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Design method of water curtain system for underground water-sealed cavern

A system design and groundwater technology, applied in underground chambers, mining equipment, earthwork drilling and mining, etc., can solve the problems of not considering the optimal design of grouting holes, unreasonable design goals of the water curtain system, and unclear functional positioning of the water curtain system, etc. problems, to achieve the effect of low difficulty in hole-forming construction, reduce construction risks, and ensure the quality of hole-forming

Active Publication Date: 2016-11-09
TSINGHUA UNIV
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Problems solved by technology

[0007] The purpose of the present invention is to provide a design method for the water curtain system of underground water-sealed caverns, which solves the problem of unclear functional positioning of the water curtain system in the current design of underground water-sealed caverns, unreasonable design goals of the water curtain system, and failure to consider the relationship with the grouting hole. Problems of Layout Combined with Optimal Design

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  • Design method of water curtain system for underground water-sealed cavern
  • Design method of water curtain system for underground water-sealed cavern
  • Design method of water curtain system for underground water-sealed cavern

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Embodiment Construction

[0035] The present invention provides a method for designing an underground water-sealed cavern water curtain system. The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] Such as figure 1 As shown, the design method of the underground water-sealed cavern water curtain system provided by the present invention not only includes the design improvement of the conventional water curtain roadway 2, the horizontal water curtain hole 4 and the vertical water curtain hole, but also innovatively proposes Set grouting holes on water curtain roadway 2, and design scheme for pre-grouting treatment of weak rock mass and leakage channels in the main cavern. The specific steps are:

[0037] (1) Carry out detailed geological survey of the area to be built, and set up several main caverns 1 and traffic lanes 3 underground. In particular, the traffic roadway 3 should surround the outside of t...

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Abstract

The invention relates to the technical field of an underground water seal cave depot, in particular to a design method for a water curtain system of an underground water seal cave depot. The method comprises the steps: designing a water curtain roadway after the completion of the design of a main chamber and the design of a traffic roadway; designing a horizontal water direction curtain hole and a vertical direction water curtain hole; carrying out construction reconnaissance on the development condition of a fault fracture zone; after the excavation forming of the water curtain roadway, designing a preprocessing scheme to weak rock mass in the main chamber; carrying out a backup flooding test to all water curtain holes of the roadway after the completion of all water curtain holes of some water curtain roadway; and designing a blocking scheme to seepage channels discovered. According to the design method provided by the invention, the depth of the horizontal direction water curtain hole can be greatly reduced, and the pore-forming construction difficulty is low; furthermore, the preliminary grouting is injected to the weak rock mass in the main chamber through the water curtain roadway, so as to be beneficial for ensuring the construction progress and reducing the construction risk; furthermore, the grouting can be injected to the seepage channels for blocking, and the loss of underground water can be prevented or reduced when the main chamber is excavated, so as to ensure the water seal environment all around the main chamber.

Description

technical field [0001] The invention relates to the technical field of underground water-sealed caverns, in particular to a design method for a water curtain system of an underground water-sealed cavern. Background technique [0002] The underground water-sealed oil storage cavern is to dig a cave below the stable groundwater level, and the cave wall is not lined. The groundwater around the cavern is used to seal the cracks in the rock mass to achieve the purpose of sealing oil. Using groundwater pressure to maintain airtightness is the key to the long-term storage of oil in underground water-sealed caverns, which requires maintaining a sufficiently thick fractured aquifer in the rock mass around the main oil storage chamber, the so-called water-sealed layer. In order to maintain the stability of the water seal layer, it is usually necessary to build a water curtain system to inject water into the rock mass through the water curtain holes to replenish the groundwater and ens...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D13/00E21D13/02
CPCE21D13/00
Inventor 段云岭赵雪峰冯金铭
Owner TSINGHUA UNIV
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