CN112324495A

CN112324495A - Method and device for predicting meeting points and construction period of tunnel excavation under inclined shaft insertion condition

Info

Publication number: CN112324495A
Application number: CN202010832556.2A
Authority: CN
Inventors: 王同军; 王万齐; 刘延宏; 王江; 解亚龙; 鲍榴; 李桢怡; 卢文龙; 梁策; 刘红峰; 索宁; 李慧; 石新桥; 王佳琦; 王键; 贺晓玲; 晁棉镖; 杨威; 陈雪娇; 乔方博
Original assignee: China Academy of Railway Sciences Corp Ltd CARS; Institute of Computing Technologies of CARS; Beijing Jingwei Information Technology Co Ltd
Current assignee: China Academy of Railway Sciences Corp Ltd CARS; Institute of Computing Technologies of CARS; Beijing Jingwei Information Technology Co Ltd
Priority date: 2020-08-18
Filing date: 2020-08-18
Publication date: 2021-02-05
Anticipated expiration: 2040-08-18
Also published as: CN112324495B

Abstract

The invention provides a method and a device for predicting meeting points and construction period of tunnel excavation under an inclined shaft inserting condition, wherein the method for predicting the meeting points comprises the following steps: receiving inclined shaft information, and searching an inclined shaft position close to the initial mileage position; calculating first excavation time of mileage between the initial mileage position and the position of the inclined shaft; dividing the first excavation time by two to obtain meeting time when two ends of the inclined shaft are excavated from the initial mileage position and the inclined shaft position simultaneously; accumulating the surrounding rock mileage one by one from one end of the surrounding rock section, and calculating the required excavation time corresponding to the accumulated surrounding rock mileage each time until the required excavation time of the accumulated surrounding rock mileage is greater than the encounter time and the required excavation time of the previous accumulation is less than or equal to the encounter time; calculating the accumulated excavation time required by the last section of surrounding rock; calculating the mileage of the last section of surrounding rock; and calculating the surrounding rock mileage after the previous accumulation, and summing all the sections to obtain the position of the meeting point. The tunnel excavation data can be conveniently and timely modified through the scheme.

Description

Method and device for predicting meeting points and construction period of tunnel excavation under inclined shaft insertion condition

Technical Field

The invention relates to the technical field of tunnel engineering, in particular to a method and a device for predicting meeting points and construction period of tunnel excavation under the condition of inclined shaft insertion.

Background

The railway engineering construction period is long, the mileage is long, the engineering quantity is large, and the mountain can be crossed with a high probability along the railway. Therefore, tunnel engineering is an important part of railway engineering, and tunnels with a plurality of difficulties are often used as key control points of the whole engineering project for engineering management. Therefore, the construction period of the tunnel directly affects the overall construction period of the project. Due to the fact that the construction difficulty of tunnel engineering is high, multiple factors influencing the tunnel construction period exist in the construction process of the tunnel engineering, such as surrounding rock grade change and equipment state change, and the tunnel construction period is delayed.

One or more inclined shafts can be excavated, and meanwhile, working teams are added at the inclined shafts to accelerate the tunnel excavation progress. In this case, the crew at the slant will meet the crew at a point in the tunnel. Every time an inclined shaft is added, 1-2 meeting points are added according to the condition of adding the working surface.

At present, the railway tunnel engineering mostly adopts a manual mode to calculate the problem. However, when a new slant well is inserted, many calculations and adjustments are generated, which is inconvenient for timely modifying and adjusting data.

Disclosure of Invention

In view of the above, the invention provides a method and a device for predicting meeting points and construction period of tunnel excavation under the condition of inclined shaft insertion, so as to modify and adjust tunnel excavation data in time.

In order to achieve the purpose, the invention is realized by adopting the following scheme:

according to an aspect of the embodiment of the invention, a method for predicting meeting points of tunnel excavation under an inclined shaft inserting condition is provided, and the method comprises the following steps:

acquiring a pre-stored initial mileage position, surrounding rock grades of all surrounding rock sections of the tunnel, an excavation speed of an excavation construction method correspondingly set for all the surrounding rock grades, and surrounding rock mileage of all the surrounding rock sections of the tunnel;

under the condition that the mileage position of at least one inclined shaft inserted into the section to be excavated of the tunnel is received, searching the position of a first inclined shaft adjacent to the initial mileage position in the at least one inclined shaft according to the initial mileage position of the tunnel and the mileage position of the at least one inclined shaft inserted into the section to be excavated of the tunnel;

calculating first excavation time of mileage between the initial mileage position and the first inclined shaft position based on the surrounding rock grade of each surrounding rock section of the tunnel, the excavation speed of the corresponding set excavation construction method of each surrounding rock grade and the surrounding rock mileage of each surrounding rock section of the tunnel;

dividing the first excavation time by two to obtain first encounter time corresponding to a first encounter point between the initial mileage position and the position of the first inclined shaft under the condition that two-end excavation is simultaneously carried out from the initial mileage position and the position of the first inclined shaft;

based on the surrounding rock grades of all surrounding rock sections of the tunnel, the excavation speed of an excavation construction method correspondingly set for all the surrounding rock grades, and the surrounding rock mileage of all the surrounding rock sections of the tunnel, accumulating the surrounding rock mileage one by one between the initial mileage position and the first inclined shaft position from the initial mileage position or the first inclined shaft position, and calculating the required excavation time corresponding to each accumulated surrounding rock mileage until the required excavation time corresponding to the accumulated surrounding rock mileage is greater than the first encounter time, and the required excavation time corresponding to the previously accumulated surrounding rock mileage of the accumulated surrounding rock section is less than or equal to the first encounter time;

when the required excavation time corresponding to the accumulated surrounding rock mileage is larger than the first encounter time and the required excavation time corresponding to the previously accumulated surrounding rock mileage of the currently accumulated surrounding rock section is smaller than or equal to the first encounter time, subtracting the required excavation time corresponding to the previously accumulated surrounding rock mileage of the last accumulated surrounding rock section from the first encounter time to obtain the required excavation time of the last surrounding rock section in the last accumulated surrounding rock mileage between the initial mileage position and the first inclined shaft position;

correspondingly setting the excavation speed of an excavation construction method based on the surrounding rock grades of all the surrounding rock sections of the tunnel and all the surrounding rock grades, and multiplying the excavation time required by the last section of surrounding rock in the last accumulated surrounding rock mileage between the initial mileage position and the first inclined shaft position by the corresponding excavation speed to obtain the mileage of the last section of surrounding rock in the last accumulated surrounding rock mileage between the initial mileage position and the first inclined shaft position;

and calculating to obtain the surrounding rock mileage after the previous accumulation of the last accumulated surrounding rock section between the initial mileage position and the position of the first inclined shaft based on the surrounding rock mileage of each surrounding rock section of the tunnel, and summing the initial mileage position, the previous accumulated surrounding rock mileage after the last accumulated surrounding rock section between the initial mileage position and the position of the first inclined shaft, and the last accumulated surrounding rock mileage among the last accumulated surrounding rock mileage between the initial mileage position and the position of the first inclined shaft to obtain the mileage position of the first meeting point.

