷注浆加固，加固至第一预设深度；在MJS加固区域的加固区域中间部位打设抗拔构件至第二预设深度；在井筒施工区域内的竖向方向上安装竖向顶管掘进机，竖向顶管掘进机的千斤顶顶升带动抗拔构件竖向方向上向上受力，抗拔构件与MJS加固区域之间产生的拉力提供竖向顶管掘进机顶进的反推力；竖向顶管掘进机在竖向向下顶进预设距离后，在井筒内壁处安装管节；将竖向顶管掘进机拆除吊出并进行封底施工。本发明通过MJS高压旋喷注浆加固井筒施工区域土体，减小施工对周边环境的影响，大大减小了施工工期，施工工序较目前采用的施工方法更为简便，成本更低。
Ultra-deep shaft jacking construction method
一种超深井筒顶进施工方法
2023-01-13
Patent
Electronic Resource
Chinese
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