Open channel section construction system and method adopting layer-by-layer drainage method

A technology of drainage system and open channel, which is applied in drainage, mining equipment, earth-moving drilling, etc., can solve the problems of sand layer collapse in the open channel section, poor quality of open channel construction, and difficulty in actual construction, so as to avoid sand gushing and collapse. , The effect of reducing drainage costs and improving the construction environment of open troughs

Pending Publication Date: 2022-03-25
CHINA COAL NO 3 CONSTR GRP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the actual construction process, the staff gradually discovered that during the drainage process of the traditional concentrated dewatering method or the construction dewatering well method, due to the extremely loose sand layer group in the open channel section in some areas, the consolidation capacity is poor, the water permeability is strong, and the compression performance is large , low strength, and cross stability make the construction quality of the open channel poor. During the construction process, the sand layer of the open channel often collapses in a large area, making the actual construction more difficult.

Method used

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  • Open channel section construction system and method adopting layer-by-layer drainage method
  • Open channel section construction system and method adopting layer-by-layer drainage method
  • Open channel section construction system and method adopting layer-by-layer drainage method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The open channel construction section of the auxiliary inclined shaft shaft of a project;

[0042] Target geological conditions: According to geological data, the excavation water inflow in the open channel section of the project is about 255m3 / h. The sand layer group in the open channel section of the project is extremely loose, with poor consolidation capacity, strong water permeability, high compressibility, and low strength. stability cross.

[0043] construction process:

[0044] Due to the geological characteristics of the construction target, the traditional concentrated dewatering method or construction dewatering well method has the risk of sand layer collapse in a large area of ​​the open channel section, which cannot meet the construction requirements of the open channel construction section; Drainage construction method, control the water content of the sand layer outside the construction section of the open channel, avoid the occurrence of sand gushing and...

Embodiment 2

[0058] The open channel construction section of the auxiliary inclined shaft shaft of a project mine;

[0059] According to geological data, the length of the open channel section of the sand layer in the construction section of this embodiment is 180m, the thickness of the sand layer in the open channel section is 15m, and the water inflow is 80m 3 / h.

[0060] construction process:

[0061] Due to the geological characteristics of the construction target, the traditional concentrated dewatering method or construction dewatering well method has the risk of sand layer collapse in a large area of ​​the open channel section, which cannot meet the construction requirements of the open channel construction section; Drainage construction method, control the water content of the sand layer outside the construction section of the open channel, avoid the occurrence of sand gushing and collapse of the sides caused by the opening of the open channel, and improve the construction enviro...

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Abstract

The invention discloses an open channel section construction system and method adopting a layer-by-layer drainage method, and the system comprises construction platforms which are sequentially arranged in the excavation direction, the construction platforms are each of a trapezoidal structure with the wide top and the narrow bottom in the horizontal radial direction, and the arrangement heights of the construction platforms are gradually reduced to form a stepped hierarchical platform structure; a multi-pipe self-priming pump drainage system for drainage of the open channel section is arranged on each construction platform, an inclined face structure is formed from the excavation inlet to the target depth, the open channel section is formed, and the open channel section comprises a plurality of construction layers which are the same as the hierarchical platform structures in number and sequentially constructed in the vertical direction. According to the core thought of the degradation drainage construction system and method for open channel section construction, peripheral water flow of open channel excavation is blocked through special construction measures in the excavation process, and the construction measures comprise step-by-step drainage and step-by-step excavation till the designed excavation size is finally achieved; and finally, the water content of the sand layer in the open channel opening range is effectively controlled.

Description

technical field [0001] The invention relates to the technical field of open channel section construction, in particular to an open channel section construction system and method using a layer-by-layer drainage method. Background technique [0002] At present, some mines in the area mostly use the inclined shaft development method, and the mines are mostly located in desert areas, and the open channel section is in the water-bearing sand layer. The construction drainage often adopts the concentrated precipitation method or the construction precipitation well method. [0003] During the actual construction process, the staff gradually discovered that during the drainage process of the traditional concentrated dewatering method or the construction dewatering well method, due to the extremely loose sand layer group in the open channel section in some areas, the consolidation capacity is poor, the water permeability is strong, and the compression performance is large , low streng...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F16/00
CPCE21F16/00
Inventor 杨明陆鹏举程桦杨仁树牛刚张鲁鲁王松青牛宾刘宁姚直书杨立云黎明镜申五刚马均志杨新文康一强吴百川
Owner CHINA COAL NO 3 CONSTR GRP
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