In some embodiments, in a case that the number of at least one slant shaft inserted into the section to be excavated of the tunnel is plural, the method for predicting the meeting point of tunnel excavation under the condition of slant shaft insertion further includes:

based on the mileage position of at least one inclined shaft inserted into the section to be excavated of the tunnel, searching the position of a second inclined shaft which is close to the first inclined shaft and far away from the initial mileage position in the at least one inclined shaft;

calculating second excavation time of mileage between the position of the first inclined shaft and the position of the second inclined shaft based on the surrounding rock grade of each surrounding rock section of the tunnel, the excavation speed of the correspondingly set excavation construction method of each surrounding rock grade and the surrounding rock mileage of each surrounding rock section of the tunnel;

dividing the second excavation time by two to obtain second encounter time corresponding to a second encounter point between the position of the first inclined shaft and the position of the second inclined shaft under the condition that two-end excavation is simultaneously carried out from the position of the first inclined shaft and the position of the second inclined shaft;

based on the surrounding rock grades of all surrounding rock sections of the tunnel, the excavation speed of the excavation construction method correspondingly set by all the surrounding rock grades and the surrounding rock mileage of all the surrounding rock sections of the tunnel, accumulating the surrounding rock mileage one by one between the position of the first inclined shaft and the position of the second inclined shaft from the position of the first inclined shaft or the position of the second inclined shaft, and calculating the required excavation time corresponding to the accumulated surrounding rock mileage each time until the required excavation time corresponding to the accumulated surrounding rock mileage is greater than the second meeting time, and the required excavation time corresponding to the previously accumulated surrounding rock mileage of the accumulated surrounding rock section at this time is less than or equal to the second meeting time;

when the required excavation time corresponding to the accumulated surrounding rock mileage is longer than the second meeting time and the required excavation time corresponding to the previously accumulated surrounding rock mileage of the currently accumulated surrounding rock section is shorter than or equal to the second meeting time, subtracting the required excavation time corresponding to the previously accumulated surrounding rock mileage of the last accumulated surrounding rock section from the second meeting time to obtain the required excavation time of the last surrounding rock section in the last accumulated surrounding rock mileage between the position of the first inclined shaft and the position of the second inclined shaft;

correspondingly setting the excavation speed of an excavation construction method based on the surrounding rock grades of the surrounding rock sections of the tunnel and the surrounding rock grades, and multiplying the excavation time required by the last section of surrounding rock in the last accumulated surrounding rock mileage between the position of the first inclined shaft and the position of the second inclined shaft by the corresponding excavation speed to obtain the mileage of the last section of surrounding rock in the last accumulated surrounding rock mileage between the position of the first inclined shaft and the position of the second inclined shaft;

and calculating to obtain the surrounding rock mileage after the last accumulation of the surrounding rock section between the position of the first inclined shaft and the position of the second inclined shaft based on the surrounding rock mileage of each surrounding rock section of the tunnel, and summing the surrounding rock mileage after the last accumulation of the surrounding rock section between the position of the first inclined shaft and the position of the second inclined shaft and the surrounding rock mileage after the last accumulation of the surrounding rock mileage between the position of the first inclined shaft and the position of the second inclined shaft to obtain the mileage position of the second meeting point.

In some embodiments, the initial mileage location is a location to which mileage has been dug at the first end or the second end of the tunnel.

In some embodiments, the initial mileage position is a mileage position of a third slant well inserted earlier in the tunnel than the at least one slant well.

In some embodiments, the method for predicting meeting points of tunnel excavation under the inclined shaft insertion condition further includes:

and receiving the new surrounding rock grade of the set surrounding rock section, updating the surrounding rock grade of each surrounding rock section of the tunnel according to the new surrounding rock grade of the set surrounding rock section, and correspondingly setting the excavation speed of the excavation method according to each surrounding rock grade.

According to another aspect of the embodiment of the invention, a method for predicting a tunnel excavation period under an inclined shaft insertion condition is provided, which comprises the following steps:

acquiring mileage positions of all meeting points of the tunnel by using the method of any embodiment;

calculating meeting time corresponding to each meeting point according to the initial mileage position, the surrounding rock grade of each surrounding rock section of the tunnel, the corresponding set excavation speed of the excavation method of each surrounding rock grade, the surrounding rock mileage of each surrounding rock section of the tunnel, the mileage position of each inclined shaft inserted into the section to be excavated of the tunnel and the mileage positions of all the meeting points;

taking the maximum meeting time in the meeting times corresponding to all the meeting points as the residual excavation time required by the tunnel except the initial mileage position;

and acquiring excavation time required by excavation to reach the initial mileage position, and summing the excavation time required by excavation to reach the initial mileage position and the required residual excavation time to obtain the total construction period required by the tunnel.

In some embodiments, the method for predicting the tunnel excavation period under the inclined shaft insertion condition further includes:

summing the meeting time corresponding to each meeting point and the excavation time required for excavation to reach the initial mileage position to obtain the total construction period of excavation to reach the corresponding meeting point;

and displaying each meeting point and the corresponding total construction period in a two-dimensional coordinate system formed according to the mileage and excavation time of the tunnel.

According to another aspect of the embodiments of the present invention, a method for predicting a tunnel excavation period under a deviated well inserting condition is provided, including:

calculating to obtain the surrounding rock mileage after the previous accumulation of the last accumulated surrounding rock section between the initial mileage position and the position of the first inclined shaft based on the surrounding rock mileage of each surrounding rock section of the tunnel, and summing the initial mileage position, the previous accumulated surrounding rock mileage after the last accumulated surrounding rock section between the initial mileage position and the position of the first inclined shaft, and the last accumulated surrounding rock mileage among the last accumulated surrounding rock mileage between the initial mileage position and the position of the first inclined shaft to obtain the mileage position of the first meeting point;

acquiring excavation time required by excavation to reach the initial mileage position, and summing the excavation time required by excavation to reach the initial mileage position and the first meeting time to obtain a total construction period corresponding to the first meeting point;

and taking the longest construction period in the total construction period corresponding to all meeting points including the first meeting point as the total excavation construction period of the tunnel.

