A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Water-collecting well excavation method
The invention relates to the technical field of underground powerhouse construction, in particular to a water-collecting well excavation method, which reduces the risk of rockburst by releasing crustal stress before excavation, and comprises the following steps: determining an area to be excavated according to crustal stress data obtained by actual measurement; the included angle between the maximum crustal stress direction of the to-be-excavated area and the horizontal plane is smaller than 15 degrees; the oval cavern is excavated in the area to be excavated, the long axis of the oval cavern is horizontal, and the tunneling direction of the oval cavern is located in the horizontal plane; taking the long axis as a parting line and taking the lower half wall of the elliptical cavern as a tunnel face, and forming a plurality of first advanced stress release holes in the tunnel face along an excavation boundary; a first flat bottom groove is excavated downwards from the tunnel face; a plurality of second advanced stress release holes are formed in the groove bottom face of the first flat bottom groove along the excavation boundary; and a second flat-bottom groove is excavated downwards from the groove bottom face of the first flat-bottom groove to form a water collecting well. In the construction process, the stress borne by the generated fracture surface is small, and the risk of rock burst is small.
本发明涉及地下厂房施工技术领域，具体涉及一种集水井开挖方法，通过在开挖前释放地应力的方式来减小岩爆的风险，包括以下步骤：根据实测得到的地应力数据确定待开挖区域，所述待开挖区域的最大地应力方向与水平面的夹角小于15°；在所述待开挖区域内开挖椭圆洞室，其中，椭圆洞室的长轴线水平且其掘进方向位于水平面内；以所述长轴线为分割线并将所述椭圆洞室的下半部墙壁为掌子面，在所述掌子面上沿开挖边界设置多个第一超前应力释放孔；从所述掌子面向下开挖第一平底槽；在所述第一平底槽的槽底面上沿开挖边界设置多个第二超前应力释放孔；从所述第一平底槽的槽底面向下开挖第二平底槽以形成集水井。本发明在施工过程中，产生的断面所受应力小，岩爆的风险小。
Water-collecting well excavation method
The invention relates to the technical field of underground powerhouse construction, in particular to a water-collecting well excavation method, which reduces the risk of rockburst by releasing crustal stress before excavation, and comprises the following steps: determining an area to be excavated according to crustal stress data obtained by actual measurement; the included angle between the maximum crustal stress direction of the to-be-excavated area and the horizontal plane is smaller than 15 degrees; the oval cavern is excavated in the area to be excavated, the long axis of the oval cavern is horizontal, and the tunneling direction of the oval cavern is located in the horizontal plane; taking the long axis as a parting line and taking the lower half wall of the elliptical cavern as a tunnel face, and forming a plurality of first advanced stress release holes in the tunnel face along an excavation boundary; a first flat bottom groove is excavated downwards from the tunnel face; a plurality of second advanced stress release holes are formed in the groove bottom face of the first flat bottom groove along the excavation boundary; and a second flat-bottom groove is excavated downwards from the groove bottom face of the first flat-bottom groove to form a water collecting well. In the construction process, the stress borne by the generated fracture surface is small, and the risk of rock burst is small.
本发明涉及地下厂房施工技术领域，具体涉及一种集水井开挖方法，通过在开挖前释放地应力的方式来减小岩爆的风险，包括以下步骤：根据实测得到的地应力数据确定待开挖区域，所述待开挖区域的最大地应力方向与水平面的夹角小于15°；在所述待开挖区域内开挖椭圆洞室，其中，椭圆洞室的长轴线水平且其掘进方向位于水平面内；以所述长轴线为分割线并将所述椭圆洞室的下半部墙壁为掌子面，在所述掌子面上沿开挖边界设置多个第一超前应力释放孔；从所述掌子面向下开挖第一平底槽；在所述第一平底槽的槽底面上沿开挖边界设置多个第二超前应力释放孔；从所述第一平底槽的槽底面向下开挖第二平底槽以形成集水井。本发明在施工过程中，产生的断面所受应力小，岩爆的风险小。
Water-collecting well excavation method
一种集水井开挖方法
DENG ZHONGWEN (author) / HU HUI (author) / YU CHANG (author) / LI ZHIGUO (author) / LUO QIANKUN (author)
2023-04-21
Patent
Electronic Resource
Chinese
IPC:
E03B
Anlagen oder Verfahren zum Gewinnen, Sammeln oder Verteilen von Wasser
,
INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
Water-collecting well desilting robot and water-collecting well desilting system
| European Patent Office | 2024
| European Patent Office | 2018
Construction method for slope excavation and soil collecting equipment
| European Patent Office | 2024
Construction method of over-excavation water collection well
| European Patent Office | 2020
Hydropower station water-collecting well water surface oil stain collecting device
| European Patent Office | 2023