A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Graded grouting method for karst cave
The invention relates to a karst cave graded grouting method which comprises the following steps: step 1, drilling in a detection area: drilling in the detection area to form a detection hole group; the manhole group comprises a plurality of edge manholes and a plurality of grouting holes, and the bottoms of the grouting holes are communicated with the karst cave; step 2, karst cave grouting: filling liquid is injected into the karst cave; step 3, sealing the probe hole group: sealing the probe hole group; step four, grouting effect detection: step one, drilling and coring are adopted, and a compression test and a consolidation fast shear test are carried out; and 2, carrying out an in-situ standard penetration test. According to the grouting method, the hole diameter and the karst cave type are used as classification standards, and a pressure grouting method is adopted for filling and reinforcing full-filled karst caves with the hole diameter larger than 3 m and karst caves with the hole diameter smaller than 3 m; for the non-filled karst cave and the semi-filled karst cave with the cave diameter larger than 3 m, sand throwing or gravel treatment is conducted firstly, and then a pressure grouting method is adopted for filling and reinforcing; the grouting modes are diversified, the construction efficiency is high, and the construction cost is low.
本发明涉及一种溶洞分级注浆方法，包括以下步骤：步骤一、探测区域钻孔：在探测区域内进行钻孔，形成探孔组；探孔组包括若干边缘探孔和若干注浆孔，注浆孔的底部与溶洞连通；步骤二、溶洞注浆：向溶洞内注入填充液；步骤三、封闭探孔组：对探孔组进行封孔；步骤四、注浆效果检测：第一步：采用钻孔取芯，进行抗压试验以及固结快剪试验；第二步：进行原位标贯试验。本注浆方法以洞径和溶洞类型作为分类标准，对于洞径大于3m的全填充溶洞和洞径小于3m的溶洞，采用压力注浆的方法进行填充加固；对于洞径大于3m且无填充溶洞和半填充溶洞，先进行投砂或碎石处理，再采用压力注浆的方法进行填充加固；注浆方式多样，施工效率高，施工成本低。
Graded grouting method for karst cave
The invention relates to a karst cave graded grouting method which comprises the following steps: step 1, drilling in a detection area: drilling in the detection area to form a detection hole group; the manhole group comprises a plurality of edge manholes and a plurality of grouting holes, and the bottoms of the grouting holes are communicated with the karst cave; step 2, karst cave grouting: filling liquid is injected into the karst cave; step 3, sealing the probe hole group: sealing the probe hole group; step four, grouting effect detection: step one, drilling and coring are adopted, and a compression test and a consolidation fast shear test are carried out; and 2, carrying out an in-situ standard penetration test. According to the grouting method, the hole diameter and the karst cave type are used as classification standards, and a pressure grouting method is adopted for filling and reinforcing full-filled karst caves with the hole diameter larger than 3 m and karst caves with the hole diameter smaller than 3 m; for the non-filled karst cave and the semi-filled karst cave with the cave diameter larger than 3 m, sand throwing or gravel treatment is conducted firstly, and then a pressure grouting method is adopted for filling and reinforcing; the grouting modes are diversified, the construction efficiency is high, and the construction cost is low.
本发明涉及一种溶洞分级注浆方法，包括以下步骤：步骤一、探测区域钻孔：在探测区域内进行钻孔，形成探孔组；探孔组包括若干边缘探孔和若干注浆孔，注浆孔的底部与溶洞连通；步骤二、溶洞注浆：向溶洞内注入填充液；步骤三、封闭探孔组：对探孔组进行封孔；步骤四、注浆效果检测：第一步：采用钻孔取芯，进行抗压试验以及固结快剪试验；第二步：进行原位标贯试验。本注浆方法以洞径和溶洞类型作为分类标准，对于洞径大于3m的全填充溶洞和洞径小于3m的溶洞，采用压力注浆的方法进行填充加固；对于洞径大于3m且无填充溶洞和半填充溶洞，先进行投砂或碎石处理，再采用压力注浆的方法进行填充加固；注浆方式多样，施工效率高，施工成本低。
Graded grouting method for karst cave
一种溶洞分级注浆方法
DU WENLI (author) / LIU GUIDONG (author) / XUN BEIBEI (author) / SUN BAOXIN (author) / WANG SHENGYUAN (author) / SUN WEIDONG (author) / WANG HAIPENG (author) / GUO QING (author) / LIANG XING (author) / CHEN XINWEI (author)
2023-11-28
Patent
Electronic Resource
Chinese
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