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Method for filling underground cavity of bedrock stratum through filler grouting and hydraulic filling device

An underground cavity and hydraulic filling technology, applied in underground chambers, shaft equipment, earthwork drilling and mining, etc., can solve problems such as ground subsidence and hidden safety hazards

Inactive Publication Date: 2020-08-14
HEBEI CONSTR & INVESTIGATION RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If these abandoned underground spaces are not dealt with, there will be huge safety hazards, and it will also cause a series of environmental problems such as ground subsidence.

Method used

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  • Method for filling underground cavity of bedrock stratum through filler grouting and hydraulic filling device
  • Method for filling underground cavity of bedrock stratum through filler grouting and hydraulic filling device
  • Method for filling underground cavity of bedrock stratum through filler grouting and hydraulic filling device

Examples

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Effect test

Embodiment 1

[0057] Tangshan City is located in a shallow buried area with developed karst fissures. Historically, dynamic changes in groundwater have damaged the Quaternary overburden structure to varying degrees, and many karst collapses have occurred. The Tangshan City Stadium Karst Collapse Geological Disaster Control Project adopts the method described in the present invention to implement karst collapse control, and takes the J2 karst control hole as an example to illustrate the implementation process of the method for filling the covered karst cave with filler grouting in the present invention.

[0058] The karst survey shows that the Quaternary covering soil layer at the J2 hole is 39.8m thick, the bedrock is underneath it, and the cave is at 45.1-55.7m, and there is no filling in the cave.

[0059] (1) Determine the location of the drill hole: This project uses the survey hole during the karst survey, and the drill hole is arranged directly above the karst cave.

[0060] (2) Drill...

Embodiment 2

[0070] The goaf management area of ​​Senze Coal and Aluminum Co., Ltd. is located in Liulin County, Shanxi Province. The management area is about 150m long from east to west and about 45m wide from north to south. It is a roadway excavated for private bauxite mining in the 1990s. Due to the subsidence of the roadway, subsidence has occurred on the surface, resulting in cracks in the road and cracks in the mountain. Adopt the method described in the present invention to carry out treatment, according to the design scheme, carry out filler grouting treatment to the treatment area that has been found out (preliminary layout hole 14, motorized hole 3). Taking Z3 governance hole as an example to illustrate the implementation process of the method of the present invention.

[0071] The hole at the Z3 hole is a mining roadway, and the roadway direction is basically north-south. The roadway section is horseshoe-shaped, with a height of about 2.0m, a width of about 2.0m, and a buried d...

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Abstract

The invention relates to the technical field of karst cave filling, provides a method for filling an underground cavity of a bedrock stratum through filler grouting, and particularly relates to a filling method of a deep-covering type (burial depth is larger than 30.0 meters) large-space karst cave and a roadway. The method comprises the steps of determining a drilling position, drilling a covering soil layer, arranging a conveying casing pipe, drilling a bedrock section, filling by a hydraulic filling method and grouting. According to the method, the underground cavity is filled with the gravel material through the hydraulic filling method, then grouting is conducted, the filled gravel material is solidified, and the integrity of the filling material is improved; and the filled gravel materials can occupy the space in the underground cavity, the grouting amount is greatly reduced, the treatment cost is reduced, a connecting channel between the cavity and the outside of the cavity canbe blocked or reduced, the filling treatment effect of the underground cavity is improved, and the filling treatment problem of the deep covering type large-space karst cave and the roadway is solved.The invention further provides a hydraulic filling device, the hydraulic filling device is used for filling the underground cavity with gravel materials, the filling speed is high, and the filling effect is good.

Description

technical field [0001] The invention relates to the technical field of filling underground cavities, in particular to a method for filling underground cavities in a bedrock layer by filler grouting and a hydraulic filling device. Background technique [0002] The fissures in the soluble rocks in the karst development area are well developed. Under certain hydrodynamic conditions, soil caves will gradually form in the covering soil layer above the covering karst caves. The further development of soil caves will affect the stability of the foundation and the structures on it. Safe to use. In order to prevent the development of karst caves and soil caves from harming the buildings (structures) above them, the method of pouring (injecting) cement slurry, mortar, concrete and other materials into the caves is often used to fill the caves, block the groundwater runoff channels, and prevent the karst caves from The purpose of roof collapse and improving the stability of the founda...

Claims

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Application Information

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IPC IPC(8): E02D3/12E21D11/10
CPCE02D3/12E21D11/10
Inventor 聂庆科王国辉李友东刘双辰高春乐陈军红林明赫梁学鹏刘帅陈玉国范晖红张川庞冬伟朱凯云陈佳锡
Owner HEBEI CONSTR & INVESTIGATION RES INST
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