A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Karst cave detection and large-flow inrush plugging method
The invention relates to a karst cave detection and large-flow inrush plugging method, which comprises the following steps of: detecting an underground medium resistivity abnormal area by adopting an ultra-high density electrical method, drilling and checking a karst cave along the boundary of the resistivity abnormal area so as to determine an accurate range and an extension path of the plane distribution of the karst cave, and on the basis of piling up a back pressure platform by taking an inrush point as a center, carrying out large-flow inrush plugging on the karst cave. And drilling and grouting are carried out in the sequence of first outside the foundation pit, then back-pressing the platform and finally in the middle of the bottom of the foundation pit along the karst cave path, and three interception grouting curtains are arranged to block a karst cave water gushing channel. The method has the beneficial effects that the distribution range and the extension path of the karst cave plane can be accurately positioned by combining an ultra-high density electrical method and a drilling method, so that the karst cave is grouted, intercepted and plugged in a targeted manner, the drilling grouting quantity is greatly reduced, and the use of grouting materials is reduced; drilling grouting is conducted outside the foundation pit, then the platform is subjected to back pressure and finally in the middle of the bottom of the foundation pit, the water plugging success rate can be effectively increased, the water plugging emergency rescue time is shortened, and engineering losses are reduced.
本发明涉及一种溶洞探测及大流量突涌封堵方法，包括采用超高密度电法探测地下介质电阻率异常区域，沿电阻率异常区域边界钻探查验溶洞，以此确定溶洞平面分布的精确范围和延伸路径，在以突涌点为中心堆砌反压平台的基础上，沿溶洞路径按先基坑外、再反压平台、最后基坑底中间的顺序进行钻孔灌浆，设置3道拦截灌浆帷幕阻断溶洞涌水通道。本发明的有益效果在于：结合超高密度电法和钻探法，能够精确定位溶洞平面的分布范围和延伸路径，由此针对性地对溶洞分段灌浆截流堵水，大幅减少钻孔注浆数量，降低灌浆材料的使用；通过先基坑外、再反压平台、最后基坑底中间的顺序进行钻孔灌浆，能有效提高堵水成功率，缩短堵水抢险时间，减少工程损失。
Karst cave detection and large-flow inrush plugging method
The invention relates to a karst cave detection and large-flow inrush plugging method, which comprises the following steps of: detecting an underground medium resistivity abnormal area by adopting an ultra-high density electrical method, drilling and checking a karst cave along the boundary of the resistivity abnormal area so as to determine an accurate range and an extension path of the plane distribution of the karst cave, and on the basis of piling up a back pressure platform by taking an inrush point as a center, carrying out large-flow inrush plugging on the karst cave. And drilling and grouting are carried out in the sequence of first outside the foundation pit, then back-pressing the platform and finally in the middle of the bottom of the foundation pit along the karst cave path, and three interception grouting curtains are arranged to block a karst cave water gushing channel. The method has the beneficial effects that the distribution range and the extension path of the karst cave plane can be accurately positioned by combining an ultra-high density electrical method and a drilling method, so that the karst cave is grouted, intercepted and plugged in a targeted manner, the drilling grouting quantity is greatly reduced, and the use of grouting materials is reduced; drilling grouting is conducted outside the foundation pit, then the platform is subjected to back pressure and finally in the middle of the bottom of the foundation pit, the water plugging success rate can be effectively increased, the water plugging emergency rescue time is shortened, and engineering losses are reduced.
本发明涉及一种溶洞探测及大流量突涌封堵方法，包括采用超高密度电法探测地下介质电阻率异常区域，沿电阻率异常区域边界钻探查验溶洞，以此确定溶洞平面分布的精确范围和延伸路径，在以突涌点为中心堆砌反压平台的基础上，沿溶洞路径按先基坑外、再反压平台、最后基坑底中间的顺序进行钻孔灌浆，设置3道拦截灌浆帷幕阻断溶洞涌水通道。本发明的有益效果在于：结合超高密度电法和钻探法，能够精确定位溶洞平面的分布范围和延伸路径，由此针对性地对溶洞分段灌浆截流堵水，大幅减少钻孔注浆数量，降低灌浆材料的使用；通过先基坑外、再反压平台、最后基坑底中间的顺序进行钻孔灌浆，能有效提高堵水成功率，缩短堵水抢险时间，减少工程损失。
Karst cave detection and large-flow inrush plugging method
一种溶洞探测及大流量突涌封堵方法
TANG MENGXIONG (author) / LIU CHUNLIN (author) / LI BO (author) / HU HESONG (author)
2024-07-26
Patent
Electronic Resource
Chinese
Foundation pit inrush karst cave path approaching searching drilling positioning method
| European Patent Office | 2024
Grouting plugging method suitable for large karst cave under high-flow-speed flowing water condition
| European Patent Office | 2021
Large-flow karst pipeline type water gushing point grouting plugging method
| European Patent Office | 2020