Pile hole water abrasive drill construction method for karst area

A technology of water mill drilling and pile hole, which is applied in drilling equipment and methods, underground chambers, earthwork drilling, etc. low cost effect

Pending Publication Date: 2021-08-06
CHINA RAILWAY SIXTH GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problem that foundation construction is difficult in bedrock in karst areas, the present invention provides a construction method of pile hole water mill drilling in karst areas

Method used

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  • Pile hole water abrasive drill construction method for karst area
  • Pile hole water abrasive drill construction method for karst area
  • Pile hole water abrasive drill construction method for karst area

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Embodiment Construction

[0031] The present invention will be further described below in conjunction with specific examples.

[0032] A construction method of pile hole water mill drilling in karst areas, such as figure 1 The flow chart shown includes the following steps:

[0033] 1. Pre-construction process:

[0034] (1) Construction preparation: connect the water source and power supply, transport the materials and equipment required for construction in place, prepare the design drawings, and understand the relevant parameters of geological conditions, column diameters, and depths, and provide technical and safety disclosures to the operators , to meet the start-up conditions;

[0035] (2) Surveying and setting out: use the total station to accurately release the position of the anti-slide pile hole, and set up the protective pile so as to control the position of the pile hole during the construction process;

[0036] (3) Excavation of the construction platform: After measuring the pier position ...

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Abstract

The invention discloses a pile hole water abrasive drill construction method for a karst area, and relates to the field of railway or highway construction of complex terrains. The construction method comprises an early-stage construction procedure, a water abrasive drill construction procedure and a protection construction method under special conditions. The early-stage construction procedure comprises the steps of construction preparation, surveying and paying-off, construction platform excavation, pile position locking notch construction and reservoir arrangement. The water abrasive drill construction procedure comprises the steps of water abrasive drill drilling, surrounding rock drilling, middle rock drilling, electric hand drill punching, steel wedge inserting, steel wedge beating and rock splitting, manual slag loading, pile hole correction and construction and formed hole inspection and acceptance of the next cycle. The protection construction method under the special conditions comprises three conditions of rock wall cracking, rock wall collapse and soil cave or karst cave appearing in pile holes. The construction cost is low, and the pile hole retaining wall construction cost can be saved; the process is simple, easy to learn and master, convenient to popularize and high in pore-forming precision; and the problems of cracking, collapse and the like of pile hole wall rock mass are effectively reduced.

Description

technical field [0001] The invention relates to the field of railway or road construction in complex terrain, in particular to a construction method of water mill drilling for pile holes in karst areas. Background technique [0002] With the expansion of the scale of transportation construction in southern my country, the construction environment in the fields of highways, railway projects and municipal pipelines has become increasingly complex, and the Docaster landform in the southwest. The landform is mainly composed of soluble rock formations such as limestone, gypsum, and rock salt. Due to the erosion of groundwater flow all year round, eroded grooves or caves are gradually formed. The geological conditions in karst areas are relatively complex, and there will be unfavorable geological phenomena such as soil caves and karsts (karst caves, karst ditches, karst troughs), rich groundwater, and even underground river channels. The bedrock in karst areas is dominated by lim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/00E21B7/28E21B21/00E21B21/01E21B25/00E21B33/138E21B41/00E21B47/022E21B47/04E21B47/08E21D11/10E21D11/15E21D20/02E21D21/00
CPCE21B7/00E21B7/28E21B21/00E21B21/01E21B25/00E21B33/138E21B41/00E21B47/022E21B47/04E21B47/08E21D11/10E21D11/152E21D20/02E21D21/0026
Inventor 任建新李玉荣王振左旭杨向军关军王蕾王国龙乔延辉王振旭吕双年方健伟李建鑫杨浩月
Owner CHINA RAILWAY SIXTH GRP CO LTD
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