According to yet another aspect of embodiments of the present invention, a computer device is proposed, which comprises a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the steps of the method according to any of the above embodiments when executing the program.

According to a further aspect of embodiments of the present invention, a computer-readable storage medium is proposed, on which a computer program is stored, characterized in that the program, when executed by a processor, implements the steps of the method according to any of the above embodiments.

The method for predicting the meeting points of tunnel excavation under the inclined shaft insertion condition, the method for predicting the construction period of tunnel excavation under the inclined shaft insertion condition, the computer equipment and the computer readable storage medium can realize automatic deduction and updating of the meeting points and the construction period, and can facilitate timely modification and adjustment of tunnel excavation data.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts. In the drawings:

fig. 1 is a schematic flow chart of a method for predicting meeting points of tunnel excavation under an inclined shaft insertion condition according to an embodiment of the present invention;

fig. 2 is a schematic flow chart illustrating a method for predicting a tunnel excavation period under a deviated well inserting condition according to an embodiment of the present invention;

fig. 3 is a schematic flow chart illustrating a method for predicting a tunnel excavation period under a deviated well inserting condition according to an embodiment of the present invention;

FIG. 4 is a schematic representation of railway tunneling without scattered meeting points in accordance with an embodiment of the present invention;

fig. 5 is a flowchart illustrating a calculation process of the tunnel intersection point according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.

It should be noted in advance that the features described in the following embodiments or examples or mentioned therein can be combined with or replace the features in other embodiments or examples in the same or similar manner to form a possible implementation. In addition, the term "comprises/comprising" as used herein refers to the presence of a feature, element, step or component, but does not preclude the presence or addition of one or more other features, elements, steps or components.

Fig. 1 is a schematic flow chart of a method for predicting meeting points of tunnel excavation under a slant entry condition according to an embodiment of the present invention, and as shown in fig. 1, the method for predicting meeting points of tunnel excavation under a slant entry condition according to the embodiments may include the following steps S110 to S190.

Specific embodiments of steps S110 to S190 will be described in detail below.

Step S110: and acquiring a pre-stored initial mileage position, the surrounding rock grade of each surrounding rock section of the tunnel, the excavation speed of the corresponding set excavation method of each surrounding rock grade, and the surrounding rock mileage of each surrounding rock section of the tunnel.

In step S110, a section of surrounding rock that continues from front to back is poured into the constructed tunnel, and different tunnel sections have different requirements for the surrounding rock, so that surrounding rocks of different grades can be adopted, and the grade of the surrounding rock and the excavation method affect the excavation speed. For a tunnel project, a tunnel route, a total mileage of the tunnel, the number of segments of surrounding rocks, the grade of each segment of surrounding rocks, the mileage of each segment of surrounding rocks, an adopted excavation method and the like are planned in advance. Therefore, the surrounding rock grade of each surrounding rock section of the tunnel and the surrounding rock mileage of each surrounding rock section of the tunnel can be obtained according to the planning of tunnel engineering. In addition, the excavation speed of the excavation method correspondingly set for each surrounding rock grade can be obtained by pre-evaluating according to the surrounding rock grade and the excavation method according to experience. Therefore, the information can be obtained and stored in advance, and can be read out for use when needed.

In addition, the initial mileage position is mainly used as an initial value for calculating the position of the encountered point. For example, the initial mileage position may be a position to which mileage has been excavated at the first end or the second end of the tunnel. For a tunnel, it may initially be excavated from only one of the first and second ends of the tunnel, or it may be excavated from both ends by two crews separately. Whether excavated from only one end or both ends, when inserting a slant well and adding a crew at the slant well location, the meeting point immediately adjacent to the initial mileage location may be calculated based on the initial mileage location. For example, the tunnel contains sequentially arranged surrounding rock sections S₁、S₂、…、S_i、…、S_n-1、S_nIf from the surrounding rock section S₁Begin to excavate to S_i-1And S_iAt a certain position S in between_x，S₁～S_xThe excavation is completed, assuming that it is at S_xAnd S_nTwo inclined shafts W are added between₁And W₂If inclined shaft W₁Position S closer to the surrounding rock section_xInclined shaft W₁And position S_xWithout other inclined shaft in between, then position S_xCan be used as initial mileage position and can be used for calculating the slave position S_xAnd inclined shaft W₁Initial values of meeting points when both ends are excavated simultaneously.

For another example, the initial mileage position may be a mileage position of a third slant well inserted earlier in the tunnel than the at least one slant well. Specifically, prior to the present preparation for insertion into at least one slant well, the slant well may be inserted. For example, previously may be at location S_xIs inserted into an inclined shaft W_xPreviously, may be from the surrounding rock section S₁And position S_xBoth ends begin to be excavated without position S_xFrom the wall rock section S_nDirectional excavation, as surrounding rock section S₁And position S_xWhen the excavation is finished, if the excavation is to be accelerated, two inclined shafts W are inserted₁And W₂If inclined shaft W₁Position S closer to the surrounding rock section_xThen the inclined shaft W can be driven_xPosition S of_xAs an initial mileage position, a position S is calculated_xAnd inclined shaft W₁Initial values of meeting points when both ends are excavated simultaneously.

Step S120: under the condition that the mileage position of at least one inclined shaft inserted into the section to be excavated of the tunnel is received, the position of a first inclined shaft adjacent to the initial mileage position in the at least one inclined shaft is searched according to the initial mileage position of the tunnel and the mileage position of the at least one inclined shaft inserted into the section to be excavated of the tunnel.

In step S120, if the information related to the inclined shaft insertion is received, it may be determined that the meeting point needs to be predicted. The closest (next) slant well among the at least one slant well to the initial mileage position may be found with reference to the initial mileage position.

