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Carrier pile machine compaction karst cave filler and karst cave filling method

A filling method and filling technology, which are used in filling, construction, infrastructure engineering, etc., can solve the problems of insufficient filling quality, no open karst caves, low efficiency, etc., and ensure the quality of piles and the simplicity of raw materials. high filling efficiency

Inactive Publication Date: 2020-06-26
云南建投第一勘察设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In summary, the existing technical problems in the prior art are: the efficiency of the prior art cave filling method is low, and the filling quality cannot meet the requirements. According to the report, at the same time, it has not disclosed how to carry out the construction method of karst cave filling and what kind of filler to choose. Therefore, the design of the rotary excavator drilling, the implementation of the carrier pile machine filling the karst cave and the selection of suitable fillers can effectively pass the rotary excavator. Fill the cave

Method used

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  • Carrier pile machine compaction karst cave filler and karst cave filling method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of filler for cave filling, the filler is a mixture of gravel, sandstone, backfill clay, cement and fly ash at a ratio of 1:1:3:0.2:0.2, and the content of the soil and stone The amount of water is kept at 15-25%.

[0025] The packing also includes pre-packed flakes.

[0026] The raw materials used are crushed stone, sand, backfill clay, cement and fly ash, which are relatively easy to obtain. The crushed stone and sand are granular, and the filler is fully mixed with powdered backfill clay, cement and fly ash. , has good support, and can fill the gap after pre-filling the rubble, and has good filling performance at the same time.

Embodiment 2

[0028] A method for filling karst caves perforated by a rotary excavator, comprising the following steps:

[0029] Step 1. The rotary excavator drills the hole above the karst cave to the bottom of the karst cave;

[0030] Step 2: Fill the cave layer by layer with flakes, crushed stones, sandstone, backfill clay, cement and fly ash according to the ratio of 1:1:3:0.2:0.2. 15-25%;

[0031] Step 3, using a carrier pile driver to tamp the filler filled in step 2;

[0032] Step 4: Repeat the above step 2 and step 3 to fill the cave layer by layer with filler until it reaches the ground.

[0033] The filling in the cave is filled to a height of 100-150cm per layer, and then filled layer by layer after being compacted and flattened.

[0034] The filling order of the filler is as follows: firstly put in the flakes, and then put in the gravel, sand, backfill clay, cement and fly ash mixed in the ratio of 1:1:3:0.2:0.2.

[0035] Before the rotary excavator is drilled and filled, in...

specific Embodiment approach

[0037] Before construction, investigate the conditions of the caves in the construction area, analyze the size, depth and volume of the caves, and prepare sufficient filling materials in advance;

[0038] That is, the amount of filling required for cave filling is determined by the cave space, and the relevant parameters are pre-calculated and prepared;

[0039] The rotary excavator drills through the formation above the karst cave to the bottom of the karst cave. The drilling of the rotary excavator refers to the operation method of the rotary excavator;

[0040] Then fill the cave layer by layer with flakes, crushed stones, sandstone, backfill clay, cement and fly ash at a ratio of 1:1:3:0.2:0.2. The water content of the soil and stones is kept at 15- 25%;

[0041] The filling order of the filler is as follows: firstly put in the flakes, then put in gravel, sand and gravel, backfill clay, cement and fly ash mixed in 1:1:3:0.2:0.2;

[0042] Use a carrier pile machine to tam...

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Abstract

The invention discloses a carrier pile machine compaction karst cave filler and a karst cave filling method, and relates to the technical field of karst cave filling. According to the karst cave filler, soil mixed stone prepared by mixing stone flakes and broken stone, gravels, backfill clay, cement and fly ash according to a ratio of 1:1:3:0.2:0.2 is used as a filler, drilling is performed by a rotary drilling machine, karst cave is filled to the ground layer by layer through a carrier pile machine, stone flakes are used as bottom, soil mixed stone prepared by mixing broken stone, gravel, backfill clay, cement and fly ash is used for gap filling, and compaction is performed layer by layer. According to the invention, the adopted raw materials are simple and easy to obtain, the used engineering instruments are convenient and conventional, the requirement and specification of karst cave filling can be met after layer-by-layer compaction, the pile forming quality of a karst cave area isensured, the filling efficiency and the pile forming quality are high, and the method is suitable for application and popularization.

Description

technical field [0001] The invention relates to the technical field of karst cave filling, in particular to a karst cave filling material tamped by a carrier pile driver and a karst cave filling method. Background technique [0002] The formation of caves is the result of long-term dissolution of groundwater in limestone areas. The insoluble calcium carbonate in limestone can be converted into slightly soluble calcium bicarbonate by the action of water and carbon dioxide. Because each part of the limestone layer contains different amounts of calcareous matter and is eroded to different degrees, it is gradually dissolved and divided into independent, various, steep and beautiful peaks and karst caves with strange landscapes. The resulting landforms are generally called karst landforms. [0003] At present, for karst-developed areas, the geological structure is complex, especially some caves are multi-layered caves, which are not filled and connected to each other, which has c...

Claims

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Application Information

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IPC IPC(8): C04B28/00E02D15/00E02D15/02E02D17/18
CPCC04B28/00E02D15/00E02D15/02E02D17/18E02D2300/002E02D2300/0037E02D2300/0045C04B14/02C04B14/06C04B14/10C04B18/08
Inventor 刘克文贾荣谷张颖谢林冲孔庆迪沈家仁张伟余建强杨纬卿郭光八李家艳周顺国
Owner 云南建投第一勘察设计有限公司
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