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Red mudstone tamping and backfilling method

A red and mudstone technology, applied in the field of red mudstone compaction and backfill, can solve the problem that red mudstone cannot be used as a backfill material in large quantities, and achieve the effect of shortening the construction period, saving construction costs, and reducing the shortening of the construction period.

Inactive Publication Date: 2020-01-03
中冶成都勘察研究总院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing red mudstone cannot be used as a large amount of backfill material, the present invention provides a red mudstone tamping backfill method, which can greatly increase the amount of red mudstone used, thereby reducing the backfill cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Crushing the red mudstone, the particle size of the crushed red mudstone is 40cm;

[0030] (2) Backfill the broken red mudstone to form a red mudstone layer, and the backfill height of each layer of red mudstone is 3m;

[0031] (3) Spot tamp the backfilled red mudstone layer first with a large rammer whose tamping energy is 3000KJ;

[0032] (4) Then use a small rammer to fully ram the red mudstone layer, and the ramming energy of the small rammer is 1000KJ;

[0033] (5) After tamping a red mudstone layer, backfill a layer of red mudstone layer, and then proceed to steps (3) and (4).

Embodiment 2

[0035] (1) Crushing the red mudstone, the particle size of the crushed red mudstone is 50cm;

[0036] (2) Backfill the broken red mudstone to form a red mudstone layer, and the backfill height of each layer of red mudstone is 4.5m;

[0037] (3) Spot tamp the backfilled red mudstone layer first with a large rammer whose tamping energy is 3000KJ;

[0038] (4) Then use a small rammer to fully ram the red mudstone layer, and the ramming energy of the small rammer is 1000KJ;

[0039] (5) After tamping a red mudstone layer, backfill a layer of red mudstone layer, and then proceed to steps (3) and (4).

Embodiment 3

[0041] (1) Crushing the red mudstone, the particle size of the crushed red mudstone is 32cm;

[0042] (2) Backfill the broken red mudstone to form a red mudstone layer, and the backfill height of each layer of red mudstone is 3m;

[0043] (3) Spot tamp the backfilled red mudstone layer first with a large rammer whose tamping energy is 3000KJ;

[0044] (4) Then use a small rammer to fully ram the red mudstone layer, and the ramming energy of the small rammer is 1000KJ;

[0045] (5) After tamping a red mudstone layer, backfill a layer of red mudstone layer, and then proceed to steps (3) and (4).

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Abstract

The invention belongs to the technical field of backfilling, and discloses a red mudstone tamping and backfilling method for solving the problem that an existing red mudstone can not be largely used as a backfilling material. The method directly utilizes the red mudstone for tamping and backfilling, excavated red mudstones are fully utilized, and meanwhile, a compacting factor (0.94) required by construction can be met. Compared with a way in the prior art that a small quantity of red mudstones is used and other materials are used for replacement, the red mudstone tamping and backfilling method disclosed by the invention can greatly reduce and shorten days for construction and save construction cost.

Description

technical field [0001] The invention belongs to the technical field of backfilling, and in particular relates to a red mudstone tamping backfilling method. Background technique [0002] Red mudstone (the red mudstone just blasted has higher strength) has the characteristics of strong weathering collapse, water softening, and strength reduction. disease. [0003] Because of this, in the prior art for the tamping and backfilling method of red mudstone, the thickness of each layer of red mudstone is no more than 50cm. If all red mudstone is used for backfilling, the overall height of red mudstone is generally between 50-200cm. Other areas use other materials for backfilling, and for the red mudstone area with a large total excavation volume, due to the small amount of red mudstone used, there is a huge demand for other fillers that replace red mudstone as backfill materials. Said that the construction cost is higher. Contents of the invention [0004] In order to solve the...

Claims

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Application Information

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IPC IPC(8): E01C3/00E01C3/04E02D17/18E02D3/02
CPCE01C3/00E01C3/04E02D3/02E02D17/18
Inventor 彭涛邓安杨林徐建骁
Owner 中冶成都勘察研究总院有限公司
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