For example, in order to accelerate the progress of the tunnel construction, if the tunnel is excavated to the position S_xAt the section to be excavated of the tunnel (e.g. position S)_x-surrounding rock section S_n) In which one or more slant wells are inserted (e.g. only slant well W is inserted)₁Or inserting slants simultaneouslyWell W₁And W₂). And the newly-increased inclined shaft can be excavated to one side or two sides. If inclined well W₁Position S closer to the surrounding rock section_xThe first inclined shaft next to the initial mileage position in the at least one inclined shaft is an inclined shaft W₁From position S_xAnd inclined shaft W₁When both ends are excavated simultaneously, position S_xAnd inclined shaft W₁There is a meeting point (excavation meeting point) in between. Of course, simultaneously from the inclined shaft W₁And inclined shaft W₂When two ends are excavated simultaneously, the inclined shaft W₁And inclined shaft W₂There is also a meeting point between them, which can make the inclined shaft W₁As the initial mileage position of the meeting point, other steps of calculating the meeting point and calculating the position S are performed except for the processing mileage position_xAnd inclined shaft W₁The steps of meeting points in between can be similar.

Step S130: and calculating first excavation time of the mileage between the initial mileage position and the first inclined shaft position based on the surrounding rock grade of each surrounding rock section of the tunnel, the excavation speed of the corresponding set excavation construction method of each surrounding rock grade and the surrounding rock mileage of each surrounding rock section of the tunnel.

In step S130, the distance between the initial distance position and the position of the first inclined shaft may include one or more surrounding rock sections, and may include a portion of one surrounding rock section (for example, the initial distance position and/or the portion of the surrounding rock section where the position of the first inclined shaft is located). In this step, the first excavation time calculated based on the surrounding rock grades of the surrounding rock sections of the tunnel, the excavation speed of the correspondingly set excavation method for the surrounding rock grades, and the surrounding rock mileage of the surrounding rock sections of the tunnel may be considered as the excavation time required by a crew for mileage construction between the initial mileage position and the first inclined shaft position.

For example, if the initial mileage position is located in the surrounding rock section S_iA certain position S in_xThe first inclined shaft is positioned at the surrounding rock section S_jA certain position S in_yWherein j is>i, if surrounding rock section S_iTo surrounding rock section S_jThe corresponding grade of the surrounding rock is correspondingly set to have the excavation speed v of the excavation method_i、…、v_jThe first excavation time is the position S_xAnd position S_yThe time required for excavating all the surrounding rocks before, if the position S_xThe part to be excavated of the belonged surrounding rock section (position S)_xClose position S_yPart of) is represented as S_ixPosition S_yThe part to be excavated of the belonged surrounding rock section (position S)_yClose position S_xPart of) is represented as S_jyThen the first excavation time can be represented as S_ixv_i、S_i+ ₁v_i+1、…、S_j-1v_j-1、S_jyv_j。

Step S140: and dividing the first excavation time by two to obtain first encounter time corresponding to a first encounter point between the initial mileage position and the position of the first inclined shaft under the condition that two-end excavation is simultaneously carried out from the initial mileage position and the position of the first inclined shaft.

In step S140, the two teams are respectively driven from the initial mileage position (e.g., position S)_x) And a first slant well position (position S)_y) In the case of simultaneous excavation, the time required for two teams is the same when they meet, regardless of the excavation speed compared to the two teams. Therefore, half T/2 of the excavation time (first excavation time T) required by any one of the teams is the time required for excavation by both teams, and therefore the first meeting time can be obtained.

Step S150: the method comprises the steps of correspondingly setting excavation speed of an excavation construction method and surrounding rock mileage of each surrounding rock section of the tunnel based on the surrounding rock grade of each surrounding rock section of the tunnel, accumulating the surrounding rock mileage one by one between the initial mileage position and the first inclined shaft position from the initial mileage position or the first inclined shaft position, and calculating required excavation time corresponding to the accumulated surrounding rock mileage each time until the required excavation time corresponding to the accumulated surrounding rock mileage is larger than first encounter time, and the required excavation time corresponding to the previously accumulated surrounding rock mileage of the accumulated surrounding rock section at this time is smaller than or equal to the first encounter time.

In step S150, the method can be started from the beginningOne of the trip location or the location of the first deviated well is used to deduce that the short-trip mileage of the excavation can reach the first encounter time. For example, if the initial mileage position (e.g., position S) is reached_x) Starting to accumulate surrounding rock mileage one by one, firstly accumulating the surrounding rock mileage for the first time to form a surrounding rock section S_iInner partial surrounding rock S_ixThe excavation time corresponding to the surrounding rock mileage is S_ix/v_iThe second accumulated surrounding rock mileage is S_ix+S_i+1The excavation time corresponding to the surrounding rock mileage is S_ix/v_i+S_i+1/v_i+1By analogy, the surrounding rock mileage after the k-th accumulation is S_ix+S_i+1+…+S_i+k-1The excavation time corresponding to the surrounding rock mileage is S_ix/v_i+S_i+1/v_i+1…+S_i+k-1/v_i+k-1. After each accumulation, whether the excavation time corresponding to the surrounding rock mileage is just more than half T/2 of the excavation time required by a crew can be judged, if yes, the surrounding rock section where the meeting point is located can be found according to the position of the surrounding rock mileage accumulated at present, and further the specific position of the meeting point can be found nearby the surrounding rock section.

Step S160: and under the condition that the required excavation time corresponding to the accumulated surrounding rock mileage is greater than the first encounter time and the required excavation time corresponding to the previously accumulated surrounding rock mileage of the currently accumulated surrounding rock section is less than or equal to the first encounter time, subtracting the required excavation time corresponding to the previously accumulated surrounding rock mileage of the last accumulated surrounding rock section from the first encounter time to obtain the required excavation time of the last surrounding rock section in the last accumulated surrounding rock mileage between the initial mileage position and the position of the first inclined shaft.

