CN100439651C

CN100439651C - Land bridge method for recovery of pressed coal under highway

Info

Publication number: CN100439651C
Application number: CNB2006101130046A
Authority: CN
Inventors: 杨德玉; 耿加怀; 何满潮; 张怀新; 黄福昌; 倪兴华
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-09-06
Filing date: 2006-09-06
Publication date: 2008-12-03
Anticipated expiration: 2026-09-06
Also published as: CN101139928A

Abstract

A dry bridge exploitation method for express highway lower press coals belongs to a method to maintain an express highway being continuously utilized, maintained and recovered during lower press coals exploitation under the express highway. For an express highway, traditional exploitation methods for express highway lower press coals cannot guarantee vehicles normally running on the highway during the underground exploitation. Meanwhile, the traditional methods might either cause traffic shutdown on an express highway, or result in too much recovery cost or too much waste of coals. The invention can fulfill that, before coal layer exploitation influences an express highway, erecting a large-span dry bridge to substitute the express highway segment in serving vehicles during the exploitation; after the exploitation influences are over, perform recovery for the express highway and dismantle the dry bridge to recovery traffic. Therefore, the scheme can fulfill the following targets of the invention: Provide a dry bridge exploitation method for express highway lower press coals, in order to guarantees normal traffic and traffic safety during exploitation of the underground coals; meanwhile, the invention can considerably lower cost of maintenance, curring and recovery for express highways, and moreover, expand press coal exploitation volume and sufficiently utilize resources..

Description

A kind of land bridge method for recovery of pressed coal under highway

Technical field

Speedway use, reparation, maintenance, maintenance method when pressing down coal mining relate in particular to a kind of land bridge method for recovery of pressed coal under highway with the present invention relates to.

Background technology

Speedway has strict technical requirement, as in Plain and Wei Qiu area, and position, maximum slope 3%; The perpendicular bilge radius limit minimum value of convex is 11000 meters, 17000 meters of general minimum value; 4000 meters of recessed capable vertical curve radius minimum value, 6000 meters of general minimum value; 100 meters of minimum length of vertical curve; Or the like.Speedway when pressing down coal mining, can form the surface subsidence basin, its movement and deformation can make speedway produce horizontal stretch distortion, inclination and distortion and curvature distortion.The horizontal stretch distortion will make the road surface fracture occur, and inclination and distortion will make highway vertical and horizontal slope change, and the curvature distortion will change concave-convex Design of Vertical Curve radius; All these will influence traffic safety, transport power, the traffic volume of speedway, when serious even can cause pernicious traffic accident.For avoiding above-mentioned adverse consequences, traditional speedway presses down the coal mining method and is:

1) speedway changes its course, and avoids mining area;

2) " under the building, under the water body, railway and main roadway coal column stay and establish and press the coal mining rules " pertinent regulations of formulating according to State Administration of Coal Industry are stayed and are established the protection coal column;

3) " under the building, under the water body, railway and main roadway coal column stay and establish and press the coal mining rules " formulated according to State Administration of Coal Industry carries out pilot production under the situation of conditions permit.The pilot production program is: at first carry out feasibility study, carry out schematic design again, carry out preliminary design at last.In order to control subsidence amount and deflection, generally subtract heavy technology at the exploitation of down-hole enforcement band, filling mining, strip filling exploitation, limited thickness extrac tion, overlying strata separation layer grouting; On ground, speedway will be reserved deformation joint, prior reinforcement bridge culvert, and in time repair, constantly repair with exploitation.Yet, for, the speedway that involves great expense fast, still can not guarantee the normal current of in underground mining process road vehicles for concrete pouring road surface, foundation deformation sensitivity, road speed.

Obviously, above-mentioned conventional method or speedway can't be open to traffic perhaps makes its rehabilitation cost too high, perhaps wastes a large amount of coal resources.

