Processing method for high-pressure water-enriched filling karst cavity

A treatment method and technology for dissolving cavities, applied in the field of high-pressure water-rich filling dissolving cavities, can solve problems such as grouting blind areas or freezing blind areas, water inrush, mud inrush, hidden dangers in tunnel construction, etc., so as to improve safety. and reliability, and the effect of improving construction efficiency

Inactive Publication Date: 2010-03-17
铁道部工程管理中心
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Problems solved by technology

[0004] Among the engineering measures to deal with the high-pressure water-rich filling dissolution cavity in the prior art, the grouting method or the freezing method are concealed construction methods, which control the pressure in the filling dissolution cavity to resist the Water and soil pressure, however, because the above-mentioned construction method is greatly affected by stratum heterogeneity, material selection and technical level, it

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  • Processing method for high-pressure water-enriched filling karst cavity
  • Processing method for high-pressure water-enriched filling karst cavity

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Embodiment Construction

[0029] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0030] The embodiment of the present invention can be applied to tunnel construction under karst landform conditions to treat filling karst cavities, especially to release energy and reduce pressure for high-pressure water-rich filling karst cavities, releasing the water and soil pressure stored in filling karst cavities energy, reduce the impact of water and soil pressure in the filled dissolved cavity on the project during tunnel construction and operation, prevent water and mud inrush, and at the same time ensure the safety and reliability of tunnel construction and improve tunnel construction s efficiency. Specifically, the embodiment of the present invention is described by taking the treatment process of the high-pressure water-rich water-filled dissolution cavity during tunnel construction as an example.

[003...

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Abstract

The invention discloses a processing method for a high-pressure water-enriched filling karst cavity, comprising the steps of finding out a filling karst cavity through a former geologic predicting report, analyzing the karst characteristic of the found filling karst cavity, locking the proximity borderlines of the filling karst cavity according to the analysis result of the karst characteristic ofthe filling karst cavity, opening the filling karst cavity at the proximity borderlines of the filling karst cavity and releasing the water-soil pressure in the filling karst cavity. The technical scheme of the invention can effectively avoid the phenomena of water-inrush and soil-inrush generated in the filling karst cavity by directly decreasing the pressure of the filling karst cavity, and improving the safety and reliability during the tunneling and the tunnel operation.

Description

technical field [0001] The invention relates to the field of tunnels and underground engineering, in particular to a treatment method for a high-pressure water-rich filled dissolved cavity. Background technique [0002] Since about 15% of the terrain on the earth is karst landform, tunnel construction is sometimes carried out under karst geological conditions. Therefore, it is necessary to overcome the influence of karst geology on tunnel construction during the construction process. When a filling dissolved cavity is encountered during construction, due to the large water and soil pressure inside the filled dissolved cavity, if the filled dissolved cavity is not treated, it will cause engineering disasters such as water inrush and mud inrush, making the tunnel construction impossible or Seriously affect the safety of tunnel construction and affect the construction period, especially the possibility of water and mud inrush in the high-pressure water-rich filled solution cavi...

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Application Information

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IPC IPC(8): E21F15/00E21D11/00E21B49/00
Inventor 张梅朱鹏飞黄鸿健张民庆肖广智顾湘生
Owner 铁道部工程管理中心
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