CN217213169U

CN217213169U - Vertical ventilation shaft measurement system

Info

Publication number: CN217213169U
Application number: CN202220541740.6U
Authority: CN
Inventors: 方兵; 徐其学; 刘晓锋; 谢先武; 高兵; 吕超武; 王珏
Original assignee: China Railway 11th Bureau Group Co Ltd; Fifth Engineering Co Ltd of China Railway 11th Bureau Group Co Ltd
Current assignee: China Railway 11th Bureau Group Co Ltd; Fifth Engineering Co Ltd of China Railway 11th Bureau Group Co Ltd
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2022-08-16
Anticipated expiration: 2032-03-11

Abstract

The utility model provides a vertical ventilation shaft measurement system, including freely erect the interior total powerstation in the construction shaft, a plurality of set up the pre-buried member on the well edge of construction shaft, a plurality of freely erect the outer total powerstation outside the construction shaft and at least three GPS control point, pre-buried member is used for installing the prism, interior total powerstation is used for measuring the prism of installing on the pre-buried member on the well edge; the outdoor total station is arranged at a place where at least any two GPS control points and prisms on all embedded rod pieces on the well edge can be measured; all GPS control points are arranged around the construction well and are arranged in a place which is not disturbed by the construction of the construction well, and the range of the space surrounded by all the GPS control points projected on the ground at least covers the well mouth of the construction well. The equipment is simple, reduces the human cost, reduces the potential safety hazard, convenient and fast.

Description

Vertical ventilation shaft measurement system

Technical Field

The utility model relates to a ventilation shaft construction technical field, concretely relates to vertical ventilation shaft measurement system.

Background

In the current tunnel construction of our country, when carrying out vertical ventilation shaft construction, because the construction site restriction, the equipment is more, and the large-scale equipment of portal crane shelters from especially, at every contact measurement, very inconvenient when hanging the steel wire has potential safety hazard, construction measurement inefficiency scheduling problem.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the technical problem who exists among the prior art at least, creatively provided a vertical ventilation shaft measurement system very much, reduced the potential safety hazard, improved measurement of efficiency.

In order to realize the above purpose of the utility model, the utility model provides a vertical ventilation shaft measuring system, including an in-well total station freely erected in the construction shaft, a plurality of pre-buried rod pieces arranged on the well edge of the construction shaft, a plurality of out-of-well total station freely erected outside the construction shaft and at least three GPS control points, wherein the pre-buried rod pieces are used for installing prisms, and the in-well total station is used for measuring the prisms installed on the pre-buried rod pieces on the well edge; the outdoor total station is arranged at a place where at least any two GPS control points and prisms on all embedded rod pieces on the well edge can be measured;

all GPS control points are arranged around the construction well and are arranged in a place which is not disturbed by the construction of the construction well, and the range of the space surrounded by all the GPS control points projected on the ground at least covers the well mouth of the construction well.

In the scheme, the method comprises the following steps: four corners of the vertical ventilating shaft wellhead are provided with embedded rods, so that the shape, position and elevation of the vertical ventilating shaft wellhead can be conveniently determined.

In the scheme, the method comprises the following steps: the prism is detachably mounted on the embedded rod piece and is taken down after each measurement is finished. Because the prism is made for glass, fragile, take off after measuring at every turn, only install when measuring, can avoid shaking the prism and break or shake off because vibration in the work progress, practice thrift the cost.

In the scheme, the method comprises the following steps: the number of the embedded rod pieces is 4-6, and the other two embedded rod pieces except the four corner positions of the well edge are respectively and randomly arranged on the middle points of the two side edges of the well edge. And increasing the measuring points of the well edge to be used as reference when judging whether the well edge of the ventilation well is changed due to soil disturbance, and improving the accuracy of judging the lofting station setting.

In the scheme, the method comprises the following steps: the total station in the well is arranged at any position of the prisms on all the embedded rods in the well, so that the prisms at the well mouth can be conveniently measured, and correct lofting coordinates are introduced.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that: during each measurement, the prism at the wellhead is measured through the bottom total station, the measured coordinate position of the prism is compared with the previously measured coordinate position of the prism, and if the error is smaller than the allowable range, the standard requirement is determined to be met. Compare traditional mode of setting up the portal frame and placing the plumb line, construction equipment is few, and the equipment is simple, need not to adopt large-scale equipment such as portal frame, reduces the human cost, reduces the potential safety hazard, convenient and fast. The total station can also be in the construction of ventilation shaft construction completion back in the well that sets up, and lofting when constructing the ventilation cross cut hole commands the cross cut hole construction.

Drawings

The above advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic diagram of the system of the present invention.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1, a vertical ventilation shaft measuring system comprises an in-well total station 4 freely erected in a construction shaft, a plurality of embedded rods 3 arranged on the well edge of the construction shaft, three out-of-well total stations 2 freely erected outside the construction shaft and three GPS control points 1, wherein the embedded rods 3 are used for installing prisms 5. The prism 5 is detachably mounted on the embedded rod piece 3 and is taken down after measurement is finished each time, so that the prism 5 is prevented from being shaken or broken during construction, and the cost is saved.

