摘 要在岩溶地区，经济发展规模大，人口增长迅速，建设项目、公路、铁路、

Abstract <br>in karst areas, large-scale economic development, rapid population growth, construction projects, roads, railways, airports, engineering, bridges, high-rise buildings and other water conservancy construction of more and more people's attention. Lurking in Wuhan karst erosion surface are hidden beneath the river alluvium. Karst less erosion surface morphology. The main method of investigation is a comprehensive geological survey, drilling, geophysical, hydrological testing, laboratory experiments and so on. Construction technology applied to pile in karst region. Pile construction conducted in karst areas of connectivity karst, height, nature of the filling in the gap cave groundwater plays a decisive role. In the pile foundation construction method of Karst Area suitable artificial bored pile, pile and two holes drilled into the mass of the impact evaluation techniques and pore pile foundation pile must integrity and strength of concrete piles of the pile group comprising aspect. <br><br>Keywords: karst; Construction Technology: Quality rating: pile foundation: Pile Foundation Construction

Excerpts In karst areas, the scale of economic development, rapid population growth, construction projects, roads, railways, airports, engineering, bridges, high-rise buildings and other water conservancy construction has been more and more attention. The latent soluble erosion surface in Wuhan is hidden under the alluvial layer of the river surface. There are few karst forms under the erosion surface. Its main survey methods are comprehensive geological survey, drilling, prospecting, hydrologic testing, indoor experiments and so on. It is suitable for the construction technology of piles in karst areas. The piling-based construction in the karst area, the connectivity of karst, the height of the water table, the nature of the filling in the cave gap, etc. played a decisive role.<br><br>The suitable construction methods of pile foundation in karst area include techniques such as artificial drilling hole filling pile, drilling into hole perfusion pile and impact-forming perforation pile, and the quality evaluation of the base pile must include the integrity of the base pile and the concrete strength of the pile. Keywords: karst; Construction technology: quality evaluation: pile foundation: pile-based construction

Abstract<br>In karst areas, with large-scale economic development and rapid population growth, water conservancy construction projects, highways, railways, airports, projects, bridges, high-rise buildings and other water conservancy construction have also attracted more and more attention. The erosion surface of the latent karst in Wuhan area is hidden under the river alluvium. There are few karst forms under the erosion surface. The main exploration methods are comprehensive geological survey, drilling, geophysical exploration, hydrological test, indoor experiment, etc. It is suitable for pile construction in karst area. The pile foundation construction in karst area, the connectivity of karst, the height of groundwater level, and the nature of the filler in the gap between caves play a decisive role. The suitable construction methods of pile foundation in karst area include manual hole digging and pouring pile, drilling hole pouring pile and percussion hole forming and pouring pile. The quality evaluation of pile must include the integrity of pile and the concrete strength of pile body.<br>Key words: karst; construction technology: Quality Evaluation: pile foundation: pile foundation construction<br>