CN1333144C

CN1333144C - Directioning falling and detaching method for chimney-like building

Info

Publication number: CN1333144C
Application number: CNB2005101168335A
Authority: CN
Inventors: 曲昕; 曲来印; 张金泉; 段毅凡
Original assignee: 曲昕
Priority date: 2005-10-31
Filing date: 2005-10-31
Publication date: 2007-08-22
Anticipated expiration: 2025-10-31
Also published as: CN1752383A

Abstract

The present invention discloses a directional falling and detaching method for a chimney class building. According to the method of directional control blasting, the bottom of a chimney class building is schemed out a central line of a falling direction and a contour line of a falling gap, and both sides of the gap is manually dug with guiding windows; the characteristics of the present invention also comprise that supporting holes are symmetrically dug in a wall in the contour line of the gap, and a hydraulic prop is arranged in each supporting hole for increasing pressure, so that supporting force fully satisfies a loading weight above the building falling gap; the residual wall in the contour line of the falling gap is dug and cleared, and upper weight is totally supported by the hydraulic props which are controlled remotely, and simultaneously, pressure is rapidly relieved, and the supporting force loses, so that a building loses stability to fall according to a falling direction. The directional blasting is easy to control, can not generate non-falling phenomenon and has the advantages of no blasting reaction force, no opposite directional fall, no rock fly and safe scene detachment.

Description

Directioning falling and detaching method for chimney-like building

Technical field

The invention belongs to the demolishing buildings method, relate in particular to the method for dismounting of chimney-like building.

Background technology

When removing discarded chimney class high-lager building (as chimney, water tower etc.), generally adopt directional blasting method.Promptly at the bottom design toppling direction center line and the breach outline line of building collapsing direction, arrange some boreholes on the body of wall in outline line, load onto explosive, far distance controlled is detonated, and explosion goes out breach, makes building one side lose support, collapses by predetermined direction.Sometimes accurate for collapse direction, before explosion, at first manually dig the guiding window in the breach both sides; Sometimes in order to reduce vibrations, in the breach outline line, dig some cavities in advance and reduce explosive charge.This method is more simple and safe than artificial dismounting in layer.But, because explosion is difficult to control sometimes, the phenomenon that onepull can not be toppled over takes place, need secondary blasting; Sometimes explosive force produces the moment counter-force, building is collapsed round about cause danger.The more important thing is the generation slungshot, very dangerous.

Summary of the invention

The objective of the invention is to overcome the deficiency of directional blasting, a kind of method of non-explosion directioning falling and detaching is provided.

Technical scheme of the present invention is, 1, according to the method for directed controlled blasting, go out the collapse direction center line and the breach outline line that collapses in the chimney-like building bottom design, and manually dig the guiding window in the breach both sides; 2, symmetry is dug and is supported the hole on the body of wall in the breach outline line, places hydraulic prop in the support hole and boosts, and makes support force be enough to satisfy the above load weight of building collapsing breach; 3, dig cutter and remove the interior residue body of wall of breach outline line that collapses, all support top weight by hydraulic prop; 4, far distance controlled hydraulic prop release rapidly simultaneously loses support force, and the chimney-like building loss of stability is pushed down landslide to toppling over.

Good effect of the present invention is, 1, because hydraulic prop than the easy control of directional blasting, the non-phenomenon of toppling over can not occur, can not topple in the other direction; 2, no blasting flyrock occurs, and the dismounting scene is safer.

Description of drawings

Expansion schematic diagram when Fig. 1 is embodiment of the invention chimney demolition, Fig. 2 are the profiles of Fig. 1, and Fig. 3 is a lateral view.

Among the figure: the 1-one way valve, the 2-hand oil pump, the 3-control valve, 4-topples over center line, and 5-remains body of wall, and 6-supports the hole, 7-breach outline line, the 8-window that leads, 9-fluid pressure line, 10-hydraulic prop.

The specific embodiment

Embodiment shown in Fig. 1, Fig. 2, Fig. 3 is through R=6 rice, wall thickness δ=0.3 meter, high H=80 rice, top end diameter R outside the bottom ₁=5 meters brick mix structure chimney, body of wall unit weight p=2.5 ton/rice ³, compressive strength 3.0Mpa, design blasting gap central angle θ=180 °, the high h=1.2 rice of breach.The above weight of blasting gap is as calculated: 535 tons of G ≈.

Therefore the hydraulic prop that designs with five 150 tons supports.

One, at first determining toppling direction, draw on the chimney body of wall and topple over center line 4, is the center to topple over center line 4, the breach outline line 7 that on the chimney body of wall, draws, and outline line 7 central angles are 180 °, 1.2 meters of height; Draw in the breach outline line 7 both sides outline line of guiding window 8, guiding window 8 be the end * isosceles triangle of height=0.8 * 0.8 meter.Toppling on the center line 4 and bilateral symmetry five outline lines that support hole 6 that draw, supporting the hole width and be designed to 0.5 meter, highly be equivalent to cut height, is 1.2 meters.

Two, through checking computations, the pressure that residue body of wall 5 bears after digging equals 557Mpa, greater than the compressive strength 300Mpa of body of wall, illustrates that residue body of wall 5 is enough to support the above weight of breach, meets safety requirements.

Three, dig out guiding window 8 according to guiding curtain runner profile, dig out support hole 5 according to supporting the hole outline line, support at each and settle hydraulic prop 10 in hole, be the equilibrium and the release simultaneously of the power that realizes five hydraulic props, adopt the single-acting synchronous fuel tank, carry out hydraulic pressure with fluid pressure line 9 and connect.Promptly the intermediate cavity of five hydraulic props 10 and oil back chamber are cascaded mutually, and the oil-in with each hydraulic prop 10 is connected on the control valve again, are connected with one way valve 1, hand oil pump 2 and control valve 3 on the control valve.Balancedly pressurize for hydraulic prop 10 by hand oil pump 2, the setting load of each pillar 10 must not be greater than the 535/5=107 ton, to prevent chimney to pushing up in the other direction.

Four, dig cutter residue body of wall 5 and disposing, the above load weight of breach is supported by hydraulic prop 5.

Five, by remote operation control valve 3, make 10 releases simultaneously of all hydraulic pillar, chimney loses support, topples over along toppling direction.

Claims

1, a kind of directioning falling and detaching method for chimney-like building, it may further comprise the steps:

(1) according to the method for directed controlled blasting, goes out the collapse direction center line and the breach outline line that collapses, manually dig the guiding window in the breach both sides in the chimney-like building bottom design;

(2) symmetry dig to support the hole on the body of wall in the breach outline line, supports to place hydraulic prop in the hole and boost, and makes support force be enough to satisfy collapse load weight more than the breach of chimney-like building;

(3) dig cutter and remove the interior residue body of wall of breach outline line that collapses, all support top weight by hydraulic prop;

(4) far distance controlled hydraulic prop release rapidly simultaneously loses support force, and the chimney-like building loss of stability is pushed down landslide to toppling over.