Summary of the invention

In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide a kind of land bridge method for recovery of pressed coal under highway, normal driving and traffic safety when it can guarantee recovery of subterranean pressure coal, maintenance, maintenance, the rehabilitation cost of speedway have greatly been reduced simultaneously, and enlarged pressure coal mining amount, fully used the energy.

The objective of the invention is to be achieved through the following technical solutions:

A kind of land bridge method for recovery of pressed coal under highway, exploitation also do not have influence on speedway stable before, set up viaduct 1 and replace influenced or be about to affected speedway location 2 being open to traffic, and exploit this location during this period and press down coal 3;

Described method is included in goaf 4 old rimrock beams and does not also form before the sedimentation destruction, fills 5 pairs of goafs of prop 4 and carries out supporting; And:

1) prop 5 intensity will satisfy the stable requirement of old rimrock beam;

2) prop 5 moves towards and transversely is not more than 0.8 times of old top periodic weighting step pitch layout in exploitation;

Finish supporting, treat that exploitation repairs this section speedway, removes viaduct 1 and be open to traffic the stable back of speedway influence;

Described viaduct 1 can be regulated viaduct 6 for the combined type that detours, a side that detours and be erected at the quasi-steady of speedway or sunk;

The described combined type that detours can be regulated viaduct 6 under perpendicular to speedway 2 mining types, detours to be erected at and wouldn't exploit on the part 7, presses coals in speedway 2 exploitation on one side of this viaduct 6;

The described combined type that detours can be regulated viaduct 6 and be parallel under speedway 2 mining types, detours to be erected at and adopts on the sky part 8, presses coal by this viaduct 6 to speedway 2 exploitation on one side;

The described combined type that detours can be regulated viaduct 6 and be diagonal under speedway 2 mining types, detours to be erected at and adopts sky part 8 and wait to exploit on the part 9, presses coals by this viaduct 6 to speedway 2 exploitation on one side.

By above technical scheme a kind of land bridge method for recovery of pressed coal under highway of the present invention as can be known, before seam mining influences speedway, build the large span viaduct, replace highway driving between the productive life, treat that mining effect uses the speedway reparation later again, remove viaduct, thereby realize purpose of the present invention.Because the use of viaduct made and needn't often repair highway between the productive life, cause the cost waste; The disposable reparation speedway in stable back also provides cost savings greatly on ground.And on safety and convenience, viaduct not only is beneficial to the standard of reaching but also be easier to make; Simultaneously, also needn't stay and establish the protection coal column, fully recovery of subterranean resources.

Description of drawings

Fig. 1 is that viaduct replaces speedway driving vehicle, speedway sinking situation schematic diagram generally speaking;

Fig. 2 is that viaduct replaces the speedway driving vehicle generally speaking, speedway sinks stable after, backfill situation schematic diagram;

Fig. 3 is that viaduct replaces the speedway driving vehicle generally speaking, and after speedway sank to stablizing, highway was repaired in backfill, removes the schematic diagram of viaduct situation.

Fig. 4 is under the vertically exploitation situation, the set-up mode schematic diagram of the combined adjustable that detours viaduct; The white location is the goaf, and the black location is just to adopt the coal storage district, and light location is to wait to adopt the coal storage district.

Fig. 5 is under the parallel exploitation situation, the set-up mode schematic diagram of the combined adjustable that detours viaduct; The white location is the goaf, and the black location is just to adopt the coal storage district, and light location is to wait to adopt the coal storage district.。

Fig. 6 is under the oblique exploitation situation, the set-up mode schematic diagram of the combined adjustable that detours viaduct; The white location is the goaf, and the black location is just to adopt the coal storage district, and the grey location is to wait to adopt the coal storage district.

Fig. 7 is the non-fracture damage control technology of the old rimrock beam in a deep schematic diagram; Prop adopts down-hole rotary jet grouting technology to form, and belongs to existing mature technology; Dependency structure has: operation chamber, construction tunnel, servo-actuated interface, operation duct, the layer that falls that collapses, goaf etc.