In step S160, if the required excavation time corresponding to the accumulated surrounding rock mileage is greater than the first encounter time and the required excavation time corresponding to the previously accumulated surrounding rock mileage of the current accumulated surrounding rock section is less than or equal to the first encounter time, the surrounding rock section where the encounter point is located may be found according to the position of the currently accumulated surrounding rock mileage, for example, the excavation time S corresponding to the current surrounding rock mileage_ix/v_i+S_i+1/v_i+1…+S_i+k-1/v_i+k-1The excavation time is more than half T/2 of the excavation time required by one team, and the excavation time S corresponding to the previous accumulated surrounding rock mileage_ix/v_i+S_i+1/v_i+1…+S_i+k-2/v_i+k-2If the first meeting point is greater than T/2, the first meeting point is located in the surrounding rock section S_i+k-2And the required excavation time corresponding to the surrounding rock mileage after the last accumulation of the surrounding rock section is S_ix/v_i+S_i+1/v_i+1…+S_i+k-2/v_i+k-2If the meeting point position is located at the surrounding rock section S_i+k-2Position S in_zA surrounding rock section S between the initial mileage position and the first deviated well position_i+k-2The surrounding rock part in (1) is represented as S_(i+k-1)zThe excavation time t required for the last section of surrounding rock in the last accumulated surrounding rock mileage between the initial mileage position and the position of the first inclined shaft_k＝(S_ix/v_i+S_i+1/v_i+1…+S_(i+k-1)z/v_i+k-1)-(S_ix/v_i+S_i+1/v_i+1…+S_i+k-2/v_i+k-2) I.e. is t_k＝S_(i+k-1)z/v_i+k-1。

Step S170: and correspondingly setting the excavation speed of an excavation construction method based on the surrounding rock grades of all the surrounding rock sections of the tunnel and all the surrounding rock grades, and multiplying the excavation time required by the last section of surrounding rock in the last accumulated surrounding rock mileage between the initial mileage position and the first inclined shaft position by the corresponding excavation speed to obtain the mileage of the last section of surrounding rock in the last accumulated surrounding rock mileage between the initial mileage position and the first inclined shaft position.

In this step S170, for example, the excavation time t required for the last section of the surrounding rock in the last accumulated surrounding rock mileage between the initial mileage position and the position of the first deviated well_k＝S_(i+k-1)z/v_i+k-1Calculated by the step S160, wherein the corresponding excavation speed v of the last section of the surrounding rock_i+k-1When known, then canTo obtain the mileage S of the last section of the surrounding rock in the last accumulated surrounding rock mileage between the initial mileage position and the position of the first inclined shaft_(i+k-1)z＝t_kv_i+k-1。

Step S180: and calculating to obtain the surrounding rock mileage after the previous accumulation of the last accumulated surrounding rock section between the initial mileage position and the position of the first inclined shaft based on the surrounding rock mileage of each surrounding rock section of the tunnel, and summing the initial mileage position, the previous accumulated surrounding rock mileage after the last accumulated surrounding rock section between the initial mileage position and the position of the first inclined shaft, and the last accumulated surrounding rock mileage among the last accumulated surrounding rock mileage between the initial mileage position and the position of the first inclined shaft to obtain the mileage position of the first meeting point.

In this step S180, for example, the previous accumulated surrounding rock mileage of the last accumulated surrounding rock section between the initial mileage position and the position of the first deviated well is S_ix/v_i+S_i+1/v_i+1…+S_i+k-2/v_i+k-2The initial mileage position is S_xAnd the mileage of the last section of the surrounding rock in the last accumulated surrounding rock mileage between the initial mileage position and the position of the first inclined shaft is S_(i+k-1)zThen the mileage position of the first meeting point can be represented as S_x+(S_ix/v_i+S_i+1/v_i+1…+S_i+k-2/v_i+k-2)+S_(i+k-1)z。

In the above embodiment, when the two ends of the inclined shaft are inserted for excavation to accelerate the construction speed, through the steps S110 to S180, the initial mileage position and the mileage position of the meeting point between the adjacent inclined shafts can be automatically calculated based on known or preset information (such as the initial mileage position, the surrounding rock grade of each surrounding rock section of the tunnel, the excavation speed of the excavation method set correspondingly to each surrounding rock grade, the surrounding rock mileage of each surrounding rock section of the tunnel, the mileage position of the inclined shaft, and the like). Therefore, the tunnel excavation data can be greatly and conveniently modified and adjusted in time.

Further, in the case where the number of at least one slant shaft inserted into the section to be excavated of the tunnel is plural, in addition to the meeting point between the initial mileage position and the first slant shaft position, the meeting point between the first slant shaft and the second slant shaft immediately adjacent thereto may be found. In this case, the method shown in fig. 1 may further include the steps of:

s191: based on the mileage position of at least one inclined shaft inserted into the section to be excavated of the tunnel, searching the position of a second inclined shaft which is close to the first inclined shaft and far away from the initial mileage position in the at least one inclined shaft;

s192: calculating second excavation time of mileage between the position of the first inclined shaft and the position of the second inclined shaft based on the surrounding rock grade of each surrounding rock section of the tunnel, the excavation speed of the correspondingly set excavation construction method of each surrounding rock grade and the surrounding rock mileage of each surrounding rock section of the tunnel;

s193: dividing the second excavation time by two to obtain second encounter time corresponding to a second encounter point between the position of the first inclined shaft and the position of the second inclined shaft under the condition that two-end excavation is simultaneously carried out from the position of the first inclined shaft and the position of the second inclined shaft;

s194: based on the surrounding rock grades of all surrounding rock sections of the tunnel, the excavation speed of the excavation construction method correspondingly set by all the surrounding rock grades and the surrounding rock mileage of all the surrounding rock sections of the tunnel, accumulating the surrounding rock mileage one by one between the position of the first inclined shaft and the position of the second inclined shaft from the position of the first inclined shaft or the position of the second inclined shaft, and calculating the required excavation time corresponding to the accumulated surrounding rock mileage each time until the required excavation time corresponding to the accumulated surrounding rock mileage is greater than the second meeting time, and the required excavation time corresponding to the previously accumulated surrounding rock mileage of the accumulated surrounding rock section at this time is less than or equal to the second meeting time;

s195: when the required excavation time corresponding to the accumulated surrounding rock mileage is longer than the second meeting time and the required excavation time corresponding to the previously accumulated surrounding rock mileage of the currently accumulated surrounding rock section is shorter than or equal to the second meeting time, subtracting the required excavation time corresponding to the previously accumulated surrounding rock mileage of the last accumulated surrounding rock section from the second meeting time to obtain the required excavation time of the last surrounding rock section in the last accumulated surrounding rock mileage between the position of the first inclined shaft and the position of the second inclined shaft;

s196: correspondingly setting the excavation speed of an excavation construction method based on the surrounding rock grades of the surrounding rock sections of the tunnel and the surrounding rock grades, and multiplying the excavation time required by the last section of surrounding rock in the last accumulated surrounding rock mileage between the position of the first inclined shaft and the position of the second inclined shaft by the corresponding excavation speed to obtain the mileage of the last section of surrounding rock in the last accumulated surrounding rock mileage between the position of the first inclined shaft and the position of the second inclined shaft;

s197: and calculating to obtain the surrounding rock mileage after the last accumulation of the surrounding rock section between the position of the first inclined shaft and the position of the second inclined shaft based on the surrounding rock mileage of each surrounding rock section of the tunnel, and summing the surrounding rock mileage after the last accumulation of the surrounding rock section between the position of the first inclined shaft and the position of the second inclined shaft and the surrounding rock mileage after the last accumulation of the surrounding rock mileage between the position of the first inclined shaft and the position of the second inclined shaft to obtain the mileage position of the second meeting point.

