Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Inverted-step type vertical shaft structure and blowout relieving method thereof
The invention relates to an inverted-step type vertical shaft structure and a blowout relieving method thereof. A vertical shaft is arranged at the top of an underground pipeline and communicates withthe underground pipeline and the ground surface, and a well lid is arranged at the top of the vertical shaft. The appearance of one side of the vertical shaft is in a step shape and is mirrored alongthe axis of an opening, the width of steps is larger than the width of the underground pipeline, and the steps can be integrally formed or assembled. The first-level step of the steps of the verticalshaft is flushed with the ground surface, and a cylinder is dug in the center and serves as the vertical shaft opening; the last-level step is linked with the top of the underground pipeline, and thegradient of the middle steps ranges from 30 degrees to 60 degrees; and backfill materials are arranged on the steps to be flushed with the ground surface. According to the inverted-step type verticalshaft structure and the blowout relieving method thereof, a driving pressure difference value forming a blowout is leveled, the well lid is provided with ventilation holes to communicate with the underground pipeline and the ground atmosphere, the nonconstant air pressure in the vertical shaft and the underground pipeline is balanced, the air pressure in the pipeline is balanced in advance, a driving pressure difference extreme value forming the blowout phenomenon leveled, and formation of the blowout occurring condition is effectively suppressed.
本发明涉及一种倒台阶式竖井结构及其井喷减免方法，竖井设置于地下管道顶部，连通地下管道与地面，井盖设置于竖井顶部。所述竖井一侧外形为台阶状，并沿洞口轴线镜像，台阶宽度大于地下管道宽度，可整体成型亦可组装。所述竖井台阶第一级台阶与地面齐平，中心挖出一圆柱体，为竖井口；最后一级台阶与地下管道顶部衔接，中间台阶坡度为30°至60°为；台阶上方回填料与地面齐平。本发明坦化形成井喷的驱动压力差值，井盖设置通气孔连通地下管道与地面大气，平衡竖井和地下管道内的非恒定气压，提前平衡管道内气压，坦化形成井喷现象的驱动压力差极值，有效抑制井喷发生条件形成。
Inverted-step type vertical shaft structure and blowout relieving method thereof
The invention relates to an inverted-step type vertical shaft structure and a blowout relieving method thereof. A vertical shaft is arranged at the top of an underground pipeline and communicates withthe underground pipeline and the ground surface, and a well lid is arranged at the top of the vertical shaft. The appearance of one side of the vertical shaft is in a step shape and is mirrored alongthe axis of an opening, the width of steps is larger than the width of the underground pipeline, and the steps can be integrally formed or assembled. The first-level step of the steps of the verticalshaft is flushed with the ground surface, and a cylinder is dug in the center and serves as the vertical shaft opening; the last-level step is linked with the top of the underground pipeline, and thegradient of the middle steps ranges from 30 degrees to 60 degrees; and backfill materials are arranged on the steps to be flushed with the ground surface. According to the inverted-step type verticalshaft structure and the blowout relieving method thereof, a driving pressure difference value forming a blowout is leveled, the well lid is provided with ventilation holes to communicate with the underground pipeline and the ground atmosphere, the nonconstant air pressure in the vertical shaft and the underground pipeline is balanced, the air pressure in the pipeline is balanced in advance, a driving pressure difference extreme value forming the blowout phenomenon leveled, and formation of the blowout occurring condition is effectively suppressed.
本发明涉及一种倒台阶式竖井结构及其井喷减免方法，竖井设置于地下管道顶部，连通地下管道与地面，井盖设置于竖井顶部。所述竖井一侧外形为台阶状，并沿洞口轴线镜像，台阶宽度大于地下管道宽度，可整体成型亦可组装。所述竖井台阶第一级台阶与地面齐平，中心挖出一圆柱体，为竖井口；最后一级台阶与地下管道顶部衔接，中间台阶坡度为30°至60°为；台阶上方回填料与地面齐平。本发明坦化形成井喷的驱动压力差值，井盖设置通气孔连通地下管道与地面大气，平衡竖井和地下管道内的非恒定气压，提前平衡管道内气压，坦化形成井喷现象的驱动压力差极值，有效抑制井喷发生条件形成。
Inverted-step type vertical shaft structure and blowout relieving method thereof
一种倒台阶式竖井结构及其井喷减免方法
WANG FANGFANG (Autor:in) / WU SHIQIANG (Autor:in) / WU XIUFENG (Autor:in) / DAI JIANGYU (Autor:in) / GAO ANG (Autor:in) / YANG QIANQIAN (Autor:in) / ZHANG YU (Autor:in) / HUANG BIAO (Autor:in) / WANG XIAODONG (Autor:in) / CUI PENGFEI (Autor:in)
25.09.2020
Patent
Elektronische Ressource
Chinesisch
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