The specific embodiment

A kind of land bridge method for recovery of pressed coal under highway embodiment of the present invention is three kinds of basic modes that speedway presses down coal mining shown in Fig. 4,5,6, also is the present invention program's embodiment.Under these three kinds of basic modes, adopt the combined adjustable viaduct that detours to detour and set up, its advantage is before speedway is not affected, setting up viaduct does not influence normally being open to traffic of highway, is not open to traffic and do not influence normally when repairing speedway yet.At this moment, the Highway house of exploitation earlier is at pressure coal on one side, and the combined adjustable that will detour viaduct is erected at unminds or adopt an empty end.Exploitation work plane shown in the figure shows under highway influence section and can hold several exploitation work planes.Under actual conditions, the viaduct that detours can have the span about 3 kilometers, can hold under it and exploit about 10 of work planes about 300 meters.When mining effect when highway is normally driven a vehicle, vehicle can be current through the combined adjustable viaduct that detours.Highway wouldn't use also and needn't repair immediately or constantly this moment; Row reparation is open to traffic again after ground is stable.The combined adjustable that detours viaduct is removed the back with locating toward it.The utilization of the ground damage control technology of filling in conjunction with the control of the non-rupture failure of old rimrock beam and down-hole can be very fast in goaf realization ground damage control, thereby repair speedway as early as possible; The combined adjustable viaduct that will detour this moment is erected at the goaf, and cost can be lower.

Non-rupture failure control technology of old rimrock beam and down-hole filling technique are mature technique at present, in conjunction with this technology, the enforcement of this programme are further increased the benefit in this programme.Ground do not have destroyed before, fill prop, the goaf is sunk to being controlled, can alleviate the repair amount of this section speedway to a great extent, thereby reduce cost.

Adopt aforesaid way to carry out the exploitation that speedway presses down coal, realized purpose of safety more low-cost, more convenient, more undoubtedly.

Above-described technical scheme only is the preferable specific embodiment and the representational specific embodiment of the present invention; But protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses, and the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.

Claims

1, a land bridge method for recovery of pressed coal under highway, it is characterized in that: exploitation also do not have influence on speedway stable before, set up viaduct (1) and replace influenced or be about to affected speedway (2) location being open to traffic, and exploit this location during this period and press down coal (3); Simultaneously, before goaf (4) old rimrock beam does not also form sedimentation destruction, fill prop (5) goaf (4) are carried out supporting; And:

1) prop (5) intensity will satisfy the stable requirement of old rimrock beam;

2) prop (5) moves towards and transversely is not more than 0.8 times of old top periodic weighting step pitch layout in exploitation;

Finish supporting, treat that exploitation repairs this section speedway, removes viaduct (1) and be open to traffic the stable back of speedway influence;

2, a kind of land bridge method for recovery of pressed coal under highway according to claim 1 is characterized in that: described viaduct (1) can be regulated viaduct (6) for the combined type that detours, a side that detours and be erected at the quasi-steady of speedway or sunk;

3, a kind of land bridge method for recovery of pressed coal under highway according to claim 2, it is characterized in that: the described combined type that detours can be regulated viaduct (6) under perpendicular to speedway (2) mining type, detour to be erected at and to exploit on the part (7), press coal in speedway (2) exploitation on one side of this viaduct (6);

4, a kind of land bridge method for recovery of pressed coal under highway according to claim 2, it is characterized in that: the described combined type that detours can be regulated viaduct (6) and be parallel under speedway (2) mining type, detour to be erected at and adopt on the empty part (8), press coal to speedway (2) exploitation on one side by this viaduct (6);

5, a kind of land bridge method for recovery of pressed coal under highway according to claim 2, it is characterized in that: the described combined type that detours can be regulated viaduct (6) and be diagonal under speedway (2) mining type, detour to be erected at and adopt empty part (8) and treat on the exploitation part (9), by this viaduct (6) to speedway (2) exploitation pressure on one side coal.