In this embodiment, the method of finding the position of the meeting point (second meeting point) between the position of the first inclined shaft and the position of the second inclined shaft through the above steps S191 to S197 is similar to the method of finding the position of the meeting point (first meeting point) between the initial mileage position and the position of the first inclined shaft through the above steps S120 to S180, and the two methods are mainly different in the position at all times. Therefore, the specific embodiment of the steps S191 to S197 can be implemented with reference to the steps S120 to S180. In this way, in the case that more inclined wells are inserted at the same time, the positions of other meeting points can be calculated by adopting a similar method.

In the tunnel excavation process, the difference between the designed surrounding rock grade and the actual surrounding rock grade can cause the difference of excavation work efficiency, and further the meeting place can be changed. Therefore, the meeting point may be adjusted during the actual excavation process.

In order to automatically calculate the meeting point if the grade of the surrounding rock changes when the inclined shaft is inserted, the method shown in fig. 1 may further include the steps of: and S1100, receiving the new surrounding rock grade of the set surrounding rock section, updating the surrounding rock grade of each surrounding rock section of the tunnel according to the new surrounding rock grade of the set surrounding rock section, and correspondingly setting the excavation speed of the excavation method according to each surrounding rock grade. In step S1100, the surrounding rock related data used in the above steps (e.g., step S120 to step S180) can be adjusted, so that a more accurate meeting point position can be predicted.

In addition, based on the method for predicting the meeting points of tunnel excavation under the inclined shaft insertion condition, the embodiment of the invention also provides a method for predicting the construction period of tunnel excavation under the inclined shaft insertion condition.

Fig. 2 is a schematic flow chart of a method for predicting a tunnel excavation period under a slant entry condition according to an embodiment of the present invention, and referring to fig. 2, the method for predicting a tunnel excavation period under a slant entry condition according to the embodiments may further include the following steps:

step S210: acquiring mileage positions of all meeting points of the tunnel by using the method;

step S220: calculating meeting time corresponding to each meeting point according to the initial mileage position, the surrounding rock grade of each surrounding rock section of the tunnel, the corresponding set excavation speed of the excavation method of each surrounding rock grade, the surrounding rock mileage of each surrounding rock section of the tunnel, the mileage position of each inclined shaft inserted into the section to be excavated of the tunnel and the mileage positions of all the meeting points;

step S230: taking the maximum meeting time in the meeting times corresponding to all the meeting points as the residual excavation time required by the tunnel except the initial mileage position;

step S240: and acquiring excavation time required by excavation to reach the initial mileage position, and summing the excavation time required by excavation to reach the initial mileage position and the required residual excavation time to obtain the total construction period required by the tunnel.

The step S210 may calculate the position of each meeting point required after inserting at least one inclined shaft by referring to the meeting point prediction method of the previous embodiment. In the step S220, the initial mileage position S is used_xGrade i of surrounding rock of each surrounding rock section of tunnel_mSetting the excavation speed v of the excavation method corresponding to each surrounding rock grade_iAnd surrounding rock mileage S of each surrounding rock section of the tunnel_iAnd mileage positions of the inclined shafts inserted into the section to be excavated of the tunnel (e.g., inclined shaft W)₁And inclined shaft W₂The corresponding positions are respectively represented as S_y1And S_y2) And the mileage positions of all the meeting points (e.g., position S)_xAnd inclined shaft W₁The meeting point between them is denoted as S_c1Well inclined at different position W₁And inclined shaft W₂The meeting point between them is denoted as S_c2) From this information, e.g. S can be found_ix，S_i+1，S_(i+k-1)zThe surrounding rock sections and the corresponding excavation speed are equal, so that the meeting time (such as S) corresponding to each meeting point (such as c1 and c2) can be calculated_ix/v_i+S_i+1/v_i+1…+S_(i+k-1)z/v_i+k-1。

Further, the method for predicting the tunnel excavation period under the inclined shaft insertion condition shown in fig. 2 may further include the steps of:

s250: summing the meeting time corresponding to each meeting point and the excavation time required for excavation to reach the initial mileage position to obtain the total construction period of excavation to reach the corresponding meeting point;

s260: and displaying each meeting point and the corresponding total construction period in a two-dimensional coordinate system formed according to the mileage and excavation time of the tunnel.

In this embodiment, for example, the mileage of the tunnel is used as an abscissa (the surrounding rock positions of each section can be marked), and the excavation time is used as an ordinate, and the mileage position of the meeting point and the excavation time corresponding to each mileage position (such as the surrounding rock section, the initial mileage position, the inclined shaft position, the meeting point position, and the like) are displayed. Therefore, the required total construction period (the construction time of the whole tunnel) can be intuitively known by looking at the high and low positions of the meeting points and finding the meeting point with the highest position.

In addition, based on the same inventive concept as the method for predicting meeting points of tunnel excavation under the inclined shaft insertion condition shown in fig. 1, the embodiment of the invention also provides another method for predicting the tunnel excavation period under the inclined shaft insertion condition.

