A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Roadbed karst collapse comprehensive renovation method
The invention discloses a roadbed karst collapse comprehensive renovation method which comprises the following steps: 1, geology in a line range is explored, and karst development conditions are determined in combination with drilling coring and a pressurized-water test; 2, inclined holes and straight holes are drilled in the karst section, the inclined holes are formed in one row on each side ofthe line and obliquely drilled towards the center of the line, and the straight holes are formed in two rows on each side of the line and located in the outer sides of the inclined holes; 3, after drilling is completed, grouting pipes and grout return pipes are arranged for the inclined holes and the straight holes, and hole sealing is conducted; and 4, conducting pressure grouting on the inclinedholes and the straight holes. According to the method, soil cracks and karst caves under the roadbed surface are filled through inclined hole grouting, and roadbed surface collapse under the action of train loads is prevented; the problem of subgrade surface collapse caused by soil body fine material loss due to dynamic water change is solved through straight hole waterproof curtain grouting, thesubgrade karst treatment effect is remarkable, the construction cost is low, the period is short, and the influence on existing railway operation is small.
本发明公开了一种路基岩溶塌陷综合整治方法，包括以下步骤：步骤一、对线路范围内的地质进行勘探，并结合钻孔取芯和压水试验，确定岩溶发育情况；步骤二、在岩溶地段钻设斜孔和直孔，所述斜孔为线路每侧一排且朝向线路中心倾斜钻设，所述直孔为线路每侧两排且位于斜孔外侧；步骤三、钻孔完成后对斜孔和直孔设置注浆管及回浆管并进行封孔；步骤四、对斜孔和直孔进行压力注浆。本发明通过斜孔注浆对路基面下土体裂隙和岩溶洞穴进行了填充，防止了列车荷载作用下的路基面塌陷；而直孔止水帷幕注浆解决了动态水变化导致土体细料流失引起的路基面塌陷问题，对路基岩溶治理效果显著，施工成本低，周期短，对既有铁路运营影响较小。
Roadbed karst collapse comprehensive renovation method
The invention discloses a roadbed karst collapse comprehensive renovation method which comprises the following steps: 1, geology in a line range is explored, and karst development conditions are determined in combination with drilling coring and a pressurized-water test; 2, inclined holes and straight holes are drilled in the karst section, the inclined holes are formed in one row on each side ofthe line and obliquely drilled towards the center of the line, and the straight holes are formed in two rows on each side of the line and located in the outer sides of the inclined holes; 3, after drilling is completed, grouting pipes and grout return pipes are arranged for the inclined holes and the straight holes, and hole sealing is conducted; and 4, conducting pressure grouting on the inclinedholes and the straight holes. According to the method, soil cracks and karst caves under the roadbed surface are filled through inclined hole grouting, and roadbed surface collapse under the action of train loads is prevented; the problem of subgrade surface collapse caused by soil body fine material loss due to dynamic water change is solved through straight hole waterproof curtain grouting, thesubgrade karst treatment effect is remarkable, the construction cost is low, the period is short, and the influence on existing railway operation is small.
本发明公开了一种路基岩溶塌陷综合整治方法，包括以下步骤：步骤一、对线路范围内的地质进行勘探，并结合钻孔取芯和压水试验，确定岩溶发育情况；步骤二、在岩溶地段钻设斜孔和直孔，所述斜孔为线路每侧一排且朝向线路中心倾斜钻设，所述直孔为线路每侧两排且位于斜孔外侧；步骤三、钻孔完成后对斜孔和直孔设置注浆管及回浆管并进行封孔；步骤四、对斜孔和直孔进行压力注浆。本发明通过斜孔注浆对路基面下土体裂隙和岩溶洞穴进行了填充，防止了列车荷载作用下的路基面塌陷；而直孔止水帷幕注浆解决了动态水变化导致土体细料流失引起的路基面塌陷问题，对路基岩溶治理效果显著，施工成本低，周期短，对既有铁路运营影响较小。
Roadbed karst collapse comprehensive renovation method
一种路基岩溶塌陷综合整治方法
ZHANG SHUO (author) / LIU ZHAOJING (author) / HUANG YINING (author) / TAN LIXIN (author) / HUANG SHENGPING (author) / JING TAO (author) / CHU YUGUANG (author) / WANG ZHIMENG (author) / LI JUN (author) / XIAO CHAOQIAN (author)
2020-08-07
Patent
Electronic Resource
Chinese
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