The total station 4 in the well is used for measuring a prism 5 arranged on the embedded rod piece 3 on the well edge; the total station 4 in the well is freely arranged at any position where the prisms 5 on all the embedded rod pieces 3 can be seen in the well. The outdoor total station 2 is arranged at a place where at least any two GPS control points 1 and prisms 5 on all embedded rod pieces 3 on the well edge can be measured.

Because the construction of vertical ventilation shaft need suspend the construction after being under construction a distance to measuring prism 5 and three GPS control point 1, and the place that erects when measuring in the total powerstation 4 in the well and the total powerstation 2 outside the well in the construction clearance each time all can be changed, and need remove when the construction.

All the GPS control points 1 are arranged around the construction well and are arranged in a place which is not disturbed by the construction of the construction well, and the range of the space surrounded by all the GPS control points 1 projected on the ground at least covers the well mouth of the construction well.

The 4 embedded rod pieces 3 are arranged at four corners of the well edge to determine the coordinates of the transmission positions above and below the well, and can be used as reference when judging whether the well edge of the construction well is changed due to soil disturbance. The middle point of any two side edges of the well edge can be provided with a prism 53, so that the measuring points of the well edge are increased, and the judgment lofting precision is improved.

When the system is used, a GPS plane network control network is firstly arranged outside a well, coordinates of three GPS control points 1 are determined, a total station free station setting method is adopted, three GPS control points 1 and prisms 5 on three well edges are measured in a combined mode through three outdoor total stations 2, coordinates of the control points, namely coordinates of four corners of the well edges, are obtained, and then construction is started. During construction, the underground construction is carried out for a certain distance, then the total station 4 in the well is placed in the construction well under construction, and a prism 5 on the edge of the measurement well is intersected from the rear in the well. And checking whether the station setting precision meets the standard requirements, and if so, continuing construction lofting. If the error exceeds the allowable range, the coordinates of the GPS control point 1 are measured again through the external total station 2, then the coordinates of the prism 5 on the well edge are measured in a combined mode, and whether the coordinates of the prism 53 on the well edge change or not is judged according to the comparison between the coordinates of the GPS control point 1 which is not disturbed by soil and the coordinates of the prism 5 on the well edge in the construction process, so that whether the caliber, the shape and the position of a well mouth change or not is determined. And if the change does not occur, informing the underground constructor of continuing construction, if the change occurs, informing the underground constructor of changing coordinates, and taking the changed coordinates as new initial coordinates by the underground constructor for subsequent measurement and comparison, and taking away the total station 4 in the well for continuing construction. And after the construction is carried out for a certain distance, repeating the measuring steps to finish the construction of the vertical ventilation shaft.

After the construction of the vertical ventilation shaft is completed, if the construction of the ventilation cross hole is needed, the total station 4 in the shaft can be fixed at the shaft bottom, the transverse lofting is carried out, the prisms 5 are fixed on the left side and the right side of the transverse excavation before each measurement, the two prisms 5 are measured to command the construction of the cross hole, and after the measurement is finished, only the prism 5 is removed.

Claims

1. The utility model provides a vertical ventilation shaft measurement system which characterized in that: the system comprises an in-well total station (4) freely erected in a construction well, a plurality of embedded rod pieces (3) arranged on a well edge of the construction well, a plurality of out-well total stations (2) freely erected outside the construction well and at least three GPS control points (1), wherein the embedded rod pieces (3) are used for installing prisms (5), and the in-well total station (4) is used for measuring the prisms (5) installed on the embedded rod pieces (3) on the well edge; the outdoor total station (2) is arranged at a place where at least any two GPS control points (1) and prisms (5) on all embedded rod pieces (3) on the well edge can be measured;

all the GPS control points (1) are arranged around the construction well and are arranged at a place which is not disturbed by the construction of the construction well, and the range of the space surrounded by all the GPS control points (1) projected on the ground at least covers the wellhead of the construction well.

2. A vertical ventilation shaft measuring system according to claim 1, characterized in that: four corners of the well edge of the construction well are provided with embedded rod pieces (3).

3. A vertical ventilation shaft measuring system according to claim 2, wherein: the prism (5) is detachably mounted on the embedded rod piece (3) and is taken down after each measurement is finished.

4. A vertical ventilation shaft measuring system according to claim 2, wherein: the number of the embedded rods (3) is 4-6, and the other two embedded rods (3) except the four corner positions of the well edge are respectively and randomly arranged on the middle points of the two side edges of the well edge.

5. A vertical ventilation shaft measuring system according to claim 1, wherein: the total station (4) in the well is arranged at any position where the prisms (5) on all the embedded rod pieces (3) can be seen in the well.