Fig. 3 is a schematic flow chart of a method for predicting a tunnel excavation period under a slant entry condition according to an embodiment of the present invention, and referring to fig. 3, the method for predicting a tunnel excavation period under a slant entry condition according to the embodiments may include the following steps:

step S310: acquiring a pre-stored initial mileage position, surrounding rock grades of all surrounding rock sections of the tunnel, an excavation speed of an excavation construction method correspondingly set for all the surrounding rock grades, and surrounding rock mileage of all the surrounding rock sections of the tunnel;

step S320: under the condition that the mileage position of at least one inclined shaft inserted into the section to be excavated of the tunnel is received, searching the position of a first inclined shaft adjacent to the initial mileage position in the at least one inclined shaft according to the initial mileage position of the tunnel and the mileage position of the at least one inclined shaft inserted into the section to be excavated of the tunnel;

step S330: calculating first excavation time of mileage between the initial mileage position and the first inclined shaft position based on the surrounding rock grade of each surrounding rock section of the tunnel, the excavation speed of the corresponding set excavation construction method of each surrounding rock grade and the surrounding rock mileage of each surrounding rock section of the tunnel;

step S340: dividing the first excavation time by two to obtain first encounter time corresponding to a first encounter point between the initial mileage position and the position of the first inclined shaft under the condition that two-end excavation is simultaneously carried out from the initial mileage position and the position of the first inclined shaft;

step S350: based on the surrounding rock grades of all surrounding rock sections of the tunnel, the excavation speed of an excavation construction method correspondingly set for all the surrounding rock grades, and the surrounding rock mileage of all the surrounding rock sections of the tunnel, accumulating the surrounding rock mileage one by one between the initial mileage position and the first inclined shaft position from the initial mileage position or the first inclined shaft position, and calculating the required excavation time corresponding to each accumulated surrounding rock mileage until the required excavation time corresponding to the accumulated surrounding rock mileage is greater than the first encounter time, and the required excavation time corresponding to the previously accumulated surrounding rock mileage of the accumulated surrounding rock section is less than or equal to the first encounter time;

step S360: when the required excavation time corresponding to the accumulated surrounding rock mileage is larger than the first encounter time and the required excavation time corresponding to the previously accumulated surrounding rock mileage of the currently accumulated surrounding rock section is smaller than or equal to the first encounter time, subtracting the required excavation time corresponding to the previously accumulated surrounding rock mileage of the last accumulated surrounding rock section from the first encounter time to obtain the required excavation time of the last surrounding rock section in the last accumulated surrounding rock mileage between the initial mileage position and the first inclined shaft position;

step S370: correspondingly setting the excavation speed of an excavation construction method based on the surrounding rock grades of all the surrounding rock sections of the tunnel and all the surrounding rock grades, and multiplying the excavation time required by the last section of surrounding rock in the last accumulated surrounding rock mileage between the initial mileage position and the first inclined shaft position by the corresponding excavation speed to obtain the mileage of the last section of surrounding rock in the last accumulated surrounding rock mileage between the initial mileage position and the first inclined shaft position;

step S380: calculating to obtain the surrounding rock mileage after the previous accumulation of the last accumulated surrounding rock section between the initial mileage position and the position of the first inclined shaft based on the surrounding rock mileage of each surrounding rock section of the tunnel, and summing the initial mileage position, the previous accumulated surrounding rock mileage after the last accumulated surrounding rock section between the initial mileage position and the position of the first inclined shaft, and the last accumulated surrounding rock mileage among the last accumulated surrounding rock mileage between the initial mileage position and the position of the first inclined shaft to obtain the mileage position of the first meeting point;

step S390: acquiring excavation time required by excavation to reach the initial mileage position, and summing the excavation time required by excavation to reach the initial mileage position and the first meeting time to obtain a total construction period corresponding to the first meeting point;

step S3100: and taking the longest construction period in the total construction period corresponding to all meeting points including the first meeting point as the total excavation construction period of the tunnel.

The steps S310 to S380 can be implemented by referring to the steps S110 to S180. In step S390, the total construction period corresponding to one meeting point can be calculated by using the intermediate data obtained in steps S310 to S380, and similarly, the total construction period corresponding to other meeting points can be calculated. The total construction periods corresponding to different meeting points are mainly reflected in the difference of the total construction time caused by corresponding different meeting time. In step S3100, there may be other meeting points, such as a second meeting point, besides the first meeting point.

Further, the method for predicting the tunnel excavation period under the inclined shaft insertion condition shown in fig. 3 may further include the steps of:

s3110: and displaying each meeting point including the first meeting point and a corresponding total construction period in a two-dimensional coordinate system formed according to the mileage and excavation time of the tunnel.

In this embodiment, the required total construction period (the construction time of the whole tunnel) can be intuitively known by looking at the relative positions of the different meeting points and finding the meeting point with the longest construction period.

In addition, the embodiment of the present invention further provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the processor implements the steps of the method according to any one of fig. 1 to fig. 3.

Embodiments of the present invention also provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the method according to any one of the embodiments shown in fig. 1 to 3.

In order that those skilled in the art will better understand the present invention, embodiments of the present invention will be described below with reference to specific examples.

The indiscriminate construction mode of railway tunnel engineering means that opposite excavation can be carried out during tunnel excavation until meeting. During the excavation, if the construction period is reached, 1 or more inclined shafts are added in stages, and simultaneously the working team is increased. When the slant wells are added, the tunnel is actually divided into 2 or more sections, and the sections are excavated in an undispersed manner, so that the sections meet at a certain point (which may be called an undispersed point, a meeting point or an undispersed meeting point), as shown in fig. 4. The distance (position) of the meeting point can provide algorithm support for the subsequent tunnel construction period prediction and tunnel image progress chart drawing.

Referring to fig. 5, data of the grade of the surrounding rock of the tunnel, the distance of each section of the surrounding rock, the excavation speed corresponding to each section of the surrounding rock, the position of inserting into the inclined shaft and the like may be initially input, and if the data is already available, updated various data, such as the grade of the surrounding rock, the position of inserting into the inclined shaft and the like, may be received. And then, sequentially calculating the required excavation time corresponding to the distance of each section of surrounding rock of the section of tunnel aiming at the section of tunnel with the meeting point needing to be calculated, generating a time table of the sectional excavation, and summing the sectional excavation time to obtain the total excavation time T of the section of tunnel. And then, the position of the surrounding rock where the excavation time is half can be searched.

The method for calculating the position of the surrounding rock where the meeting points are located can comprise the following processes: let the current excavated distance of a certain construction team be S₀The distance between two adjacent inclined shafts of the tunnel (or the distance between two ends of the tunnel) is S, and the distance between each section of surrounding rock is S_i(i is the sequence number of the surrounding rock list), the tunnel excavation method is set as a, and the speed when the surrounding rock grade is i is set as

The corresponding required excavation time of the surrounding rock of the section is

Let the total excavation time of a section of tunnel at the meeting point to be calculated be T, and then the excavation time required for the section of tunnel to reach the meeting point is T

Calculating the time required for the section of tunnel to excavate the i-1 th surrounding rock

The required time after the i-th section of surrounding rock is excavated is

Then, if

Then the meeting point S_mCan be expressed as:

for example, as shown in FIG. 4, if the position of the non-scattering point 1 is calculated, then according to the above formula, if i is 3, then if it is found

The meeting point 1, i.e., S, is known_mAt the surrounding rock section S₃，

Wherein the content of the first and second substances,

can be set empirically, s_jIt can be known from the planning of the tunnel engineering,

can be according to the surrounding rock section excavation speed

And the length of the surrounding rock is calculated, and the time T can be calculated according to the excavation speed of each section of surrounding rock and the length of each section of surrounding rockThus obtaining the product. If the calculated meeting point S_mThe relative encounter distance of the section of the tunnel is obtained, and if an initial mileage is excavated in the section of the tunnel, the initial mileage can be added, so that the mileage of the encounter point relative to the whole tunnel can be obtained.

