Rotary drilling rig operation platform for upper-soft lower-hard stratum and construction method thereof

A technology for operating platforms and rotary drilling rigs, which is applied to drilling equipment and methods, drilling equipment, earthwork drilling and mining, etc. It can solve the problems of irreconcilable installation errors, poor universality of concrete structures, and poor applicability of different pile positions, etc., to achieve increased Overall load-bearing area, the effect of reducing the stress of the base

Active Publication Date: 2021-05-25
NINGBO MUNICIPAL ENG CONSTR GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, engineering practice shows that concrete structures are facing the dilemma of "poor versatility" and "poor applicability":
[0011] 1) The drilling position of the prefabricated platform is relatively fixed, and the applicability to different pile positions is poor;
[0012] 2) The prefabricated structures are connected by PBL keys. When the diameter of the reserved hole is 50% larger than the diameter of the pin, it is still impossible to reconcile the on-site installation error (uneven settlement of the foundation, prefabricated slabs), and increase the cost of repeated use. difficulty

Method used

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  • Rotary drilling rig operation platform for upper-soft lower-hard stratum and construction method thereof
  • Rotary drilling rig operation platform for upper-soft lower-hard stratum and construction method thereof
  • Rotary drilling rig operation platform for upper-soft lower-hard stratum and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] In this embodiment, the prefabricated platform adopts an all-steel box structure, and a rotary excavator crawler area III is provided on the top surface of the box along the length direction.

[0079] 1.1.1 All steel box structure

[0080] In the double-raft system operating platform I, the area of ​​the single prefabricated platform is relatively large, reaching 24-36m 2 , in order to balance "structural rigidity" and "hoisting weight", the prefabricated platform described in this embodiment adopts an all-steel box structure. the reason is:

[0081] A: The upper limit of the hoisting weight of the temporary measure structure is 18 tons, that is, the maximum weight that can be hoisted by a single 75-ton truck crane within a 6m operating radius - the weight of the measure structure exceeds 18 tons, which means that the truck crane needs to be increased in the project site. Specifications (the hoisting time of a single panel is short, and the crane is purely used for th...

Embodiment 2

[0173] The difference between this embodiment and Embodiment 1 is that the all-steel prefabricated platform different from that described in Embodiment 1 is used instead of a steel-concrete prefabricated platform. Specifically, the steel-concrete prefabricated platform is a closed box structure, It includes a concrete panel and a box-shaped steel support structure; the concrete panel is connected to the box-shaped steel support structure through welding studs 1-4;

[0174] The inner cavity of the steel-concrete prefabricated platform is set as a plurality of interconnected compartments along the length extension direction, and at the same time, the steel-concrete prefabricated platform is provided with a number of diversion holes a3-2 at both ends in the length direction;

[0175] The concrete panel is provided with a maintenance manhole 6-1 corresponding to each compartment, and the maintenance manhole 6-1 is sealed through the maintenance cover; meanwhile, the concrete panel ...

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Abstract

The invention discloses a rotary drilling rig operation platform for an upper-soft lower-hard stratum and a construction method thereof. The rotary drilling rig operation platform comprises a rotary drilling operation platform, and the rotary drilling operation platform is a double-raft system operation platform; the double-raft system operation platform comprises a first prefabricated platform and a second prefabricated platform which are parallel to each other and arranged in a spaced mode, a spacing area between the first prefabricated platform and the second prefabricated platform is of a closed box type structure, and a rotary drilling machine crawler belt area is arranged on the surface of a box top in the length direction; and a slurry circulating system can be formed between the prefabricating platform and the target rotary drilling operation area. Therefore, in the low-base stress area, cross beam connecting assemblies are arranged at the two transverse ends correspondingly, so that a closed target rotary drilling operation area is defined; the connection mode between the cross beam connecting assemblies and the prefabricated platform is a detachable connection mode; and the prefabricating platform has the force characteristic, meanwhile, the civilized construction requirement is met, and in addition, the rotary drilling rig operation platform has good universality.

Description

technical field [0001] The invention discloses an operating platform of a rotary drilling rig for upper soft and lower hard strata and a construction method thereof, which is mainly used for rotary digging drilling operations in upper soft and lower hard strata with high requirements for on-site civilized construction, and belongs to the technical field of engineering construction. Background technique [0002] With the increasing urbanization of our country and the steady increase of urban population, urban expressway has become an important means to solve urban traffic congestion. The common urban expressways in China adopt “ground road + main line elevated”, and the cap of the main line elevated is located in the central separation zone of the ground road (this area is not suitable for the pond dregs filling scheme, because there are pond dregs filling, residual square abandon double cost pressures). Under normal circumstances, the construction scale of urban expressways...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B15/00E21B7/02E21B21/00E02D5/34
CPCE21B15/00E21B7/026E21B21/00E02D5/34
Inventor 徐声亮陈巨峰林函
Owner NINGBO MUNICIPAL ENG CONSTR GROUP
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