In addition, when the grade of the surrounding rock changes or a new inclined shaft is added, the data can be updated, and the meeting point can be further recalculated. Therefore, the predicted meeting point position can be automatically adjusted continuously according to the tunnel engineering adjustment condition. Moreover, the meeting point can be used to predict the duration of the tunnel.

A more specific example will be described below. Assuming that the distance of the tunnel AB is 2000m, the surrounding rock distribution and the distance are shown in table 1, the tunnel excavation method is a drilling and blasting method, and the speed distribution is shown in table 1. And (4) increasing an inclined shaft at a position 800m away from the tunnel entrance for accelerating the excavation speed after 40 days. Two working teams are added from the inclined shaft and are respectively excavated towards the working faces at the two sides. The meeting point with the working team at the entrance of the tunnel at the moment is set as S_m1The meeting point with the excavation working team at the exit of the tunnel is S_m2。

TABLE 1 Tunnel basic information Table

Sequential number	Grade of surrounding rock	The distance of the segment	Speed of the section	The total excavation time (d)
					1	2	200	5	40
2	3	100	4	25
					3	1	400	8	50
4	3	300	4	75
					5	5	50	1	50
6	4	200	2	100
					7	2	350	5	70
8	1	400	8	50

(1) After 40 days of excavation, the tunnel entrance is pushed forward by 200m, the tunnel exit is pushed forward by 320m, and the inclined shaft of the tunnel is 800m away from the tunnel entrance and corresponds to the content in the sequence number 4 in table 1. Table 1 can now be split into two tables, Table 2 and Table 3 respectively.

Table 2 tunnel basic information table

Sequential number	Grade of surrounding rock	The distance of the segment	Speed of the section	The total excavation time (d)
					2	3	100	4	25
3	1	400	8	50
					4	3	100	4	25

Table 3 tunnel basic information table

Sequential number	Grade of surrounding rock	The distance of the segment	Speed of the section	The total excavation time (d)
					4	3	200	4	55
5	5	50	1	50
					6	4	200	2	100
7	2	350	5	70
					8	1	80	8	10

(2) The building time of the first section of tunnel is T-100 d, and the meeting time is

Since 25 < 50 ≦ 25+50, so:

S_m1＝100+8×(50-25)＝300；

(3) the building time of the second section of tunnel is T-285 d, and the meeting time is

Since 55+50 < 142.5 ≦ 55+50+100, so:

S_m2＝(200+50)+2×(142.5-(55+50))＝325；

since the distance of the inclined shaft is 800m away from the tunnel portal, S_m2The distance from the tunnel portal is 800+325 ═ 1125.

The method is an important method for planning and deducing the construction period of the railway tunnel. But the unscrupulous deduction method has not been systematically and systematically described. In field work, the intersection points are not scattered, and the newly added inclined shaft, the surrounding rock grade and the construction method may change or adjust in practice, and the intersection points are not quickly adjusted by a system aiming at the changes at present. Meanwhile, the calculation of the non-scattering intersection points is related to the grade and the construction method of the surrounding rock. At present, two factors are considered in no system, and the method is applied to the calculation of the non-scattered intersection point.

The method for calculating the non-scattered meeting points of tunnel excavation under the condition of multi-inclined shaft insertion in the railway engineering construction field provides a non-scattered point deduction algorithm for linear excavation engineering such as railway tunnels, road tunnels and the like. By utilizing the algorithm, the program design and implementation are completed, and the automatic deduction and updating of a computer without scattered points are realized. An algorithm basis is provided for deducing the construction period of linear projects such as tunnels and drawing an image progress chart. The method solves the problem that the tunnel excavation does not have scattered intersection points and can be automatically calculated and adjusted under the condition of multi-inclined shaft insertion.

In summary, the method for predicting meeting points in tunnel excavation under the inclined shaft insertion condition, the method for predicting the construction period of tunnel excavation under the inclined shaft insertion condition, the computer device and the computer readable storage medium according to the embodiments of the present invention can implement automatic deduction and update of meeting points and construction period, and can facilitate timely modification and adjustment of tunnel excavation data.

In the description herein, reference to the description of the terms "one embodiment," "a particular embodiment," "some embodiments," "for example," "an example," "a particular example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. The sequence of steps involved in the various embodiments is provided to schematically illustrate the practice of the invention, and the sequence of steps is not limited and can be suitably adjusted as desired.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A prediction method for meeting points of tunnel excavation under the condition of inclined shaft insertion is characterized by comprising the following steps:

2. The method of predicting a meeting point of tunnel excavation under the inclined shaft insertion condition as claimed in claim 1, wherein in the case where the number of at least one inclined shaft inserted into the section of the tunnel to be excavated is plural, the method further comprises:

3. The method of predicting a meeting point of tunnel excavation under deviated well insertion conditions of claim 1, wherein the initial mileage position is a position reached by the mileage that has been excavated at the first end or the second end of the tunnel.

4. The method of predicting a meeting point of tunnel excavation under a deviated well inserting condition according to claim 1, wherein the initial mileage position is a mileage position of a third deviated well inserted earlier in the tunnel than the at least one deviated well.

5. The method for predicting meeting points of tunnel excavation under the inclined shaft inserting condition as claimed in claim 1, further comprising:

6. A method for predicting a tunnel excavation period under an inclined shaft insertion condition is characterized by comprising the following steps:

acquiring mileage positions of all meeting points of the tunnel by using the method of any one of claims 1 to 5;

7. The method for predicting the tunneling period under the inclined shaft insertion condition according to claim 6, further comprising:

8. A method for predicting a tunnel excavation period under an inclined shaft insertion condition is characterized by comprising the following steps:

9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the steps of the method according to any of claims 1 to 8 are implemented when the program is executed by the processor.

10. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 1 to 8.